Subject: [PATCH] 'message-kill-buffer': fix backup delete question

From: Sven Willner <[email-masked]>
Date: Thu, 19 Jul 2018 13:39:04 +0200

Before 'message-kill-buffer' would ask to delete backup file if draft has been
saved regardless if a backup file has actually been created. Now only ask if
a backup file exists.

Copyright-paperwork-exempt: yes
---
 etc/NEWS             |    5 +-
 lisp/gnus/message.el | 6174 +++++++++++++++++++++---------------------
 2 files changed, 3091 insertions(+), 3088 deletions(-)

diff --git a/etc/NEWS b/etc/NEWS
index f30ab69823..ca4efcb9b2 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -562,6 +562,9 @@ GnuTLS manual) is recommended instead.
 
 ** Message
 
+---
+*** 'message-kill-buffer' asks to delete backup file only if one actually exists
+
 +++
 *** Messages can now be systematically encrypted
 when the PGP keyring contains a public key for every recipient.  To
@@ -947,5 +950,5 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
 Local variables:
 coding: utf-8
 mode: outline
-paragraph-separate: "[ 	]*$"
+paragraph-separate: "[  ]*$"
 end:
diff --git a/lisp/gnus/message.el b/lisp/gnus/message.el
index dde9c28656..aff92aed27 100644
--- a/lisp/gnus/message.el
+++ b/lisp/gnus/message.el
@@ -57,7 +57,7 @@
 (defvar rmail-enable-mime-composing)
 
 (defgroup message '((user-mail-address custom-variable)
-		    (user-full-name custom-variable))
+            (user-full-name custom-variable))
   "Mail and news message composing."
   :link '(custom-manual "(message)Top")
   :group 'mail
@@ -132,7 +132,7 @@ This function will be called with the name of the file to store the
 article in.  The default function is `message-output' which saves in Unix
 mailbox format."
   :type '(radio (function-item message-output)
-		(function :tag "Other"))
+        (function :tag "Other"))
   :group 'message-sending)
 
 (defcustom message-fcc-externalize-attachments nil
@@ -160,19 +160,19 @@ If this variable is nil, no such courtesy message will be added."
   "Specifies how \"From\" headers look.
 
 If nil, they contain just the return address like:
-	[email-masked]
+    [email-masked]
 If `parens', they look like:
-	[email-masked] (Elvis Parsley)
+    [email-masked] (Elvis Parsley)
 If `angles', they look like:
-	Elvis Parsley <[email-masked]>
+    Elvis Parsley <[email-masked]>
 
 Otherwise, most addresses look like `angles', but they look like
 `parens' if `angles' would need quoting and `parens' would not."
   :version "27.1"
   :type '(choice (const :tag "simple" nil)
-		 (const parens)
-		 (const angles)
-		 (const default))
+         (const parens)
+         (const angles)
+         (const default))
   :group 'message-headers)
 (make-obsolete-variable
  'message-from-style
@@ -205,7 +205,7 @@ and `valid-newsgroups'."
   :type '(repeat sexp))			; Fixme: improve this
 
 (defcustom message-required-headers '((optional . References)
-				      From)
+                      From)
   "Headers to be generated or prompted for when sending a message.
 Also see `message-required-news-headers' and
 `message-required-mail-headers'."
@@ -225,8 +225,8 @@ Also see `message-required-news-headers' and
 
 (defcustom message-required-news-headers
   '(From Newsgroups Subject Date Message-ID
-	 (optional . Organization)
-	 (optional . User-Agent))
+     (optional . Organization)
+     (optional . User-Agent))
   "Headers to be generated or prompted for when posting an article.
 RFC977 and RFC1036 require From, Date, Newsgroups, Subject,
 Message-ID.  Organization, Lines, In-Reply-To, Expires, and
@@ -239,7 +239,7 @@ header, remove it from this list."
 
 (defcustom message-required-mail-headers
   '(From Subject Date (optional . In-Reply-To) Message-ID
-	 (optional . User-Agent))
+     (optional . User-Agent))
   "Headers to be generated or prompted for when mailing a message.
 It is recommended that From, Date, To, Subject and Message-ID be
 included.  Organization and User-Agent are optional."
@@ -270,11 +270,11 @@ This is a list of regexps and regexp matches."
   :group 'message-headers
   :link '(custom-manual "(message)Message Headers")
   :type '(repeat :value-to-internal (lambda (widget value)
-				      (custom-split-regexp-maybe value))
-		 :match (lambda (widget value)
-			  (or (stringp value)
-			      (widget-editable-list-match widget value)))
-		 regexp))
+                      (custom-split-regexp-maybe value))
+         :match (lambda (widget value)
+              (or (stringp value)
+                  (widget-editable-list-match widget value)))
+         regexp))
 
 (defcustom message-ignored-mail-headers
   "^\\([GF]cc\\|Resent-Fcc\\|Xref\\|X-Draft-From\\|X-Gnus-Agent-Meta-Information\\):"
@@ -291,11 +291,11 @@ any confusion."
   :group 'message-interface
   :link '(custom-manual "(message)Superseding")
   :type '(repeat :value-to-internal (lambda (widget value)
-				      (custom-split-regexp-maybe value))
-		 :match (lambda (widget value)
-			  (or (stringp value)
-			      (widget-editable-list-match widget value)))
-		 regexp))
+                      (custom-split-regexp-maybe value))
+         :match (lambda (widget value)
+              (or (stringp value)
+                  (widget-editable-list-match widget value)))
+         regexp))
 
 (defcustom message-subject-re-regexp
   "^[ \t]*\\([Rr][Ee]\\(\\[[0-9]*\\]\\)* ?:[ \t]*\\)*[ \t]*"
@@ -316,8 +316,8 @@ old subject.  In this case, `message-subject-trailing-was-regexp' is
 used."
   :version "24.1"
   :type '(choice (const :tag "never" nil)
-		 (const :tag "always strip" t)
-		 (const ask))
+         (const :tag "always strip" t)
+         (const ask))
   :link '(custom-manual "(message)Message Headers")
   :group 'message-various)
 
@@ -432,8 +432,8 @@ when `message-cite-function' is
 are \"^-- $\" (strict) and \"^-- *$\" (loose; allow missing
 whitespace)."
   :type '(choice (const :tag "strict" "^-- $")
-		 (const :tag "loose" "^-- *$")
-		 regexp)
+         (const :tag "loose" "^-- *$")
+         regexp)
   :version "22.3" ;; Gnus 5.10.12 (changed default)
   :link '(custom-manual "(message)Various Message Variables")
   :group 'message-various)
@@ -491,11 +491,11 @@ function
   :group 'message-buffers
   :link '(custom-manual "(message)Message Buffers")
   :type '(choice (const nil)
-		 (sexp :tag "unique" :format "unique\n" :value unique
-		       :match (lambda (widget value) (memq value '(unique t))))
-		 (const unsent)
-		 (const standard)
-		 (function :format "\n    %{%t%}: %v")))
+         (sexp :tag "unique" :format "unique\n" :value unique
+               :match (lambda (widget value) (memq value '(unique t))))
+         (const unsent)
+         (const standard)
+         (function :format "\n    %{%t%}: %v")))
 
 (defcustom message-kill-buffer-on-exit nil
   "Non-nil means that the message buffer will be killed after sending a message."
@@ -516,15 +516,15 @@ This is used by `message-kill-buffer'."
 If t, use `message-user-organization-file'."
   :group 'message-headers
   :type '(choice string
-		 (const :tag "consult file" t)))
+         (const :tag "consult file" t)))
 
 (defcustom message-user-organization-file
   (let (orgfile)
     (dolist (f (list "/etc/organization"
-		     "/etc/news/organization"
-		     "/usr/lib/news/organization"))
+             "/etc/news/organization"
+             "/usr/lib/news/organization"))
       (when (file-readable-p f)
-	(setq orgfile f)))
+    (setq orgfile f)))
     orgfile)
   "Local news organization file."
   :type '(choice (const nil) file)
@@ -548,9 +548,9 @@ The provided functions are:
   :group 'message-forwarding
   :link '(custom-manual "(message)Forwarding")
   :type '(radio (function-item message-forward-subject-author-subject)
-		(function-item message-forward-subject-fwd)
-		(function-item message-forward-subject-name-subject)
-		(repeat :tag "List of functions" function)))
+        (function-item message-forward-subject-fwd)
+        (function-item message-forward-subject-name-subject)
+        (repeat :tag "List of functions" function)))
 
 (defcustom message-forward-as-mime nil
   "Non-nil means forward messages as an inline/rfc822 MIME section.
@@ -576,8 +576,8 @@ digital signature."
   :version "21.1"
   :group 'message-forwarding
   :type '(choice (const :tag "use MML" t)
-		 (const :tag "don't use MML " nil)
-		 (const :tag "use MML when appropriate" best)))
+         (const :tag "don't use MML " nil)
+         (const :tag "use MML when appropriate" best)))
 
 (defcustom message-forward-before-signature t
   "Non-nil means put forwarded message before signature, else after."
@@ -604,11 +604,11 @@ Done before generating the new subject of a forward."
   :group 'message-interface
   :link '(custom-manual "(message)Resending")
   :type '(repeat :value-to-internal (lambda (widget value)
-				      (custom-split-regexp-maybe value))
-		 :match (lambda (widget value)
-			  (or (stringp value)
-			      (widget-editable-list-match widget value)))
-		 regexp))
+                      (custom-split-regexp-maybe value))
+         :match (lambda (widget value)
+              (or (stringp value)
+                  (widget-editable-list-match widget value)))
+         regexp))
 
 (defcustom message-forward-ignored-headers "^Content-Transfer-Encoding:\\|^X-Gnus"
   "All headers that match this regexp will be deleted when forwarding a message.
@@ -619,11 +619,11 @@ This may also be a list of regexps."
   :version "21.1"
   :group 'message-forwarding
   :type '(repeat :value-to-internal (lambda (widget value)
-				      (custom-split-regexp-maybe value))
-		 :match (lambda (widget value)
-			  (or (stringp value)
-			      (widget-editable-list-match widget value)))
-		 regexp))
+                      (custom-split-regexp-maybe value))
+         :match (lambda (widget value)
+              (or (stringp value)
+                  (widget-editable-list-match widget value)))
+         regexp))
 
 (defcustom message-forward-included-headers
   '("^From:" "^Subject:" "^Date:")
@@ -633,11 +633,11 @@ variable should be a regexp or a list of regexps."
   :version "27.1"
   :group 'message-forwarding
   :type '(repeat :value-to-internal (lambda (widget value)
-				      (custom-split-regexp-maybe value))
-		 :match (lambda (widget value)
-			  (or (stringp value)
-			      (widget-editable-list-match widget value)))
-		 regexp))
+                      (custom-split-regexp-maybe value))
+         :match (lambda (widget value)
+              (or (stringp value)
+                  (widget-editable-list-match widget value)))
+         regexp))
 
 (defcustom message-ignored-cited-headers "."
   "Delete these headers from the messages you yank."
@@ -652,11 +652,11 @@ variable should be a regexp or a list of regexps."
   :link '(custom-manual "(message)Insertion Variables")
   :type 'regexp
   :set (lambda (symbol value)
-	 (prog1
-	     (custom-set-default symbol value)
-	   (if (boundp 'gnus-message-cite-prefix-regexp)
-	       (setq gnus-message-cite-prefix-regexp
-		     (concat "^\\(?:" value "\\)"))))))
+     (prog1
+         (custom-set-default symbol value)
+       (if (boundp 'gnus-message-cite-prefix-regexp)
+           (setq gnus-message-cite-prefix-regexp
+             (concat "^\\(?:" value "\\)"))))))
 
 (defcustom message-cancel-message "I am canceling my own article.\n"
   "Message to be inserted in the cancel message."
@@ -667,26 +667,26 @@ variable should be a regexp or a list of regexps."
 (defun message-send-mail-function ()
   "Return suitable value for the variable `message-send-mail-function'."
   (cond ((and (require 'sendmail)
-	      (boundp 'sendmail-program)
-	      sendmail-program
-	      (executable-find sendmail-program))
-	 'message-send-mail-with-sendmail)
-	((and (locate-library "smtpmail")
-	      (boundp 'smtpmail-default-smtp-server)
-	      smtpmail-default-smtp-server)
-	 'message-smtpmail-send-it)
-	((locate-library "mailclient")
-	 'message-send-mail-with-mailclient)
-	(t
-	 (error "Don't know how to send mail.  Please customize `message-send-mail-function'"))))
+          (boundp 'sendmail-program)
+          sendmail-program
+          (executable-find sendmail-program))
+     'message-send-mail-with-sendmail)
+    ((and (locate-library "smtpmail")
+          (boundp 'smtpmail-default-smtp-server)
+          smtpmail-default-smtp-server)
+     'message-smtpmail-send-it)
+    ((locate-library "mailclient")
+     'message-send-mail-with-mailclient)
+    (t
+     (error "Don't know how to send mail.  Please customize `message-send-mail-function'"))))
 
 (defun message-default-send-mail-function ()
   (cond ((eq send-mail-function 'smtpmail-send-it) 'message-smtpmail-send-it)
-	((eq send-mail-function 'feedmail-send-it) 'feedmail-send-it)
-	((eq send-mail-function 'sendmail-query-once) 'sendmail-query-once)
-	((eq send-mail-function 'mailclient-send-it)
-	 'message-send-mail-with-mailclient)
-	(t (message-send-mail-function))))
+    ((eq send-mail-function 'feedmail-send-it) 'feedmail-send-it)
+    ((eq send-mail-function 'sendmail-query-once) 'sendmail-query-once)
+    ((eq send-mail-function 'mailclient-send-it)
+     'message-send-mail-with-mailclient)
+    (t (message-send-mail-function))))
 
 ;; Useful to set in site-init.el
 (defcustom message-send-mail-function (message-default-send-mail-function)
@@ -703,14 +703,14 @@ default is system dependent and determined by the function
 
 See also `send-mail-function'."
   :type '(radio (function-item message-send-mail-with-sendmail)
-		(function-item message-send-mail-with-mh)
-		(function-item message-send-mail-with-qmail)
-		(function-item message-smtpmail-send-it)
-		(function-item smtpmail-send-it)
-		(function-item feedmail-send-it)
-		(function-item message-send-mail-with-mailclient
-			       :tag "Use Mailclient package")
- 		(function :tag "Other"))
+        (function-item message-send-mail-with-mh)
+        (function-item message-send-mail-with-qmail)
+        (function-item message-smtpmail-send-it)
+        (function-item smtpmail-send-it)
+        (function-item feedmail-send-it)
+        (function-item message-send-mail-with-mailclient
+                   :tag "Use Mailclient package")
+        (function :tag "Other"))
   :group 'message-sending
   :version "23.2"
   :initialize 'custom-initialize-default
@@ -765,9 +765,9 @@ always query the user whether to use the value.  If it is the symbol
   :group 'message-interface
   :link '(custom-manual "(message)Followup")
   :type '(choice (const :tag "ignore" nil)
-		 (const :tag "use & query" t)
-		 (const use)
-		 (const ask)))
+         (const :tag "use & query" t)
+         (const use)
+         (const ask)))
 
 (defcustom message-use-mail-followup-to 'use
   "Specifies what to do with Mail-Followup-To header.
@@ -778,8 +778,8 @@ always use the value."
   :group 'message-interface
   :link '(custom-manual "(message)Mailing Lists")
   :type '(choice (const :tag "ignore" nil)
-		 (const use)
-		 (const ask)))
+         (const use)
+         (const ask)))
 
 (defcustom message-subscribed-address-functions nil
   "Specifies functions for determining list subscription.
@@ -831,8 +831,8 @@ symbol `never', the posting is not allowed.  If it is the symbol
   :group 'message-interface
   :link '(custom-manual "(message)Message Headers")
   :type '(choice (const always)
-		 (const never)
-		 (const ask)))
+         (const never)
+         (const ask)))
 
 (defcustom message-sendmail-f-is-evil nil
   "Non-nil means don't add \"-f username\" to the sendmail command line.
@@ -849,8 +849,8 @@ If this is nil, use `user-mail-address'.  If it is the symbol
 `header', use the From: header of the message."
   :version "23.2"
   :type '(choice (string :tag "From name")
-		 (const :tag "Use From: header from message" header)
-		 (const :tag "Use `user-mail-address'" nil))
+         (const :tag "Use From: header from message" header)
+         (const :tag "Use `user-mail-address'" nil))
   :link '(custom-manual "(message)Mail Variables")
   :group 'message-sending)
 
@@ -880,18 +880,18 @@ might set this variable to (\"-f\" \"[email-masked]\")."
   :group 'message-sending
   :link '(custom-manual "(message)Mail Variables")
   :type '(choice (function)
-		 (repeat string)))
+         (repeat string)))
 
 (defvar gnus-post-method)
 (defvar gnus-select-method)
 (defcustom message-post-method
   (cond ((and (boundp 'gnus-post-method)
-	      (listp gnus-post-method)
-	      gnus-post-method)
-	 gnus-post-method)
-	((boundp 'gnus-select-method)
-	 gnus-select-method)
-	(t '(nnspool "")))
+          (listp gnus-post-method)
+          gnus-post-method)
+     gnus-post-method)
+    ((boundp 'gnus-select-method)
+     gnus-select-method)
+    (t '(nnspool "")))
   "Method used to post news.
 Note that when posting from inside Gnus, for instance, this
 variable isn't used."
@@ -913,8 +913,8 @@ will not have a visible effect for those headers."
   :group 'message-headers
   :link '(custom-manual "(message)Message Headers")
   :type '(choice (const :tag "None" nil)
-		 (const :tag "All" t)
-		 (repeat (sexp :tag "Header"))))
+         (const :tag "All" t)
+         (repeat (sexp :tag "Header"))))
 
 (defcustom message-fill-column 72
   "Column beyond which automatic line-wrapping should happen.
@@ -923,7 +923,7 @@ auto-fill in message buffers."
   :group 'message-various
   ;; :link '(custom-manual "(message)Message Headers")
   :type '(choice (const :tag "Don't turn on auto fill" nil)
-		 (integer)))
+         (integer)))
 
 (defcustom message-setup-hook nil
   "Normal hook, run each time a new outgoing message is initialized.
@@ -984,9 +984,9 @@ Note that Gnus provides a feature where the reader can click on
 people who read your message will have to change their Gnus
 configuration.  See the variable `gnus-cite-attribution-suffix'."
   :type '(choice
-	  (function-item :tag "plain" message-insert-citation-line)
-	  (function-item :tag "formatted" message-insert-formatted-citation-line)
-	  (function :tag "Other"))
+      (function-item :tag "plain" message-insert-citation-line)
+      (function-item :tag "formatted" message-insert-formatted-citation-line)
+      (function :tag "Other"))
   :link '(custom-manual "(message)Insertion Variables")
   :group 'message-insertion)
 
@@ -1014,8 +1014,8 @@ so you should always check it yourself.
 Please also read the note in the documentation of
 `message-citation-line-function'."
   :type '(choice (const :tag "Plain" "%f writes:")
-		 (const :tag "Include date" "On %a, %b %d %Y, %n wrote:")
-		 string)
+         (const :tag "Include date" "On %a, %b %d %Y, %n wrote:")
+         string)
   :link '(custom-manual "(message)Insertion Variables")
   :version "23.1" ;; No Gnus
   :group 'message-insertion)
@@ -1060,9 +1060,9 @@ Predefined functions include `message-cite-original' and
 `message-cite-original-without-signature'.
 Note that these functions use `mail-citation-hook' if that is non-nil."
   :type '(radio (function-item message-cite-original)
-		(function-item message-cite-original-without-signature)
-		(function-item sc-cite-original)
-		(function :tag "Other"))
+        (function-item message-cite-original-without-signature)
+        (function-item sc-cite-original)
+        (function :tag "Other"))
   :link '(custom-manual "(message)Insertion Variables")
   :version "22.3" ;; Gnus 5.10.12 (changed default)
   :group 'message-insertion)
@@ -1083,8 +1083,8 @@ If a function, the result from the function will be used instead.
 If a form, the result from the form will be used instead."
   :version "23.2"
   :type '(choice string (const :tag "Contents of signature file" t)
-		 function
-		 sexp)
+         function
+         sexp)
   :risky t
   :link '(custom-manual "(message)Insertion Variables")
   :group 'message-insertion)
@@ -1130,8 +1130,8 @@ e.g. using `gnus-posting-styles':
   (eval (set (make-local-variable \\='message-cite-reply-position) \\='above))"
   :version "24.1"
   :type '(choice (const :tag "Reply inline" traditional)
-		 (const :tag "Reply above" above)
-		 (const :tag "Reply below" below))
+         (const :tag "Reply above" above)
+         (const :tag "Reply below" below))
   :group 'message-insertion)
 
 (defcustom message-cite-style nil
@@ -1148,10 +1148,10 @@ use in `gnus-posting-styles', such as:
   :version "24.1"
   :group 'message-insertion
   :type '(choice (const :tag "Do not override variables" :value nil)
-		 (const :tag "MS Outlook" :value message-cite-style-outlook)
-		 (const :tag "Mozilla Thunderbird" :value message-cite-style-thunderbird)
-		 (const :tag "Gmail" :value message-cite-style-gmail)
-		 (variable :tag "User-specified")))
+         (const :tag "MS Outlook" :value message-cite-style-outlook)
+         (const :tag "Mozilla Thunderbird" :value message-cite-style-thunderbird)
+         (const :tag "Gmail" :value message-cite-style-gmail)
+         (variable :tag "User-specified")))
 
 (defconst message-cite-style-outlook
   '((message-cite-function  'message-cite-original)
@@ -1204,8 +1204,8 @@ If stringp, use this; if non-nil, use no host name (user name only)."
   :group 'message-headers
   :link '(custom-manual "(message)News Headers")
   :type '(choice (const :tag "nntp" nil)
-		 (string :tag "name")
-		 (sexp :tag "none" :format "%t" t)))
+         (string :tag "name")
+         (sexp :tag "none" :format "%t" t)))
 
 ;; This can be the name of a buffer, or a cons cell (FUNCTION . ARGS)
 ;; for yanking the original buffer.
@@ -1251,15 +1251,15 @@ called and its result is inserted."
 (defcustom message-default-mail-headers
   ;; Ease the transition from mail-mode to message-mode.  See bugs#4431, 5555.
   (concat (if (and (boundp 'mail-default-reply-to)
-		   (stringp mail-default-reply-to))
-	      (format "Reply-To: %s\n" mail-default-reply-to))
-	  (if (and (boundp 'mail-self-blind)
-		   mail-self-blind)
-	      (format "Bcc: %s\n" user-mail-address))
-	  (if (and (boundp 'mail-archive-file-name)
-		   (stringp mail-archive-file-name))
-	      (format "Fcc: %s\n" mail-archive-file-name))
-	  mail-default-headers)
+           (stringp mail-default-reply-to))
+          (format "Reply-To: %s\n" mail-default-reply-to))
+      (if (and (boundp 'mail-self-blind)
+           mail-self-blind)
+          (format "Bcc: %s\n" user-mail-address))
+      (if (and (boundp 'mail-archive-file-name)
+           (stringp mail-archive-file-name))
+          (format "Fcc: %s\n" mail-archive-file-name))
+      mail-default-headers)
   "A string of header lines to be inserted in outgoing mails."
   :version "23.2"
   :group 'message-headers
@@ -1278,9 +1278,9 @@ called and its result is inserted."
 ;; options -t, and -v if not interactive.
 (defcustom message-mailer-swallows-blank-line
   (if (and (string-match "sparc-sun-sunos\\(\\'\\|[^5]\\)"
-			 system-configuration)
-	   (file-readable-p "/etc/sendmail.cf")
-	   (with-temp-buffer
+             system-configuration)
+       (file-readable-p "/etc/sendmail.cf")
+       (with-temp-buffer
              (insert-file-contents "/etc/sendmail.cf")
              (goto-char (point-min))
              (let ((case-fold-search nil))
@@ -1329,8 +1329,8 @@ This can also be a list of values."
   :group 'message
   :link '(custom-manual "(message)Mail Aliases")
   :type '(choice (const :tag "Use Mailabbrev" abbrev)
-		 (const :tag "Use ecomplete" ecomplete)
-		 (const :tag "No expansion" nil)))
+         (const :tag "Use ecomplete" ecomplete)
+         (const :tag "No expansion" nil)))
 
 (defcustom message-self-insert-commands '(self-insert-command)
   "List of `self-insert-command's used to trigger ecomplete.
@@ -1353,7 +1353,7 @@ If nil, Message won't auto-save."
   :type '(choice directory (const :tag "Don't auto-save" nil)))
 
 (defcustom message-default-charset (and (not enable-multibyte-characters)
-					'iso-8859-1)
+                    'iso-8859-1)
   "Default charset used in non-MULE Emacsen.
 If nil, you might be asked to input the charset."
   :version "21.1"
@@ -1374,8 +1374,8 @@ If a function email is passed as the argument."
   :group 'message
   :link '(custom-manual "(message)Wide Reply")
   :type '(choice (const :tag "Yourself" nil)
-		 regexp
-		 (repeat :tag "Regexp List" regexp)))
+         regexp
+         (repeat :tag "Regexp List" regexp)))
 
 (defsubst message-dont-reply-to-names ()
   (if (functionp message-dont-reply-to-names)
@@ -1392,19 +1392,19 @@ candidates:
 `quoted-text-only'  Allow you to post quoted text only;
 `multiple-copies'   Allow you to post multiple copies;
 `cancel-messages'   Allow you to cancel or supersede messages from
-		    your other email addresses;
+            your other email addresses;
 `canlock-verify'    Allow you to cancel messages without verifying canlock."
   :group 'message
   :type '(set (const empty-article) (const quoted-text-only)
-	      (const multiple-copies) (const cancel-messages)
-	      (const canlock-verify)))
+          (const multiple-copies) (const cancel-messages)
+          (const canlock-verify)))
 
 (defsubst message-gnksa-enable-p (feature)
   (or (not (listp message-shoot-gnksa-feet))
       (memq feature message-shoot-gnksa-feet)))
 
 (defcustom message-hidden-headers '("^References:" "^Face:" "^X-Face:"
-				    "^X-Draft-From:")
+                    "^X-Draft-From:")
   "Regexp of headers to be hidden when composing new messages.
 This can also be a list of regexps to match headers.  Or a list
 starting with `not' and followed by regexps."
@@ -1412,14 +1412,14 @@ starting with `not' and followed by regexps."
   :group 'message
   :link '(custom-manual "(message)Message Headers")
   :type '(choice
-	  :format "%{%t%}: %[Value Type%] %v"
-	  (regexp :menu-tag "regexp" :format "regexp\n%t: %v")
-	  (repeat :menu-tag "(regexp ...)" :format "(regexp ...)\n%v%i"
-		  (regexp :format "%t: %v"))
-	  (cons :menu-tag "(not regexp ...)" :format "(not regexp ...)\n%v"
-		(const not)
-		(repeat :format "%v%i"
-			(regexp :format "%t: %v")))))
+      :format "%{%t%}: %[Value Type%] %v"
+      (regexp :menu-tag "regexp" :format "regexp\n%t: %v")
+      (repeat :menu-tag "(regexp ...)" :format "(regexp ...)\n%v%i"
+          (regexp :format "%t: %v"))
+      (cons :menu-tag "(not regexp ...)" :format "(not regexp ...)\n%v"
+        (const not)
+        (repeat :format "%v%i"
+            (regexp :format "%t: %v")))))
 
 (defcustom message-cite-articles-with-x-no-archive t
   "If non-nil, cite text from articles that has X-No-Archive set."
@@ -1577,39 +1577,39 @@ starting with `not' and followed by regexps."
   (let ((content "[ \t]*\\(.+\\(\n[ \t].*\\)*\\)\n?"))
     `((message-match-to-eoh
        (,(concat "^\\([Tt]o:\\)" content)
-	(progn (goto-char (match-beginning 0)) (match-end 0)) nil
-	(1 'message-header-name)
-	(2 'message-header-to nil t))
+    (progn (goto-char (match-beginning 0)) (match-end 0)) nil
+    (1 'message-header-name)
+    (2 'message-header-to nil t))
        (,(concat "^\\(^[GBF]?[Cc][Cc]:\\|^[Rr]eply-[Tt]o:\\)" content)
-	(progn (goto-char (match-beginning 0)) (match-end 0)) nil
-	(1 'message-header-name)
-	(2 'message-header-cc nil t))
+    (progn (goto-char (match-beginning 0)) (match-end 0)) nil
+    (1 'message-header-name)
+    (2 'message-header-cc nil t))
        (,(concat "^\\([Ss]ubject:\\)" content)
-	(progn (goto-char (match-beginning 0)) (match-end 0)) nil
-	(1 'message-header-name)
-	(2 'message-header-subject nil t))
+    (progn (goto-char (match-beginning 0)) (match-end 0)) nil
+    (1 'message-header-name)
+    (2 'message-header-subject nil t))
        (,(concat "^\\([Nn]ewsgroups:\\|Followup-[Tt]o:\\)" content)
-	(progn (goto-char (match-beginning 0)) (match-end 0)) nil
-	(1 'message-header-name)
-	(2 'message-header-newsgroups nil t))
+    (progn (goto-char (match-beginning 0)) (match-end 0)) nil
+    (1 'message-header-name)
+    (2 'message-header-newsgroups nil t))
        (,(concat "^\\(X-[A-Za-z0-9-]+:\\|In-Reply-To:\\)" content)
-	(progn (goto-char (match-beginning 0)) (match-end 0)) nil
-	(1 'message-header-name)
-	(2 'message-header-xheader))
+    (progn (goto-char (match-beginning 0)) (match-end 0)) nil
+    (1 'message-header-name)
+    (2 'message-header-xheader))
        (,(concat "^\\([A-Z][^: \n\t]+:\\)" content)
-	(progn (goto-char (match-beginning 0)) (match-end 0)) nil
+    (progn (goto-char (match-beginning 0)) (match-end 0)) nil
         (1 'message-header-name)
         (2 'message-header-other nil t)))
       ,@(if (and mail-header-separator
-		 (not (equal mail-header-separator "")))
-	    `((,(concat "^\\(" (regexp-quote mail-header-separator) "\\)$")
-	       1 'message-separator))
-	  nil)
+         (not (equal mail-header-separator "")))
+        `((,(concat "^\\(" (regexp-quote mail-header-separator) "\\)$")
+           1 'message-separator))
+      nil)
       ((lambda (limit)
-	 (re-search-forward (concat "^\\("
-				    message-cite-prefix-regexp
-				    "\\).*")
-			    limit t))
+     (re-search-forward (concat "^\\("
+                    message-cite-prefix-regexp
+                    "\\).*")
+                limit t))
        (0 'message-cited-text))
       ("<#/?\\(multipart\\|part\\|external\\|mml\\|secure\\)[^>]*>"
        (0 'message-mml))))
@@ -1619,8 +1619,8 @@ starting with `not' and followed by regexps."
   '((bold . message-bold-region)
     (underline . underline-region)
     (default . (lambda (b e)
-		 (message-unbold-region b e)
-		 (ununderline-region b e))))
+         (message-unbold-region b e)
+         (ununderline-region b e))))
   "Alist of mail and news faces for facemenu.
 The cdr of each entry is a function for applying the face to a region.")
 
@@ -1667,7 +1667,7 @@ should be sent in several parts.  If it is nil, the size is unlimited."
   :group 'message-buffers
   :link '(custom-manual "(message)Mail Variables")
   :type '(choice (const :tag "unlimited" nil)
-		 (integer 1000000)))
+         (integer 1000000)))
 
 (defcustom message-alternative-emails nil
   "Regexp or predicate function matching alternative email addresses.
@@ -1682,7 +1682,7 @@ off `message-setup-hook'."
   :group 'message-headers
   :link '(custom-manual "(message)Message Headers")
   :type '(choice (const :tag "Always use primary" nil)
-		 regexp
+         regexp
                  function))
 
 (defcustom message-hierarchical-addresses nil
@@ -1705,18 +1705,18 @@ Except if it is nil, use Gnus native MUA; if it is t, use
 `mail-user-agent'."
   :version "22.1"
   :type '(radio (const :tag "Gnus native"
-		       :format "%t\n"
-		       nil)
-		(const :tag "`mail-user-agent'"
-		       :format "%t\n"
-		       t)
-		(function-item :tag "Default Emacs mail"
-			       :format "%t\n"
-			       sendmail-user-agent)
-		(function-item :tag "Emacs interface to MH"
-			       :format "%t\n"
-			       mh-e-user-agent)
-		(function :tag "Other"))
+               :format "%t\n"
+               nil)
+        (const :tag "`mail-user-agent'"
+               :format "%t\n"
+               t)
+        (function-item :tag "Default Emacs mail"
+                   :format "%t\n"
+                   sendmail-user-agent)
+        (function-item :tag "Emacs interface to MH"
+                   :format "%t\n"
+                   mh-e-user-agent)
+        (function :tag "Other"))
   :version "21.1"
   :group 'message)
 
@@ -1738,7 +1738,7 @@ no, only reply back to the author."
   :group 'message-headers
   :link '(custom-manual "(message)News Headers")
   :type '(radio (const :format "%v  " nil)
-		(string :format "FQDN: %v")))
+        (string :format "FQDN: %v")))
 
 (defcustom message-use-idna t
   "Whether to encode non-ASCII in domain names into ASCII according to IDNA."
@@ -1746,8 +1746,8 @@ no, only reply back to the author."
   :group 'message-headers
   :link '(custom-manual "(message)IDNA")
   :type '(choice (const :tag "Ask" ask)
-		 (const :tag "Never" nil)
-		 (const :tag "Always" t)))
+         (const :tag "Never" nil)
+         (const :tag "Always" t)))
 
 (defcustom message-generate-hashcash (if (executable-find "hashcash") 'opportunistic)
   "Whether to generate X-Hashcash: headers.
@@ -1760,8 +1760,8 @@ You must have the \"hashcash\" binary installed, see `hashcash-path'."
   :group 'message-headers
   :link '(custom-manual "(message)Mail Headers")
   :type '(choice (const :tag "Always" t)
-		 (const :tag "Never" nil)
-		 (const :tag "Opportunistic" opportunistic)))
+         (const :tag "Never" nil)
+         (const :tag "Opportunistic" opportunistic)))
 
 ;;; Internal variables.
 
@@ -1784,10 +1784,10 @@ You must have the \"hashcash\" binary installed, see `hashcash-path'."
 ;;; of rmail.el's rmail-unix-mail-delimiter.
 (defvar message-unix-mail-delimiter
   (let ((time-zone-regexp
-	 (concat "\\([A-Z]?[A-Z]?[A-Z][A-Z]\\( DST\\)?"
-		 "\\|[-+]?[0-9][0-9][0-9][0-9]"
-		 "\\|"
-		 "\\) *")))
+     (concat "\\([A-Z]?[A-Z]?[A-Z][A-Z]\\( DST\\)?"
+         "\\|[-+]?[0-9][0-9][0-9][0-9]"
+         "\\|"
+         "\\) *")))
     (concat
      "From "
 
@@ -1836,14 +1836,14 @@ You must have the \"hashcash\" binary installed, see `hashcash-path'."
 
 (defvar message-unsent-separator
   (concat "^ *---+ +Unsent message follows +---+ *$\\|"
-	  "^ *---+ +Returned message +---+ *$\\|"
-	  "^Start of returned message$\\|"
-	  "^ *---+ +Original message +---+ *$\\|"
-	  "^ *--+ +begin message +--+ *$\\|"
-	  "^ *---+ +Original message follows +---+ *$\\|"
-	  "^ *---+ +Undelivered message follows +---+ *$\\|"
-	  "^------ This is a copy of the message, including all the headers. ------ *$\\|"
-	  "^|? *---+ +Message text follows: +---+ *|?$")
+      "^ *---+ +Returned message +---+ *$\\|"
+      "^Start of returned message$\\|"
+      "^ *---+ +Original message +---+ *$\\|"
+      "^ *--+ +begin message +--+ *$\\|"
+      "^ *---+ +Original message follows +---+ *$\\|"
+      "^ *---+ +Undelivered message follows +---+ *$\\|"
+      "^------ This is a copy of the message, including all the headers. ------ *$\\|"
+      "^|? *---+ +Message text follows: +---+ *|?$")
   "A regexp that matches the separator before the text of a failed message.")
 
 (defvar message-field-fillers
@@ -1919,7 +1919,7 @@ You must have the \"hashcash\" binary installed, see `hashcash-path'."
 (defmacro message-delete-line (&optional n)
   "Delete the current line (and the next N lines)."
   `(delete-region (progn (beginning-of-line) (point))
-		  (progn (forward-line ,(or n 1)) (point))))
+          (progn (forward-line ,(or n 1)) (point))))
 
 (defun message-mark-active-p ()
   "Non-nil means the mark and region are currently active in this buffer."
@@ -1928,11 +1928,11 @@ You must have the \"hashcash\" binary installed, see `hashcash-path'."
 (defun message-unquote-tokens (elems)
   "Remove double quotes (\") from strings in list ELEMS."
   (mapcar (lambda (item)
-	    (while (string-match "^\\(.*\\)\"\\(.*\\)$" item)
-	      (setq item (concat (match-string 1 item)
-				 (match-string 2 item))))
-	    item)
-	  elems))
+        (while (string-match "^\\(.*\\)\"\\(.*\\)$" item)
+          (setq item (concat (match-string 1 item)
+                 (match-string 2 item))))
+        item)
+      elems))
 
 (defun message-tokenize-header (header &optional separator)
   "Split HEADER into a list of header elements.
@@ -1941,41 +1941,41 @@ is used by default."
   (if (not header)
       nil
     (let ((regexp (format "[%s]+" (or separator ",")))
-	  (first t)
-	  beg quoted elems paren)
+      (first t)
+      beg quoted elems paren)
       (with-temp-buffer
-	(mm-enable-multibyte)
-	(setq beg (point-min))
-	(insert header)
-	(goto-char (point-min))
-	(while (not (eobp))
-	  (if first
-	      (setq first nil)
-	    (forward-char 1))
-	  (cond ((and (> (point) beg)
-		      (or (eobp)
-			  (and (looking-at regexp)
-			       (not quoted)
-			       (not paren))))
-		 (push (buffer-substring beg (point)) elems)
-		 (setq beg (match-end 0)))
-		((eq (char-after) ?\")
-		 (setq quoted (not quoted)))
-		((and (eq (char-after) ?\()
-		      (not quoted))
-		 (setq paren t))
-		((and (eq (char-after) ?\))
-		      (not quoted))
-		 (setq paren nil))))
-	(nreverse elems)))))
+    (mm-enable-multibyte)
+    (setq beg (point-min))
+    (insert header)
+    (goto-char (point-min))
+    (while (not (eobp))
+      (if first
+          (setq first nil)
+        (forward-char 1))
+      (cond ((and (> (point) beg)
+              (or (eobp)
+              (and (looking-at regexp)
+                   (not quoted)
+                   (not paren))))
+         (push (buffer-substring beg (point)) elems)
+         (setq beg (match-end 0)))
+        ((eq (char-after) ?\")
+         (setq quoted (not quoted)))
+        ((and (eq (char-after) ?\()
+              (not quoted))
+         (setq paren t))
+        ((and (eq (char-after) ?\))
+              (not quoted))
+         (setq paren nil))))
+    (nreverse elems)))))
 
 (autoload 'nnheader-insert-file-contents "nnheader")
 
 (defun message-mail-file-mbox-p (file)
   "Say whether FILE looks like a Unix mbox file."
   (when (and (file-exists-p file)
-	     (file-readable-p file)
-	     (file-regular-p file))
+         (file-readable-p file)
+         (file-regular-p file))
     (with-temp-buffer
       (nnheader-insert-file-contents file)
       (goto-char (point-min))
@@ -1986,10 +1986,10 @@ is used by default."
 The buffer is expected to be narrowed to just the header of the message;
 see `message-narrow-to-headers-or-head'."
   (let* ((inhibit-point-motion-hooks t)
-	 (value (mail-fetch-field header nil (not not-all))))
+     (value (mail-fetch-field header nil (not not-all))))
     (when value
       (while (string-match "\n[\t ]+" value)
-	(setq value (replace-match " " t t value)))
+    (setq value (replace-match " " t t value)))
       value)))
 
 (defun message-field-value (header &optional not-all)
@@ -2009,7 +2009,7 @@ see `message-narrow-to-headers-or-head'."
    (progn
      (forward-line 1)
      (if (re-search-forward "^[^ \n\t]" nil t)
-	 (point-at-bol)
+     (point-at-bol)
        (point-max))))
   (goto-char (point-min)))
 
@@ -2018,21 +2018,21 @@ see `message-narrow-to-headers-or-head'."
   (while headers
     (let (hclean)
       (unless (string-match "^\\([^:]+\\):[ \t]*[^ \t]" (car headers))
-	(error "Invalid header `%s'" (car headers)))
+    (error "Invalid header `%s'" (car headers)))
       (setq hclean (match-string 1 (car headers)))
       (save-restriction
-	(message-narrow-to-headers)
-	(unless (re-search-forward (concat "^" (regexp-quote hclean) ":") nil t)
-	  (goto-char (point-max))
-	  (if (string-match "\n$" (car headers))
-	      (insert (car headers))
-	    (insert (car headers) ?\n)))))
+    (message-narrow-to-headers)
+    (unless (re-search-forward (concat "^" (regexp-quote hclean) ":") nil t)
+      (goto-char (point-max))
+      (if (string-match "\n$" (car headers))
+          (insert (car headers))
+        (insert (car headers) ?\n)))))
     (setq headers (cdr headers))))
 
 (defmacro message-with-reply-buffer (&rest forms)
   "Evaluate FORMS in the reply buffer, if it exists."
   `(when (and (bufferp message-reply-buffer)
-	      (buffer-name message-reply-buffer))
+          (buffer-name message-reply-buffer))
      (with-current-buffer message-reply-buffer
        ,@forms)))
 
@@ -2050,15 +2050,15 @@ see `message-narrow-to-headers-or-head'."
   "Remove list identifiers in `gnus-list-identifiers' from string SUBJECT."
   (require 'gnus-sum)			; for gnus-list-identifiers
   (let ((regexp (if (stringp gnus-list-identifiers)
-		    gnus-list-identifiers
-		  (mapconcat 'identity gnus-list-identifiers " *\\|"))))
+            gnus-list-identifiers
+          (mapconcat 'identity gnus-list-identifiers " *\\|"))))
     (if (string-match (concat "\\(\\(\\(Re: +\\)?\\(" regexp
-			      " *\\)\\)+\\(Re: +\\)?\\)") subject)
-	(concat (substring subject 0 (match-beginning 1))
-		(or (match-string 3 subject)
-		    (match-string 5 subject))
-		(substring subject
-			   (match-end 1)))
+                  " *\\)\\)+\\(Re: +\\)?\\)") subject)
+    (concat (substring subject 0 (match-beginning 1))
+        (or (match-string 3 subject)
+            (match-string 5 subject))
+        (substring subject
+               (match-end 1)))
       subject)))
 
 (defun message-strip-subject-re (subject)
@@ -2072,8 +2072,8 @@ see `message-narrow-to-headers-or-head'."
   :group 'message-various
   :version "22.1" ;; Gnus 5.10.9
   :type '(choice string
-		 (const ".")
-		 (const "?")))
+         (const ".")
+         (const "?")))
 
 ;; FIXME: We also should call `message-strip-subject-encoded-words'
 ;; when forwarding.  Probably in `message-make-forward-subject' and
@@ -2083,79 +2083,79 @@ see `message-narrow-to-headers-or-head'."
   "Fix non-decodable words in SUBJECT."
   ;; Cf. `gnus-simplify-subject-fully'.
   (let* ((case-fold-search t)
-	 (replacement-chars (format "[%s%s%s]"
-				    message-replacement-char
-				    message-replacement-char
-				    message-replacement-char))
-	 (enc-word-re "=\\?\\([^?]+\\)\\?\\([QB]\\)\\?\\([^?]+\\)\\(\\?=\\)")
-	 cs-string
-	 (have-marker
-	  (with-temp-buffer
-	    (insert subject)
-	    (goto-char (point-min))
-	    (when (re-search-forward enc-word-re nil t)
-	      (setq cs-string (match-string 1)))))
-	 cs-coding q-or-b word-beg word-end)
+     (replacement-chars (format "[%s%s%s]"
+                    message-replacement-char
+                    message-replacement-char
+                    message-replacement-char))
+     (enc-word-re "=\\?\\([^?]+\\)\\?\\([QB]\\)\\?\\([^?]+\\)\\(\\?=\\)")
+     cs-string
+     (have-marker
+      (with-temp-buffer
+        (insert subject)
+        (goto-char (point-min))
+        (when (re-search-forward enc-word-re nil t)
+          (setq cs-string (match-string 1)))))
+     cs-coding q-or-b word-beg word-end)
     (if (or (not have-marker) ;; No encoded word found...
-	    ;; ... or double encoding was correct:
-	    (and (stringp cs-string)
-		 (setq cs-string (downcase cs-string))
-		 (mm-coding-system-p (intern cs-string))
-		 (not (prog1
-			  (y-or-n-p
-			   (format "\
+        ;; ... or double encoding was correct:
+        (and (stringp cs-string)
+         (setq cs-string (downcase cs-string))
+         (mm-coding-system-p (intern cs-string))
+         (not (prog1
+              (y-or-n-p
+               (format "\
 Decoded Subject \"%s\"
 contains a valid encoded word.  Decode again? "
-				   subject))
-			(setq cs-coding (intern cs-string))))))
-	subject
+                   subject))
+            (setq cs-coding (intern cs-string))))))
+    subject
       (with-temp-buffer
-	(insert subject)
-	(goto-char (point-min))
-	(while (re-search-forward enc-word-re nil t)
-	  (setq cs-string (downcase (match-string 1))
-		q-or-b    (match-string 2)
-		word-beg (match-beginning 0)
-		word-end (match-end 0))
-	  (setq cs-coding
-		(if (mm-coding-system-p (intern cs-string))
-		    (setq cs-coding (intern cs-string))
-		  nil))
-	  ;; No double encoded subject? => bogus charset.
-	  (unless cs-coding
-	    (setq cs-coding
-		  (read-coding-system
-		   (format-message "\
+    (insert subject)
+    (goto-char (point-min))
+    (while (re-search-forward enc-word-re nil t)
+      (setq cs-string (downcase (match-string 1))
+        q-or-b    (match-string 2)
+        word-beg (match-beginning 0)
+        word-end (match-end 0))
+      (setq cs-coding
+        (if (mm-coding-system-p (intern cs-string))
+            (setq cs-coding (intern cs-string))
+          nil))
+      ;; No double encoded subject? => bogus charset.
+      (unless cs-coding
+        (setq cs-coding
+          (read-coding-system
+           (format-message "\
 Decoded Subject \"%s\"
 contains an encoded word.  The charset `%s' is unknown or invalid.
 Hit RET to replace non-decodable characters with \"%s\" or enter replacement
 charset: "
-			   subject cs-string message-replacement-char)))
-	    (if cs-coding
-		(replace-match (concat "=?" (symbol-name cs-coding)
-				       "?\\2?\\3\\4\\5"))
-	      (save-excursion
-		(goto-char word-beg)
-		(re-search-forward "=\\?\\([^?]+\\)\\?\\([QB]\\)\\?" word-end t)
-		(replace-match "")
-		;; QP or base64
-		(if (string-match "\\`Q\\'" q-or-b)
-		    ;; QP
-		    (progn
-		      (message "Replacing non-decodable characters with \"%s\"."
-			       message-replacement-char)
-		      (while (re-search-forward "\\(=[A-F0-9][A-F0-9]\\)+"
-						word-end t)
-			(replace-match message-replacement-char)))
-		  ;; base64
-		  (message "Replacing non-decodable characters with \"%s\"."
-			   replacement-chars)
-		  (re-search-forward "[^?]+" word-end t)
-		  (replace-match replacement-chars))
-		(re-search-forward "\\?=")
-		(replace-match "")))))
-	(rfc2047-decode-region (point-min) (point-max))
-	(buffer-string)))))
+               subject cs-string message-replacement-char)))
+        (if cs-coding
+        (replace-match (concat "=?" (symbol-name cs-coding)
+                       "?\\2?\\3\\4\\5"))
+          (save-excursion
+        (goto-char word-beg)
+        (re-search-forward "=\\?\\([^?]+\\)\\?\\([QB]\\)\\?" word-end t)
+        (replace-match "")
+        ;; QP or base64
+        (if (string-match "\\`Q\\'" q-or-b)
+            ;; QP
+            (progn
+              (message "Replacing non-decodable characters with \"%s\"."
+                   message-replacement-char)
+              (while (re-search-forward "\\(=[A-F0-9][A-F0-9]\\)+"
+                        word-end t)
+            (replace-match message-replacement-char)))
+          ;; base64
+          (message "Replacing non-decodable characters with \"%s\"."
+               replacement-chars)
+          (re-search-forward "[^?]+" word-end t)
+          (replace-match replacement-chars))
+        (re-search-forward "\\?=")
+        (replace-match "")))))
+    (rfc2047-decode-region (point-min) (point-max))
+    (buffer-string)))))
 
 ;;; Start of functions adopted from `message-utils.el'.
 
@@ -2192,29 +2192,29 @@ Leading \"Re: \" is not stripped by this function.  Use the function
    (list
     (read-from-minibuffer "New subject: ")))
   (cond ((and (not (or (null new-subject) ; new subject not empty
-		       (zerop (string-width new-subject))
-		       (string-match "^[ \t]*$" new-subject))))
-	 (save-excursion
-	   (let ((old-subject
-		  (save-restriction
-		    (message-narrow-to-headers)
-		    (message-fetch-field "Subject"))))
-	     (cond ((not old-subject)
-		    (error "No current subject"))
-		   ((not (string-match
-			  (concat "^[ \t]*"
-				  (regexp-quote new-subject)
-				  "[ \t]*$")
-			  old-subject))  ; yes, it really is a new subject
-		    ;; delete eventual Re: prefix
-		    (setq old-subject
-			  (message-strip-subject-re old-subject))
-		    (message-goto-subject)
-		    (message-delete-line)
-		    (insert (concat "Subject: "
-				    new-subject
-				    " (was: "
-				    old-subject ")\n")))))))))
+               (zerop (string-width new-subject))
+               (string-match "^[ \t]*$" new-subject))))
+     (save-excursion
+       (let ((old-subject
+          (save-restriction
+            (message-narrow-to-headers)
+            (message-fetch-field "Subject"))))
+         (cond ((not old-subject)
+            (error "No current subject"))
+           ((not (string-match
+              (concat "^[ \t]*"
+                  (regexp-quote new-subject)
+                  "[ \t]*$")
+              old-subject))  ; yes, it really is a new subject
+            ;; delete eventual Re: prefix
+            (setq old-subject
+              (message-strip-subject-re old-subject))
+            (message-goto-subject)
+            (message-delete-line)
+            (insert (concat "Subject: "
+                    new-subject
+                    " (was: "
+                    old-subject ")\n")))))))))
 
 (defun message-mark-inserted-region (beg end &optional verbatim)
   "Mark some region in the current article with enclosing tags.
@@ -2249,14 +2249,14 @@ body, set  `message-archive-note' to nil."
   (interactive)
   (if current-prefix-arg
       (setq message-archive-note
-	    (read-from-minibuffer "Reason for No-Archive: "
-				  (cons message-archive-note 0))))
+        (read-from-minibuffer "Reason for No-Archive: "
+                  (cons message-archive-note 0))))
     (save-excursion
       (if (message-goto-signature)
-	  (re-search-backward message-signature-separator))
+      (re-search-backward message-signature-separator))
       (when message-archive-note
-	(insert message-archive-note)
-	(newline))
+    (insert message-archive-note)
+    (newline))
       (message-add-header message-archive-header)
       (message-sort-headers)))
 
@@ -2268,45 +2268,45 @@ With prefix-argument just set Follow-Up, don't cross-post."
     (replace-regexp-in-string
      "\\`.*:" ""
      (completing-read "Followup To: "
-		      (if (boundp 'gnus-newsrc-alist)
-			  gnus-newsrc-alist)
-		      nil nil '("poster" . 0)
-		      (if (boundp 'gnus-group-history)
-			  'gnus-group-history)))))
+              (if (boundp 'gnus-newsrc-alist)
+              gnus-newsrc-alist)
+              nil nil '("poster" . 0)
+              (if (boundp 'gnus-group-history)
+              'gnus-group-history)))))
   (message-remove-header "Follow[Uu]p-[Tt]o" t)
   (message-goto-newsgroups)
   (beginning-of-line)
   ;; if we already did a crosspost before, kill old target
   (if (and message-cross-post-old-target
-	   (re-search-forward
-	    (regexp-quote (concat "," message-cross-post-old-target))
-	    nil t))
+       (re-search-forward
+        (regexp-quote (concat "," message-cross-post-old-target))
+        nil t))
       (replace-match ""))
   ;; unless (followup is to poster or user explicitly asked not
   ;; to cross-post, or target-group is already in Newsgroups)
   ;; add target-group to Newsgroups line.
   (cond ((and (or
-	       ;; def: cross-post, req:no
-	       (and message-cross-post-default (not current-prefix-arg))
-	       ;; def: no-cross-post, req:yes
-	       (and (not message-cross-post-default) current-prefix-arg))
-	      (not (string-match "poster" target-group))
-	      (not (string-match (regexp-quote target-group)
-				 (message-fetch-field "Newsgroups"))))
-	 (end-of-line)
-	 (insert (concat "," target-group))))
+           ;; def: cross-post, req:no
+           (and message-cross-post-default (not current-prefix-arg))
+           ;; def: no-cross-post, req:yes
+           (and (not message-cross-post-default) current-prefix-arg))
+          (not (string-match "poster" target-group))
+          (not (string-match (regexp-quote target-group)
+                 (message-fetch-field "Newsgroups"))))
+     (end-of-line)
+     (insert (concat "," target-group))))
   (end-of-line) ; ensure Followup: comes after Newsgroups:
   ;; unless new followup would be identical to Newsgroups line
   ;; make a new Followup-To line
   (if (not (string-match (concat "^[ \t]*"
-				 target-group
-				 "[ \t]*$")
-			 (message-fetch-field "Newsgroups")))
+                 target-group
+                 "[ \t]*$")
+             (message-fetch-field "Newsgroups")))
       (insert (concat "\nFollowup-To: " target-group)))
   (setq message-cross-post-old-target target-group))
 
 (defun message-cross-post-insert-note (target-group cross-post in-old
-						    _old-groups)
+                            _old-groups)
   "Insert a in message body note about a set Followup or Crosspost.
 If there have been previous notes, delete them.  TARGET-GROUP specifies the
 group to Followup-To.  When CROSS-POST is t, insert note about
@@ -2316,25 +2316,25 @@ been made to before the user asked for a Crosspost."
   ;; start scanning body for previous uses
   (message-goto-signature)
   (let ((head (re-search-backward
-	       (concat "^" mail-header-separator)
-	       nil t))) ; just search in body
+           (concat "^" mail-header-separator)
+           nil t))) ; just search in body
     (message-goto-signature)
     (while (re-search-backward
-	    (concat "^" (regexp-quote message-cross-post-note) ".*")
-	    head t)
+        (concat "^" (regexp-quote message-cross-post-note) ".*")
+        head t)
       (message-delete-line))
     (message-goto-signature)
     (while (re-search-backward
-	    (concat "^" (regexp-quote message-followup-to-note) ".*")
-	    head t)
+        (concat "^" (regexp-quote message-followup-to-note) ".*")
+        head t)
       (message-delete-line))
     ;; insert new note
     (if (message-goto-signature)
-	(re-search-backward message-signature-separator))
+    (re-search-backward message-signature-separator))
     (if (or in-old
-	    (not cross-post)
-	    (string-match "^[ \t]*poster[ \t]*$" target-group))
-	(insert (concat message-followup-to-note target-group "\n"))
+        (not cross-post)
+        (string-match "^[ \t]*poster[ \t]*$" target-group))
+    (insert (concat message-followup-to-note target-group "\n"))
       (insert (concat message-cross-post-note target-group "\n")))))
 
 (defun message-cross-post-followup-to (target-group)
@@ -2345,40 +2345,40 @@ With prefix-argument just set Follow-Up, don't cross-post."
     (replace-regexp-in-string
      "\\`.*:" ""
      (completing-read "Followup To: "
-		      (if (boundp 'gnus-newsrc-alist)
-			  gnus-newsrc-alist)
-		      nil nil '("poster" . 0)
-		      (if (boundp 'gnus-group-history)
-			  'gnus-group-history)))))
+              (if (boundp 'gnus-newsrc-alist)
+              gnus-newsrc-alist)
+              nil nil '("poster" . 0)
+              (if (boundp 'gnus-group-history)
+              'gnus-group-history)))))
   (when (fboundp 'gnus-group-real-name)
     (setq target-group (gnus-group-real-name target-group)))
   (cond ((not (or (null target-group) ; new subject not empty
-		  (zerop (string-width target-group))
-		  (string-match "^[ \t]*$" target-group)))
-	 (save-excursion
-	   (let* ((old-groups (message-fetch-field "Newsgroups"))
-		  (in-old (string-match
-			   (regexp-quote target-group)
-			   (or old-groups ""))))
-	     ;; check whether target exactly matches old Newsgroups
-	     (cond ((not old-groups)
-		    (error "No current newsgroup"))
-		   ((or (not in-old)
-			(not (string-match
-			      (concat "^[ \t]*"
-				      (regexp-quote target-group)
-				      "[ \t]*$")
-			      old-groups)))
-		    ;; yes, Newsgroups line must change
-		    (message-cross-post-followup-to-header target-group)
-		    ;; insert note whether we do cross-post or followup-to
-		    (funcall message-cross-post-note-function
-			     target-group
-			     (if (or (and message-cross-post-default
-					  (not current-prefix-arg))
-				     (and (not message-cross-post-default)
-					  current-prefix-arg)) t)
-			     in-old old-groups))))))))
+          (zerop (string-width target-group))
+          (string-match "^[ \t]*$" target-group)))
+     (save-excursion
+       (let* ((old-groups (message-fetch-field "Newsgroups"))
+          (in-old (string-match
+               (regexp-quote target-group)
+               (or old-groups ""))))
+         ;; check whether target exactly matches old Newsgroups
+         (cond ((not old-groups)
+            (error "No current newsgroup"))
+           ((or (not in-old)
+            (not (string-match
+                  (concat "^[ \t]*"
+                      (regexp-quote target-group)
+                      "[ \t]*$")
+                  old-groups)))
+            ;; yes, Newsgroups line must change
+            (message-cross-post-followup-to-header target-group)
+            ;; insert note whether we do cross-post or followup-to
+            (funcall message-cross-post-note-function
+                 target-group
+                 (if (or (and message-cross-post-default
+                      (not current-prefix-arg))
+                     (and (not message-cross-post-default)
+                      current-prefix-arg)) t)
+                 in-old old-groups))))))))
 
 ;;; Reduce To: to Cc: or Bcc: header
 
@@ -2386,25 +2386,25 @@ With prefix-argument just set Follow-Up, don't cross-post."
  "Replace contents of To: header with contents of Cc: or Bcc: header."
  (interactive)
  (let ((cc-content
-	(save-restriction (message-narrow-to-headers)
-			  (message-fetch-field "cc")))
+    (save-restriction (message-narrow-to-headers)
+              (message-fetch-field "cc")))
        (bcc nil))
    (if (and (not cc-content)
-	    (setq cc-content
-		  (save-restriction
-		    (message-narrow-to-headers)
-		    (message-fetch-field "bcc"))))
+        (setq cc-content
+          (save-restriction
+            (message-narrow-to-headers)
+            (message-fetch-field "bcc"))))
        (setq bcc t))
    (cond (cc-content
-	  (save-excursion
-	    (message-goto-to)
-	    (message-delete-line)
-	    (insert (concat "To: " cc-content "\n"))
-	    (save-restriction
-	      (message-narrow-to-headers)
-	      (message-remove-header (if bcc
-					 "bcc"
-				       "cc"))))))))
+      (save-excursion
+        (message-goto-to)
+        (message-delete-line)
+        (insert (concat "To: " cc-content "\n"))
+        (save-restriction
+          (message-narrow-to-headers)
+          (message-remove-header (if bcc
+                     "bcc"
+                       "cc"))))))))
 
 ;;; End of functions adopted from `message-utils.el'.
 
@@ -2416,43 +2416,43 @@ If REVERSE, remove headers that doesn't match HEADER.
 Return the number of headers removed."
   (goto-char (point-min))
   (let ((regexp (if is-regexp header (concat "^" (regexp-quote header) ":")))
-	(number 0)
-	(case-fold-search t)
-	last)
+    (number 0)
+    (case-fold-search t)
+    last)
     (while (and (not (eobp))
-		(not last))
+        (not last))
       (if (if reverse
-	      (and (not (looking-at regexp))
-		   ;; Don't remove things not looking like header.
-		   (looking-at "[!-9;-~]+:"))
-	    (looking-at regexp))
-	  (progn
-	    (cl-incf number)
-	    (when first
-	      (setq last t))
-	    (delete-region
-	     (point)
-	     ;; There might be a continuation header, so we have to search
-	     ;; until we find a new non-continuation line.
-	     (progn
-	       (forward-line 1)
-	       (if (re-search-forward "^[^ \t]" nil t)
-		   (goto-char (match-beginning 0))
-		 (point-max)))))
-	(forward-line 1)
-	(if (re-search-forward "^[^ \t]" nil t)
-	    (goto-char (match-beginning 0))
-	  (goto-char (point-max)))))
+          (and (not (looking-at regexp))
+           ;; Don't remove things not looking like header.
+           (looking-at "[!-9;-~]+:"))
+        (looking-at regexp))
+      (progn
+        (cl-incf number)
+        (when first
+          (setq last t))
+        (delete-region
+         (point)
+         ;; There might be a continuation header, so we have to search
+         ;; until we find a new non-continuation line.
+         (progn
+           (forward-line 1)
+           (if (re-search-forward "^[^ \t]" nil t)
+           (goto-char (match-beginning 0))
+         (point-max)))))
+    (forward-line 1)
+    (if (re-search-forward "^[^ \t]" nil t)
+        (goto-char (match-beginning 0))
+      (goto-char (point-max)))))
     number))
 
 (defun message-remove-first-header (header)
   "Remove the first instance of HEADER if there is more than one."
   (let ((count 0)
-	(regexp (concat "^" (regexp-quote header) ":")))
+    (regexp (concat "^" (regexp-quote header) ":")))
     (save-excursion
       (goto-char (point-min))
       (while (re-search-forward regexp nil t)
-	(cl-incf count)))
+    (cl-incf count)))
     (while (> count 1)
       (message-remove-header header nil t)
       (cl-decf count))))
@@ -2463,7 +2463,7 @@ Return the number of headers removed."
   (narrow-to-region
    (goto-char (point-min))
    (if (re-search-forward
-	(concat "^" (regexp-quote mail-header-separator) "\n") nil t)
+    (concat "^" (regexp-quote mail-header-separator) "\n") nil t)
        (match-beginning 0)
      (point-max)))
   (goto-char (point-min)))
@@ -2491,9 +2491,9 @@ Point is left at the beginning of the narrowed-to region."
   (narrow-to-region
    (goto-char (point-min))
    (if (re-search-forward (concat "\\(\n\\)\n\\|^\\("
-				  (regexp-quote mail-header-separator)
-				  "\n\\)")
-			  nil t)
+                  (regexp-quote mail-header-separator)
+                  "\n\\)")
+              nil t)
        (or (match-end 1) (match-beginning 2))
      (point-max)))
   (goto-char (point-min)))
@@ -2502,22 +2502,22 @@ Point is left at the beginning of the narrowed-to region."
   "Say whether the current buffer contains a news message."
   (and (not message-this-is-mail)
        (or message-this-is-news
-	   (save-excursion
-	     (save-restriction
-	       (message-narrow-to-headers)
-	       (and (message-fetch-field "newsgroups")
-		    (not (message-fetch-field "posted-to"))))))))
+       (save-excursion
+         (save-restriction
+           (message-narrow-to-headers)
+           (and (message-fetch-field "newsgroups")
+            (not (message-fetch-field "posted-to"))))))))
 
 (defun message-mail-p ()
   "Say whether the current buffer contains a mail message."
   (and (not message-this-is-news)
        (or message-this-is-mail
-	   (save-excursion
-	     (save-restriction
-	       (message-narrow-to-headers)
-	       (or (message-fetch-field "to")
-		   (message-fetch-field "cc")
-		   (message-fetch-field "bcc")))))))
+       (save-excursion
+         (save-restriction
+           (message-narrow-to-headers)
+           (or (message-fetch-field "to")
+           (message-fetch-field "cc")
+           (message-fetch-field "bcc")))))))
 
 (defun message-subscribed-p ()
   "Say whether we need to insert a MFT header."
@@ -2531,8 +2531,8 @@ Point is left at the beginning of the narrowed-to region."
   (beginning-of-line)
   (or (eobp) (forward-char 1))
   (not (if (re-search-forward "^[^ \t]" nil t)
-	   (beginning-of-line)
-	 (goto-char (point-max)))))
+       (beginning-of-line)
+     (goto-char (point-max)))))
 
 (defun message-sort-headers-1 ()
   "Sort the buffer as headers using `message-rank' text props."
@@ -2546,7 +2546,7 @@ Point is left at the beginning of the narrowed-to region."
        (forward-char -1)))
    (lambda ()
      (or (get-text-property (point) 'message-rank)
-	 10000))))
+     10000))))
 
 (defun message-sort-headers ()
   "Sort the headers of the current message according to `message-header-format-alist'."
@@ -2554,19 +2554,19 @@ Point is left at the beginning of the narrowed-to region."
   (save-excursion
     (save-restriction
       (let ((max (1+ (length message-header-format-alist)))
-	    rank)
-	(message-narrow-to-headers)
-	(while (re-search-forward "^[^ \n]+:" nil t)
-	  (put-text-property
-	   (match-beginning 0) (1+ (match-beginning 0))
-	   'message-rank
-	   (if (setq rank (length (memq (assq (intern (buffer-substring
-						       (match-beginning 0)
-						       (1- (match-end 0))))
-					      message-header-format-alist)
-					message-header-format-alist)))
-	       (- max rank)
-	     (1+ max)))))
+        rank)
+    (message-narrow-to-headers)
+    (while (re-search-forward "^[^ \n]+:" nil t)
+      (put-text-property
+       (match-beginning 0) (1+ (match-beginning 0))
+       'message-rank
+       (if (setq rank (length (memq (assq (intern (buffer-substring
+                               (match-beginning 0)
+                               (1- (match-end 0))))
+                          message-header-format-alist)
+                    message-header-format-alist)))
+           (- max rank)
+         (1+ max)))))
       (message-sort-headers-1))))
 
 (defun message-kill-address ()
@@ -2588,15 +2588,15 @@ manual.  With two \\[universal-argument]'s, display the EasyPG or
 PGG manual, depending on the value of `mml2015-use'."
   (interactive "p")
   (info (format "(%s)Top"
-		(cond ((eq arg 16)
-		       (require 'mml2015)
-		       mml2015-use)
-		      ((eq arg  4) 'emacs-mime)
-		      ((and (not (booleanp arg))
-			    (symbolp arg))
-		       arg)
-		      (t
-		       'message)))))
+        (cond ((eq arg 16)
+               (require 'mml2015)
+               mml2015-use)
+              ((eq arg  4) 'emacs-mime)
+              ((and (not (booleanp arg))
+                (symbolp arg))
+               arg)
+              (t
+               'message)))))
 
 (defun message-all-recipients ()
   "Return a list of all recipients in the message, looking at TO, Cc and Bcc.
@@ -2828,8 +2828,8 @@ message composition doesn't break too bad."
   ;; property list (rather than a list of property symbols), to be
   ;; directly useful for `remove-text-properties'.
   '(field nil read-only nil invisible nil intangible nil
-	  mouse-face nil modification-hooks nil insert-in-front-hooks nil
-	  insert-behind-hooks nil point-entered nil point-left nil)
+      mouse-face nil modification-hooks nil insert-in-front-hooks nil
+      insert-behind-hooks nil point-entered nil point-left nil)
   ;; Other special properties:
   ;; category, face, display: probably doesn't do any harm.
   ;; fontified: is used by font-lock.
@@ -2844,12 +2844,12 @@ It uses the properties `intangible', `invisible', `modification-hooks'
 and `read-only' when translating ascii or kana text to kanji text.
 These properties are essential to work, so we should never strip them."
   (not (and (boundp 'egg-modefull-mode)
-	    (symbol-value 'egg-modefull-mode)
-	    (or (memq (get-text-property pos 'intangible)
-		      '(its-part-1 its-part-2))
-		(get-text-property pos 'egg-end)
-		(get-text-property pos 'egg-lang)
-		(get-text-property pos 'egg-start)))))
+        (symbol-value 'egg-modefull-mode)
+        (or (memq (get-text-property pos 'intangible)
+              '(its-part-1 its-part-2))
+        (get-text-property pos 'egg-end)
+        (get-text-property pos 'egg-lang)
+        (get-text-property pos 'egg-start)))))
 
 (defsubst message-mail-alias-type-p (type)
   (if (atom message-mail-alias-type)
@@ -2861,10 +2861,10 @@ These properties are essential to work, so we should never strip them."
 This function is intended to be called from `after-change-functions'.
 See also `message-forbidden-properties'."
   (when (and (message-mail-alias-type-p 'ecomplete)
-	     (memq this-command message-self-insert-commands))
+         (memq this-command message-self-insert-commands))
     (message-display-abbrev))
   (when (and message-strip-special-text-properties
-	     (message-tamago-not-in-use-p begin))
+         (message-tamago-not-in-use-p begin))
     (let ((inhibit-read-only t))
       (remove-text-properties begin end message-forbidden-properties))))
 
@@ -2899,20 +2899,20 @@ Like Text Mode but with these additional commands:\\<message-mode-map>
 C-c C-s  `message-send' (send the message)  C-c C-c  `message-send-and-exit'
 C-c C-d  Postpone sending the message       C-c C-k  Kill the message
 C-c C-f  move to a header field (and create it if there isn't):
-	 C-c C-f C-t  move to To	C-c C-f C-s  move to Subject
-	 C-c C-f C-c  move to Cc	C-c C-f C-b  move to Bcc
-	 C-c C-f C-w  move to Fcc	C-c C-f C-r  move to Reply-To
-	 C-c C-f C-u  move to Summary	C-c C-f C-n  move to Newsgroups
-	 C-c C-f C-k  move to Keywords	C-c C-f C-d  move to Distribution
-	 C-c C-f C-o  move to From (\"Originator\")
-	 C-c C-f C-f  move to Followup-To
-	 C-c C-f C-m  move to Mail-Followup-To
-	 C-c C-f C-e  move to Expires
-	 C-c C-f C-i  cycle through Importance values
-	 C-c C-f s    change subject and append \"(was: <Old Subject>)\"
-	 C-c C-f x    crossposting with FollowUp-To header and note in body
-	 C-c C-f t    replace To: header with contents of Cc: or Bcc:
-	 C-c C-f a    Insert X-No-Archive: header and a note in the body
+     C-c C-f C-t  move to To	C-c C-f C-s  move to Subject
+     C-c C-f C-c  move to Cc	C-c C-f C-b  move to Bcc
+     C-c C-f C-w  move to Fcc	C-c C-f C-r  move to Reply-To
+     C-c C-f C-u  move to Summary	C-c C-f C-n  move to Newsgroups
+     C-c C-f C-k  move to Keywords	C-c C-f C-d  move to Distribution
+     C-c C-f C-o  move to From (\"Originator\")
+     C-c C-f C-f  move to Followup-To
+     C-c C-f C-m  move to Mail-Followup-To
+     C-c C-f C-e  move to Expires
+     C-c C-f C-i  cycle through Importance values
+     C-c C-f s    change subject and append \"(was: <Old Subject>)\"
+     C-c C-f x    crossposting with FollowUp-To header and note in body
+     C-c C-f t    replace To: header with contents of Cc: or Bcc:
+     C-c C-f a    Insert X-No-Archive: header and a note in the body
 C-c C-t  `message-insert-to' (add a To header to a news followup)
 C-c C-l  `message-to-list-only' (removes all but list address in to/cc)
 C-c C-n  `message-insert-newsgroups' (add a Newsgroup header to a news reply)
@@ -2942,11 +2942,11 @@ M-RET    `message-newline-and-reformat' (break the line and reformat)."
   (setq buffer-offer-save t)
   (set (make-local-variable 'facemenu-add-face-function)
        (lambda (face end)
-	 (let ((face-fun (cdr (assq face message-face-alist))))
-	   (if face-fun
-	       (funcall face-fun (point) end)
-	     (error "Face %s not configured for %s mode" face mode-name)))
-	 ""))
+     (let ((face-fun (cdr (assq face message-face-alist))))
+       (if face-fun
+           (funcall face-fun (point) end)
+         (error "Face %s not configured for %s mode" face mode-name)))
+     ""))
   (set (make-local-variable 'facemenu-remove-face-function) t)
   (set (make-local-variable 'message-reply-headers) nil)
   (make-local-variable 'message-newsreader)
@@ -2964,7 +2964,7 @@ M-RET    `message-newline-and-reformat' (break the line and reformat)."
   (when message-yank-prefix
     (set (make-local-variable 'comment-start) message-yank-prefix)
     (set (make-local-variable 'comment-start-skip)
-	 (concat "^" (regexp-quote message-yank-prefix) "[ \t]*")))
+     (concat "^" (regexp-quote message-yank-prefix) "[ \t]*")))
   (set (make-local-variable 'font-lock-defaults)
        '(message-font-lock-keywords t))
   (if (boundp 'tool-bar-map)
@@ -2973,7 +2973,7 @@ M-RET    `message-newline-and-reformat' (break the line and reformat)."
   (easy-menu-add message-mode-field-menu message-mode-map)
   ;; Mmmm... Forbidden properties...
   (add-hook 'after-change-functions #'message-strip-forbidden-properties
-	    nil 'local)
+        nil 'local)
   ;; Allow mail alias things.
   (cond
    ((message-mail-alias-type-p 'abbrev)
@@ -3007,26 +3007,26 @@ M-RET    `message-newline-and-reformat' (break the line and reformat)."
   (make-local-variable 'adaptive-fill-regexp)
   (make-local-variable 'adaptive-fill-first-line-regexp)
   (let ((quote-prefix-regexp
-	 ;; User should change message-cite-prefix-regexp if
-	 ;; message-yank-prefix is set to an abnormal value.
-	 (concat "\\(" message-cite-prefix-regexp "\\)[ \t]*")))
+     ;; User should change message-cite-prefix-regexp if
+     ;; message-yank-prefix is set to an abnormal value.
+     (concat "\\(" message-cite-prefix-regexp "\\)[ \t]*")))
     (setq paragraph-start
-	  (concat
-	   (regexp-quote mail-header-separator) "$\\|"
-	   "[ \t]*$\\|"			; blank lines
-	   "-- $\\|"			; signature delimiter
-	   "---+$\\|"		   ; delimiters for forwarded messages
-	   page-delimiter "$\\|"	; spoiler warnings
-	   ".*wrote:$\\|"		; attribution lines
-	   quote-prefix-regexp "$\\|"	; empty lines in quoted text
-					; mml tags
-	   "<#!*/?\\(multipart\\|part\\|external\\|mml\\|secure\\)"))
+      (concat
+       (regexp-quote mail-header-separator) "$\\|"
+       "[ \t]*$\\|"			; blank lines
+       "-- $\\|"			; signature delimiter
+       "---+$\\|"		   ; delimiters for forwarded messages
+       page-delimiter "$\\|"	; spoiler warnings
+       ".*wrote:$\\|"		; attribution lines
+       quote-prefix-regexp "$\\|"	; empty lines in quoted text
+                    ; mml tags
+       "<#!*/?\\(multipart\\|part\\|external\\|mml\\|secure\\)"))
     (setq paragraph-separate paragraph-start)
     (setq adaptive-fill-regexp
-	  (concat quote-prefix-regexp "\\|" adaptive-fill-regexp))
+      (concat quote-prefix-regexp "\\|" adaptive-fill-regexp))
     (setq adaptive-fill-first-line-regexp
-	  (concat quote-prefix-regexp "\\|"
-		  adaptive-fill-first-line-regexp)))
+      (concat quote-prefix-regexp "\\|"
+          adaptive-fill-first-line-regexp)))
   (setq-local auto-fill-inhibit-regexp nil)
   (setq-local normal-auto-fill-function 'message-do-auto-fill))
 
@@ -3130,20 +3130,20 @@ Returns point."
       ;; If the message is mangled, find the end of the headers the
       ;; hard way.
       (progn
-	;; Skip past all headers and continuation lines.
-	(while (looking-at "[^\t\n :]+:\\|[\t ]+[^\t\n ]")
-	  (forward-line 1))
-	;; We're now at the first empty line, so perhaps move past it.
-	(when (and (eolp)
-		   (not (eobp)))
-	  (forward-line 1))
-	(point))))
+    ;; Skip past all headers and continuation lines.
+    (while (looking-at "[^\t\n :]+:\\|[\t ]+[^\t\n ]")
+      (forward-line 1))
+    ;; We're now at the first empty line, so perhaps move past it.
+    (when (and (eolp)
+           (not (eobp)))
+      (forward-line 1))
+    (point))))
 
 (defun message-in-body-p ()
   "Return t if point is in the message body."
   (>= (point)
       (save-excursion
-	(message-goto-body))))
+    (message-goto-body))))
 
 (defun message-goto-eoh (&optional interactive)
   "Move point to the end of the headers."
@@ -3181,8 +3181,8 @@ Cc: header are also put into the MFT."
       (message-remove-header "Mail-Followup-To")
       (setq cc (and include-cc (message-fetch-field "Cc")))
       (setq tos (if cc
-		    (concat (message-fetch-field "To") "," cc)
-		  (message-fetch-field "To"))))
+            (concat (message-fetch-field "To") "," cc)
+          (message-fetch-field "To"))))
     (message-goto-mail-followup-to)
     (insert (concat tos ", " user-mail-address))))
 
@@ -3194,16 +3194,16 @@ If the original author requested not to be sent mail, don't insert unless the
 prefix FORCE is given."
   (interactive "P")
   (let* ((mct (message-fetch-reply-field "mail-copies-to"))
-	 (dont (and mct (or (equal (downcase mct) "never")
-			    (equal (downcase mct) "nobody"))))
-	 (to (or (message-fetch-reply-field "mail-reply-to")
-		 (message-fetch-reply-field "reply-to")
-		 (message-fetch-reply-field "from"))))
+     (dont (and mct (or (equal (downcase mct) "never")
+                (equal (downcase mct) "nobody"))))
+     (to (or (message-fetch-reply-field "mail-reply-to")
+         (message-fetch-reply-field "reply-to")
+         (message-fetch-reply-field "from"))))
     (when (and dont to)
       (message
        (if force
-	   "Ignoring the user request not to have copies sent via mail"
-	 "Complying with the user request not to have copies sent via mail")))
+       "Ignoring the user request not to have copies sent via mail"
+     "Complying with the user request not to have copies sent via mail")))
     (when (and force (not to))
       (error "No mail address in the article"))
     (when (and to (or force (not dont)))
@@ -3213,7 +3213,7 @@ prefix FORCE is given."
   "Insert To and Cc headers as if you were doing a wide reply."
   (interactive)
   (let ((headers (message-with-reply-buffer
-		   (message-get-reply-headers t))))
+           (message-get-reply-headers t))))
     (message-carefully-insert-headers headers)))
 
 (defcustom message-header-synonyms
@@ -3238,46 +3238,46 @@ or in the synonym headers, defined by `message-header-synonyms'."
   ;; (mail-strip-quoted-names "Foo Bar <foo@bar>, bla@fasel (Bla Fasel)")
   (dolist (header headers)
     (let* ((header-name (symbol-name (car header)))
-	   (new-header (cdr header))
-	   (synonyms (cl-loop for synonym in message-header-synonyms
-			      when (memq (car header) synonym) return synonym))
-	   (old-header
-	    (cl-loop for synonym in synonyms
-		     for old-header = (mail-fetch-field (symbol-name synonym))
-		     when (and old-header (string-match new-header old-header))
-		     return synonym)))
+       (new-header (cdr header))
+       (synonyms (cl-loop for synonym in message-header-synonyms
+                  when (memq (car header) synonym) return synonym))
+       (old-header
+        (cl-loop for synonym in synonyms
+             for old-header = (mail-fetch-field (symbol-name synonym))
+             when (and old-header (string-match new-header old-header))
+             return synonym)))
       (if old-header
-	  (message "already have `%s' in `%s'" new-header old-header)
-	(when (and (message-position-on-field header-name)
-		   (setq old-header (mail-fetch-field header-name))
-		   (not (string-match "\\` *\\'" old-header)))
-	  (insert ", "))
-	(insert new-header)))))
+      (message "already have `%s' in `%s'" new-header old-header)
+    (when (and (message-position-on-field header-name)
+           (setq old-header (mail-fetch-field header-name))
+           (not (string-match "\\` *\\'" old-header)))
+      (insert ", "))
+    (insert new-header)))))
 
 (defun message-widen-reply ()
   "Widen the reply to include maximum recipients."
   (interactive)
   (let ((follow-to
-	 (and (bufferp message-reply-buffer)
-	      (buffer-name message-reply-buffer)
-	      (with-current-buffer message-reply-buffer
-		(message-get-reply-headers t)))))
+     (and (bufferp message-reply-buffer)
+          (buffer-name message-reply-buffer)
+          (with-current-buffer message-reply-buffer
+        (message-get-reply-headers t)))))
     (save-excursion
       (save-restriction
-	(message-narrow-to-headers)
-	(dolist (elem follow-to)
-	  (message-remove-header (symbol-name (car elem)))
-	  (goto-char (point-min))
-	  (insert (symbol-name (car elem)) ": "
-		  (cdr elem) "\n"))))))
+    (message-narrow-to-headers)
+    (dolist (elem follow-to)
+      (message-remove-header (symbol-name (car elem)))
+      (goto-char (point-min))
+      (insert (symbol-name (car elem)) ": "
+          (cdr elem) "\n"))))))
 
 (defun message-insert-newsgroups ()
   "Insert the Newsgroups header from the article being replied to."
   (interactive)
   (let ((old-newsgroups (mail-fetch-field "newsgroups"))
-	(new-newsgroups (message-fetch-reply-field "newsgroups"))
-	(first t)
-	insert-newsgroups)
+    (new-newsgroups (message-fetch-reply-field "newsgroups"))
+    (first t)
+    insert-newsgroups)
     (message-position-on-field "Newsgroups")
     (cond
      ((not new-newsgroups)
@@ -3286,21 +3286,21 @@ or in the synonym headers, defined by `message-header-synonyms'."
       (insert new-newsgroups))
      (t
       (setq new-newsgroups (split-string new-newsgroups "[, ]+")
-	    old-newsgroups (split-string old-newsgroups "[, ]+"))
+        old-newsgroups (split-string old-newsgroups "[, ]+"))
       (dolist (group new-newsgroups)
-	(unless (member group old-newsgroups)
-	  (push group insert-newsgroups)))
+    (unless (member group old-newsgroups)
+      (push group insert-newsgroups)))
       (if (null insert-newsgroups)
-	  (error "Newgroup%s already in the header"
-		 (if (> (length new-newsgroups) 1)
-		     "s" ""))
-	(when old-newsgroups
-	  (setq first nil))
-	(dolist (group insert-newsgroups)
-	  (unless first
-	    (insert ","))
-	  (setq first nil)
-	  (insert group)))))))
+      (error "Newgroup%s already in the header"
+         (if (> (length new-newsgroups) 1)
+             "s" ""))
+    (when old-newsgroups
+      (setq first nil))
+    (dolist (group insert-newsgroups)
+      (unless first
+        (insert ","))
+      (setq first nil)
+      (insert group)))))))
 
 
 
@@ -3314,20 +3314,20 @@ or in the synonym headers, defined by `message-header-synonyms'."
       (goto-char beg)
       ;; snarf citation prefix, if appropriate
       (unless (eq (point) (progn (beginning-of-line) (point)))
-	(when (looking-at message-cite-prefix-regexp)
-	  (setq citeprefix (match-string 0))))
+    (when (looking-at message-cite-prefix-regexp)
+      (setq citeprefix (match-string 0))))
       (goto-char end)
       (delete-region (point) (if (not (message-goto-signature))
-				 (point)
-			       (forward-line -2)
-			       (point)))
+                 (point)
+                   (forward-line -2)
+                   (point)))
       (insert "\n")
       (goto-char beg)
       (delete-region beg (progn (message-goto-body)
-				(forward-line 2)
-				(point)))
+                (forward-line 2)
+                (point)))
       (when citeprefix
-	(insert citeprefix))))
+    (insert citeprefix))))
   (when (message-goto-signature)
     (forward-line -2)))
 
@@ -3339,16 +3339,16 @@ of lines before the signature intact."
   (save-excursion
     (save-restriction
       (let ((point (point)))
-	(narrow-to-region point (point-max))
-	(message-goto-signature)
-	(unless (eobp)
-	  (if (and arg (numberp arg))
-	      (forward-line (- -1 arg))
-	    (end-of-line -1)))
-	(unless (= point (point))
-	  (kill-region point (point))
-	  (unless (bolp)
-	    (insert "\n")))))))
+    (narrow-to-region point (point-max))
+    (message-goto-signature)
+    (unless (eobp)
+      (if (and arg (numberp arg))
+          (forward-line (- -1 arg))
+        (end-of-line -1)))
+    (unless (= point (point))
+      (kill-region point (point))
+      (unless (bolp)
+        (insert "\n")))))))
 
 (defun message-newline-and-reformat (&optional arg not-break)
   "Insert four newlines, and then reformat if inside quoted text.
@@ -3363,10 +3363,10 @@ Prefix arg means justify as well."
     (setq bolp (= beg point))
     ;; Find first line of the paragraph.
     (if not-break
-	(while (and (not (eobp))
-		    (not (looking-at message-cite-prefix-regexp))
-		    (looking-at paragraph-start))
-	  (forward-line 1)))
+    (while (and (not (eobp))
+            (not (looking-at message-cite-prefix-regexp))
+            (looking-at paragraph-start))
+      (forward-line 1)))
     ;; Find the prefix
     (when (looking-at message-cite-prefix-regexp)
       (setq quoted (match-string 0))
@@ -3374,70 +3374,70 @@ Prefix arg means justify as well."
       (looking-at "[ \t]*")
       (setq leading-space (match-string 0)))
     (if (and quoted
-	     (not not-break)
-	     (not bolp)
-	     (< (- point beg) (length quoted)))
-	;; break inside the cite prefix.
-	(setq quoted nil
-	      end nil))
+         (not not-break)
+         (not bolp)
+         (< (- point beg) (length quoted)))
+    ;; break inside the cite prefix.
+    (setq quoted nil
+          end nil))
     (if quoted
-	(progn
-	  (forward-line 1)
-	  (while (and (not (eobp))
-		      (not (looking-at paragraph-separate))
-		      (looking-at message-cite-prefix-regexp)
-		      (equal quoted (match-string 0)))
-	    (goto-char (match-end 0))
-	    (looking-at "[ \t]*")
-	    (if (> (length leading-space) (length (match-string 0)))
-		(setq leading-space (match-string 0)))
-	    (forward-line 1))
-	  (setq end (point))
-	  (goto-char beg)
-	  (while (and (if (bobp) nil (forward-line -1) t)
-		      (not (looking-at paragraph-start))
-		      (looking-at message-cite-prefix-regexp)
-		      (equal quoted (match-string 0)))
-	    (setq beg (point))
-	    (goto-char (match-end 0))
-	    (looking-at "[ \t]*")
-	    (if (> (length leading-space) (length (match-string 0)))
-		(setq leading-space (match-string 0)))))
+    (progn
+      (forward-line 1)
       (while (and (not (eobp))
-		  (not (looking-at paragraph-separate))
-		  (not (looking-at message-cite-prefix-regexp)))
-	(forward-line 1))
+              (not (looking-at paragraph-separate))
+              (looking-at message-cite-prefix-regexp)
+              (equal quoted (match-string 0)))
+        (goto-char (match-end 0))
+        (looking-at "[ \t]*")
+        (if (> (length leading-space) (length (match-string 0)))
+        (setq leading-space (match-string 0)))
+        (forward-line 1))
       (setq end (point))
       (goto-char beg)
       (while (and (if (bobp) nil (forward-line -1) t)
-		  (not (looking-at paragraph-start))
-		  (not (looking-at message-cite-prefix-regexp)))
-	(setq beg (point))))
+              (not (looking-at paragraph-start))
+              (looking-at message-cite-prefix-regexp)
+              (equal quoted (match-string 0)))
+        (setq beg (point))
+        (goto-char (match-end 0))
+        (looking-at "[ \t]*")
+        (if (> (length leading-space) (length (match-string 0)))
+        (setq leading-space (match-string 0)))))
+      (while (and (not (eobp))
+          (not (looking-at paragraph-separate))
+          (not (looking-at message-cite-prefix-regexp)))
+    (forward-line 1))
+      (setq end (point))
+      (goto-char beg)
+      (while (and (if (bobp) nil (forward-line -1) t)
+          (not (looking-at paragraph-start))
+          (not (looking-at message-cite-prefix-regexp)))
+    (setq beg (point))))
     (goto-char point)
     (save-restriction
       (narrow-to-region beg end)
       (if not-break
-	  (setq point nil)
-	(if bolp
-	    (newline)
-	  (newline)
-	  (newline))
-	(setq point (point))
-	;; (newline 2) doesn't mark both newline's as hard, so call
-	;; newline twice. -jas
-	(newline)
-	(newline)
-	(delete-region (point) (re-search-forward "[ \t]*"))
-	(when (and quoted (not bolp))
-	  (insert quoted leading-space)))
+      (setq point nil)
+    (if bolp
+        (newline)
+      (newline)
+      (newline))
+    (setq point (point))
+    ;; (newline 2) doesn't mark both newline's as hard, so call
+    ;; newline twice. -jas
+    (newline)
+    (newline)
+    (delete-region (point) (re-search-forward "[ \t]*"))
+    (when (and quoted (not bolp))
+      (insert quoted leading-space)))
       (undo-boundary)
       (if quoted
-	  (let* ((adaptive-fill-regexp
-		  (regexp-quote (concat quoted leading-space)))
-		 (adaptive-fill-first-line-regexp
-		  adaptive-fill-regexp ))
-	    (fill-paragraph arg))
-	(fill-paragraph arg))
+      (let* ((adaptive-fill-regexp
+          (regexp-quote (concat quoted leading-space)))
+         (adaptive-fill-first-line-regexp
+          adaptive-fill-regexp ))
+        (fill-paragraph arg))
+    (fill-paragraph arg))
       (if point (goto-char point)))))
 
 (defun message-fill-paragraph (&optional arg)
@@ -3470,47 +3470,47 @@ Message buffers and is not meant to be called directly."
   "Insert a signature.  See documentation for variable `message-signature'."
   (interactive (list 0))
   (let* ((signature
-	  (cond
-	   ((and (null message-signature)
-		 (eq force 0))
-	    (save-excursion
-	      (goto-char (point-max))
-	      (not (re-search-backward message-signature-separator nil t))))
-	   ((and (null message-signature)
-		 force)
-	    t)
-	   ((functionp message-signature)
-	    (funcall message-signature))
-	   ((listp message-signature)
-	    (eval message-signature))
-	   (t message-signature)))
-	 signature-file)
+      (cond
+       ((and (null message-signature)
+         (eq force 0))
+        (save-excursion
+          (goto-char (point-max))
+          (not (re-search-backward message-signature-separator nil t))))
+       ((and (null message-signature)
+         force)
+        t)
+       ((functionp message-signature)
+        (funcall message-signature))
+       ((listp message-signature)
+        (eval message-signature))
+       (t message-signature)))
+     signature-file)
     (setq signature
-	  (cond ((stringp signature)
-		 signature)
-		((and (eq t signature) message-signature-file)
-		 (setq signature-file
-		       (if (and message-signature-directory
-				;; don't actually use the signature directory
-				;; if message-signature-file contains a path.
-				(not (file-name-directory
-				      message-signature-file)))
-			   (expand-file-name message-signature-file
-					     message-signature-directory)
-			 message-signature-file))
-		 (file-exists-p signature-file))))
+      (cond ((stringp signature)
+         signature)
+        ((and (eq t signature) message-signature-file)
+         (setq signature-file
+               (if (and message-signature-directory
+                ;; don't actually use the signature directory
+                ;; if message-signature-file contains a path.
+                (not (file-name-directory
+                      message-signature-file)))
+               (expand-file-name message-signature-file
+                         message-signature-directory)
+             message-signature-file))
+         (file-exists-p signature-file))))
     (when signature
       (goto-char (point-max))
       ;; Insert the signature.
       (unless (bolp)
-	(newline))
+    (newline))
       (when message-signature-insert-empty-line
-	(newline))
+    (newline))
       (insert "-- ")
       (newline)
       (if (eq signature t)
-	  (insert-file-contents signature-file)
-	(insert signature))
+      (insert-file-contents signature-file)
+    (insert signature))
       (goto-char (point-max))
       (or (bolp) (newline)))))
 
@@ -3541,17 +3541,17 @@ and `low'."
   (interactive)
   (save-excursion
     (let ((new "high")
-	  cur)
+      cur)
       (save-restriction
-	(message-narrow-to-headers)
-	(when (setq cur (message-fetch-field "Importance"))
-	  (message-remove-header "Importance")
-	  (setq new (cond ((string= cur "high")
-			   "low")
-			  ((string= cur "low")
-			   "normal")
-			  (t
-			   "high")))))
+    (message-narrow-to-headers)
+    (when (setq cur (message-fetch-field "Importance"))
+      (message-remove-header "Importance")
+      (setq new (cond ((string= cur "high")
+               "low")
+              ((string= cur "low")
+               "normal")
+              (t
+               "high")))))
       (message-goto-eoh)
       (insert (format "Importance: %s\n" new)))))
 
@@ -3565,9 +3565,9 @@ Note that this should not be used in newsgroups."
       (message-remove-header "Disposition-Notification-To"))
     (message-goto-eoh)
     (insert (format "Disposition-Notification-To: %s\n"
-		    (or (message-field-value "Reply-To")
-			(message-field-value "From")
-			(message-make-from))))))
+            (or (message-field-value "Reply-To")
+            (message-field-value "From")
+            (message-make-from))))))
 
 (defun message-elide-region (b e)
   "Elide the text in the region.
@@ -3593,19 +3593,19 @@ text was killed."
       (prefix-numeric-value current-prefix-arg))))
 
   (setq n (if (numberp n) (mod n 26) 13)) ;canonize N
-  (unless (or (zerop n)		        ; no action needed for a rot of 0
-	      (= b e))			; no region to rotate
+  (unless (or (zerop n)             ; no action needed for a rot of 0
+          (= b e))			; no region to rotate
     ;; We build the table, if necessary.
     (when (or (not message-caesar-translation-table)
-	      (/= (aref message-caesar-translation-table ?a) (+ ?a n)))
+          (/= (aref message-caesar-translation-table ?a) (+ ?a n)))
       (setq message-caesar-translation-table
-	    (message-make-caesar-translation-table n)))
+        (message-make-caesar-translation-table n)))
     (translate-region b e message-caesar-translation-table)))
 
 (defun message-make-caesar-translation-table (n)
   "Create a rot table with offset N."
   (let ((i -1)
-	(table (make-string 256 0)))
+    (table (make-string 256 0)))
     (while (< (cl-incf i) 256)
       (aset table i i))
     (concat
@@ -3623,12 +3623,12 @@ Used to encode/decode possibly offensive messages (commonly in rec.humor).
 With prefix arg, specifies the number of places to rotate each letter forward.
 Mail and USENET news headers are not rotated unless WIDE is non-nil."
   (interactive (if current-prefix-arg
-		   (list (prefix-numeric-value current-prefix-arg))
-		 (list nil)))
+           (list (prefix-numeric-value current-prefix-arg))
+         (list nil)))
   (save-excursion
     (save-restriction
       (when (and (not wide) (message-goto-body))
-	(narrow-to-region (point) (point-max)))
+    (narrow-to-region (point) (point-max)))
       (message-caesar-region (point-min) (point-max) rotnum))))
 
 (defun message-pipe-buffer-body (program)
@@ -3636,7 +3636,7 @@ Mail and USENET news headers are not rotated unless WIDE is non-nil."
   (save-excursion
     (save-restriction
       (when (message-goto-body)
-	(narrow-to-region (point) (point-max)))
+    (narrow-to-region (point) (point-max)))
       (shell-command-on-region
        (point-min) (point-max) program nil t))))
 
@@ -3649,20 +3649,20 @@ name, rather than giving an automatic name."
     (save-restriction
       (goto-char (point-min))
       (narrow-to-region (point)
-			(search-forward mail-header-separator nil 'end))
+            (search-forward mail-header-separator nil 'end))
       (let* ((mail-to (or
-		       (if (message-news-p) (message-fetch-field "Newsgroups")
-			 (message-fetch-field "To"))
-		       ""))
-	     (mail-trimmed-to
-	      (if (string-match "," mail-to)
-		  (concat (substring mail-to 0 (match-beginning 0)) ", ...")
-		mail-to))
-	     (name-default (concat "*message* " mail-trimmed-to))
-	     (name (if enter-string
-		       (read-string "New buffer name: " name-default)
-		     name-default)))
-	(rename-buffer name t)))))
+               (if (message-news-p) (message-fetch-field "Newsgroups")
+             (message-fetch-field "To"))
+               ""))
+         (mail-trimmed-to
+          (if (string-match "," mail-to)
+          (concat (substring mail-to 0 (match-beginning 0)) ", ...")
+        mail-to))
+         (name-default (concat "*message* " mail-trimmed-to))
+         (name (if enter-string
+               (read-string "New buffer name: " name-default)
+             name-default)))
+    (rename-buffer name t)))))
 
 (defun message-fill-yanked-message (&optional justifyp)
   "Fill the paragraphs of a message yanked into this one.
@@ -3686,30 +3686,30 @@ However, if `message-yank-prefix' is non-nil, insert that prefix on each line."
     ;; Remove unwanted headers.
     (when message-ignored-cited-headers
       (let (all-removed)
-	(save-restriction
-	  (narrow-to-region
-	   (goto-char start)
-	   (if (search-forward "\n\n" nil t)
-	       (1- (point))
-	     (point)))
-	  (message-remove-header message-ignored-cited-headers t)
-	  (when (= (point-min) (point-max))
-	    (setq all-removed t))
-	  (goto-char (point-max)))
-	(if all-removed
-	    (goto-char start)
-	  (forward-line 1))))
+    (save-restriction
+      (narrow-to-region
+       (goto-char start)
+       (if (search-forward "\n\n" nil t)
+           (1- (point))
+         (point)))
+      (message-remove-header message-ignored-cited-headers t)
+      (when (= (point-min) (point-max))
+        (setq all-removed t))
+      (goto-char (point-max)))
+    (if all-removed
+        (goto-char start)
+      (forward-line 1))))
     ;; Delete blank lines at the start of the buffer.
     (while (and (point-min)
-		(eolp)
-		(not (eobp)))
+        (eolp)
+        (not (eobp)))
       (message-delete-line))
     ;; Delete blank lines at the end of the buffer.
     (goto-char (point-max))
     (unless (eq (preceding-char) ?\n)
       (insert "\n"))
     (while (and (zerop (forward-line -1))
-		(looking-at "$"))
+        (looking-at "$"))
       (message-delete-line)))
   ;; Do the indentation.
   (if (null message-yank-prefix)
@@ -3717,13 +3717,13 @@ However, if `message-yank-prefix' is non-nil, insert that prefix on each line."
     (save-excursion
       (goto-char start)
       (while (< (point) (or end (mark t)))
-	(cond ((looking-at ">")
-	       (insert message-yank-cited-prefix))
-	      ((looking-at "^$")
-	       (insert message-yank-empty-prefix))
-	      (t
-	       (insert message-yank-prefix)))
-	(forward-line 1))))
+    (cond ((looking-at ">")
+           (insert message-yank-cited-prefix))
+          ((looking-at "^$")
+           (insert message-yank-empty-prefix))
+          (t
+           (insert message-yank-prefix)))
+    (forward-line 1))))
   (goto-char start))
 
 (defun message-remove-blank-cited-lines (&optional remove)
@@ -3734,57 +3734,57 @@ To use this automatically, you may add this function to
 `gnus-message-setup-hook'."
   (interactive "P")
   (let ((citexp (concat "^\\("
-			(concat message-yank-cited-prefix "\\|")
-			message-yank-prefix
-			"\\)+ *\n")))
+            (concat message-yank-cited-prefix "\\|")
+            message-yank-prefix
+            "\\)+ *\n")))
     (message "Removing `%s'" citexp)
     (save-excursion
       (message-goto-body)
       (while (re-search-forward citexp nil t)
-	(replace-match (if remove "" "\n"))))))
+    (replace-match (if remove "" "\n"))))))
 
 (defun message--yank-original-internal (arg)
   (let ((modified (buffer-modified-p))
-	body-text)
-	(when (and message-reply-buffer
-		   message-cite-function)
-	  (when (equal message-cite-reply-position 'above)
-	    (save-excursion
-	      (setq body-text
-		    (buffer-substring (message-goto-body)
-				      (point-max)))
-	      (delete-region (message-goto-body) (point-max))))
-	  (if (bufferp message-reply-buffer)
-	      (delete-windows-on message-reply-buffer t))
-	  (push-mark (save-excursion
-		       (cond
-			((bufferp message-reply-buffer)
-			 (insert-buffer-substring message-reply-buffer))
-			((and (consp message-reply-buffer)
-			      (functionp (car message-reply-buffer)))
-			 (apply (car message-reply-buffer)
-				(cdr message-reply-buffer))))
-		       (unless (bolp)
-			 (insert ?\n))
-		       (point)))
-	  (unless arg
-	    (funcall message-cite-function)
-	    (unless (eq (char-before (mark t)) ?\n)
-	      (let ((pt (point)))
-		(goto-char (mark t))
-		(insert-before-markers ?\n)
-		(goto-char pt))))
-	  (pcase message-cite-reply-position
-	    ('above
-	     (message-goto-body)
-	     (insert body-text)
-	     (insert (if (bolp) "\n" "\n\n"))
-	     (message-goto-body))
-	    ('below
-	     (message-goto-signature)))
-	  ;; Add a `message-setup-very-last-hook' here?
-	  ;; Add `gnus-article-highlight-citation' here?
-	  (unless modified
+    body-text)
+    (when (and message-reply-buffer
+           message-cite-function)
+      (when (equal message-cite-reply-position 'above)
+        (save-excursion
+          (setq body-text
+            (buffer-substring (message-goto-body)
+                      (point-max)))
+          (delete-region (message-goto-body) (point-max))))
+      (if (bufferp message-reply-buffer)
+          (delete-windows-on message-reply-buffer t))
+      (push-mark (save-excursion
+               (cond
+            ((bufferp message-reply-buffer)
+             (insert-buffer-substring message-reply-buffer))
+            ((and (consp message-reply-buffer)
+                  (functionp (car message-reply-buffer)))
+             (apply (car message-reply-buffer)
+                (cdr message-reply-buffer))))
+               (unless (bolp)
+             (insert ?\n))
+               (point)))
+      (unless arg
+        (funcall message-cite-function)
+        (unless (eq (char-before (mark t)) ?\n)
+          (let ((pt (point)))
+        (goto-char (mark t))
+        (insert-before-markers ?\n)
+        (goto-char pt))))
+      (pcase message-cite-reply-position
+        ('above
+         (message-goto-body)
+         (insert body-text)
+         (insert (if (bolp) "\n" "\n\n"))
+         (message-goto-body))
+        ('below
+         (message-goto-signature)))
+      ;; Add a `message-setup-very-last-hook' here?
+      ;; Add `gnus-article-highlight-citation' here?
+      (unless modified
         (setq message-checksum (message-checksum))))))
 
 (defun message-yank-original (&optional arg)
@@ -3801,8 +3801,8 @@ prefix, and don't delete any headers."
   ;; eval the let forms contained in message-cite-style
   (eval
    `(let ,(if (symbolp message-cite-style)
-	      (symbol-value message-cite-style)
-	    message-cite-style)
+          (symbol-value message-cite-style)
+        message-cite-style)
       (message--yank-original-internal ',arg))))
 
 (defun message-yank-buffer (buffer)
@@ -3817,10 +3817,10 @@ prefix, and don't delete any headers."
   (let (buffers)
     (save-current-buffer
       (dolist (buffer (buffer-list t))
-	(set-buffer buffer)
-	(when (and (derived-mode-p 'message-mode)
-		   (null message-sent-message-via))
-	  (push (buffer-name buffer) buffers))))
+    (set-buffer buffer)
+    (when (and (derived-mode-p 'message-mode)
+           (null message-sent-message-via))
+      (push (buffer-name buffer) buffers))))
     (nreverse buffers)))
 
 (defun message-cite-original-1 (strip-signature)
@@ -3830,60 +3830,60 @@ original message.
 
 This function uses `mail-citation-hook' if that is non-nil."
   (if (and (boundp 'mail-citation-hook)
-	   mail-citation-hook)
+       mail-citation-hook)
       (run-hooks 'mail-citation-hook)
     (let* ((start (point))
-	   (end (mark t))
-	   (x-no-archive nil)
-	   (functions
-	    (when message-indent-citation-function
-	      (if (listp message-indent-citation-function)
-		  message-indent-citation-function
-		(list message-indent-citation-function))))
-	   ;; This function may be called by `gnus-summary-yank-message' and
-	   ;; may insert a different article from the original.  So, we will
-	   ;; modify the value of `message-reply-headers' with that article.
-	   (message-reply-headers
-	    (save-restriction
-	      (narrow-to-region start end)
-	      (message-narrow-to-head-1)
-	      (setq x-no-archive (message-fetch-field "x-no-archive"))
-	      (vector 0
-		      (or (message-fetch-field "subject") "none")
-		      (or (message-fetch-field "from") "nobody")
-		      (message-fetch-field "date")
-		      (message-fetch-field "message-id" t)
-		      (message-fetch-field "references")
-		      0 0 ""))))
+       (end (mark t))
+       (x-no-archive nil)
+       (functions
+        (when message-indent-citation-function
+          (if (listp message-indent-citation-function)
+          message-indent-citation-function
+        (list message-indent-citation-function))))
+       ;; This function may be called by `gnus-summary-yank-message' and
+       ;; may insert a different article from the original.  So, we will
+       ;; modify the value of `message-reply-headers' with that article.
+       (message-reply-headers
+        (save-restriction
+          (narrow-to-region start end)
+          (message-narrow-to-head-1)
+          (setq x-no-archive (message-fetch-field "x-no-archive"))
+          (vector 0
+              (or (message-fetch-field "subject") "none")
+              (or (message-fetch-field "from") "nobody")
+              (message-fetch-field "date")
+              (message-fetch-field "message-id" t)
+              (message-fetch-field "references")
+              0 0 ""))))
       (mml-quote-region start end)
       (when strip-signature
-	;; Allow undoing.
-	(undo-boundary)
-	(goto-char end)
-	(when (re-search-backward message-signature-separator start t)
-	  ;; Also peel off any blank lines before the signature.
-	  (forward-line -1)
-	  (while (looking-at "^[ \t]*$")
-	    (forward-line -1))
-	  (forward-line 1)
-	  (delete-region (point) end)
-	  (unless (search-backward "\n\n" start t)
-	    ;; Insert a blank line if it is peeled off.
-	    (insert "\n"))))
+    ;; Allow undoing.
+    (undo-boundary)
+    (goto-char end)
+    (when (re-search-backward message-signature-separator start t)
+      ;; Also peel off any blank lines before the signature.
+      (forward-line -1)
+      (while (looking-at "^[ \t]*$")
+        (forward-line -1))
+      (forward-line 1)
+      (delete-region (point) end)
+      (unless (search-backward "\n\n" start t)
+        ;; Insert a blank line if it is peeled off.
+        (insert "\n"))))
       (goto-char start)
       (mapc 'funcall functions)
       (when message-citation-line-function
-	(unless (bolp)
-	  (insert "\n"))
-	(funcall message-citation-line-function))
+    (unless (bolp)
+      (insert "\n"))
+    (funcall message-citation-line-function))
       (when (and x-no-archive
-		 (not message-cite-articles-with-x-no-archive)
-		 (string-match "yes" x-no-archive))
-	(undo-boundary)
-	(delete-region (point) (mark t))
-	(insert "> [Quoted text removed due to X-No-Archive]\n")
-	(push-mark)
-	(forward-line -1)))))
+         (not message-cite-articles-with-x-no-archive)
+         (string-match "yes" x-no-archive))
+    (undo-boundary)
+    (delete-region (point) (mark t))
+    (insert "> [Quoted text removed due to X-No-Archive]\n")
+    (push-mark)
+    (forward-line -1)))))
 
 (defun message-cite-original ()
   "Cite function in the standard Message manner."
@@ -3915,89 +3915,89 @@ See `message-citation-line-format'."
     (unless from
       (setq from (mail-header-from message-reply-headers)))
     (let* ((data (condition-case ()
-		     (funcall (if (boundp 'gnus-extract-address-components)
-				  gnus-extract-address-components
-				'mail-extract-address-components)
-			      from)
-		   (error nil)))
-	   (name (car data))
-	   (fname name)
-	   (lname name)
-	   (net (car (cdr data)))
-	   (name-or-net (or (car data)
-			    (car (cdr data)) from))
-	   (time
-	    (when (string-match "%[^fnNFL]" message-citation-line-format)
-	      (cond ((numberp (car-safe date)) date) ;; backward compatibility
-		    (date (gnus-date-get-time date))
-		    (t
-		     (gnus-date-get-time
-		      (setq date (mail-header-date message-reply-headers)))))))
-	   (tz (or tz
-		   (when (stringp date)
-		     (nth 8 (parse-time-string date)))))
-	   (flist
-	    (let ((i ?A) lst)
-	      (when (stringp name)
-		;; Guess first name and last name:
-		(let* ((names (delq
-			       nil
-			       (mapcar
-				(lambda (x)
-				  (if (string-match "\\`\\(\\w\\|[-.]\\)+\\'"
-						    x)
-				      x
-				    nil))
-				(split-string name "[ \t]+"))))
-		       (count (length names)))
-		  (cond ((= count 1)
-			 (setq fname (car names)
-			       lname ""))
-			((or (= count 2) (= count 3))
-			 (setq fname (car names)
-			       lname (mapconcat 'identity (cdr names) " ")))
-			((> count 3)
-			 (setq fname (mapconcat 'identity
-						(butlast names (- count 2))
-						" ")
-			       lname (mapconcat 'identity
-						(nthcdr 2 names)
-						" "))))
+             (funcall (if (boundp 'gnus-extract-address-components)
+                  gnus-extract-address-components
+                'mail-extract-address-components)
+                  from)
+           (error nil)))
+       (name (car data))
+       (fname name)
+       (lname name)
+       (net (car (cdr data)))
+       (name-or-net (or (car data)
+                (car (cdr data)) from))
+       (time
+        (when (string-match "%[^fnNFL]" message-citation-line-format)
+          (cond ((numberp (car-safe date)) date) ;; backward compatibility
+            (date (gnus-date-get-time date))
+            (t
+             (gnus-date-get-time
+              (setq date (mail-header-date message-reply-headers)))))))
+       (tz (or tz
+           (when (stringp date)
+             (nth 8 (parse-time-string date)))))
+       (flist
+        (let ((i ?A) lst)
+          (when (stringp name)
+        ;; Guess first name and last name:
+        (let* ((names (delq
+                   nil
+                   (mapcar
+                (lambda (x)
+                  (if (string-match "\\`\\(\\w\\|[-.]\\)+\\'"
+                            x)
+                      x
+                    nil))
+                (split-string name "[ \t]+"))))
+               (count (length names)))
+          (cond ((= count 1)
+             (setq fname (car names)
+                   lname ""))
+            ((or (= count 2) (= count 3))
+             (setq fname (car names)
+                   lname (mapconcat 'identity (cdr names) " ")))
+            ((> count 3)
+             (setq fname (mapconcat 'identity
+                        (butlast names (- count 2))
+                        " ")
+                   lname (mapconcat 'identity
+                        (nthcdr 2 names)
+                        " "))))
                   (when (string-match "\\(.*\\),\\'" fname)
                     (let ((newlname (match-string 1 fname)))
                       (setq fname lname lname newlname)))))
-	      ;; The following letters are not used in `format-time-string':
-	      (push ?E lst) (push "<E>" lst)
-	      (push ?F lst) (push (or fname name-or-net) lst)
-	      ;; We might want to use "" instead of "<X>" later.
-	      (push ?J lst) (push "<J>" lst)
-	      (push ?K lst) (push "<K>" lst)
-	      (push ?L lst) (push lname lst)
-	      (push ?N lst) (push name-or-net lst)
-	      (push ?O lst) (push "<O>" lst)
-	      (push ?P lst) (push "<P>" lst)
-	      (push ?Q lst) (push "<Q>" lst)
-	      (push ?f lst) (push from lst)
-	      (push ?i lst) (push "<i>" lst)
-	      (push ?n lst) (push net lst)
-	      (push ?o lst) (push "<o>" lst)
-	      (push ?q lst) (push "<q>" lst)
-	      (push ?t lst) (push "<t>" lst)
-	      (push ?v lst) (push "<v>" lst)
-	      ;; Delegate the rest to `format-time-string':
-	      (while (<= i ?z)
-		(when (and (not (memq i lst))
-			   ;; Skip (Z,a)
-			   (or (<= i ?Z)
-			       (>= i ?a)))
-		  (push i lst)
-		  (push (condition-case nil
-			    (format-time-string (format "%%%c" i) time tz)
-			  (error (format ">%c<" i)))
-			lst))
-		(setq i (1+ i)))
-	      (reverse lst)))
-	   (spec (apply 'format-spec-make flist)))
+          ;; The following letters are not used in `format-time-string':
+          (push ?E lst) (push "<E>" lst)
+          (push ?F lst) (push (or fname name-or-net) lst)
+          ;; We might want to use "" instead of "<X>" later.
+          (push ?J lst) (push "<J>" lst)
+          (push ?K lst) (push "<K>" lst)
+          (push ?L lst) (push lname lst)
+          (push ?N lst) (push name-or-net lst)
+          (push ?O lst) (push "<O>" lst)
+          (push ?P lst) (push "<P>" lst)
+          (push ?Q lst) (push "<Q>" lst)
+          (push ?f lst) (push from lst)
+          (push ?i lst) (push "<i>" lst)
+          (push ?n lst) (push net lst)
+          (push ?o lst) (push "<o>" lst)
+          (push ?q lst) (push "<q>" lst)
+          (push ?t lst) (push "<t>" lst)
+          (push ?v lst) (push "<v>" lst)
+          ;; Delegate the rest to `format-time-string':
+          (while (<= i ?z)
+        (when (and (not (memq i lst))
+               ;; Skip (Z,a)
+               (or (<= i ?Z)
+                   (>= i ?a)))
+          (push i lst)
+          (push (condition-case nil
+                (format-time-string (format "%%%c" i) time tz)
+              (error (format ">%c<" i)))
+            lst))
+        (setq i (1+ i)))
+          (reverse lst)))
+       (spec (apply 'format-spec-make flist)))
       (insert (format-spec message-citation-line-format spec)))
     (newline)))
 
@@ -4019,27 +4019,27 @@ This function strips off the signature from the original message."
       (narrow-to-region
        (goto-char (point-min))
        (progn
-	 (re-search-forward
-	  (concat "^" (regexp-quote mail-header-separator) "$"))
-	 (match-beginning 0)))
+     (re-search-forward
+      (concat "^" (regexp-quote mail-header-separator) "$"))
+     (match-beginning 0)))
       (goto-char (point-min))
       (if (re-search-forward (concat "^" (regexp-quote header) ":") nil t)
-	  (progn
-	    (re-search-forward "^[^ \t]" nil 'move)
-	    (beginning-of-line)
-	    (skip-chars-backward "\n")
-	    t)
-	(while (and afters
-		    (not (re-search-forward
-			  (concat "^" (regexp-quote (car afters)) ":")
-			  nil t)))
-	  (pop afters))
-	(when afters
-	  (re-search-forward "^[^ \t]" nil 'move)
-	  (beginning-of-line))
-	(insert header ": \n")
-	(forward-char -1)
-	nil))))
+      (progn
+        (re-search-forward "^[^ \t]" nil 'move)
+        (beginning-of-line)
+        (skip-chars-backward "\n")
+        t)
+    (while (and afters
+            (not (re-search-forward
+              (concat "^" (regexp-quote (car afters)) ":")
+              nil t)))
+      (pop afters))
+    (when afters
+      (re-search-forward "^[^ \t]" nil 'move)
+      (beginning-of-line))
+    (insert header ": \n")
+    (forward-char -1)
+    nil))))
 
 
 
@@ -4053,12 +4053,12 @@ The usage of ARG is defined by the instance that called Message.
 It should typically alter the sending method in some way or other."
   (interactive "P")
   (let ((buf (current-buffer))
-	(actions message-exit-actions))
+    (actions message-exit-actions))
     (when (and (message-send arg)
-	       (buffer-name buf))
+           (buffer-name buf))
       (message-bury buf)
       (if message-kill-buffer-on-exit
-	  (kill-buffer buf))
+      (kill-buffer buf))
       (message-do-actions actions)
       t)))
 
@@ -4076,32 +4076,32 @@ Instead, just auto-save the buffer and then bury it."
   "Kill the current buffer."
   (interactive)
   (when (or (not (buffer-modified-p))
-	    (not message-kill-buffer-query)
-	    (yes-or-no-p "Message modified; kill anyway? "))
+        (not message-kill-buffer-query)
+        (yes-or-no-p "Message modified; kill anyway? "))
     (let ((actions message-kill-actions)
-	  (draft-article message-draft-article)
-	  (auto-save-file-name buffer-auto-save-file-name)
-	  (file-name buffer-file-name)
-	  (modified (buffer-modified-p)))
+      (draft-article message-draft-article)
+      (auto-save-file-name buffer-auto-save-file-name)
+      (file-name buffer-file-name)
+      (modified (buffer-modified-p)))
       (setq buffer-file-name nil)
       (kill-buffer (current-buffer))
-      (when (and (or (and auto-save-file-name
-			  (file-exists-p auto-save-file-name))
-		     (and file-name
-			  (file-exists-p file-name)))
-		 (progn
-		   ;; If the message buffer has lived in a dedicated window,
-		   ;; `kill-buffer' has killed the frame.  Thus the
-		   ;; `yes-or-no-p' may show up in a lowered frame.  Make sure
-		   ;; that the user can see the question by raising the
-		   ;; current frame:
-		   (raise-frame)
-		   (yes-or-no-p (format "Remove the backup file%s? "
-					(if modified " too" "")))))
-	(ignore-errors
-	  (delete-file auto-save-file-name))
-	(let ((message-draft-article draft-article))
-	  (message-disassociate-draft)))
+      (when (and (and auto-save-file-name
+                 (file-exists-p auto-save-file-name))
+            (and file-name
+                 (file-exists-p file-name))
+            (progn
+              ;; If the message buffer has lived in a dedicated window,
+              ;; `kill-buffer' has killed the frame.  Thus the
+              ;; `yes-or-no-p' may show up in a lowered frame.  Make sure
+              ;; that the user can see the question by raising the
+              ;; current frame:
+              (raise-frame)
+              (yes-or-no-p (format "Remove the backup file%s? "
+                      (if modified " too" "")))))
+    (ignore-errors
+      (delete-file auto-save-file-name))
+    (let ((message-draft-article draft-article))
+      (message-disassociate-draft)))
       (message-do-actions actions))))
 
 (defun message-bury (buffer)
@@ -4133,52 +4133,52 @@ It should typically alter the sending method in some way or other."
   (mml-secure-bcc-is-safe)
   (when message-confirm-send
     (or (y-or-n-p "Send message? ")
-	(keyboard-quit)))
+    (keyboard-quit)))
   (message message-sending-message)
   (let ((alist message-send-method-alist)
-	(success t)
-	elem sent dont-barf-on-no-method
-	(message-options message-options))
+    (success t)
+    elem sent dont-barf-on-no-method
+    (message-options message-options))
     (message-options-set-recipient)
     (while (and success
-		(setq elem (pop alist)))
+        (setq elem (pop alist)))
       (when (funcall (cadr elem))
-	(when (and (or (not (memq (car elem)
-				  message-sent-message-via))
-		       (message-fetch-field "supersedes")
-		       (if (or (message-gnksa-enable-p 'multiple-copies)
-			       (not (eq (car elem) 'news)))
-			   (y-or-n-p
-			    (format
-			     "Already sent message via %s; resend? "
-			     (car elem)))
-			 (error "Denied posting -- multiple copies")))
-		   (setq success (funcall (caddr elem) arg)))
-	  (setq sent t))))
+    (when (and (or (not (memq (car elem)
+                  message-sent-message-via))
+               (message-fetch-field "supersedes")
+               (if (or (message-gnksa-enable-p 'multiple-copies)
+                   (not (eq (car elem) 'news)))
+               (y-or-n-p
+                (format
+                 "Already sent message via %s; resend? "
+                 (car elem)))
+             (error "Denied posting -- multiple copies")))
+           (setq success (funcall (caddr elem) arg)))
+      (setq sent t))))
     (unless (or sent
-		(not success)
-		(let ((fcc (message-fetch-field "Fcc"))
-		      (gcc (message-fetch-field "Gcc")))
-		  (when (or fcc gcc)
-		    (or (eq message-allow-no-recipients 'always)
-			(and (not (eq message-allow-no-recipients 'never))
-			     (setq dont-barf-on-no-method
-				   (y-or-n-p
-				    (format "No receiver, perform %s anyway? "
-					    (cond ((and fcc gcc) "Fcc and Gcc")
-						  (fcc "Fcc")
-						  (t "Gcc"))))))))))
+        (not success)
+        (let ((fcc (message-fetch-field "Fcc"))
+              (gcc (message-fetch-field "Gcc")))
+          (when (or fcc gcc)
+            (or (eq message-allow-no-recipients 'always)
+            (and (not (eq message-allow-no-recipients 'never))
+                 (setq dont-barf-on-no-method
+                   (y-or-n-p
+                    (format "No receiver, perform %s anyway? "
+                        (cond ((and fcc gcc) "Fcc and Gcc")
+                          (fcc "Fcc")
+                          (t "Gcc"))))))))))
       (error "No methods specified to send by"))
     (when (or dont-barf-on-no-method
-	      (and success sent))
+          (and success sent))
       (message-do-fcc)
       (save-excursion
-	(run-hooks 'message-sent-hook))
+    (run-hooks 'message-sent-hook))
       (message "Sending...done")
       ;; Do ecomplete address snarfing.
       (when (and (message-mail-alias-type-p 'ecomplete)
-		 (not message-inhibit-ecomplete))
-	(message-put-addresses-in-ecomplete))
+         (not message-inhibit-ecomplete))
+    (message-put-addresses-in-ecomplete))
       ;; Mark the buffer as unmodified and delete auto-save.
       (set-buffer-modified-p nil)
       (delete-auto-save-file-if-necessary t)
@@ -4201,7 +4201,7 @@ It should typically alter the sending method in some way or other."
   "Eval FORMS if TYPE is to be checked."
   `(or (message-check-element ,type)
        (save-excursion
-	 ,@forms)))
+     ,@forms)))
 
 (put 'message-check 'lisp-indent-function 1)
 (put 'message-check 'edebug-form-spec '(form body))
@@ -4217,19 +4217,19 @@ not have PROP."
     (setq end (point-max)))
   (let (next regions)
     (if reverse
-	(while (and start
-		    (setq start (text-property-any start end prop nil)))
-	  (setq next (next-single-property-change start prop nil end))
-	  (push (cons start (or next end)) regions)
-	  (setq start next))
+    (while (and start
+            (setq start (text-property-any start end prop nil)))
+      (setq next (next-single-property-change start prop nil end))
+      (push (cons start (or next end)) regions)
+      (setq start next))
       (while (and start
-		  (or (get-text-property start prop)
-		      (and (setq start (next-single-property-change
-					start prop nil end))
-			   (get-text-property start prop))))
-	(setq next (text-property-any start end prop nil))
-	(push (cons start (or next end)) regions)
-	(setq start next)))
+          (or (get-text-property start prop)
+              (and (setq start (next-single-property-change
+                    start prop nil end))
+               (get-text-property start prop))))
+    (setq next (text-property-any start end prop nil))
+    (push (cons start (or next end)) regions)
+    (setq start next)))
     (nreverse regions)))
 
 (defcustom message-bogus-addresses
@@ -4243,19 +4243,19 @@ conformance."
   :version "26.1"			; @@ -> @.*@
   :group 'message-headers
   :type '(choice
-	  (const :tag "None" nil)
-	  (list
-	   (set :inline t
-		(const "noreply")
-		(const "nospam")
-		(const "invalid")
-		(const :tag "duplicate @" "@.*@")
-		(const :tag "non-ascii local part" "[^[:ascii:]].*@")
-		(const :tag "`_' in domain part" "@.*_")
-		(const :tag "whitespace" "[ \t]"))
-	   (repeat :inline t
-		   :tag "Other"
-		   (regexp)))))
+      (const :tag "None" nil)
+      (list
+       (set :inline t
+        (const "noreply")
+        (const "nospam")
+        (const "invalid")
+        (const :tag "duplicate @" "@.*@")
+        (const :tag "non-ascii local part" "[^[:ascii:]].*@")
+        (const :tag "`_' in domain part" "@.*_")
+        (const :tag "whitespace" "[ \t]"))
+       (repeat :inline t
+           :tag "Other"
+           (regexp)))))
 
 (defun message-fix-before-sending ()
   "Do various things to make the message nice before sending it."
@@ -4272,83 +4272,83 @@ conformance."
   ;; is clobbered by an after-change hook anyhow.
   (message-check 'invisible-text
     (let ((regions (message-text-with-property 'invisible))
-	  from to)
+      from to)
       (when regions
-	(while regions
-	  (setq from (caar regions)
-		to (cdar regions)
-		regions (cdr regions))
-	  (put-text-property from to 'invisible nil)
-	  (overlay-put (make-overlay from to) 'face 'highlight))
-	(unless (yes-or-no-p
-		 "Invisible text found and made visible; continue sending? ")
-	  (error "Invisible text found and made visible")))))
+    (while regions
+      (setq from (caar regions)
+        to (cdar regions)
+        regions (cdr regions))
+      (put-text-property from to 'invisible nil)
+      (overlay-put (make-overlay from to) 'face 'highlight))
+    (unless (yes-or-no-p
+         "Invisible text found and made visible; continue sending? ")
+      (error "Invisible text found and made visible")))))
   (message-check 'illegible-text
     (let (char found choice nul-chars)
       (message-goto-body)
       (setq nul-chars (save-excursion
-			(search-forward "\000" nil t)))
+            (search-forward "\000" nil t)))
       (while (progn
-	       (skip-chars-forward mm-7bit-chars)
-	       (when (get-text-property (point) 'no-illegible-text)
-		 ;; There is a signed or encrypted raw message part
-		 ;; that is considered to be safe.
-		 (goto-char (or (next-single-property-change
-				 (point) 'no-illegible-text)
-				(point-max))))
-	       (setq char (char-after)))
-	(when (or (< char 128)
-		  (and enable-multibyte-characters
-		       (memq (char-charset char)
-			     '(eight-bit-control eight-bit-graphic
-						 ;; Emacs 23, Bug#1770:
-						 eight-bit
-						 control-1))
-		       (not (get-text-property
-			     (point) 'untranslated-utf-8))))
-	  (overlay-put (make-overlay (point) (1+ (point))) 'face 'highlight)
-	  (setq found t))
-	(forward-char))
+           (skip-chars-forward mm-7bit-chars)
+           (when (get-text-property (point) 'no-illegible-text)
+         ;; There is a signed or encrypted raw message part
+         ;; that is considered to be safe.
+         (goto-char (or (next-single-property-change
+                 (point) 'no-illegible-text)
+                (point-max))))
+           (setq char (char-after)))
+    (when (or (< char 128)
+          (and enable-multibyte-characters
+               (memq (char-charset char)
+                 '(eight-bit-control eight-bit-graphic
+                         ;; Emacs 23, Bug#1770:
+                         eight-bit
+                         control-1))
+               (not (get-text-property
+                 (point) 'untranslated-utf-8))))
+      (overlay-put (make-overlay (point) (1+ (point))) 'face 'highlight)
+      (setq found t))
+    (forward-char))
       (when found
-	(setq choice
-	      (car
-	       (read-multiple-choice
-		(if nul-chars
-		    "NUL characters found, which may cause problems.  Continue sending?"
-		  "Non-printable characters found.  Continue sending?")
-		`((?d "delete" "Remove non-printable characters and send")
-		  (?r "replace"
-		      ,(format
-			"Replace non-printable characters with \"%s\" and send"
-			message-replacement-char))
-		  (?s "send" "Send as is without removing anything")
-		  (?e "edit" "Continue editing")))))
-	(if (eq choice ?e)
-	  (error "Non-printable characters"))
-	(message-goto-body)
-	(skip-chars-forward mm-7bit-chars)
-	(while (not (eobp))
-	  (when (let ((char (char-after)))
-		  (or (< char 128)
-		      (and enable-multibyte-characters
-			   ;; FIXME: Wrong for Emacs 23 (unicode) and for
-			   ;; things like undecodable utf-8 (in Emacs 21?).
-			   ;; Should at least use find-coding-systems-region.
-			   ;; -- fx
-			   (memq (char-charset char)
-				 '(eight-bit-control eight-bit-graphic
-						     ;; Emacs 23, Bug#1770:
-						     eight-bit
-						     control-1))
-			   (not (get-text-property
-				 (point) 'untranslated-utf-8)))))
-	    (if (eq choice ?i)
-		(message-kill-all-overlays)
-	      (delete-char 1)
-	      (when (eq choice ?r)
-		(insert message-replacement-char))))
-	  (forward-char)
-	  (skip-chars-forward mm-7bit-chars)))))
+    (setq choice
+          (car
+           (read-multiple-choice
+        (if nul-chars
+            "NUL characters found, which may cause problems.  Continue sending?"
+          "Non-printable characters found.  Continue sending?")
+        `((?d "delete" "Remove non-printable characters and send")
+          (?r "replace"
+              ,(format
+            "Replace non-printable characters with \"%s\" and send"
+            message-replacement-char))
+          (?s "send" "Send as is without removing anything")
+          (?e "edit" "Continue editing")))))
+    (if (eq choice ?e)
+      (error "Non-printable characters"))
+    (message-goto-body)
+    (skip-chars-forward mm-7bit-chars)
+    (while (not (eobp))
+      (when (let ((char (char-after)))
+          (or (< char 128)
+              (and enable-multibyte-characters
+               ;; FIXME: Wrong for Emacs 23 (unicode) and for
+               ;; things like undecodable utf-8 (in Emacs 21?).
+               ;; Should at least use find-coding-systems-region.
+               ;; -- fx
+               (memq (char-charset char)
+                 '(eight-bit-control eight-bit-graphic
+                             ;; Emacs 23, Bug#1770:
+                             eight-bit
+                             control-1))
+               (not (get-text-property
+                 (point) 'untranslated-utf-8)))))
+        (if (eq choice ?i)
+        (message-kill-all-overlays)
+          (delete-char 1)
+          (when (eq choice ?r)
+        (insert message-replacement-char))))
+      (forward-char)
+      (skip-chars-forward mm-7bit-chars)))))
   (message-check 'bogus-recipient
     ;; Warn before sending a mail to an invalid address.
     (message-check-recipients)))
@@ -4364,18 +4364,18 @@ An address might be bogus if there's a matching entry in
   ;; FIXME: How about "foo@subdomain", when the MTA adds ".domain.tld"?
   (let (found)
     (mapc (lambda (address)
-	    (setq address (or (cadr address) ""))
-	    (when (or (string= "" address)
-		      (and message-bogus-addresses
-			   (let ((re
-				  (if (listp message-bogus-addresses)
-				      (mapconcat 'identity
-						 message-bogus-addresses
-						 "\\|")
-				    message-bogus-addresses)))
-			     (string-match re address))))
+        (setq address (or (cadr address) ""))
+        (when (or (string= "" address)
+              (and message-bogus-addresses
+               (let ((re
+                  (if (listp message-bogus-addresses)
+                      (mapconcat 'identity
+                         message-bogus-addresses
+                         "\\|")
+                    message-bogus-addresses)))
+                 (string-match re address))))
               (push address found)))
-	  (mail-extract-address-components recipients t))
+      (mail-extract-address-components recipients t))
     found))
 
 (defun message-check-recipients ()
@@ -4387,23 +4387,23 @@ This function could be useful in `message-setup-hook'."
     (message-narrow-to-headers)
     (dolist (hdr '("To" "Cc" "Bcc"))
       (let ((addr (message-fetch-field hdr)))
-	(when (stringp addr)
-	  (dolist (bog (message-bogus-recipient-p addr))
-	    (and bog
-		 (not (y-or-n-p
-		       (format-message
-			"Address `%s'%s might be bogus.  Continue? "
-			bog
-			;; If the encoded version of the email address
-			;; is different from the unencoded version,
-			;; then we likely have invisible characters or
-			;; the like.  Display the encoded version,
-			;; too.
-			(let ((encoded (rfc2047-encode-string bog)))
-			  (if (string= encoded bog)
-			      ""
-			    (format " (%s)" encoded))))))
-		 (user-error "Bogus address"))))))))
+    (when (stringp addr)
+      (dolist (bog (message-bogus-recipient-p addr))
+        (and bog
+         (not (y-or-n-p
+               (format-message
+            "Address `%s'%s might be bogus.  Continue? "
+            bog
+            ;; If the encoded version of the email address
+            ;; is different from the unencoded version,
+            ;; then we likely have invisible characters or
+            ;; the like.  Display the encoded version,
+            ;; too.
+            (let ((encoded (rfc2047-encode-string bog)))
+              (if (string= encoded bog)
+                  ""
+                (format " (%s)" encoded))))))
+         (user-error "Bogus address"))))))))
 
 (custom-add-option 'message-setup-hook 'message-check-recipients)
 
@@ -4411,14 +4411,14 @@ This function could be useful in `message-setup-hook'."
   "Add ACTION to be performed when doing an exit of type TYPES."
   (while types
     (add-to-list (intern (format "message-%s-actions" (pop types)))
-		 action)))
+         action)))
 
 (defun message-delete-action (action &rest types)
   "Delete ACTION from lists of actions performed when doing an exit of type TYPES."
   (let (var)
     (while types
       (set (setq var (intern (format "message-%s-actions" (pop types))))
-	   (delq action (symbol-value var))))))
+       (delq action (symbol-value var))))))
 
 (defun message-do-actions (actions)
   "Perform all actions in ACTIONS."
@@ -4428,10 +4428,10 @@ This function could be useful in `message-setup-hook'."
       (cond
        ;; A simple function.
        ((functionp action)
-	(funcall action))
+    (funcall action))
        ;; Something to be evalled.
        (t
-	(eval action))))))
+    (eval action))))))
 
 (defun message-send-mail-partially ()
   "Send mail as message/partial."
@@ -4442,66 +4442,66 @@ This function could be useful in `message-setup-hook'."
   (replace-match "\n")
   (run-hooks 'message-send-mail-hook)
   (let ((p (goto-char (point-min)))
-	(tembuf (message-generate-new-buffer-clone-locals " message temp"))
-	(curbuf (current-buffer))
-	(id (message-make-message-id)) (n 1)
+    (tembuf (message-generate-new-buffer-clone-locals " message temp"))
+    (curbuf (current-buffer))
+    (id (message-make-message-id)) (n 1)
         plist total header)
     (while (not (eobp))
       (if (< (point-max) (+ p message-send-mail-partially-limit))
-	  (goto-char (point-max))
-	(goto-char (+ p message-send-mail-partially-limit))
-	(beginning-of-line)
-	(if (<= (point) p) (forward-line 1))) ;; In case of bad message.
+      (goto-char (point-max))
+    (goto-char (+ p message-send-mail-partially-limit))
+    (beginning-of-line)
+    (if (<= (point) p) (forward-line 1))) ;; In case of bad message.
       (push p plist)
       (setq p (point)))
     (setq total (length plist))
     (push (point-max) plist)
     (setq plist (nreverse plist))
     (unwind-protect
-	(save-excursion
-	  (setq p (pop plist))
-	  (while plist
-	    (set-buffer curbuf)
-	    (copy-to-buffer tembuf p (car plist))
-	    (set-buffer tembuf)
-	    (goto-char (point-min))
-	    (if header
-		(progn
-		  (goto-char (point-min))
-		  (narrow-to-region (point) (point))
-		  (insert header))
-	      (message-goto-eoh)
-	      (setq header (buffer-substring (point-min) (point)))
-	      (goto-char (point-min))
-	      (narrow-to-region (point) (point))
-	      (insert header)
-	      (message-remove-header "Mime-Version")
-	      (message-remove-header "Content-Type")
-	      (message-remove-header "Content-Transfer-Encoding")
-	      (message-remove-header "Message-ID")
-	      (message-remove-header "Lines")
-	      (goto-char (point-max))
-	      (insert "Mime-Version: 1.0\n")
-	      (setq header (buffer-string)))
-	    (goto-char (point-max))
-	    (insert (format "Content-Type: message/partial; id=\"%s\"; number=%d; total=%d\n\n"
-			    id n total))
-	    (forward-char -1)
-	    (let ((mail-header-separator ""))
-	      (when (memq 'Message-ID message-required-mail-headers)
-		(insert "Message-ID: " (message-make-message-id) "\n"))
-	      (when (memq 'Lines message-required-mail-headers)
-		(insert "Lines: " (message-make-lines) "\n"))
-	      (message-goto-subject)
-	      (end-of-line)
-	      (insert (format " (%d/%d)" n total))
-	      (widen)
-	      (if message-send-mail-real-function
-		  (funcall message-send-mail-real-function)
-		(message-multi-smtp-send-mail)))
-	    (setq n (+ n 1))
-	    (setq p (pop plist))
-	    (erase-buffer)))
+    (save-excursion
+      (setq p (pop plist))
+      (while plist
+        (set-buffer curbuf)
+        (copy-to-buffer tembuf p (car plist))
+        (set-buffer tembuf)
+        (goto-char (point-min))
+        (if header
+        (progn
+          (goto-char (point-min))
+          (narrow-to-region (point) (point))
+          (insert header))
+          (message-goto-eoh)
+          (setq header (buffer-substring (point-min) (point)))
+          (goto-char (point-min))
+          (narrow-to-region (point) (point))
+          (insert header)
+          (message-remove-header "Mime-Version")
+          (message-remove-header "Content-Type")
+          (message-remove-header "Content-Transfer-Encoding")
+          (message-remove-header "Message-ID")
+          (message-remove-header "Lines")
+          (goto-char (point-max))
+          (insert "Mime-Version: 1.0\n")
+          (setq header (buffer-string)))
+        (goto-char (point-max))
+        (insert (format "Content-Type: message/partial; id=\"%s\"; number=%d; total=%d\n\n"
+                id n total))
+        (forward-char -1)
+        (let ((mail-header-separator ""))
+          (when (memq 'Message-ID message-required-mail-headers)
+        (insert "Message-ID: " (message-make-message-id) "\n"))
+          (when (memq 'Lines message-required-mail-headers)
+        (insert "Lines: " (message-make-lines) "\n"))
+          (message-goto-subject)
+          (end-of-line)
+          (insert (format " (%d/%d)" n total))
+          (widen)
+          (if message-send-mail-real-function
+          (funcall message-send-mail-real-function)
+        (message-multi-smtp-send-mail)))
+        (setq n (+ n 1))
+        (setq p (pop plist))
+        (erase-buffer)))
       (kill-buffer tembuf))))
 
 (declare-function hashcash-wait-async "hashcash" (&optional buffer))
@@ -4509,29 +4509,29 @@ This function could be useful in `message-setup-hook'."
 (defun message-send-mail (&optional _)
   (require 'mail-utils)
   (let* ((tembuf (message-generate-new-buffer-clone-locals " message temp"))
-	 (case-fold-search nil)
-	 (news (message-news-p))
-	 (mailbuf (current-buffer))
-	 (message-this-is-mail t)
-	 ;; gnus-setup-posting-charset is autoloaded in mml.el (FIXME
-	 ;; maybe it should not be), which this file requires.  Hence
-	 ;; the fboundp test is always true.  Loading it from gnus-msg
-	 ;; loads many Gnus files (Bug#5642).  If
-	 ;; gnus-group-posting-charset-alist hasn't been customized,
-	 ;; this is just going to return nil anyway.  FIXME it would
-	 ;; be good to improve this further, because even if g-g-p-c-a
-	 ;; has been customized, that is likely to just be for news.
-	 ;; Eg either move the definition from gnus-msg, or separate out
-	 ;; the mail and news parts.
-	 (message-posting-charset
-	  (if (and (fboundp 'gnus-setup-posting-charset)
-		   (boundp 'gnus-group-posting-charset-alist))
-	      (gnus-setup-posting-charset nil)
-	    message-posting-charset))
-	 (headers message-required-mail-headers)
-	 options)
+     (case-fold-search nil)
+     (news (message-news-p))
+     (mailbuf (current-buffer))
+     (message-this-is-mail t)
+     ;; gnus-setup-posting-charset is autoloaded in mml.el (FIXME
+     ;; maybe it should not be), which this file requires.  Hence
+     ;; the fboundp test is always true.  Loading it from gnus-msg
+     ;; loads many Gnus files (Bug#5642).  If
+     ;; gnus-group-posting-charset-alist hasn't been customized,
+     ;; this is just going to return nil anyway.  FIXME it would
+     ;; be good to improve this further, because even if g-g-p-c-a
+     ;; has been customized, that is likely to just be for news.
+     ;; Eg either move the definition from gnus-msg, or separate out
+     ;; the mail and news parts.
+     (message-posting-charset
+      (if (and (fboundp 'gnus-setup-posting-charset)
+           (boundp 'gnus-group-posting-charset-alist))
+          (gnus-setup-posting-charset nil)
+        message-posting-charset))
+     (headers message-required-mail-headers)
+     options)
     (when (and message-generate-hashcash
-	       (not (eq message-generate-hashcash 'opportunistic)))
+           (not (eq message-generate-hashcash 'opportunistic)))
       (message "Generating hashcash...")
       (require 'hashcash)
       ;; Wait for calculations already started to finish...
@@ -4544,28 +4544,28 @@ This function could be useful in `message-setup-hook'."
       (message-narrow-to-headers)
       ;; Generate the Mail-Followup-To header if the header is not there...
       (if (and (message-subscribed-p)
-	       (not (mail-fetch-field "mail-followup-to")))
-	  (setq headers
-		(cons
-		 (cons "Mail-Followup-To" (message-make-mail-followup-to))
-		 message-required-mail-headers))
-	;; otherwise, delete the MFT header if the field is empty
-	(when (equal "" (mail-fetch-field "mail-followup-to"))
-	  (message-remove-header "^Mail-Followup-To:")))
+           (not (mail-fetch-field "mail-followup-to")))
+      (setq headers
+        (cons
+         (cons "Mail-Followup-To" (message-make-mail-followup-to))
+         message-required-mail-headers))
+    ;; otherwise, delete the MFT header if the field is empty
+    (when (equal "" (mail-fetch-field "mail-followup-to"))
+      (message-remove-header "^Mail-Followup-To:")))
       ;; Insert some headers.
       (let ((message-deletable-headers
-	     (if news nil message-deletable-headers)))
-	(message-generate-headers headers))
+         (if news nil message-deletable-headers)))
+    (message-generate-headers headers))
       ;; Check continuation headers.
       (message-check 'continuation-headers
-	(goto-char (point-min))
-	(while (re-search-forward "^[^ \t\n][^ \t\n:]*[ \t\n]" nil t)
-	  (goto-char (match-beginning 0))
-	  (if (y-or-n-p "Fix continuation lines? ")
-	      (insert " ")
-	    (forward-line 1)
-	    (unless (y-or-n-p "Send anyway? ")
-	      (error "Failed to send the message")))))
+    (goto-char (point-min))
+    (while (re-search-forward "^[^ \t\n][^ \t\n:]*[ \t\n]" nil t)
+      (goto-char (match-beginning 0))
+      (if (y-or-n-p "Fix continuation lines? ")
+          (insert " ")
+        (forward-line 1)
+        (unless (y-or-n-p "Send anyway? ")
+          (error "Failed to send the message")))))
       ;; Fold too-long header lines.  They should be no longer than
       ;; 998 octets long.
       (message--fold-long-headers)
@@ -4573,76 +4573,76 @@ This function could be useful in `message-setup-hook'."
       (run-hooks 'message-header-hook))
     (setq options message-options)
     (unwind-protect
-	(with-current-buffer tembuf
-	  (erase-buffer)
-	  (setq message-options options)
-	  ;; Avoid copying text props (except hard newlines).
-	  (insert (with-current-buffer mailbuf
-		    (mml-buffer-substring-no-properties-except-some
-		     (point-min) (point-max))))
-	  ;; Remove some headers.
-	  (message-encode-message-body)
-	  (save-restriction
-	    (message-narrow-to-headers)
-	    ;; We (re)generate the Lines header.
-	    (when (memq 'Lines message-required-mail-headers)
-	      (message-generate-headers '(Lines)))
-	    ;; Remove some headers.
-	    (message-remove-header message-ignored-mail-headers t)
-	    (let ((mail-parse-charset message-default-charset))
-	      (mail-encode-encoded-word-buffer)))
-	  (goto-char (point-max))
-	  ;; require one newline at the end.
-	  (or (= (preceding-char) ?\n)
-	      (insert ?\n))
-	  (message-cleanup-headers)
-	  ;; FIXME: we're inserting the courtesy copy after encoding.
-	  ;; This is wrong if the courtesy copy string contains
-	  ;; non-ASCII characters. -- jh
-	  (when
-	      (save-restriction
-		(message-narrow-to-headers)
-		(and news
-		     (not (message-fetch-field "List-Post"))
-		     (not (message-fetch-field "List-ID"))
-		     (or (message-fetch-field "cc")
-			 (message-fetch-field "bcc")
-			 (message-fetch-field "to"))
-		     (let ((content-type (message-fetch-field
-					  "content-type")))
-		       (and
-			(or
-			 (not content-type)
-			 (string= "text/plain"
-				  (car
-				   (mail-header-parse-content-type
-				    content-type))))
-			(not
-			 (string= "base64"
-				  (message-fetch-field
-				   "content-transfer-encoding")))))))
-	    (message-insert-courtesy-copy
-	     (with-current-buffer mailbuf
-	       message-courtesy-message)))
+    (with-current-buffer tembuf
+      (erase-buffer)
+      (setq message-options options)
+      ;; Avoid copying text props (except hard newlines).
+      (insert (with-current-buffer mailbuf
+            (mml-buffer-substring-no-properties-except-some
+             (point-min) (point-max))))
+      ;; Remove some headers.
+      (message-encode-message-body)
+      (save-restriction
+        (message-narrow-to-headers)
+        ;; We (re)generate the Lines header.
+        (when (memq 'Lines message-required-mail-headers)
+          (message-generate-headers '(Lines)))
+        ;; Remove some headers.
+        (message-remove-header message-ignored-mail-headers t)
+        (let ((mail-parse-charset message-default-charset))
+          (mail-encode-encoded-word-buffer)))
+      (goto-char (point-max))
+      ;; require one newline at the end.
+      (or (= (preceding-char) ?\n)
+          (insert ?\n))
+      (message-cleanup-headers)
+      ;; FIXME: we're inserting the courtesy copy after encoding.
+      ;; This is wrong if the courtesy copy string contains
+      ;; non-ASCII characters. -- jh
+      (when
+          (save-restriction
+        (message-narrow-to-headers)
+        (and news
+             (not (message-fetch-field "List-Post"))
+             (not (message-fetch-field "List-ID"))
+             (or (message-fetch-field "cc")
+             (message-fetch-field "bcc")
+             (message-fetch-field "to"))
+             (let ((content-type (message-fetch-field
+                      "content-type")))
+               (and
+            (or
+             (not content-type)
+             (string= "text/plain"
+                  (car
+                   (mail-header-parse-content-type
+                    content-type))))
+            (not
+             (string= "base64"
+                  (message-fetch-field
+                   "content-transfer-encoding")))))))
+        (message-insert-courtesy-copy
+         (with-current-buffer mailbuf
+           message-courtesy-message)))
           ;; Let's make sure we encoded all the body.
           (cl-assert (save-excursion
                        (goto-char (point-min))
                        (not (re-search-forward "[^\000-\377]" nil t))))
           (mm-disable-multibyte)
-	  (if (or (not message-send-mail-partially-limit)
-		  (< (buffer-size) message-send-mail-partially-limit)
-		  (not (message-y-or-n-p
-			"The message size is too large, split? "
-			t
-			"\
+      (if (or (not message-send-mail-partially-limit)
+          (< (buffer-size) message-send-mail-partially-limit)
+          (not (message-y-or-n-p
+            "The message size is too large, split? "
+            t
+            "\
 The message size, "
-			(/ (buffer-size) 1000) "KB, is too large.
+            (/ (buffer-size) 1000) "KB, is too large.
 
 Some mail gateways (MTA's) bounce large messages.  To avoid the
 problem, answer `y', and the message will be split into several
 smaller pieces, the size of each is about "
-			(/ message-send-mail-partially-limit 1000)
-			"KB except the last
+            (/ message-send-mail-partially-limit 1000)
+            "KB except the last
 one.
 
 However, some mail readers (MUA's) can't read split messages, i.e.,
@@ -4653,13 +4653,13 @@ The size limit is controlled by `message-send-mail-partially-limit'.
 If you always want Gnus to send messages in one piece, set
 `message-send-mail-partially-limit' to nil.
 ")))
-	      (progn
-		(message "Sending via mail...")
-		(if message-send-mail-real-function
-		    (funcall message-send-mail-real-function)
-		  (message-multi-smtp-send-mail)))
-	    (message-send-mail-partially))
-	  (setq options message-options))
+          (progn
+        (message "Sending via mail...")
+        (if message-send-mail-real-function
+            (funcall message-send-mail-real-function)
+          (message-multi-smtp-send-mail)))
+        (message-send-mail-partially))
+      (setq options message-options))
       (kill-buffer tembuf))
     (set-buffer mailbuf)
     (setq message-options options)
@@ -4669,7 +4669,7 @@ If you always want Gnus to send messages in one piece, set
   (goto-char (point-min))
   (while (not (eobp))
     (when (and (looking-at "[^:]+:")
-	       (> (- (line-end-position) (point)) 998))
+           (> (- (line-end-position) (point)) 998))
       (mail-header-fold-field))
     (forward-line 1)))
 
@@ -4684,93 +4684,93 @@ Or, if there's a header that specifies a different method, use
 that instead."
   (let ((method (message-field-value "X-Message-SMTP-Method")))
     (if (not method)
-	(funcall message-send-mail-function)
+    (funcall message-send-mail-function)
       (message-remove-header "X-Message-SMTP-Method")
       (setq method (split-string method))
       (cond
        ((equal (car method) "sendmail")
-	(message-send-mail-with-sendmail))
+    (message-send-mail-with-sendmail))
        ((equal (car method) "smtp")
-	(require 'smtpmail)
-	(let* ((smtpmail-smtp-server (nth 1 method))
-	       (service (nth 2 method))
-	       (port (string-to-number service))
-	       (smtpmail-smtp-service (if (> port 0) port service))
-	       (smtpmail-smtp-user (or (nth 3 method) smtpmail-smtp-user)))
-	  (message-smtpmail-send-it)))
+    (require 'smtpmail)
+    (let* ((smtpmail-smtp-server (nth 1 method))
+           (service (nth 2 method))
+           (port (string-to-number service))
+           (smtpmail-smtp-service (if (> port 0) port service))
+           (smtpmail-smtp-user (or (nth 3 method) smtpmail-smtp-user)))
+      (message-smtpmail-send-it)))
        (t
-	(error "Unknown method %s" method))))))
+    (error "Unknown method %s" method))))))
 
 (defun message-send-mail-with-sendmail ()
   "Send off the prepared buffer with sendmail."
   (require 'sendmail)
   (let ((errbuf (if message-interactive
-		    (message-generate-new-buffer-clone-locals
-		     " sendmail errors")
-		  0))
-	resend-to-addresses delimline)
+            (message-generate-new-buffer-clone-locals
+             " sendmail errors")
+          0))
+    resend-to-addresses delimline)
     (unwind-protect
-	(progn
-	  (let ((case-fold-search t))
-	    (save-restriction
-	      (message-narrow-to-headers)
-	      (setq resend-to-addresses (message-fetch-field "resent-to")))
-	    ;; Change header-delimiter to be what sendmail expects.
-	    (goto-char (point-min))
-	    (re-search-forward
-	     (concat "^" (regexp-quote mail-header-separator) "\n"))
-	    (replace-match "\n")
-	    (backward-char 1)
-	    (setq delimline (point-marker))
-	    (run-hooks 'message-send-mail-hook)
-	    ;; Insert an extra newline if we need it to work around
-	    ;; Sun's bug that swallows newlines.
-	    (goto-char (1+ delimline))
-	    (when (eval message-mailer-swallows-blank-line)
-	      (newline))
-	    (when message-interactive
-	      (with-current-buffer errbuf
-		(erase-buffer))))
-	  (let* ((default-directory "/")
-		 (coding-system-for-write message-send-coding-system)
-		 (cpr (apply
-		       'call-process-region
-		       (append
-			(list (point-min) (point-max) sendmail-program
-			      nil errbuf nil "-oi")
-			message-sendmail-extra-arguments
-			;; Always specify who from,
-			;; since some systems have broken sendmails.
-			;; But some systems are more broken with -f, so
-			;; we'll let users override this.
-			(and (null message-sendmail-f-is-evil)
-			     (list "-f" (message-sendmail-envelope-from)))
-			;; These mean "report errors by mail"
-			;; and "deliver in background".
-			(if (null message-interactive) '("-oem" "-odb"))
-			;; Get the addresses from the message
-			;; unless this is a resend.
-			;; We must not do that for a resend
-			;; because we would find the original addresses.
-			;; For a resend, include the specific addresses.
-			(if resend-to-addresses
-			    (list resend-to-addresses)
-			  '("-t"))))))
-	    (unless (or (null cpr) (and (numberp cpr) (zerop cpr)))
-	      (when errbuf
-		(pop-to-buffer errbuf)
-		(setq errbuf nil))
-	      (error "Sending...failed with exit value %d" cpr)))
-	  (when message-interactive
-	    (with-current-buffer errbuf
-	      (goto-char (point-min))
-	      (while (re-search-forward "\n+ *" nil t)
-		(replace-match "; "))
-	      (if (not (zerop (buffer-size)))
-		  (error "Sending...failed to %s"
-			 (buffer-string))))))
+    (progn
+      (let ((case-fold-search t))
+        (save-restriction
+          (message-narrow-to-headers)
+          (setq resend-to-addresses (message-fetch-field "resent-to")))
+        ;; Change header-delimiter to be what sendmail expects.
+        (goto-char (point-min))
+        (re-search-forward
+         (concat "^" (regexp-quote mail-header-separator) "\n"))
+        (replace-match "\n")
+        (backward-char 1)
+        (setq delimline (point-marker))
+        (run-hooks 'message-send-mail-hook)
+        ;; Insert an extra newline if we need it to work around
+        ;; Sun's bug that swallows newlines.
+        (goto-char (1+ delimline))
+        (when (eval message-mailer-swallows-blank-line)
+          (newline))
+        (when message-interactive
+          (with-current-buffer errbuf
+        (erase-buffer))))
+      (let* ((default-directory "/")
+         (coding-system-for-write message-send-coding-system)
+         (cpr (apply
+               'call-process-region
+               (append
+            (list (point-min) (point-max) sendmail-program
+                  nil errbuf nil "-oi")
+            message-sendmail-extra-arguments
+            ;; Always specify who from,
+            ;; since some systems have broken sendmails.
+            ;; But some systems are more broken with -f, so
+            ;; we'll let users override this.
+            (and (null message-sendmail-f-is-evil)
+                 (list "-f" (message-sendmail-envelope-from)))
+            ;; These mean "report errors by mail"
+            ;; and "deliver in background".
+            (if (null message-interactive) '("-oem" "-odb"))
+            ;; Get the addresses from the message
+            ;; unless this is a resend.
+            ;; We must not do that for a resend
+            ;; because we would find the original addresses.
+            ;; For a resend, include the specific addresses.
+            (if resend-to-addresses
+                (list resend-to-addresses)
+              '("-t"))))))
+        (unless (or (null cpr) (and (numberp cpr) (zerop cpr)))
+          (when errbuf
+        (pop-to-buffer errbuf)
+        (setq errbuf nil))
+          (error "Sending...failed with exit value %d" cpr)))
+      (when message-interactive
+        (with-current-buffer errbuf
+          (goto-char (point-min))
+          (while (re-search-forward "\n+ *" nil t)
+        (replace-match "; "))
+          (if (not (zerop (buffer-size)))
+          (error "Sending...failed to %s"
+             (buffer-string))))))
       (when (bufferp errbuf)
-	(kill-buffer errbuf)))))
+    (kill-buffer errbuf)))))
 
 (defun message-send-mail-with-qmail ()
   "Pass the prepared message buffer to qmail-inject.
@@ -4785,29 +4785,29 @@ to find out how to use this."
   ;; send the message
   (pcase
       (let ((coding-system-for-write message-send-coding-system))
-	(apply
-	 'call-process-region (point-min) (point-max)
-	 message-qmail-inject-program nil nil nil
-	 ;; qmail-inject's default behavior is to look for addresses on the
-	 ;; command line; if there're none, it scans the headers.
-	 ;; yes, it does The Right Thing w.r.t. Resent-To and its kin.
-	 ;;
-	 ;; in general, ALL of qmail-inject's defaults are perfect for simply
-	 ;; reading a formatted (i. e., at least a To: or Resent-To header)
-	 ;; message from stdin.
-	 ;;
-	 ;; qmail also has the advantage of not having been raped by
-	 ;; various vendors, so we don't have to allow for that, either --
-	 ;; compare this with message-send-mail-with-sendmail and weep
-	 ;; for sendmail's lost innocence.
-	 ;;
-	 ;; all this is way cool coz it lets us keep the arguments entirely
-	 ;; free for -inject-arguments -- a big win for the user and for us
-	 ;; since we don't have to play that double-guessing game and the user
-	 ;; gets full control (no gestapo'ish -f's, for instance).  --sj
-	 (if (functionp message-qmail-inject-args)
-	     (funcall message-qmail-inject-args)
-	   message-qmail-inject-args)))
+    (apply
+     'call-process-region (point-min) (point-max)
+     message-qmail-inject-program nil nil nil
+     ;; qmail-inject's default behavior is to look for addresses on the
+     ;; command line; if there're none, it scans the headers.
+     ;; yes, it does The Right Thing w.r.t. Resent-To and its kin.
+     ;;
+     ;; in general, ALL of qmail-inject's defaults are perfect for simply
+     ;; reading a formatted (i. e., at least a To: or Resent-To header)
+     ;; message from stdin.
+     ;;
+     ;; qmail also has the advantage of not having been raped by
+     ;; various vendors, so we don't have to allow for that, either --
+     ;; compare this with message-send-mail-with-sendmail and weep
+     ;; for sendmail's lost innocence.
+     ;;
+     ;; all this is way cool coz it lets us keep the arguments entirely
+     ;; free for -inject-arguments -- a big win for the user and for us
+     ;; since we don't have to play that double-guessing game and the user
+     ;; gets full control (no gestapo'ish -f's, for instance).  --sj
+     (if (functionp message-qmail-inject-args)
+         (funcall message-qmail-inject-args)
+       message-qmail-inject-args)))
     ;; qmail-inject doesn't say anything on its stdout/stderr,
     ;; we have to look at the retval instead
     (0 nil)
@@ -4821,17 +4821,17 @@ to find out how to use this."
 (defun message-send-mail-with-mh ()
   "Send the prepared message buffer with mh."
   (let ((mh-previous-window-config nil)
-	(name (mh-new-draft-name)))
+    (name (mh-new-draft-name)))
     (setq buffer-file-name name)
     ;; MH wants to generate these headers itself.
     (when message-mh-deletable-headers
       (let ((headers message-mh-deletable-headers))
-	(while headers
-	  (goto-char (point-min))
-	  (and (re-search-forward
-		(concat "^" (symbol-name (car headers)) ": *") nil t)
-	       (message-delete-line))
-	  (pop headers))))
+    (while headers
+      (goto-char (point-min))
+      (and (re-search-forward
+        (concat "^" (symbol-name (car headers)) ": *") nil t)
+           (message-delete-line))
+      (pop headers))))
     (run-hooks 'message-send-mail-hook)
     ;; Pass it on to mh.
     (mh-send-letter)))
@@ -4846,7 +4846,7 @@ authentication.  See the Gnus manual for details."
   ;; Change header-delimiter to be what smtpmail expects.
   (goto-char (point-min))
   (when (re-search-forward
-	 (concat "^" (regexp-quote mail-header-separator) "\n"))
+     (concat "^" (regexp-quote mail-header-separator) "\n"))
     (replace-match "\n"))
   (smtpmail-send-it))
 
@@ -4890,104 +4890,104 @@ Otherwise, generate and save a value for `canlock-password' first."
 (defun message-send-news (&optional arg)
   (require 'gnus-msg)
   (let* ((tembuf (message-generate-new-buffer-clone-locals " *message temp*"))
-	 (case-fold-search nil)
-	 (method (if (functionp message-post-method)
-		     (funcall message-post-method arg)
-		   message-post-method))
-	 (newsgroups-field (save-restriction
-			    (message-narrow-to-headers-or-head)
-			    (message-fetch-field "Newsgroups")))
-	 (followup-field (save-restriction
-			   (message-narrow-to-headers-or-head)
-			   (message-fetch-field "Followup-To")))
-	 ;; BUG: We really need to get the charset for each name in the
-	 ;; Newsgroups and Followup-To lines to allow crossposting
-	 ;; between group names with incompatible character sets.
-	 ;; -- Per Abrahamsen <[email-masked]> 2001-10-08.
-	 (group-field-charset
-	  (gnus-group-name-charset method newsgroups-field))
-	 (followup-field-charset
-	  (gnus-group-name-charset method (or followup-field "")))
-	 (rfc2047-header-encoding-alist
-	  (append (when group-field-charset
-		    (list (cons "Newsgroups" group-field-charset)))
-		  (when followup-field-charset
-		    (list (cons "Followup-To" followup-field-charset)))
-		  rfc2047-header-encoding-alist))
-	 (messbuf (current-buffer))
-	 (message-syntax-checks
-	  (if (and arg
-		   (listp message-syntax-checks))
-	      (cons '(existing-newsgroups . disabled)
-		    message-syntax-checks)
-	    message-syntax-checks))
-	 (message-this-is-news t)
-	 (message-posting-charset
-	  (gnus-setup-posting-charset newsgroups-field))
-	 result)
+     (case-fold-search nil)
+     (method (if (functionp message-post-method)
+             (funcall message-post-method arg)
+           message-post-method))
+     (newsgroups-field (save-restriction
+                (message-narrow-to-headers-or-head)
+                (message-fetch-field "Newsgroups")))
+     (followup-field (save-restriction
+               (message-narrow-to-headers-or-head)
+               (message-fetch-field "Followup-To")))
+     ;; BUG: We really need to get the charset for each name in the
+     ;; Newsgroups and Followup-To lines to allow crossposting
+     ;; between group names with incompatible character sets.
+     ;; -- Per Abrahamsen <[email-masked]> 2001-10-08.
+     (group-field-charset
+      (gnus-group-name-charset method newsgroups-field))
+     (followup-field-charset
+      (gnus-group-name-charset method (or followup-field "")))
+     (rfc2047-header-encoding-alist
+      (append (when group-field-charset
+            (list (cons "Newsgroups" group-field-charset)))
+          (when followup-field-charset
+            (list (cons "Followup-To" followup-field-charset)))
+          rfc2047-header-encoding-alist))
+     (messbuf (current-buffer))
+     (message-syntax-checks
+      (if (and arg
+           (listp message-syntax-checks))
+          (cons '(existing-newsgroups . disabled)
+            message-syntax-checks)
+        message-syntax-checks))
+     (message-this-is-news t)
+     (message-posting-charset
+      (gnus-setup-posting-charset newsgroups-field))
+     result)
     (if (not (message-check-news-body-syntax))
-	nil
+    nil
       (save-restriction
-	(message-narrow-to-headers)
-	;; Insert some headers.
-	(message-generate-headers message-required-news-headers)
-	(message-insert-canlock)
-	;; Let the user do all of the above.
-	(run-hooks 'message-header-hook))
+    (message-narrow-to-headers)
+    ;; Insert some headers.
+    (message-generate-headers message-required-news-headers)
+    (message-insert-canlock)
+    ;; Let the user do all of the above.
+    (run-hooks 'message-header-hook))
       ;; Note: This check will be disabled by the ".*" default value for
       ;; gnus-group-name-charset-group-alist. -- Pa 2001-10-07.
       (when (and group-field-charset
-		 (listp message-syntax-checks))
-	(setq message-syntax-checks
-	      (cons '(valid-newsgroups . disabled)
-		    message-syntax-checks)))
+         (listp message-syntax-checks))
+    (setq message-syntax-checks
+          (cons '(valid-newsgroups . disabled)
+            message-syntax-checks)))
       (message-cleanup-headers)
       (if (not (let ((message-post-method method))
-		 (message-check-news-syntax)))
-	  nil
-	(unwind-protect
-	    (with-current-buffer tembuf
-	      (buffer-disable-undo)
-	      (erase-buffer)
-	      ;; Avoid copying text props (except hard newlines).
-	      (insert
-	       (with-current-buffer messbuf
-		 (mml-buffer-substring-no-properties-except-some
-		  (point-min) (point-max))))
-	      (message-encode-message-body)
-	      ;; Remove some headers.
-	      (save-restriction
-		(message-narrow-to-headers)
-		;; We (re)generate the Lines header.
-		(when (memq 'Lines message-required-mail-headers)
-		  (message-generate-headers '(Lines)))
-		;; Remove some headers.
-		(message-remove-header message-ignored-news-headers t)
-		(let ((mail-parse-charset message-default-charset))
-		  (mail-encode-encoded-word-buffer)))
-	      (goto-char (point-max))
-	      ;; require one newline at the end.
-	      (or (= (preceding-char) ?\n)
-		  (insert ?\n))
-	      (let ((case-fold-search t))
-		;; Remove the delimiter.
-		(goto-char (point-min))
-		(re-search-forward
-		 (concat "^" (regexp-quote mail-header-separator) "\n"))
-		(replace-match "\n")
-		(backward-char 1))
-	      (run-hooks 'message-send-news-hook)
-	      (gnus-open-server method)
-	      (message "Sending news via %s..." (gnus-server-string method))
-	      (setq result (let ((mail-header-separator ""))
-			     (gnus-request-post method))))
-	  (kill-buffer tembuf))
-	(set-buffer messbuf)
-	(if result
-	    (push 'news message-sent-message-via)
-	  (message "Couldn't send message via news: %s"
-		   (nnheader-get-report (car method)))
-	  nil)))))
+         (message-check-news-syntax)))
+      nil
+    (unwind-protect
+        (with-current-buffer tembuf
+          (buffer-disable-undo)
+          (erase-buffer)
+          ;; Avoid copying text props (except hard newlines).
+          (insert
+           (with-current-buffer messbuf
+         (mml-buffer-substring-no-properties-except-some
+          (point-min) (point-max))))
+          (message-encode-message-body)
+          ;; Remove some headers.
+          (save-restriction
+        (message-narrow-to-headers)
+        ;; We (re)generate the Lines header.
+        (when (memq 'Lines message-required-mail-headers)
+          (message-generate-headers '(Lines)))
+        ;; Remove some headers.
+        (message-remove-header message-ignored-news-headers t)
+        (let ((mail-parse-charset message-default-charset))
+          (mail-encode-encoded-word-buffer)))
+          (goto-char (point-max))
+          ;; require one newline at the end.
+          (or (= (preceding-char) ?\n)
+          (insert ?\n))
+          (let ((case-fold-search t))
+        ;; Remove the delimiter.
+        (goto-char (point-min))
+        (re-search-forward
+         (concat "^" (regexp-quote mail-header-separator) "\n"))
+        (replace-match "\n")
+        (backward-char 1))
+          (run-hooks 'message-send-news-hook)
+          (gnus-open-server method)
+          (message "Sending news via %s..." (gnus-server-string method))
+          (setq result (let ((mail-header-separator ""))
+                 (gnus-request-post method))))
+      (kill-buffer tembuf))
+    (set-buffer messbuf)
+    (if result
+        (push 'news message-sent-message-via)
+      (message "Couldn't send message via news: %s"
+           (nnheader-get-report (car method)))
+      nil)))))
 
 ;;;
 ;;; Header generation & syntax checking.
@@ -4999,7 +4999,7 @@ Otherwise, generate and save a value for `canlock-password' first."
       t
     (let ((able (assq type message-syntax-checks)))
       (and (consp able)
-	   (eq (cdr able) 'disabled)))))
+       (eq (cdr able) 'disabled)))))
 
 (defun message-check-news-syntax ()
   "Check the syntax of the message."
@@ -5008,9 +5008,9 @@ Otherwise, generate and save a value for `canlock-password' first."
       (widen)
       ;; We narrow to the headers and check them first.
       (save-excursion
-	(save-restriction
-	  (message-narrow-to-headers)
-	  (message-check-news-header-syntax))))))
+    (save-restriction
+      (message-narrow-to-headers)
+      (message-check-news-header-syntax))))))
 
 (defun message-check-news-header-syntax ()
   (and
@@ -5018,287 +5018,287 @@ Otherwise, generate and save a value for `canlock-password' first."
    (message-check 'newsgroups
      (let ((group (message-fetch-field "newsgroups")))
        (or
-	(and group
-	     (not (string-match "\\`[ \t]*\\'" group)))
-	(ignore
-	 (message
-	  "The newsgroups field is empty or missing.  Posting is denied.")))))
+    (and group
+         (not (string-match "\\`[ \t]*\\'" group)))
+    (ignore
+     (message
+      "The newsgroups field is empty or missing.  Posting is denied.")))))
    ;; Check the Subject header.
    (message-check 'subject
      (let* ((case-fold-search t)
-	    (subject (message-fetch-field "subject")))
+        (subject (message-fetch-field "subject")))
        (or
-	(and subject
-	     (not (string-match "\\`[ \t]*\\'" subject)))
-	(ignore
-	 (message
-	  "The subject field is empty or missing.  Posting is denied.")))))
+    (and subject
+         (not (string-match "\\`[ \t]*\\'" subject)))
+    (ignore
+     (message
+      "The subject field is empty or missing.  Posting is denied.")))))
    ;; Check for commands in Subject.
    (message-check 'subject-cmsg
      (if (string-match "^cmsg " (message-fetch-field "subject"))
-	 (y-or-n-p
-	  "The control code \"cmsg\" is in the subject.  Really post? ")
+     (y-or-n-p
+      "The control code \"cmsg\" is in the subject.  Really post? ")
        t))
    ;; Check long header lines.
    (message-check 'long-header-lines
      (let ((header nil)
-	   (length 0)
-	   found)
+       (length 0)
+       found)
        (while (and (not found)
-		   (re-search-forward "^\\([^ \t:]+\\): " nil t))
-	 (if (> (- (point) (match-beginning 0)) 998)
-	     (setq found t
-		   length (- (point) (match-beginning 0)))
-	   (setq header (match-string-no-properties 1)))
-	 (forward-line 1))
+           (re-search-forward "^\\([^ \t:]+\\): " nil t))
+     (if (> (- (point) (match-beginning 0)) 998)
+         (setq found t
+           length (- (point) (match-beginning 0)))
+       (setq header (match-string-no-properties 1)))
+     (forward-line 1))
        (if found
-	   (y-or-n-p (format "Your %s header is too long (%d).  Really post? "
-			     header length))
-	 t)))
+       (y-or-n-p (format "Your %s header is too long (%d).  Really post? "
+                 header length))
+     t)))
    ;; Check for multiple identical headers.
    (message-check 'multiple-headers
      (let (found)
        (while (and (not found)
-		   (re-search-forward "^[^ \t:]+: " nil t))
-	 (save-excursion
-	   (or (re-search-forward
-		(concat "^"
-			(regexp-quote
-			 (setq found
-			       (buffer-substring
-				(match-beginning 0) (- (match-end 0) 2))))
-			":")
-		nil t)
-	       (setq found nil))))
+           (re-search-forward "^[^ \t:]+: " nil t))
+     (save-excursion
+       (or (re-search-forward
+        (concat "^"
+            (regexp-quote
+             (setq found
+                   (buffer-substring
+                (match-beginning 0) (- (match-end 0) 2))))
+            ":")
+        nil t)
+           (setq found nil))))
        (if found
-	   (y-or-n-p (format "Multiple %s headers.  Really post? " found))
-	 t)))
+       (y-or-n-p (format "Multiple %s headers.  Really post? " found))
+     t)))
    ;; Check for Version and Sendsys.
    (message-check 'sendsys
      (if (re-search-forward "^Sendsys:\\|^Version:" nil t)
-	 (y-or-n-p
-	  (format "The article contains a %s command.  Really post? "
-		  (buffer-substring (match-beginning 0)
-				    (1- (match-end 0)))))
+     (y-or-n-p
+      (format "The article contains a %s command.  Really post? "
+          (buffer-substring (match-beginning 0)
+                    (1- (match-end 0)))))
        t))
    ;; See whether we can shorten Followup-To.
    (message-check 'shorten-followup-to
      (let ((newsgroups (message-fetch-field "newsgroups"))
-	   (followup-to (message-fetch-field "followup-to"))
-	   to)
+       (followup-to (message-fetch-field "followup-to"))
+       to)
        (when (and newsgroups
-		  (string-match "," newsgroups)
-		  (not followup-to)
-		  (not
-		   (zerop
-		    (length
-		     (setq to (completing-read
-			       "Followups to (default no Followup-To header): "
-			       (mapcar #'list
-				       (cons "poster"
-					     (message-tokenize-header
-					      newsgroups)))))))))
-	 (goto-char (point-min))
-	 (insert "Followup-To: " to "\n"))
+          (string-match "," newsgroups)
+          (not followup-to)
+          (not
+           (zerop
+            (length
+             (setq to (completing-read
+                   "Followups to (default no Followup-To header): "
+                   (mapcar #'list
+                       (cons "poster"
+                         (message-tokenize-header
+                          newsgroups)))))))))
+     (goto-char (point-min))
+     (insert "Followup-To: " to "\n"))
        t))
    ;; Check "Shoot me".
    (message-check 'shoot
      (if (re-search-forward
-	  "Message-ID.*.i-did-not-set--mail-host-address--so-tickle-me" nil t)
-	 (y-or-n-p "You appear to have a misconfigured system.  Really post? ")
+      "Message-ID.*.i-did-not-set--mail-host-address--so-tickle-me" nil t)
+     (y-or-n-p "You appear to have a misconfigured system.  Really post? ")
        t))
    ;; Check for Approved.
    (message-check 'approved
      (if (re-search-forward "^Approved:" nil t)
-	 (y-or-n-p "The article contains an Approved header.  Really post? ")
+     (y-or-n-p "The article contains an Approved header.  Really post? ")
        t))
    ;; Check the Message-ID header.
    (message-check 'message-id
      (let* ((case-fold-search t)
-	    (message-id (message-fetch-field "message-id" t)))
+        (message-id (message-fetch-field "message-id" t)))
        (or (not message-id)
-	   ;; Is there an @ in the ID?
-	   (and (string-match "@" message-id)
-		;; Is there a dot in the ID?
-		(string-match "@[^.]*\\." message-id)
-		;; Does the ID end with a dot?
-		(not (string-match "\\.>" message-id)))
-	   (y-or-n-p
-	    (format "The Message-ID looks strange: \"%s\".  Really post? "
-		    message-id)))))
+       ;; Is there an @ in the ID?
+       (and (string-match "@" message-id)
+        ;; Is there a dot in the ID?
+        (string-match "@[^.]*\\." message-id)
+        ;; Does the ID end with a dot?
+        (not (string-match "\\.>" message-id)))
+       (y-or-n-p
+        (format "The Message-ID looks strange: \"%s\".  Really post? "
+            message-id)))))
    ;; Check the Newsgroups & Followup-To headers.
    (message-check 'existing-newsgroups
      (let* ((case-fold-search t)
-	    (newsgroups (message-fetch-field "newsgroups"))
-	    (followup-to (message-fetch-field "followup-to"))
-	    (groups (message-tokenize-header
-		     (if followup-to
-			 (concat newsgroups "," followup-to)
-		       newsgroups)))
-	    (post-method (if (functionp message-post-method)
-			     (funcall message-post-method)
-			   message-post-method))
-	    ;; KLUDGE to handle nnvirtual groups.  Doing this right
-	    ;; would probably involve a new nnoo function.
-	    ;; -- Per Abrahamsen <[email-masked]>, 2001-10-17.
-	    (method (if (and (consp post-method)
-			     (eq (car post-method) 'nnvirtual)
-			     gnus-message-group-art)
-			(let ((group (car (nnvirtual-find-group-art
-					   (car gnus-message-group-art)
-					   (cdr gnus-message-group-art)))))
-			  (gnus-find-method-for-group group))
-		      post-method))
-	    (known-groups
-	     (mapcar (lambda (n)
-		       (gnus-group-name-decode
-			(gnus-group-real-name n)
-			(gnus-group-name-charset method n)))
-		     (gnus-groups-from-server method)))
-	    errors)
+        (newsgroups (message-fetch-field "newsgroups"))
+        (followup-to (message-fetch-field "followup-to"))
+        (groups (message-tokenize-header
+             (if followup-to
+             (concat newsgroups "," followup-to)
+               newsgroups)))
+        (post-method (if (functionp message-post-method)
+                 (funcall message-post-method)
+               message-post-method))
+        ;; KLUDGE to handle nnvirtual groups.  Doing this right
+        ;; would probably involve a new nnoo function.
+        ;; -- Per Abrahamsen <[email-masked]>, 2001-10-17.
+        (method (if (and (consp post-method)
+                 (eq (car post-method) 'nnvirtual)
+                 gnus-message-group-art)
+            (let ((group (car (nnvirtual-find-group-art
+                       (car gnus-message-group-art)
+                       (cdr gnus-message-group-art)))))
+              (gnus-find-method-for-group group))
+              post-method))
+        (known-groups
+         (mapcar (lambda (n)
+               (gnus-group-name-decode
+            (gnus-group-real-name n)
+            (gnus-group-name-charset method n)))
+             (gnus-groups-from-server method)))
+        errors)
        (while groups
-	 (when (and (not (equal (car groups) "poster"))
-		    (not (member (car groups) known-groups))
-		    (not (member (car groups) errors)))
-	   (push (car groups) errors))
-	 (pop groups))
+     (when (and (not (equal (car groups) "poster"))
+            (not (member (car groups) known-groups))
+            (not (member (car groups) errors)))
+       (push (car groups) errors))
+     (pop groups))
        (cond
-	;; Gnus is not running.
-	((or (not (and (boundp 'gnus-active-hashtb)
-		       gnus-active-hashtb))
-	     (not (boundp 'gnus-read-active-file)))
-	 t)
-	;; We don't have all the group names.
-	((and (or (not gnus-read-active-file)
-		  (eq gnus-read-active-file 'some))
-	      errors)
-	 (y-or-n-p
-	  (format
-	   "Really use %s possibly unknown group%s: %s? "
-	   (if (= (length errors) 1) "this" "these")
-	   (if (= (length errors) 1) "" "s")
-	   (mapconcat 'identity errors ", "))))
-	;; There were no errors.
-	((not errors)
-	 t)
-	;; There are unknown groups.
-	(t
-	 (y-or-n-p
-	  (format
-	   "Really post to %s unknown group%s: %s? "
-	   (if (= (length errors) 1) "this" "these")
-	   (if (= (length errors) 1) "" "s")
-	   (mapconcat 'identity errors ", ")))))))
+    ;; Gnus is not running.
+    ((or (not (and (boundp 'gnus-active-hashtb)
+               gnus-active-hashtb))
+         (not (boundp 'gnus-read-active-file)))
+     t)
+    ;; We don't have all the group names.
+    ((and (or (not gnus-read-active-file)
+          (eq gnus-read-active-file 'some))
+          errors)
+     (y-or-n-p
+      (format
+       "Really use %s possibly unknown group%s: %s? "
+       (if (= (length errors) 1) "this" "these")
+       (if (= (length errors) 1) "" "s")
+       (mapconcat 'identity errors ", "))))
+    ;; There were no errors.
+    ((not errors)
+     t)
+    ;; There are unknown groups.
+    (t
+     (y-or-n-p
+      (format
+       "Really post to %s unknown group%s: %s? "
+       (if (= (length errors) 1) "this" "these")
+       (if (= (length errors) 1) "" "s")
+       (mapconcat 'identity errors ", ")))))))
    ;; Check continuation headers.
    (message-check 'continuation-headers
      (goto-char (point-min))
      (let ((do-posting t))
        (while (re-search-forward "^[^ \t\n][^ \t\n:]*[ \t\n]" nil t)
-	 (goto-char (match-beginning 0))
-	 (if (y-or-n-p "Fix continuation lines? ")
-	     (insert " ")
-	   (forward-line 1)
-	   (unless (y-or-n-p "Send anyway? ")
-	     (setq do-posting nil))))
+     (goto-char (match-beginning 0))
+     (if (y-or-n-p "Fix continuation lines? ")
+         (insert " ")
+       (forward-line 1)
+       (unless (y-or-n-p "Send anyway? ")
+         (setq do-posting nil))))
        do-posting))
    ;; Check the Newsgroups & Followup-To headers for syntax errors.
    (message-check 'valid-newsgroups
      (let ((case-fold-search t)
-	   (headers '("Newsgroups" "Followup-To"))
-	   header error)
+       (headers '("Newsgroups" "Followup-To"))
+       header error)
        (while (and headers (not error))
-	 (when (setq header (mail-fetch-field (car headers)))
-	   (if (or
-		(not
-		 (string-match
-		  "\\`\\([-+_&.a-zA-Z0-9]+\\)?\\(,[-+_&.a-zA-Z0-9]+\\)*\\'"
-		  header))
-		(memq
-		 nil (mapcar
-		      (lambda (g)
-			(not (string-match "\\.\\'\\|\\.\\." g)))
-		      (message-tokenize-header header ","))))
-	       (setq error t)))
-	 (unless error
-	   (pop headers)))
+     (when (setq header (mail-fetch-field (car headers)))
+       (if (or
+        (not
+         (string-match
+          "\\`\\([-+_&.a-zA-Z0-9]+\\)?\\(,[-+_&.a-zA-Z0-9]+\\)*\\'"
+          header))
+        (memq
+         nil (mapcar
+              (lambda (g)
+            (not (string-match "\\.\\'\\|\\.\\." g)))
+              (message-tokenize-header header ","))))
+           (setq error t)))
+     (unless error
+       (pop headers)))
        (if (not error)
-	   t
-	 (y-or-n-p
-	  (format "The %s header looks odd: \"%s\".  Really post? "
-		  (car headers) header)))))
+       t
+     (y-or-n-p
+      (format "The %s header looks odd: \"%s\".  Really post? "
+          (car headers) header)))))
    (message-check 'repeated-newsgroups
      (let ((case-fold-search t)
-	   (headers '("Newsgroups" "Followup-To"))
-	   header error groups group)
+       (headers '("Newsgroups" "Followup-To"))
+       header error groups group)
        (while (and headers
-		   (not error))
-	 (when (setq header (mail-fetch-field (pop headers)))
-	   (setq groups (message-tokenize-header header ","))
-	   (while (setq group (pop groups))
-	     (when (member group groups)
-	       (setq error group
-		     groups nil)))))
+           (not error))
+     (when (setq header (mail-fetch-field (pop headers)))
+       (setq groups (message-tokenize-header header ","))
+       (while (setq group (pop groups))
+         (when (member group groups)
+           (setq error group
+             groups nil)))))
        (if (not error)
-	   t
-	 (y-or-n-p
-	  (format "Group %s is repeated in headers.  Really post? " error)))))
+       t
+     (y-or-n-p
+      (format "Group %s is repeated in headers.  Really post? " error)))))
    ;; Check the From header.
    (message-check 'from
      (let* ((case-fold-search t)
-	    (from (message-fetch-field "from"))
-	    ad)
+        (from (message-fetch-field "from"))
+        ad)
        (cond
-	((not from)
-	 (message "There is no From line.  Posting is denied.")
-	 nil)
-	((or (not (string-match
-		   "@[^\\.]*\\."
-		   (setq ad (nth 1 (mail-extract-address-components
-				    from))))) ;larsi@ifi
-	     (string-match "\\.\\." ad)	;larsi@ifi..uio
-	     (string-match "@\\." ad)	;larsi@.ifi.uio
-	     (string-match "\\.$" ad)	;[email-masked].
-	     (not (string-match "^[^@]+@[^@]+$" ad)) ;larsi.ifi.uio
-	     (string-match "(.*).*(.*)" from)) ;(lars) (lars)
-	 (message
-	  "Denied posting -- the From looks strange: \"%s\"." from)
-	 nil)
-	((let ((addresses (rfc822-addresses from)))
-	   ;; `rfc822-addresses' returns a string if parsing fails.
-	   (while (and (consp addresses)
-		       (not (eq (string-to-char (car addresses)) ?\()))
-	     (setq addresses (cdr addresses)))
-	   addresses)
-	 (message
-	  "Denied posting -- bad From address: \"%s\"." from)
-	 nil)
-	(t t))))
+    ((not from)
+     (message "There is no From line.  Posting is denied.")
+     nil)
+    ((or (not (string-match
+           "@[^\\.]*\\."
+           (setq ad (nth 1 (mail-extract-address-components
+                    from))))) ;larsi@ifi
+         (string-match "\\.\\." ad)	;larsi@ifi..uio
+         (string-match "@\\." ad)	;larsi@.ifi.uio
+         (string-match "\\.$" ad)	;[email-masked].
+         (not (string-match "^[^@]+@[^@]+$" ad)) ;larsi.ifi.uio
+         (string-match "(.*).*(.*)" from)) ;(lars) (lars)
+     (message
+      "Denied posting -- the From looks strange: \"%s\"." from)
+     nil)
+    ((let ((addresses (rfc822-addresses from)))
+       ;; `rfc822-addresses' returns a string if parsing fails.
+       (while (and (consp addresses)
+               (not (eq (string-to-char (car addresses)) ?\()))
+         (setq addresses (cdr addresses)))
+       addresses)
+     (message
+      "Denied posting -- bad From address: \"%s\"." from)
+     nil)
+    (t t))))
    ;; Check the Reply-To header.
    (message-check 'reply-to
      (let* ((case-fold-search t)
-	    (reply-to (message-fetch-field "reply-to"))
-	    ad)
+        (reply-to (message-fetch-field "reply-to"))
+        ad)
        (cond
-	((not reply-to)
-	 t)
-	((string-match "," reply-to)
-	 (y-or-n-p
-	  (format "Multiple Reply-To addresses: \"%s\". Really post? "
-		  reply-to)))
-	((or (not (string-match
-		   "@[^\\.]*\\."
-		   (setq ad (nth 1 (mail-extract-address-components
-				    reply-to))))) ;larsi@ifi
-	     (string-match "\\.\\." ad)	;larsi@ifi..uio
-	     (string-match "@\\." ad)	;larsi@.ifi.uio
-	     (string-match "\\.$" ad)	;[email-masked].
-	     (not (string-match "^[^@]+@[^@]+$" ad)) ;larsi.ifi.uio
-	     (string-match "(.*).*(.*)" reply-to)) ;(lars) (lars)
-	 (y-or-n-p
-	  (format
-	   "The Reply-To looks strange: \"%s\". Really post? "
-	   reply-to)))
-	(t t))))))
+    ((not reply-to)
+     t)
+    ((string-match "," reply-to)
+     (y-or-n-p
+      (format "Multiple Reply-To addresses: \"%s\". Really post? "
+          reply-to)))
+    ((or (not (string-match
+           "@[^\\.]*\\."
+           (setq ad (nth 1 (mail-extract-address-components
+                    reply-to))))) ;larsi@ifi
+         (string-match "\\.\\." ad)	;larsi@ifi..uio
+         (string-match "@\\." ad)	;larsi@.ifi.uio
+         (string-match "\\.$" ad)	;[email-masked].
+         (not (string-match "^[^@]+@[^@]+$" ad)) ;larsi.ifi.uio
+         (string-match "(.*).*(.*)" reply-to)) ;(lars) (lars)
+     (y-or-n-p
+      (format
+       "The Reply-To looks strange: \"%s\". Really post? "
+       reply-to)))
+    (t t))))))
 
 (defun message-check-news-body-syntax ()
   (and
@@ -5309,16 +5309,16 @@ Otherwise, generate and save a value for `canlock-password' first."
       (concat "^" (regexp-quote mail-header-separator) "$"))
      (forward-line 1)
      (while (and
-	     (or (looking-at
-		  "<#\\(/\\)?\\(multipart\\|part\\|external\\|mml\\)")
-		 (let ((p (point)))
-		   (end-of-line)
-		   (< (- (point) p) 80)))
-	     (zerop (forward-line 1))))
+         (or (looking-at
+          "<#\\(/\\)?\\(multipart\\|part\\|external\\|mml\\)")
+         (let ((p (point)))
+           (end-of-line)
+           (< (- (point) p) 80)))
+         (zerop (forward-line 1))))
      (or (bolp)
-	 (eobp)
-	 (y-or-n-p
-	  "You have lines longer than 79 characters.  Really post? ")))
+     (eobp)
+     (y-or-n-p
+      "You have lines longer than 79 characters.  Really post? ")))
    ;; Check whether the article is empty.
    (message-check 'empty
      (goto-char (point-min))
@@ -5330,26 +5330,26 @@ Otherwise, generate and save a value for `canlock-password' first."
        (re-search-backward message-signature-separator nil t)
        (beginning-of-line)
        (or (re-search-backward "[^ \n\t]" b t)
-	   (if (message-gnksa-enable-p 'empty-article)
-	       (y-or-n-p "Empty article.  Really post? ")
-	     (message "Denied posting -- Empty article.")
-	     nil))))
+       (if (message-gnksa-enable-p 'empty-article)
+           (y-or-n-p "Empty article.  Really post? ")
+         (message "Denied posting -- Empty article.")
+         nil))))
    ;; Check for control characters.
    (message-check 'control-chars
      (if (re-search-forward
-	  (eval-when-compile
+      (eval-when-compile
             (decode-coding-string "[\000-\007\013\015-\032\034-\037\200-\237]"
                                   'binary))
-	  nil t)
-	 (y-or-n-p
-	  "The article contains control characters.  Really post? ")
+      nil t)
+     (y-or-n-p
+      "The article contains control characters.  Really post? ")
        t))
    ;; Check excessive size.
    (message-check 'size
      (if (> (buffer-size) 60000)
-	 (y-or-n-p
-	  (format "The article is %d octets long.  Really post? "
-		  (buffer-size)))
+     (y-or-n-p
+      (format "The article is %d octets long.  Really post? "
+          (buffer-size)))
        t))
    ;; Check whether any new text has been added.
    (message-check 'new-text
@@ -5357,48 +5357,48 @@ Otherwise, generate and save a value for `canlock-password' first."
       (not message-checksum)
       (not (eq (message-checksum) message-checksum))
       (if (message-gnksa-enable-p 'quoted-text-only)
-	  (y-or-n-p
-	   "It looks like no new text has been added.  Really post? ")
-	(message "Denied posting -- no new text has been added.")
-	nil)))
+      (y-or-n-p
+       "It looks like no new text has been added.  Really post? ")
+    (message "Denied posting -- no new text has been added.")
+    nil)))
    ;; Check the length of the signature.
    (message-check 'signature
      (let (sig-start sig-end)
        (goto-char (point-max))
        (if (not (re-search-backward message-signature-separator nil t))
-	   t
-	 (setq sig-start (1+ (point-at-eol)))
-	 (setq sig-end
-	       (if (re-search-forward
-		    "<#/?\\(multipart\\|part\\|external\\|mml\\)" nil t)
-		   (- (point-at-bol) 1)
-		 (point-max)))
-	 (if (>= (count-lines sig-start sig-end) 5)
-	     (if (message-gnksa-enable-p 'signature)
-		 (y-or-n-p
-		  (format "Signature is excessively long (%d lines).  Really post? "
-			  (count-lines sig-start sig-end)))
-	       (message "Denied posting -- Excessive signature.")
-	       nil)
-	   t))))
+       t
+     (setq sig-start (1+ (point-at-eol)))
+     (setq sig-end
+           (if (re-search-forward
+            "<#/?\\(multipart\\|part\\|external\\|mml\\)" nil t)
+           (- (point-at-bol) 1)
+         (point-max)))
+     (if (>= (count-lines sig-start sig-end) 5)
+         (if (message-gnksa-enable-p 'signature)
+         (y-or-n-p
+          (format "Signature is excessively long (%d lines).  Really post? "
+              (count-lines sig-start sig-end)))
+           (message "Denied posting -- Excessive signature.")
+           nil)
+       t))))
    ;; Ensure that text follows last quoted portion.
    (message-check 'quoting-style
      (goto-char (point-max))
      (let ((no-problem t))
        (when (search-backward-regexp "^>[^\n]*\n" nil t)
-	 (setq no-problem (search-forward-regexp "^[ \t]*[^>\n]" nil t)))
+     (setq no-problem (search-forward-regexp "^[ \t]*[^>\n]" nil t)))
        (if no-problem
-	   t
-	 (if (message-gnksa-enable-p 'quoted-text-only)
-	     (y-or-n-p "Your text should follow quoted text.  Really post? ")
-	   ;; Ensure that
-	   (goto-char (point-min))
-	   (re-search-forward
-	    (concat "^" (regexp-quote mail-header-separator) "$"))
-	   (if (search-forward-regexp "^[ \t]*[^>\n]" nil t)
-	       (y-or-n-p "Your text should follow quoted text.  Really post? ")
-	     (message "Denied posting -- only quoted text.")
-	     nil)))))))
+       t
+     (if (message-gnksa-enable-p 'quoted-text-only)
+         (y-or-n-p "Your text should follow quoted text.  Really post? ")
+       ;; Ensure that
+       (goto-char (point-min))
+       (re-search-forward
+        (concat "^" (regexp-quote mail-header-separator) "$"))
+       (if (search-forward-regexp "^[ \t]*[^>\n]" nil t)
+           (y-or-n-p "Your text should follow quoted text.  Really post? ")
+         (message "Denied posting -- only quoted text.")
+         nil)))))))
 
 (defun message-checksum ()
   "Return a \"checksum\" for the current buffer."
@@ -5408,74 +5408,74 @@ Otherwise, generate and save a value for `canlock-password' first."
       (re-search-forward
        (concat "^" (regexp-quote mail-header-separator) "$"))
       (while (not (eobp))
-	(when (not (looking-at "[ \t\n]"))
-	  (setq sum (logxor (ash sum 1) (if (natnump sum) 0 1)
-			    (char-after))))
-	(forward-char 1)))
+    (when (not (looking-at "[ \t\n]"))
+      (setq sum (logxor (ash sum 1) (if (natnump sum) 0 1)
+                (char-after))))
+    (forward-char 1)))
     sum))
 
 (defun message-do-fcc ()
   "Process Fcc headers in the current buffer."
   (let ((case-fold-search t)
-	(buf (current-buffer))
-	(mml-externalize-attachments message-fcc-externalize-attachments)
-	(file (message-field-value "fcc" t))
-	list)
+    (buf (current-buffer))
+    (mml-externalize-attachments message-fcc-externalize-attachments)
+    (file (message-field-value "fcc" t))
+    list)
     (when file
       (with-temp-buffer
-	(insert-buffer-substring buf)
-	(message-clone-locals buf)
-	(message-encode-message-body)
-	(save-restriction
-	  (message-narrow-to-headers)
-	  (while (setq file (message-fetch-field "fcc" t))
-	    (push file list)
-	    (message-remove-header "fcc" nil t))
-	  (let ((mail-parse-charset message-default-charset)
-		(rfc2047-header-encoding-alist
-		 (cons '("Newsgroups" . default)
-		       rfc2047-header-encoding-alist)))
-	    (mail-encode-encoded-word-buffer)))
-	(goto-char (point-min))
-	(when (re-search-forward
-	       (concat "^" (regexp-quote mail-header-separator) "$")
-	       nil t)
-	  (replace-match "" t t ))
-	;; Process Fcc operations.
-	(while list
-	  (setq file (pop list))
-	  (if (string-match "^[ \t]*|[ \t]*\\(.*\\)[ \t]*$" file)
-	      ;; Pipe the article to the program in question.
-	      (call-shell-region (point-min) (point-max) (match-string 1 file))
-	    ;; Save the article.
-	    (setq file (expand-file-name file))
-	    (unless (file-exists-p (file-name-directory file))
-	      (make-directory (file-name-directory file) t))
-	    (if (and message-fcc-handler-function
-		     (not (eq message-fcc-handler-function 'rmail-output)))
-		(funcall message-fcc-handler-function file)
-	      ;; FIXME this option, rmail-output (also used if
-	      ;; message-fcc-handler-function is nil) is not
-	      ;; documented anywhere AFAICS.  It should work in Emacs
-	      ;; 23; I suspect it does not work in Emacs 22.
-	      ;; FIXME I don't see the need for the two different cases here.
-	      ;; mail-use-rfc822 makes no difference (in Emacs 23),and
-	      ;; the third argument just controls \"Wrote file\" message.
-	      (if (and (file-readable-p file) (mail-file-babyl-p file))
-		  (rmail-output file 1 nil t)
-		(let ((mail-use-rfc822 t))
-		  (rmail-output file 1 t t))))))))))
+    (insert-buffer-substring buf)
+    (message-clone-locals buf)
+    (message-encode-message-body)
+    (save-restriction
+      (message-narrow-to-headers)
+      (while (setq file (message-fetch-field "fcc" t))
+        (push file list)
+        (message-remove-header "fcc" nil t))
+      (let ((mail-parse-charset message-default-charset)
+        (rfc2047-header-encoding-alist
+         (cons '("Newsgroups" . default)
+               rfc2047-header-encoding-alist)))
+        (mail-encode-encoded-word-buffer)))
+    (goto-char (point-min))
+    (when (re-search-forward
+           (concat "^" (regexp-quote mail-header-separator) "$")
+           nil t)
+      (replace-match "" t t ))
+    ;; Process Fcc operations.
+    (while list
+      (setq file (pop list))
+      (if (string-match "^[ \t]*|[ \t]*\\(.*\\)[ \t]*$" file)
+          ;; Pipe the article to the program in question.
+          (call-shell-region (point-min) (point-max) (match-string 1 file))
+        ;; Save the article.
+        (setq file (expand-file-name file))
+        (unless (file-exists-p (file-name-directory file))
+          (make-directory (file-name-directory file) t))
+        (if (and message-fcc-handler-function
+             (not (eq message-fcc-handler-function 'rmail-output)))
+        (funcall message-fcc-handler-function file)
+          ;; FIXME this option, rmail-output (also used if
+          ;; message-fcc-handler-function is nil) is not
+          ;; documented anywhere AFAICS.  It should work in Emacs
+          ;; 23; I suspect it does not work in Emacs 22.
+          ;; FIXME I don't see the need for the two different cases here.
+          ;; mail-use-rfc822 makes no difference (in Emacs 23),and
+          ;; the third argument just controls \"Wrote file\" message.
+          (if (and (file-readable-p file) (mail-file-babyl-p file))
+          (rmail-output file 1 nil t)
+        (let ((mail-use-rfc822 t))
+          (rmail-output file 1 t t))))))))))
 
 (defun message-output (filename)
   "Append this article to Unix/babyl mail file FILENAME."
   (if (or (and (file-readable-p filename)
-	       (mail-file-babyl-p filename))
-	  ;; gnus-output-to-mail does the wrong thing with live, mbox
-	  ;; Rmail buffers in Emacs 23.
-	  ;; http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=597255
-	  (let ((buff (find-buffer-visiting filename)))
-	    (and buff (with-current-buffer buff
-			(eq major-mode 'rmail-mode)))))
+           (mail-file-babyl-p filename))
+      ;; gnus-output-to-mail does the wrong thing with live, mbox
+      ;; Rmail buffers in Emacs 23.
+      ;; http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=597255
+      (let ((buff (find-buffer-visiting filename)))
+        (and buff (with-current-buffer buff
+            (eq major-mode 'rmail-mode)))))
       (gnus-output-to-rmail filename t)
     (gnus-output-to-mail filename t)))
 
@@ -5494,22 +5494,22 @@ Otherwise, generate and save a value for `canlock-password' first."
     (goto-char (point-min))
     (while (re-search-forward "^\\(Newsgroups\\|Followup-To\\): +" nil t)
       (save-restriction
-	(narrow-to-region
-	 (point)
-	 (if (re-search-forward "^[^ \t]" nil t)
-	     (match-beginning 0)
-	   (forward-line 1)
-	   (point)))
-	(goto-char (point-min))
-	(while (re-search-forward "\n[ \t]+" nil t)
-	  (replace-match " " t t))     ;No line breaks (too confusing)
-	(goto-char (point-min))
-	(while (re-search-forward "[ \t\n]*,[ \t\n]*\\|[ \t]+" nil t)
-	  (replace-match "," t t))
-	(goto-char (point-min))
-	;; Remove trailing commas.
-	(when (re-search-forward ",+$" nil t)
-	  (replace-match "" t t))))))
+    (narrow-to-region
+     (point)
+     (if (re-search-forward "^[^ \t]" nil t)
+         (match-beginning 0)
+       (forward-line 1)
+       (point)))
+    (goto-char (point-min))
+    (while (re-search-forward "\n[ \t]+" nil t)
+      (replace-match " " t t))     ;No line breaks (too confusing)
+    (goto-char (point-min))
+    (while (re-search-forward "[ \t\n]*,[ \t\n]*\\|[ \t]+" nil t)
+      (replace-match "," t t))
+    (goto-char (point-min))
+    ;; Remove trailing commas.
+    (when (re-search-forward ",+$" nil t)
+      (replace-match "" t t))))))
 
 (defun message-make-date (&optional now)
   "Make a valid data header.
@@ -5529,29 +5529,29 @@ If NOW, use that time instead."
 
 In posting styles use `(\"Expires\" (make-expires-date 30))'."
   (let* ((cur (decode-time))
-	 (nday (+ days (nth 3 cur))))
+     (nday (+ days (nth 3 cur))))
     (setf (nth 3 cur) nday)
     (message-make-date (apply 'encode-time cur))))
 
 (defun message-make-message-id ()
   "Make a unique Message-ID."
   (concat "<" (message-unique-id)
-	  (let ((psubject (save-excursion (message-fetch-field "subject")))
-		(psupersedes
-		 (save-excursion (message-fetch-field "supersedes"))))
-	    (if (or
-		 (and message-reply-headers
-		      (mail-header-references message-reply-headers)
-		      (mail-header-subject message-reply-headers)
-		      psubject
-		      (not (string=
-			    (message-strip-subject-re
-			     (mail-header-subject message-reply-headers))
-			    (message-strip-subject-re psubject))))
-		 (and psupersedes
-		      (string-match "_-_@" psupersedes)))
-		"_-_" ""))
-	  "@" (message-make-fqdn) ">"))
+      (let ((psubject (save-excursion (message-fetch-field "subject")))
+        (psupersedes
+         (save-excursion (message-fetch-field "supersedes"))))
+        (if (or
+         (and message-reply-headers
+              (mail-header-references message-reply-headers)
+              (mail-header-subject message-reply-headers)
+              psubject
+              (not (string=
+                (message-strip-subject-re
+                 (mail-header-subject message-reply-headers))
+                (message-strip-subject-re psubject))))
+         (and psupersedes
+              (string-match "_-_@" psupersedes)))
+        "_-_" ""))
+      "@" (message-make-fqdn) ">"))
 
 (defvar message-unique-id-char nil)
 
@@ -5563,25 +5563,25 @@ In posting styles use `(\"Expires\" (make-expires-date 30))'."
   ;; Don't use microseconds from (current-time), they may be unsupported.
   ;; Instead we use this randomly inited counter.
   (setq message-unique-id-char
-	(% (1+ (or message-unique-id-char
-		   (logand (random most-positive-fixnum) (1- (lsh 1 20)))))
-	   ;; (current-time) returns 16-bit ints,
-	   ;; and 2^16*25 just fits into 4 digits i base 36.
-	   (* 25 25)))
+    (% (1+ (or message-unique-id-char
+           (logand (random most-positive-fixnum) (1- (lsh 1 20)))))
+       ;; (current-time) returns 16-bit ints,
+       ;; and 2^16*25 just fits into 4 digits i base 36.
+       (* 25 25)))
   (let ((tm (current-time)))
     (concat
      (if (or (eq system-type 'ms-dos)
-	     ;; message-number-base36 doesn't handle bigints.
-	     (floatp (user-uid)))
-	 (let ((user (downcase (user-login-name))))
-	   (while (string-match "[^a-z0-9_]" user)
-	     (aset user (match-beginning 0) ?_))
-	   user)
+         ;; message-number-base36 doesn't handle bigints.
+         (floatp (user-uid)))
+     (let ((user (downcase (user-login-name))))
+       (while (string-match "[^a-z0-9_]" user)
+         (aset user (match-beginning 0) ?_))
+       user)
        (message-number-base36 (user-uid) -1))
      (message-number-base36 (+ (car tm)
-			       (lsh (% message-unique-id-char 25) 16)) 4)
+                   (lsh (% message-unique-id-char 25) 16)) 4)
      (message-number-base36 (+ (nth 1 tm)
-			       (lsh (/ message-unique-id-char 25) 16)) 4)
+                   (lsh (/ message-unique-id-char 25) 16)) 4)
      ;; Append a given name, because while the generated ID is unique
      ;; to this newsreader, other newsreaders might otherwise generate
      ;; the same ID via another algorithm.
@@ -5589,33 +5589,33 @@ In posting styles use `(\"Expires\" (make-expires-date 30))'."
 
 (defun message-number-base36 (num len)
   (if (if (< len 0)
-	  (<= num 0)
-	(= len 0))
+      (<= num 0)
+    (= len 0))
       ""
     (concat (message-number-base36 (/ num 36) (1- len))
-	    (char-to-string (aref "zyxwvutsrqponmlkjihgfedcba9876543210"
-				  (% num 36))))))
+        (char-to-string (aref "zyxwvutsrqponmlkjihgfedcba9876543210"
+                  (% num 36))))))
 
 (defun message-make-organization ()
   "Make an Organization header."
   (let* ((organization
-	  (when message-user-organization
-	    (if (functionp message-user-organization)
-		(funcall message-user-organization)
-	      message-user-organization))))
+      (when message-user-organization
+        (if (functionp message-user-organization)
+        (funcall message-user-organization)
+          message-user-organization))))
     (with-temp-buffer
       (mm-enable-multibyte)
       (cond ((stringp organization)
-	     (insert organization))
-	    ((and (eq t organization)
-		  message-user-organization-file
-		  (file-exists-p message-user-organization-file))
-	     (insert-file-contents message-user-organization-file)))
+         (insert organization))
+        ((and (eq t organization)
+          message-user-organization-file
+          (file-exists-p message-user-organization-file))
+         (insert-file-contents message-user-organization-file)))
       (goto-char (point-min))
       (while (re-search-forward "[\t\n]+" nil t)
-	(replace-match "" t t))
+    (replace-match "" t t))
       (unless (zerop (buffer-size))
-	(buffer-string)))))
+    (buffer-string)))))
 
 (defun message-make-lines ()
   "Count the number of lines and return numeric string."
@@ -5629,27 +5629,27 @@ In posting styles use `(\"Expires\" (make-expires-date 30))'."
   "Return the References header for this message."
   (when message-reply-headers
     (let ((message-id (mail-header-id message-reply-headers))
-	  (references (mail-header-references message-reply-headers)))
+      (references (mail-header-references message-reply-headers)))
       (if (or references message-id)
-	  (concat (or references "") (and references " ")
-		  (or message-id ""))
-	nil))))
+      (concat (or references "") (and references " ")
+          (or message-id ""))
+    nil))))
 
 (defun message-make-in-reply-to ()
   "Return the In-Reply-To header for this message."
   (when message-reply-headers
     (let ((from (mail-header-from message-reply-headers))
-	  (date (mail-header-date message-reply-headers))
-	  (msg-id (mail-header-id message-reply-headers)))
+      (date (mail-header-date message-reply-headers))
+      (msg-id (mail-header-id message-reply-headers)))
       (when from
-	(let ((name (mail-extract-address-components from)))
-	  (concat
-	   msg-id (if msg-id " (")
-	   (if (car name)
-	       (if (string-match "[^\000-\177]" (car name))
-		   ;; Quote a string containing non-ASCII characters.
-		   ;; It will make the RFC2047 encoder cause an error
-		   ;; if there are special characters.
+    (let ((name (mail-extract-address-components from)))
+      (concat
+       msg-id (if msg-id " (")
+       (if (car name)
+           (if (string-match "[^\000-\177]" (car name))
+           ;; Quote a string containing non-ASCII characters.
+           ;; It will make the RFC2047 encoder cause an error
+           ;; if there are special characters.
                    (mm-with-multibyte-buffer
                      (insert (car name))
                      (goto-char (point-min))
@@ -5662,24 +5662,24 @@ In posting styles use `(\"Expires\" (make-expires-date 30))'."
                        (forward-char))
                      ;; Those quotes will be removed by the RFC2047 encoder.
                      (concat "\"" (buffer-string) "\""))
-		 (car name))
-	     (nth 1 name))
-	   "'s message of \""
-	   (if (or (not date) (string= date ""))
-	       "(unknown date)" date)
-	   "\"" (if msg-id ")")))))))
+         (car name))
+         (nth 1 name))
+       "'s message of \""
+       (if (or (not date) (string= date ""))
+           "(unknown date)" date)
+       "\"" (if msg-id ")")))))))
 
 (defun message-make-distribution ()
   "Make a Distribution header."
   (let ((orig-distribution (message-fetch-reply-field "distribution")))
     (cond ((functionp message-distribution-function)
-	   (funcall message-distribution-function))
-	  (t orig-distribution))))
+       (funcall message-distribution-function))
+      (t orig-distribution))))
 
 (defun message-make-expires ()
   "Return an Expires header based on `message-expires'."
   (let ((current (current-time))
-	(future (* 1.0 message-expires 60 60 24)))
+    (future (* 1.0 message-expires 60 60 24)))
     ;; Add the future to current.
     (setcar current (+ (car current) (round (/ future (expt 2 16)))))
     (setcar (cdr current) (+ (nth 1 current) (% (round future) (expt 2 16))))
@@ -5689,66 +5689,66 @@ In posting styles use `(\"Expires\" (make-expires-date 30))'."
   "Return uucp path."
   (let ((login-name (user-login-name)))
     (cond ((null message-user-path)
-	   (concat (system-name) "!" login-name))
-	  ((stringp message-user-path)
-	   ;; Support GENERICPATH.  Suggested by [email-masked].
-	   (concat message-user-path "!" login-name))
-	  (t login-name))))
+       (concat (system-name) "!" login-name))
+      ((stringp message-user-path)
+       ;; Support GENERICPATH.  Suggested by [email-masked].
+       (concat message-user-path "!" login-name))
+      (t login-name))))
 
 (defun message-make-from (&optional name address)
   "Make a From header."
   (let* ((style message-from-style)
-	 (login (or address (message-make-address)))
-	 (fullname (or name user-full-name (user-full-name))))
+     (login (or address (message-make-address)))
+     (fullname (or name user-full-name (user-full-name))))
     (when (string= fullname "&")
       (setq fullname (user-login-name)))
     (with-temp-buffer
       (mm-enable-multibyte)
       (cond
        ((or (null style)
-	    (equal fullname ""))
-	(insert login))
+        (equal fullname ""))
+    (insert login))
        ((or (eq style 'angles)
-	    (and (not (eq style 'parens))
-		 ;; Use angles if no quoting is needed, or if parens would
-		 ;; need quoting too.
-		 (or (not (string-match "[^- !#-'*+/-9=?A-Z^-~]" fullname))
-		     (let ((tmp (concat fullname nil)))
-		       (while (string-match "([^()]*)" tmp)
-			 (aset tmp (match-beginning 0) ?-)
-			 (aset tmp (1- (match-end 0)) ?-))
-		       (string-match "[\\()]" tmp)))))
-	(insert fullname)
-	(goto-char (point-min))
-	;; Look for a character that cannot appear unquoted
-	;; according to RFC 822.
-	(when (re-search-forward "[^- !#-'*+/-9=?A-Z^-~]" nil 1)
-	  ;; Quote fullname, escaping specials.
-	  (goto-char (point-min))
-	  (insert "\"")
-	  (while (re-search-forward "[\"\\]" nil 1)
-	    (replace-match "\\\\\\&" t))
-	  (insert "\""))
-	(insert " <" login ">"))
+        (and (not (eq style 'parens))
+         ;; Use angles if no quoting is needed, or if parens would
+         ;; need quoting too.
+         (or (not (string-match "[^- !#-'*+/-9=?A-Z^-~]" fullname))
+             (let ((tmp (concat fullname nil)))
+               (while (string-match "([^()]*)" tmp)
+             (aset tmp (match-beginning 0) ?-)
+             (aset tmp (1- (match-end 0)) ?-))
+               (string-match "[\\()]" tmp)))))
+    (insert fullname)
+    (goto-char (point-min))
+    ;; Look for a character that cannot appear unquoted
+    ;; according to RFC 822.
+    (when (re-search-forward "[^- !#-'*+/-9=?A-Z^-~]" nil 1)
+      ;; Quote fullname, escaping specials.
+      (goto-char (point-min))
+      (insert "\"")
+      (while (re-search-forward "[\"\\]" nil 1)
+        (replace-match "\\\\\\&" t))
+      (insert "\""))
+    (insert " <" login ">"))
        (t				; 'parens or default
-	(insert login " (")
-	(let ((fullname-start (point)))
-	  (insert fullname)
-	  (goto-char fullname-start)
-	  ;; RFC 822 says \ and nonmatching parentheses
-	  ;; must be escaped in comments.
-	  ;; Escape every instance of ()\ ...
-	  (while (re-search-forward "[()\\]" nil 1)
-	    (replace-match "\\\\\\&" t))
-	  ;; ... then undo escaping of matching parentheses,
-	  ;; including matching nested parentheses.
-	  (goto-char fullname-start)
-	  (while (re-search-forward
-		  "\\(\\=\\|[^\\]\\(\\\\\\\\\\)*\\)\\\\(\\(\\([^\\]\\|\\\\\\\\\\)*\\)\\\\)"
-		  nil 1)
-	    (replace-match "\\1(\\3)" t)
-	    (goto-char fullname-start)))
-	(insert ")")))
+    (insert login " (")
+    (let ((fullname-start (point)))
+      (insert fullname)
+      (goto-char fullname-start)
+      ;; RFC 822 says \ and nonmatching parentheses
+      ;; must be escaped in comments.
+      ;; Escape every instance of ()\ ...
+      (while (re-search-forward "[()\\]" nil 1)
+        (replace-match "\\\\\\&" t))
+      ;; ... then undo escaping of matching parentheses,
+      ;; including matching nested parentheses.
+      (goto-char fullname-start)
+      (while (re-search-forward
+          "\\(\\=\\|[^\\]\\(\\\\\\\\\\)*\\)\\\\(\\(\\([^\\]\\|\\\\\\\\\\)*\\)\\\\)"
+          nil 1)
+        (replace-match "\\1(\\3)" t)
+        (goto-char fullname-start)))
+    (insert ")")))
       (buffer-string))))
 
 (defun message-make-sender ()
@@ -5765,55 +5765,55 @@ give as trustworthy answer as possible."
 (defun message-user-mail-address ()
   "Return the pertinent part of `user-mail-address'."
   (when (and user-mail-address
-	     (string-match "@.*\\." user-mail-address))
+         (string-match "@.*\\." user-mail-address))
     (if (string-match " " user-mail-address)
-	(nth 1 (mail-extract-address-components user-mail-address))
+    (nth 1 (mail-extract-address-components user-mail-address))
       user-mail-address)))
 
 (defun message-sendmail-envelope-from ()
   "Return the envelope from."
   (cond ((eq message-sendmail-envelope-from 'header)
-	 (nth 1 (mail-extract-address-components
-		 (message-fetch-field "from"))))
-	((stringp message-sendmail-envelope-from)
-	 message-sendmail-envelope-from)
-	(t
-	 (message-make-address))))
+     (nth 1 (mail-extract-address-components
+         (message-fetch-field "from"))))
+    ((stringp message-sendmail-envelope-from)
+     message-sendmail-envelope-from)
+    (t
+     (message-make-address))))
 
 (defun message-make-fqdn ()
   "Return user's fully qualified domain name."
   (let* ((sysname (system-name))
-	 (user-mail (message-user-mail-address))
-	 (user-domain
-	  (if (and user-mail
-		   (string-match "@\\(.*\\)\\'" user-mail))
-	      (match-string 1 user-mail)))
-	 (case-fold-search t))
+     (user-mail (message-user-mail-address))
+     (user-domain
+      (if (and user-mail
+           (string-match "@\\(.*\\)\\'" user-mail))
+          (match-string 1 user-mail)))
+     (case-fold-search t))
     (cond
      ((and message-user-fqdn
-	   (stringp message-user-fqdn)
-	   (not (string-match message-bogus-system-names message-user-fqdn)))
+       (stringp message-user-fqdn)
+       (not (string-match message-bogus-system-names message-user-fqdn)))
       ;; `message-user-fqdn' seems to be valid
       message-user-fqdn)
      ;; A system name without any dots is unlikely to be a good fully
      ;; qualified domain name.
      ((and (string-match "[.]" sysname)
-	   (not (string-match message-bogus-system-names sysname)))
+       (not (string-match message-bogus-system-names sysname)))
       ;; `system-name' returned the right result.
       sysname)
      ;; Try `mail-host-address'.
      ((and (stringp mail-host-address)
-	   (not (string-match message-bogus-system-names mail-host-address)))
+       (not (string-match message-bogus-system-names mail-host-address)))
       mail-host-address)
      ;; We try `user-mail-address' as a backup.
      ((and user-domain
-	   (stringp user-domain)
-	   (not (string-match message-bogus-system-names user-domain)))
+       (stringp user-domain)
+       (not (string-match message-bogus-system-names user-domain)))
       user-domain)
      ;; Default to this bogus thing.
      (t
       (concat sysname
-	      ".i-did-not-set--mail-host-address--so-tickle-me")))))
+          ".i-did-not-set--mail-host-address--so-tickle-me")))))
 
 (defun message-make-domain ()
   "Return the domain name."
@@ -5827,53 +5827,53 @@ Remove all addresses but the list address from To and Cc headers."
   (let ((listaddr (message-make-mail-followup-to t)))
     (when listaddr
       (save-excursion
-	(message-remove-header "to")
-	(message-remove-header "cc")
-	(message-position-on-field "To" "X-Draft-From")
-	(insert listaddr)))))
+    (message-remove-header "to")
+    (message-remove-header "cc")
+    (message-position-on-field "To" "X-Draft-From")
+    (insert listaddr)))))
 
 (defun message-make-mail-followup-to (&optional only-show-subscribed)
   "Return the Mail-Followup-To header.
 If passed the optional argument ONLY-SHOW-SUBSCRIBED only return the
 subscribed address (and not the additional To and Cc header contents)."
   (let* ((case-fold-search t)
-	 (to (message-fetch-field "To"))
-	 (cc (message-fetch-field "cc"))
-	 (msg-recipients (concat to (and to cc ", ") cc))
-	 (recipients
-	  (mapcar 'mail-strip-quoted-names
-		  (message-tokenize-header msg-recipients)))
-	 (file-regexps
-	  (if message-subscribed-address-file
-	      (let (begin end item re)
-		(save-excursion
-		  (with-temp-buffer
-		    (insert-file-contents message-subscribed-address-file)
-		    (while (not (eobp))
-		      (setq begin (point))
-		      (forward-line 1)
-		      (setq end (point))
-		      (if (bolp) (setq end (1- end)))
-		      (setq item (regexp-quote (buffer-substring begin end)))
-		      (if re (setq re (concat re "\\|" item))
-			(setq re (concat "\\`\\(" item))))
-		    (and re (list (concat re "\\)\\'"))))))))
-	 (mft-regexps (apply 'append message-subscribed-regexps
-			     (mapcar 'regexp-quote
-				     message-subscribed-addresses)
-			     file-regexps
-			     (mapcar 'funcall
-				     message-subscribed-address-functions))))
+     (to (message-fetch-field "To"))
+     (cc (message-fetch-field "cc"))
+     (msg-recipients (concat to (and to cc ", ") cc))
+     (recipients
+      (mapcar 'mail-strip-quoted-names
+          (message-tokenize-header msg-recipients)))
+     (file-regexps
+      (if message-subscribed-address-file
+          (let (begin end item re)
+        (save-excursion
+          (with-temp-buffer
+            (insert-file-contents message-subscribed-address-file)
+            (while (not (eobp))
+              (setq begin (point))
+              (forward-line 1)
+              (setq end (point))
+              (if (bolp) (setq end (1- end)))
+              (setq item (regexp-quote (buffer-substring begin end)))
+              (if re (setq re (concat re "\\|" item))
+            (setq re (concat "\\`\\(" item))))
+            (and re (list (concat re "\\)\\'"))))))))
+     (mft-regexps (apply 'append message-subscribed-regexps
+                 (mapcar 'regexp-quote
+                     message-subscribed-addresses)
+                 file-regexps
+                 (mapcar 'funcall
+                     message-subscribed-address-functions))))
     (save-match-data
       (let ((list
-	     (cl-loop for recipient in recipients
-	              when (cl-loop for regexp in mft-regexps
-		                    thereis (string-match regexp recipient))
-	              return recipient)))
-	(when list
-	  (if only-show-subscribed
-	      list
-	    msg-recipients))))))
+         (cl-loop for recipient in recipients
+                  when (cl-loop for regexp in mft-regexps
+                            thereis (string-match regexp recipient))
+                  return recipient)))
+    (when list
+      (if only-show-subscribed
+          list
+        msg-recipients))))))
 
 (defun message-idna-to-ascii-rhs-1 (header)
   "Interactively potentially IDNA encode domain names in HEADER."
@@ -5881,30 +5881,30 @@ subscribed address (and not the additional To and Cc header contents)."
         ace)
     (when field
       (dolist (rhs
-	       (delete-dups
-		(mapcar (lambda (rhs) (or (cadr (split-string rhs "@")) ""))
-			(mapcar 'downcase
-				(mapcar
-				 (lambda (elem)
-				   (or (cadr elem)
-				       ""))
-				 (mail-extract-address-components field t))))))
-	;; Note that `rhs' will be "" if the address does not have
-	;; the domain part, i.e., if it is a local user's address.
-	(setq ace (if (string-match "\\`[[:ascii:]]*\\'" rhs)
-		      rhs
-		    (downcase (puny-encode-domain rhs))))
-	(when (and (not (equal rhs ace))
-		   (or (not (eq message-use-idna 'ask))
-		       (y-or-n-p (format "Replace %s with %s in %s:? "
-					 rhs ace header))))
-	  (goto-char (point-min))
-	  (while (re-search-forward (concat "^" header ":") nil t)
-	    (message-narrow-to-field)
-	    (while (search-forward (concat "@" rhs) nil t)
-	      (replace-match (concat "@" ace) t t))
-	    (goto-char (point-max))
-	    (widen)))))))
+           (delete-dups
+        (mapcar (lambda (rhs) (or (cadr (split-string rhs "@")) ""))
+            (mapcar 'downcase
+                (mapcar
+                 (lambda (elem)
+                   (or (cadr elem)
+                       ""))
+                 (mail-extract-address-components field t))))))
+    ;; Note that `rhs' will be "" if the address does not have
+    ;; the domain part, i.e., if it is a local user's address.
+    (setq ace (if (string-match "\\`[[:ascii:]]*\\'" rhs)
+              rhs
+            (downcase (puny-encode-domain rhs))))
+    (when (and (not (equal rhs ace))
+           (or (not (eq message-use-idna 'ask))
+               (y-or-n-p (format "Replace %s with %s in %s:? "
+                     rhs ace header))))
+      (goto-char (point-min))
+      (while (re-search-forward (concat "^" header ":") nil t)
+        (message-narrow-to-field)
+        (while (search-forward (concat "@" rhs) nil t)
+          (replace-match (concat "@" ace) t t))
+        (goto-char (point-max))
+        (widen)))))))
 
 (defun message-idna-to-ascii-rhs ()
   "Possibly IDNA encode non-ASCII domain names in From:, To: and Cc: headers.
@@ -5913,19 +5913,19 @@ See `message-idna-encode'."
   (when message-use-idna
     (save-excursion
       (save-restriction
-	;; `message-narrow-to-head' that recognizes only the first empty
-	;; line as the message header separator used to be used here.
-	;; However, since there is the "--text follows this line--" line
-	;; normally, it failed in narrowing to the headers and potentially
-	;; caused the IDNA encoding on lines that look like headers in
-	;; the message body.
-	(message-narrow-to-headers-or-head)
-	(message-idna-to-ascii-rhs-1 "From")
-	(message-idna-to-ascii-rhs-1 "To")
-	(message-idna-to-ascii-rhs-1 "Reply-To")
-	(message-idna-to-ascii-rhs-1 "Mail-Reply-To")
-	(message-idna-to-ascii-rhs-1 "Mail-Followup-To")
-	(message-idna-to-ascii-rhs-1 "Cc")))))
+    ;; `message-narrow-to-head' that recognizes only the first empty
+    ;; line as the message header separator used to be used here.
+    ;; However, since there is the "--text follows this line--" line
+    ;; normally, it failed in narrowing to the headers and potentially
+    ;; caused the IDNA encoding on lines that look like headers in
+    ;; the message body.
+    (message-narrow-to-headers-or-head)
+    (message-idna-to-ascii-rhs-1 "From")
+    (message-idna-to-ascii-rhs-1 "To")
+    (message-idna-to-ascii-rhs-1 "Reply-To")
+    (message-idna-to-ascii-rhs-1 "Mail-Reply-To")
+    (message-idna-to-ascii-rhs-1 "Mail-Followup-To")
+    (message-idna-to-ascii-rhs-1 "Cc")))))
 
 (defun message-generate-headers (headers)
   "Prepare article HEADERS.
@@ -5934,155 +5934,155 @@ Headers already prepared in the buffer are not modified."
   (save-restriction
     (message-narrow-to-headers)
     (let* ((header-values
-	    (list 'Date (message-make-date)
-		  'Message-ID (message-make-message-id)
-		  'Organization (message-make-organization)
-		  'From (message-make-from)
-		  'Path (message-make-path)
-		  'Subject nil
-		  'Newsgroups nil
-		  'In-Reply-To (message-make-in-reply-to)
-		  'References (message-make-references)
-		  'To nil
-		  'Distribution (message-make-distribution)
-		  'Lines (message-make-lines)
-		  'User-Agent message-newsreader
-		  'Expires (message-make-expires)))
-	   (case-fold-search t)
-	   (optionalp nil)
-	   header value elem header-string)
+        (list 'Date (message-make-date)
+          'Message-ID (message-make-message-id)
+          'Organization (message-make-organization)
+          'From (message-make-from)
+          'Path (message-make-path)
+          'Subject nil
+          'Newsgroups nil
+          'In-Reply-To (message-make-in-reply-to)
+          'References (message-make-references)
+          'To nil
+          'Distribution (message-make-distribution)
+          'Lines (message-make-lines)
+          'User-Agent message-newsreader
+          'Expires (message-make-expires)))
+       (case-fold-search t)
+       (optionalp nil)
+       header value elem header-string)
       ;; First we remove any old generated headers.
       (let ((headers message-deletable-headers))
-	(unless (buffer-modified-p)
-	  (setq headers (delq 'Message-ID (copy-sequence headers))))
-	(while headers
-	  (goto-char (point-min))
-	  (and (re-search-forward
-		(concat "^" (symbol-name (car headers)) ": *") nil t)
-	       (get-text-property (1+ (match-beginning 0)) 'message-deletable)
-	       (message-delete-line))
-	  (pop headers)))
+    (unless (buffer-modified-p)
+      (setq headers (delq 'Message-ID (copy-sequence headers))))
+    (while headers
+      (goto-char (point-min))
+      (and (re-search-forward
+        (concat "^" (symbol-name (car headers)) ": *") nil t)
+           (get-text-property (1+ (match-beginning 0)) 'message-deletable)
+           (message-delete-line))
+      (pop headers)))
       ;; Go through all the required headers and see if they are in the
       ;; articles already.  If they are not, or are empty, they are
       ;; inserted automatically - except for Subject, Newsgroups and
       ;; Distribution.
       (while headers
-	(goto-char (point-min))
-	(setq elem (pop headers))
-	(if (consp elem)
-	    (if (eq (car elem) 'optional)
-		(setq header (cdr elem)
-		      optionalp t)
-	      (setq header (car elem)))
-	  (setq header elem))
-	(setq header-string  (if (stringp header)
-				 header
-			       (symbol-name header)))
-	(when (or (not (re-search-forward
-			(concat "^"
-				(regexp-quote (downcase header-string))
-				":")
-			nil t))
-		  (progn
-		    ;; The header was found.  We insert a space after the
-		    ;; colon, if there is none.
-		    (if (/= (char-after) ? ) (insert " ") (forward-char 1))
-		    ;; Find out whether the header is empty.
-		    (looking-at "[ \t]*\n[^ \t]")))
-	  ;; So we find out what value we should insert.
-	  (setq value
-		(cond
-		 ((and (consp elem)
-		       (eq (car elem) 'optional)
-		       (not (member header-string message-inserted-headers)))
-		  ;; This is an optional header.  If the cdr of this
-		  ;; is something that is nil, then we do not insert
-		  ;; this header.
-		  (setq header (cdr elem))
-		  (or (and (functionp (cdr elem))
-			   (funcall (cdr elem)))
-		      (and (symbolp (cdr elem))
-			   (plist-get header-values (cdr elem)))))
-		 ((consp elem)
-		  ;; The element is a cons.  Either the cdr is a
-		  ;; string to be inserted verbatim, or it is a
-		  ;; function, and we insert the value returned from
-		  ;; this function.
-		  (or (and (stringp (cdr elem))
-			   (cdr elem))
-		      (and (functionp (cdr elem))
-			   (funcall (cdr elem)))))
-		 ((and (symbolp header)
-		       (plist-member header-values header))
-		  ;; The element is a symbol.  We insert the value of
-		  ;; this symbol, if any.
-		  (plist-get header-values header))
-		 ((not (message-check-element
-			(intern (downcase (symbol-name header)))))
-		  ;; We couldn't generate a value for this header,
-		  ;; so we just ask the user.
-		  (read-from-minibuffer
-		   (format "Empty header for %s; enter value: " header)))))
-	  ;; Finally insert the header.
-	  (when (and value
-		     (not (equal value "")))
-	    (save-excursion
-	      (if (bolp)
-		  (progn
-		    ;; This header didn't exist, so we insert it.
-		    (goto-char (point-max))
-		    (let ((formatter
-			   (cdr (assq header message-header-format-alist))))
-		      (if formatter
-			  (funcall formatter header value)
-			(insert header-string ": " value))
-		      (push header-string message-inserted-headers)
-		      (goto-char (message-fill-field))
-		      ;; We check whether the value was ended by a
-		      ;; newline.  If not, we insert one.
-		      (unless (bolp)
-			(insert "\n"))
-		      (forward-line -1)))
-		;; The value of this header was empty, so we clear
-		;; totally and insert the new value.
-		(delete-region (point) (point-at-eol))
-		;; If the header is optional, and the header was
-		;; empty, we can't insert it anyway.
-		(unless optionalp
-		  (push header-string message-inserted-headers)
-		  (insert value)
-		  (message-fill-field)))
-	      ;; Add the deletable property to the headers that require it.
-	      (and (memq header message-deletable-headers)
-		   (progn (beginning-of-line) (looking-at "[^:]+: "))
-		   (add-text-properties
-		    (point) (match-end 0)
-		    '(message-deletable t face italic) (current-buffer)))))))
+    (goto-char (point-min))
+    (setq elem (pop headers))
+    (if (consp elem)
+        (if (eq (car elem) 'optional)
+        (setq header (cdr elem)
+              optionalp t)
+          (setq header (car elem)))
+      (setq header elem))
+    (setq header-string  (if (stringp header)
+                 header
+                   (symbol-name header)))
+    (when (or (not (re-search-forward
+            (concat "^"
+                (regexp-quote (downcase header-string))
+                ":")
+            nil t))
+          (progn
+            ;; The header was found.  We insert a space after the
+            ;; colon, if there is none.
+            (if (/= (char-after) ? ) (insert " ") (forward-char 1))
+            ;; Find out whether the header is empty.
+            (looking-at "[ \t]*\n[^ \t]")))
+      ;; So we find out what value we should insert.
+      (setq value
+        (cond
+         ((and (consp elem)
+               (eq (car elem) 'optional)
+               (not (member header-string message-inserted-headers)))
+          ;; This is an optional header.  If the cdr of this
+          ;; is something that is nil, then we do not insert
+          ;; this header.
+          (setq header (cdr elem))
+          (or (and (functionp (cdr elem))
+               (funcall (cdr elem)))
+              (and (symbolp (cdr elem))
+               (plist-get header-values (cdr elem)))))
+         ((consp elem)
+          ;; The element is a cons.  Either the cdr is a
+          ;; string to be inserted verbatim, or it is a
+          ;; function, and we insert the value returned from
+          ;; this function.
+          (or (and (stringp (cdr elem))
+               (cdr elem))
+              (and (functionp (cdr elem))
+               (funcall (cdr elem)))))
+         ((and (symbolp header)
+               (plist-member header-values header))
+          ;; The element is a symbol.  We insert the value of
+          ;; this symbol, if any.
+          (plist-get header-values header))
+         ((not (message-check-element
+            (intern (downcase (symbol-name header)))))
+          ;; We couldn't generate a value for this header,
+          ;; so we just ask the user.
+          (read-from-minibuffer
+           (format "Empty header for %s; enter value: " header)))))
+      ;; Finally insert the header.
+      (when (and value
+             (not (equal value "")))
+        (save-excursion
+          (if (bolp)
+          (progn
+            ;; This header didn't exist, so we insert it.
+            (goto-char (point-max))
+            (let ((formatter
+               (cdr (assq header message-header-format-alist))))
+              (if formatter
+              (funcall formatter header value)
+            (insert header-string ": " value))
+              (push header-string message-inserted-headers)
+              (goto-char (message-fill-field))
+              ;; We check whether the value was ended by a
+              ;; newline.  If not, we insert one.
+              (unless (bolp)
+            (insert "\n"))
+              (forward-line -1)))
+        ;; The value of this header was empty, so we clear
+        ;; totally and insert the new value.
+        (delete-region (point) (point-at-eol))
+        ;; If the header is optional, and the header was
+        ;; empty, we can't insert it anyway.
+        (unless optionalp
+          (push header-string message-inserted-headers)
+          (insert value)
+          (message-fill-field)))
+          ;; Add the deletable property to the headers that require it.
+          (and (memq header message-deletable-headers)
+           (progn (beginning-of-line) (looking-at "[^:]+: "))
+           (add-text-properties
+            (point) (match-end 0)
+            '(message-deletable t face italic) (current-buffer)))))))
       ;; Insert new Sender if the From is strange.
       (let ((from (message-fetch-field "from"))
-	    (sender (message-fetch-field "sender"))
-	    (secure-sender (message-make-sender)))
-	(when (and from
-		   (not (message-check-element 'sender))
-		   (not (string=
-			 (downcase
-			  (cadr (mail-extract-address-components from)))
-			 (downcase secure-sender)))
-		   (or (null sender)
-		       (not
-			(string=
-			 (downcase
-			  (cadr (mail-extract-address-components sender)))
-			 (downcase secure-sender)))))
-	  (goto-char (point-min))
-	  ;; Rename any old Sender headers to Original-Sender.
-	  (when (re-search-forward "^\\(Original-\\)*Sender:" nil t)
-	    (beginning-of-line)
-	    (insert "Original-")
-	    (beginning-of-line))
-	  (when (or (message-news-p)
-		    (string-match "@.+\\.." secure-sender))
-	    (insert "Sender: " secure-sender "\n"))))
+        (sender (message-fetch-field "sender"))
+        (secure-sender (message-make-sender)))
+    (when (and from
+           (not (message-check-element 'sender))
+           (not (string=
+             (downcase
+              (cadr (mail-extract-address-components from)))
+             (downcase secure-sender)))
+           (or (null sender)
+               (not
+            (string=
+             (downcase
+              (cadr (mail-extract-address-components sender)))
+             (downcase secure-sender)))))
+      (goto-char (point-min))
+      ;; Rename any old Sender headers to Original-Sender.
+      (when (re-search-forward "^\\(Original-\\)*Sender:" nil t)
+        (beginning-of-line)
+        (insert "Original-")
+        (beginning-of-line))
+      (when (or (message-news-p)
+            (string-match "@.+\\.." secure-sender))
+        (insert "Sender: " secure-sender "\n"))))
       ;; Check for IDNA
       (message-idna-to-ascii-rhs))))
 
@@ -6091,17 +6091,17 @@ Headers already prepared in the buffer are not modified."
   (let (newsgroups)
     (save-excursion
       (save-restriction
-	(message-narrow-to-headers)
-	(when (setq newsgroups (message-fetch-field "newsgroups"))
-	  (goto-char (point-max))
-	  (insert "Posted-To: " newsgroups "\n")))
+    (message-narrow-to-headers)
+    (when (setq newsgroups (message-fetch-field "newsgroups"))
+      (goto-char (point-max))
+      (insert "Posted-To: " newsgroups "\n")))
       (forward-line 1)
       (when message
-	(cond
-	 ((string-match "%s" message)
-	  (insert (format message newsgroups)))
-	 (t
-	  (insert message)))))))
+    (cond
+     ((string-match "%s" message)
+      (insert (format message newsgroups)))
+     (t
+      (insert message)))))))
 
 ;;;
 ;;; Setting up a message buffer
@@ -6109,19 +6109,19 @@ Headers already prepared in the buffer are not modified."
 
 (defun message-skip-to-next-address ()
   (let ((end (save-excursion
-	       (message-next-header)
-	       (point)))
-	quoted char)
+           (message-next-header)
+           (point)))
+    quoted char)
     (when (looking-at ",")
       (forward-char 1))
     (while (and (not (= (point) end))
-		(or (not (eq char ?,))
-		    quoted))
+        (or (not (eq char ?,))
+            quoted))
       (skip-chars-forward "^,\"" end)
       (when (eq (setq char (following-char)) ?\")
-	(setq quoted (not quoted)))
+    (setq quoted (not quoted)))
       (unless (= (point) end)
-	(forward-char 1)))
+    (forward-char 1)))
     (skip-chars-forward " \t\n")))
 
 (defun message-split-line ()
@@ -6132,8 +6132,8 @@ If the current line has `message-yank-prefix', insert it on the new line."
 
 (defun message-insert-header (header value)
   (insert (capitalize (symbol-name header))
-	  ": "
-	  (if (consp value) (car value) value)))
+      ": "
+      (if (consp value) (car value) value)))
 
 (defun message-field-name ()
   (save-excursion
@@ -6146,8 +6146,8 @@ If the current line has `message-yank-prefix', insert it on the new line."
     (save-restriction
       (message-narrow-to-field)
       (let ((field-name (message-field-name)))
-	(funcall (or (cadr (assq field-name message-field-fillers))
-		     'message-fill-field-general)))
+    (funcall (or (cadr (assq field-name message-field-fillers))
+             'message-fill-field-general)))
       (point-max))))
 
 (defun message-fill-field-address ()
@@ -6155,25 +6155,25 @@ If the current line has `message-yank-prefix', insert it on the new line."
     (while (not end)
       (message-skip-to-next-address)
       (cond ((bolp)
-	     (end-of-line 0)
-	     (setq end 1))
-	    ((eobp)
-	     (setq end 0)))
+         (end-of-line 0)
+         (setq end 1))
+        ((eobp)
+         (setq end 0)))
       (when (and (> (current-column) 78)
-		 last)
-	(save-excursion
-	  (goto-char last)
-	  (delete-char (- (skip-chars-backward " \t")))
-	  (insert "\n\t")))
+         last)
+    (save-excursion
+      (goto-char last)
+      (delete-char (- (skip-chars-backward " \t")))
+      (insert "\n\t")))
       (setq last (point)))
     (forward-line end)))
 
 (defun message-fill-field-general ()
   (let ((begin (point))
-	(fill-column 78)
-	(fill-prefix "\t"))
+    (fill-column 78)
+    (fill-prefix "\t"))
     (while (and (search-forward "\n" nil t)
-		(not (eobp)))
+        (not (eobp)))
       (replace-match " " t t))
     (fill-region-as-paragraph begin (point-max))
     ;; Tapdance around looong Message-IDs.
@@ -6189,7 +6189,7 @@ If the current line has `message-yank-prefix', insert it on the new line."
 (defun message-shorten-1 (list cut surplus)
   "Cut SURPLUS elements out of LIST, beginning with CUTth one."
   (setcdr (nthcdr (- cut 2) list)
-	  (nthcdr (+ (- cut 2) surplus 1) list)))
+      (nthcdr (+ (- cut 2) surplus 1) list)))
 
 (defun message-shorten-references (header references)
   "Trim REFERENCES to be 21 Message-ID long or less, and fold them.
@@ -6198,9 +6198,9 @@ than 988 characters long, and if they are not, trim them until
 they are."
   ;; 21 is the number suggested by USAGE.
   (let ((maxcount 21)
-	(count 0)
-	(cut 2)
-	refs)
+    (count 0)
+    (cut 2)
+    refs)
     (with-temp-buffer
       (insert references)
       (goto-char (point-min))
@@ -6208,17 +6208,17 @@ they are."
       ;; with whitespace or missing brackets (7.a "Does not propagate broken
       ;; Message-IDs in original References").
       (while (re-search-forward "<[^ <]+@[^ <]+>" nil t)
-	(push (match-string 0) refs))
+    (push (match-string 0) refs))
       (setq refs (nreverse refs)
-	    count (length refs)))
+        count (length refs)))
 
     ;; If the list has more than MAXCOUNT elements, trim it by
     ;; removing the CUTth element and the required number of
     ;; elements that follow.
     (when (> count maxcount)
       (let ((surplus (- count maxcount)))
-	(message-shorten-1 refs cut surplus)
-	(cl-decf count surplus)))
+    (message-shorten-1 refs cut surplus)
+    (cl-decf count surplus)))
 
     ;; When sending via news, make sure the total folded length will
     ;; be less than 998 characters.  This is to cater to broken INN
@@ -6232,11 +6232,11 @@ they are."
     ;; message-this-is-news directly.
     (when message-this-is-news
       (while (< 998
-		(with-temp-buffer
-		  (message-insert-header
-		   header (mapconcat #'identity refs " "))
-		  (buffer-size)))
-	(message-shorten-1 refs cut 1)))
+        (with-temp-buffer
+          (message-insert-header
+           header (mapconcat #'identity refs " "))
+          (buffer-size)))
+    (message-shorten-1 refs cut 1)))
     ;; Finally, collect the references back into a string and insert
     ;; it into the buffer.
     (message-insert-header header (mapconcat #'identity refs " "))))
@@ -6250,7 +6250,7 @@ they are."
     (widen)
     (forward-char 1)
     (if (eq (char-after) ? )
-	(forward-char 1)
+    (forward-char 1)
       (insert " ")))
    (t
     (goto-char (point-max))
@@ -6346,13 +6346,13 @@ moved to the beginning "
    ((memq message-generate-new-buffers '(unique t))
     (generate-new-buffer-name
      (concat "*" type
-	     (if to
-		 (concat " to "
-			 (or (car (mail-extract-address-components to))
-			     to) "")
-	       "")
-	     (if (and group (not (string= group ""))) (concat " on " group) "")
-	     "*")))
+         (if to
+         (concat " to "
+             (or (car (mail-extract-address-components to))
+                 to) "")
+           "")
+         (if (and group (not (string= group ""))) (concat " on " group) "")
+         "*")))
    ;; Check whether `message-generate-new-buffers' is a function,
    ;; and if so, call it.
    ((functionp message-generate-new-buffers)
@@ -6360,62 +6360,62 @@ moved to the beginning "
    ((eq message-generate-new-buffers 'unsent)
     (generate-new-buffer-name
      (concat "*unsent " type
-	     (if to
-		 (concat " to "
-			 (or (car (mail-extract-address-components to))
-			     to) "")
-	       "")
-	     (if (and group (not (string= group ""))) (concat " on " group) "")
-	     "*")))
+         (if to
+         (concat " to "
+             (or (car (mail-extract-address-components to))
+                 to) "")
+           "")
+         (if (and group (not (string= group ""))) (concat " on " group) "")
+         "*")))
    ;; Search for the existing message buffer with the specified name.
    (t
     (let* ((new (if (eq message-generate-new-buffers 'standard)
-		    (generate-new-buffer-name (concat "*" type " message*"))
-		  (let ((message-generate-new-buffers 'unique))
-		    (message-buffer-name type to group))))
-	   (regexp (concat "\\`"
-			   (regexp-quote
-			    (if (string-match "<[0-9]+>\\'" new)
-				(substring new 0 (match-beginning 0))
-			      new))
-			   "\\(?:<\\([0-9]+\\)>\\)?\\'"))
-	   (case-fold-search nil))
+            (generate-new-buffer-name (concat "*" type " message*"))
+          (let ((message-generate-new-buffers 'unique))
+            (message-buffer-name type to group))))
+       (regexp (concat "\\`"
+               (regexp-quote
+                (if (string-match "<[0-9]+>\\'" new)
+                (substring new 0 (match-beginning 0))
+                  new))
+               "\\(?:<\\([0-9]+\\)>\\)?\\'"))
+       (case-fold-search nil))
       (or (cdar
-	   (last
-	    (sort
-	     (delq nil
-		   (mapcar
-		    (lambda (b)
-		      (when (and (string-match regexp (setq b (buffer-name b)))
-				 (eq (with-current-buffer b major-mode)
-				     'message-mode))
-			(cons (string-to-number (or (match-string 1 b) "1"))
-			      b)))
-		    (buffer-list)))
-	     'car-less-than-car)))
-	  new)))))
+       (last
+        (sort
+         (delq nil
+           (mapcar
+            (lambda (b)
+              (when (and (string-match regexp (setq b (buffer-name b)))
+                 (eq (with-current-buffer b major-mode)
+                     'message-mode))
+            (cons (string-to-number (or (match-string 1 b) "1"))
+                  b)))
+            (buffer-list)))
+         'car-less-than-car)))
+      new)))))
 
 (defun message-pop-to-buffer (name &optional switch-function)
   "Pop to buffer NAME, and warn if it already exists and is modified."
   (let ((buffer (get-buffer name)))
     (if (and buffer
-	     (buffer-name buffer))
-	(let ((window (get-buffer-window buffer 0)))
-	  (if window
-	      ;; Raise the frame already displaying the message buffer.
-	      (progn
-		(select-frame-set-input-focus (window-frame window))
-		(select-window window))
-	    (funcall (or switch-function #'pop-to-buffer) buffer)
-	    (set-buffer buffer))
-	  (when (and (buffer-modified-p)
-		     (not (prog1
-			      (y-or-n-p
-			       "Message already being composed; erase? ")
-			    (message nil))))
-	    (error "Message being composed")))
+         (buffer-name buffer))
+    (let ((window (get-buffer-window buffer 0)))
+      (if window
+          ;; Raise the frame already displaying the message buffer.
+          (progn
+        (select-frame-set-input-focus (window-frame window))
+        (select-window window))
+        (funcall (or switch-function #'pop-to-buffer) buffer)
+        (set-buffer buffer))
+      (when (and (buffer-modified-p)
+             (not (prog1
+                  (y-or-n-p
+                   "Message already being composed; erase? ")
+                (message nil))))
+        (error "Message being composed")))
       (funcall (or switch-function 'pop-to-buffer-same-window)
-	       name)
+           name)
       (set-buffer name))
     (erase-buffer)
     (message-mode)))
@@ -6426,13 +6426,13 @@ moved to the beginning "
   ;; list of buffers.
   (setq message-buffer-list (delq (current-buffer) message-buffer-list))
   (while (and message-max-buffers
-	      message-buffer-list
-	      (>= (length message-buffer-list) message-max-buffers))
+          message-buffer-list
+          (>= (length message-buffer-list) message-max-buffers))
     ;; Kill the oldest buffer -- unless it has been changed.
     (let ((buffer (pop message-buffer-list)))
       (when (and (buffer-name buffer)
-		 (not (buffer-modified-p buffer)))
-	(kill-buffer buffer))))
+         (not (buffer-modified-p buffer)))
+    (kill-buffer buffer))))
   ;; Rename the buffer.
   (if message-send-rename-function
       (funcall message-send-rename-function)
@@ -6440,72 +6440,72 @@ moved to the beginning "
   ;; Push the current buffer onto the list.
   (when message-max-buffers
     (setq message-buffer-list
-	  (nconc message-buffer-list (list (current-buffer))))))
+      (nconc message-buffer-list (list (current-buffer))))))
 
 (defun message-default-send-rename-function ()
   ;; Note: mail-abbrevs of XEmacs renames buffer name behind Gnus.
   (when (string-match
-	 "\\`\\*\\(sent \\|unsent \\)?\\(.+\\)\\*[^\\*]*\\|\\`mail to "
-	 (buffer-name))
+     "\\`\\*\\(sent \\|unsent \\)?\\(.+\\)\\*[^\\*]*\\|\\`mail to "
+     (buffer-name))
     (let ((name (match-string 2 (buffer-name)))
-	  to group)
+      to group)
       (if (not (or (null name)
-		   (string-equal name "mail")
-		   (string-equal name "posting")))
-	  (setq name (concat "*sent " name "*"))
-	(message-narrow-to-headers)
-	(setq to (message-fetch-field "to"))
-	(setq group (message-fetch-field "newsgroups"))
-	(widen)
-	(setq name
-	      (cond
-	       (to (concat "*sent mail to "
-			   (or (car (mail-extract-address-components to))
-			       to) "*"))
-	       ((and group (not (string= group "")))
-		(concat "*sent posting on " group "*"))
-	       (t "*sent mail*"))))
+           (string-equal name "mail")
+           (string-equal name "posting")))
+      (setq name (concat "*sent " name "*"))
+    (message-narrow-to-headers)
+    (setq to (message-fetch-field "to"))
+    (setq group (message-fetch-field "newsgroups"))
+    (widen)
+    (setq name
+          (cond
+           (to (concat "*sent mail to "
+               (or (car (mail-extract-address-components to))
+                   to) "*"))
+           ((and group (not (string= group "")))
+        (concat "*sent posting on " group "*"))
+           (t "*sent mail*"))))
       (unless (string-equal name (buffer-name))
-	(rename-buffer name t)))))
+    (rename-buffer name t)))))
 
 (defun message-mail-user-agent ()
   (let ((mua (cond
-	      ((not message-mail-user-agent) nil)
-	      ((eq message-mail-user-agent t) mail-user-agent)
-	      (t message-mail-user-agent))))
+          ((not message-mail-user-agent) nil)
+          ((eq message-mail-user-agent t) mail-user-agent)
+          (t message-mail-user-agent))))
     (if (memq mua '(message-user-agent gnus-user-agent))
-	nil
+    nil
       mua)))
 
 ;; YANK-ACTION, if non-nil, can be a buffer or a yank action of the
 ;; form (FUNCTION . ARGS).
 (defun message-setup (headers &optional yank-action actions
-			      continue switch-function return-action)
+                  continue switch-function return-action)
   (let ((mua (message-mail-user-agent))
-	subject to field)
+    subject to field)
     (if (not (and message-this-is-mail mua))
-	(message-setup-1 headers yank-action actions return-action)
+    (message-setup-1 headers yank-action actions return-action)
       (setq headers (copy-sequence headers))
       (setq field (assq 'Subject headers))
       (when field
-	(setq subject (cdr field))
-	(setq headers (delq field headers)))
+    (setq subject (cdr field))
+    (setq headers (delq field headers)))
       (setq field (assq 'To headers))
       (when field
-	(setq to (cdr field))
-	(setq headers (delq field headers)))
+    (setq to (cdr field))
+    (setq headers (delq field headers)))
       (let ((mail-user-agent mua))
-	(compose-mail to subject
-		      (mapcar (lambda (item)
-				(cons
-				 (format "%s" (car item))
-				 (cdr item)))
-			      headers)
-		      continue switch-function
-		      (if (bufferp yank-action)
-			  (list 'insert-buffer yank-action)
-			yank-action)
-		      actions)))))
+    (compose-mail to subject
+              (mapcar (lambda (item)
+                (cons
+                 (format "%s" (car item))
+                 (cdr item)))
+                  headers)
+              continue switch-function
+              (if (bufferp yank-action)
+              (list 'insert-buffer yank-action)
+            yank-action)
+              actions)))))
 
 (defun message-headers-to-generate (headers included-headers excluded-headers)
   "Return a list that includes all headers from HEADERS.
@@ -6513,44 +6513,44 @@ If INCLUDED-HEADERS is a list, just include those headers.  If it is
 t, include all headers.  In any case, headers from EXCLUDED-HEADERS
 are not included."
   (let ((result nil)
-	header-name)
+    header-name)
     (dolist (header headers)
       (setq header-name (cond
-			 ((and (consp header)
-			       (eq (car header) 'optional))
-			  ;; On the form (optional . Header)
-			  (cdr header))
-			 ((consp header)
-			  ;; On the form (Header . function)
-			  (car header))
-			 (t
-			  ;; Just a Header.
-			  header)))
+             ((and (consp header)
+                   (eq (car header) 'optional))
+              ;; On the form (optional . Header)
+              (cdr header))
+             ((consp header)
+              ;; On the form (Header . function)
+              (car header))
+             (t
+              ;; Just a Header.
+              header)))
       (when (and (not (memq header-name excluded-headers))
-		 (or (eq included-headers t)
-		     (memq header-name included-headers)))
-	(push header result)))
+         (or (eq included-headers t)
+             (memq header-name included-headers)))
+    (push header result)))
     (nreverse result)))
 
 (defun message-setup-1 (headers &optional yank-action actions return-action)
   (dolist (action actions)
     (condition-case nil
-	(add-to-list 'message-send-actions
-		     `(apply ',(car action) ',(cdr action)))))
+    (add-to-list 'message-send-actions
+             `(apply ',(car action) ',(cdr action)))))
   (setq message-return-action return-action)
   (setq message-reply-buffer
-	(if (and (consp yank-action)
-		 (eq (car yank-action) 'insert-buffer))
-	    (nth 1 yank-action)
-	  yank-action))
+    (if (and (consp yank-action)
+         (eq (car yank-action) 'insert-buffer))
+        (nth 1 yank-action)
+      yank-action))
   (goto-char (point-min))
   ;; Insert all the headers.
   (mail-header-format
    (let ((h headers)
-	 (alist message-header-format-alist))
+     (alist message-header-format-alist))
      (while h
        (unless (assq (caar h) message-header-format-alist)
-	 (push (list (caar h)) alist))
+     (push (list (caar h)) alist))
        (pop h))
      alist)
    headers)
@@ -6607,7 +6607,7 @@ are not included."
     (save-restriction
       (message-narrow-to-headers)
       (if message-alternative-emails
-	  (message-use-alternative-email-as-from))))
+      (message-use-alternative-email-as-from))))
   (message-position-point)
   ;; Allow correct handling of `message-checksum' in `message-yank-original':
   (set-buffer-modified-p nil)
@@ -6619,11 +6619,11 @@ are not included."
   "Associate the message buffer with a file in the drafts directory."
   (when message-auto-save-directory
     (unless (file-directory-p
-	     (directory-file-name message-auto-save-directory))
+         (directory-file-name message-auto-save-directory))
       (make-directory message-auto-save-directory t))
     (if (gnus-alive-p)
-	(setq message-draft-article
-	      (nndraft-request-associate-buffer "drafts"))
+    (setq message-draft-article
+          (nndraft-request-associate-buffer "drafts"))
 
       ;; If Gnus were alive, draft messages would be saved in the drafts folder.
       ;; But Gnus is not alive, so arrange to save the draft message in a
@@ -6632,13 +6632,13 @@ are not included."
       ;; simultaneously without overwriting each other (which mimics the
       ;; functionality of the Gnus drafts folder).
       (setq buffer-file-name (expand-file-name
-			      (concat
-			      (if (memq system-type
-					'(ms-dos windows-nt cygwin))
-				  "message"
-				"*message*")
-			       (format-time-string "-%Y%m%d-%H%M%S"))
-			      message-auto-save-directory))
+                  (concat
+                  (if (memq system-type
+                    '(ms-dos windows-nt cygwin))
+                  "message"
+                "*message*")
+                   (format-time-string "-%Y%m%d-%H%M%S"))
+                  message-auto-save-directory))
       (setq buffer-auto-save-file-name (make-auto-save-file-name)))
     (clear-visited-file-modtime)
     (setq buffer-file-coding-system message-draft-coding-system)))
@@ -6656,15 +6656,15 @@ are not included."
     (save-restriction
       (message-narrow-to-headers)
       (when (message-news-p)
-	(message-generate-headers
-	 (delq 'Lines
-	       (delq 'Subject
-		     (copy-sequence message-required-news-headers)))))
+    (message-generate-headers
+     (delq 'Lines
+           (delq 'Subject
+             (copy-sequence message-required-news-headers)))))
       (when (message-mail-p)
-	(message-generate-headers
-	 (delq 'Lines
-	       (delq 'Subject
-		     (copy-sequence message-required-mail-headers))))))))
+    (message-generate-headers
+     (delq 'Lines
+           (delq 'Subject
+             (copy-sequence message-required-mail-headers))))))))
 
 
 
@@ -6674,32 +6674,32 @@ are not included."
 
 ;;;###autoload
 (defun message-mail (&optional to subject other-headers continue
-			       switch-function yank-action send-actions
-			       return-action &rest ignored)
+                   switch-function yank-action send-actions
+                   return-action &rest ignored)
   "Start editing a mail message to be sent.
 OTHER-HEADERS is an alist of header/value pairs.  CONTINUE says whether
 to continue editing a message already being composed.  SWITCH-FUNCTION
 is a function used to switch to and display the mail buffer."
   (interactive)
   (let ((message-this-is-mail t)
-	message-buffers)
+    message-buffers)
     ;; Search for the existing message buffer if `continue' is non-nil.
     (if (and continue
-	     (setq message-buffers (message-buffers)))
-	(pop-to-buffer (car message-buffers))
+         (setq message-buffers (message-buffers)))
+    (pop-to-buffer (car message-buffers))
       ;; Start a new buffer.
       (unless (message-mail-user-agent)
-	(message-pop-to-buffer (message-buffer-name "mail" to) switch-function))
+    (message-pop-to-buffer (message-buffer-name "mail" to) switch-function))
       (message-setup
        (nconc
-	`((To . ,(or to "")) (Subject . ,(or subject "")))
-	;; C-h f compose-mail says that headers should be specified as
-	;; (string . value); however all the rest of message expects
-	;; headers to be symbols, not strings (eg message-header-format-alist).
-	;; https://lists.gnu.org/r/emacs-devel/2011-01/msg00337.html
-	;; We need to convert any string input, eg from rmail-start-mail.
-	(dolist (h other-headers other-headers)
-	  (if (stringp (car h)) (setcar h (intern (capitalize (car h)))))))
+    `((To . ,(or to "")) (Subject . ,(or subject "")))
+    ;; C-h f compose-mail says that headers should be specified as
+    ;; (string . value); however all the rest of message expects
+    ;; headers to be symbols, not strings (eg message-header-format-alist).
+    ;; https://lists.gnu.org/r/emacs-devel/2011-01/msg00337.html
+    ;; We need to convert any string input, eg from rmail-start-mail.
+    (dolist (h other-headers other-headers)
+      (if (stringp (car h)) (setcar h (intern (capitalize (car h)))))))
        yank-action send-actions continue switch-function
        return-action))))
 
@@ -6710,7 +6710,7 @@ is a function used to switch to and display the mail buffer."
   (let ((message-this-is-news t))
     (message-pop-to-buffer (message-buffer-name "posting" nil newsgroups))
     (message-setup `((Newsgroups . ,(or newsgroups ""))
-		     (Subject . ,(or subject ""))))))
+             (Subject . ,(or subject ""))))))
 
 (defun message-alter-recipients-discard-bogus-full-name (addrcell)
   "Discard mail address in full names.
@@ -6719,8 +6719,8 @@ address (e.g. \"foo@bar <foo@bar>\"), discard full name.
 ADDRCELL is a cons cell where the car is the mail address and the
 cdr is the complete address (full name and mail address)."
   (if (string-match (concat (regexp-quote (car addrcell)) ".*"
-			    (regexp-quote (car addrcell)))
-		    (cdr addrcell))
+                (regexp-quote (car addrcell)))
+            (cdr addrcell))
       (cons (car addrcell) (car addrcell))
     addrcell))
 
@@ -6729,9 +6729,9 @@ cdr is the complete address (full name and mail address)."
 It is called in `message-get-reply-headers' for each recipient.
 The function is called with one parameter, a cons cell ..."
   :type '(choice (const :tag "None" nil)
-		 (const :tag "Discard bogus full name"
-			message-alter-recipients-discard-bogus-full-name)
-		 function)
+         (const :tag "Discard bogus full name"
+            message-alter-recipients-discard-bogus-full-name)
+         function)
   :version "23.1" ;; No Gnus
   :group 'message-headers)
 
@@ -6743,65 +6743,65 @@ The function is called with one parameter, a cons cell ..."
       ;; Gmane renames "To".  Look at "Original-To", too, if it is present in
       ;; message-header-synonyms.
       (setq to (or (message-fetch-field "to")
-		   (and (cl-loop for synonym in message-header-synonyms
-			         when (memq 'Original-To synonym)
-			         return t)
-			(message-fetch-field "original-to")))
-	    cc (message-fetch-field "cc")
-	    extra (when message-extra-wide-headers
-		    (mapconcat 'identity
-			       (mapcar 'message-fetch-field
-				       message-extra-wide-headers)
-			       ", "))
-	    mct (message-fetch-field "mail-copies-to")
-	    author (or (message-fetch-field "mail-reply-to")
-		       (message-fetch-field "reply-to"))
-	    mft (and message-use-mail-followup-to
-		     (message-fetch-field "mail-followup-to")))
+           (and (cl-loop for synonym in message-header-synonyms
+                     when (memq 'Original-To synonym)
+                     return t)
+            (message-fetch-field "original-to")))
+        cc (message-fetch-field "cc")
+        extra (when message-extra-wide-headers
+            (mapconcat 'identity
+                   (mapcar 'message-fetch-field
+                       message-extra-wide-headers)
+                   ", "))
+        mct (message-fetch-field "mail-copies-to")
+        author (or (message-fetch-field "mail-reply-to")
+               (message-fetch-field "reply-to"))
+        mft (and message-use-mail-followup-to
+             (message-fetch-field "mail-followup-to")))
       ;; Make sure this message goes to the author if this is a wide
       ;; reply, since Reply-To address may be a list address a mailing
       ;; list server added.
       (when (and wide author)
-	(setq cc (concat author ", " cc)))
+    (setq cc (concat author ", " cc)))
       (when (or wide (not author))
-	(setq author (or (message-fetch-field "from") ""))))
+    (setq author (or (message-fetch-field "from") ""))))
 
     ;; Handle special values of Mail-Copies-To.
     (when mct
       (cond ((or (equal (downcase mct) "never")
-		 (equal (downcase mct) "nobody"))
-	     (setq never-mct t)
-	     (setq mct nil))
-	    ((or (equal (downcase mct) "always")
-		 (equal (downcase mct) "poster"))
-	     (setq mct author))))
+         (equal (downcase mct) "nobody"))
+         (setq never-mct t)
+         (setq mct nil))
+        ((or (equal (downcase mct) "always")
+         (equal (downcase mct) "poster"))
+         (setq mct author))))
 
     (save-match-data
       ;; Build (textual) list of new recipient addresses.
       (cond
        (to-address
-	(setq recipients (concat ", " to-address))
-	;; If the author explicitly asked for a copy, we don't deny it to them.
-	(if mct (setq recipients (concat recipients ", " mct))))
+    (setq recipients (concat ", " to-address))
+    ;; If the author explicitly asked for a copy, we don't deny it to them.
+    (if mct (setq recipients (concat recipients ", " mct))))
        ((not wide)
-	(setq recipients (concat ", " author)))
+    (setq recipients (concat ", " author)))
        (address-headers
-	(dolist (header address-headers)
-	  (let ((value (message-fetch-field header)))
-	    (when value
-	      (setq recipients (concat recipients ", " value))))))
+    (dolist (header address-headers)
+      (let ((value (message-fetch-field header)))
+        (when value
+          (setq recipients (concat recipients ", " value))))))
        ((and mft
-	     (string-match "[^ \t,]" mft)
-	     (or (not (eq message-use-mail-followup-to 'ask))
-		 (message-y-or-n-p "Obey Mail-Followup-To? " t "\
+         (string-match "[^ \t,]" mft)
+         (or (not (eq message-use-mail-followup-to 'ask))
+         (message-y-or-n-p "Obey Mail-Followup-To? " t "\
 You should normally obey the Mail-Followup-To: header.  In this
 article, it has the value of
 
 " mft "
 
 which directs your response to " (if (string-match "," mft)
-				     "the specified addresses"
-				   "that address only") ".
+                     "the specified addresses"
+                   "that address only") ".
 
 Most commonly, Mail-Followup-To is used by a mailing list poster to
 express that responses should be sent to just the list, and not the
@@ -6817,19 +6817,19 @@ responses here are directed to other addresses.
 
 You may customize the variable `message-use-mail-followup-to', if you
 want to get rid of this query permanently.")))
-	(setq recipients (concat ", " mft)))
+    (setq recipients (concat ", " mft)))
        (t
-	(setq recipients (if never-mct "" (concat ", " author)))
-	(if to (setq recipients (concat recipients ", " to)))
-	(if cc (setq recipients (concat recipients ", " cc)))
-	(if extra (setq recipients (concat recipients ", " extra)))
-	(if mct (setq recipients (concat recipients ", " mct)))))
+    (setq recipients (if never-mct "" (concat ", " author)))
+    (if to (setq recipients (concat recipients ", " to)))
+    (if cc (setq recipients (concat recipients ", " cc)))
+    (if extra (setq recipients (concat recipients ", " extra)))
+    (if mct (setq recipients (concat recipients ", " mct)))))
       (if (>= (length recipients) 2)
-	  ;; Strip the leading ", ".
-	  (setq recipients (substring recipients 2)))
+      ;; Strip the leading ", ".
+      (setq recipients (substring recipients 2)))
       ;; Squeeze whitespace.
       (while (string-match "[ \t][ \t]+" recipients)
-	(setq recipients (replace-match " " t t recipients)))
+    (setq recipients (replace-match " " t t recipients)))
       ;; Remove addresses that match `message-dont-reply-to-names'.
       (setq recipients
             (cond ((functionp message-dont-reply-to-names)
@@ -6846,74 +6846,74 @@ want to get rid of this query permanently.")))
                        (mail-dont-reply-to recipients)))))
       ;; Perhaps "Mail-Copies-To: never" removed the only address?
       (if (string-equal recipients "")
-	  (setq recipients author))
+      (setq recipients author))
       ;; Convert string to a list of (("foo@bar" . "Name <Foo@BAR>") ...).
       (setq recipients
-	    (mapcar
-	     (lambda (addr)
-	       (if message-alter-recipients-function
-		   (funcall message-alter-recipients-function
-			    (cons (downcase (mail-strip-quoted-names addr))
-				  addr))
-		 (cons (downcase (mail-strip-quoted-names addr)) addr)))
-	     (message-tokenize-header recipients)))
+        (mapcar
+         (lambda (addr)
+           (if message-alter-recipients-function
+           (funcall message-alter-recipients-function
+                (cons (downcase (mail-strip-quoted-names addr))
+                  addr))
+         (cons (downcase (mail-strip-quoted-names addr)) addr)))
+         (message-tokenize-header recipients)))
       ;; Remove all duplicates.
       (let ((s recipients))
-	(while s
-	  (let ((address (car (pop s))))
-	    (while (assoc address s)
-	      (setq recipients (delq (assoc address s) recipients)
-		    s (delq (assoc address s) s))))))
+    (while s
+      (let ((address (car (pop s))))
+        (while (assoc address s)
+          (setq recipients (delq (assoc address s) recipients)
+            s (delq (assoc address s) s))))))
 
       ;; Remove hierarchical lists that are contained within each other,
       ;; if message-hierarchical-addresses is defined.
       (when message-hierarchical-addresses
-	(let ((plain-addrs (mapcar 'car recipients))
-	      subaddrs recip)
-	  (while plain-addrs
-	    (setq subaddrs (assoc (car plain-addrs)
-				  message-hierarchical-addresses)
-		  plain-addrs (cdr plain-addrs))
-	    (when subaddrs
-	      (setq subaddrs (cdr subaddrs))
-	      (while subaddrs
-		(setq recip (assoc (car subaddrs) recipients)
-		      subaddrs (cdr subaddrs))
-		(if recip
-		    (setq recipients (delq recip recipients))))))))
+    (let ((plain-addrs (mapcar 'car recipients))
+          subaddrs recip)
+      (while plain-addrs
+        (setq subaddrs (assoc (car plain-addrs)
+                  message-hierarchical-addresses)
+          plain-addrs (cdr plain-addrs))
+        (when subaddrs
+          (setq subaddrs (cdr subaddrs))
+          (while subaddrs
+        (setq recip (assoc (car subaddrs) recipients)
+              subaddrs (cdr subaddrs))
+        (if recip
+            (setq recipients (delq recip recipients))))))))
 
       (setq recipients (message-prune-recipients recipients))
       (setq recipients
-	    (cl-loop for (id . address) in recipients
-		     collect (cons id (message--alter-repeat-address address))))
+        (cl-loop for (id . address) in recipients
+             collect (cons id (message--alter-repeat-address address))))
 
       ;; Build the header alist.  Allow the user to be asked whether
       ;; or not to reply to all recipients in a wide reply.
       (setq follow-to (list (cons 'To (cdr (pop recipients)))))
       (when (and recipients
-		 (or (not message-wide-reply-confirm-recipients)
-		     (y-or-n-p "Reply to all recipients? ")))
-	(setq recipients (mapconcat
-			  (lambda (addr) (cdr addr)) recipients ", "))
-	(if (string-match "^ +" recipients)
-	    (setq recipients (substring recipients (match-end 0))))
-	(push (cons 'Cc recipients) follow-to)))
+         (or (not message-wide-reply-confirm-recipients)
+             (y-or-n-p "Reply to all recipients? ")))
+    (setq recipients (mapconcat
+              (lambda (addr) (cdr addr)) recipients ", "))
+    (if (string-match "^ +" recipients)
+        (setq recipients (substring recipients (match-end 0))))
+    (push (cons 'Cc recipients) follow-to)))
     follow-to))
 
 (defun message-prune-recipients (recipients)
   (dolist (rule message-prune-recipient-rules)
     (let ((match (car rule))
-	  dup-match
-	  address)
+      dup-match
+      address)
+      (dolist (recipient recipients)
+    (setq address (car recipient))
+    (when (string-match match address)
+      (setq dup-match (replace-match (cadr rule) nil nil address))
       (dolist (recipient recipients)
-	(setq address (car recipient))
-	(when (string-match match address)
-	  (setq dup-match (replace-match (cadr rule) nil nil address))
-	  (dolist (recipient recipients)
-	    ;; Don't delete the address that triggered this.
-	    (when (and (not (eq address (car recipient)))
-		       (string-match dup-match (car recipient)))
-	      (setq recipients (delq recipient recipients))))))))
+        ;; Don't delete the address that triggered this.
+        (when (and (not (eq address (car recipient)))
+               (string-match dup-match (car recipient)))
+          (setq recipients (delq recipient recipients))))))))
   recipients)
 
 (defun message--alter-repeat-address (address)
@@ -6921,7 +6921,7 @@ want to get rid of this query permanently.")))
 The first bit will be elided if a match is made."
   (let ((bits (gnus-extract-address-components address)))
     (if (equal (car bits) (cadr bits))
-	(car bits)
+    (car bits)
       ;; Return the original address if we don't have repetition.
       address)))
 
@@ -6947,12 +6947,12 @@ Useful functions to put in this list include:
     ;; Simplify fully:
     (setq functions message-simplify-subject-functions))
   (when (and (memq 'message-strip-list-identifiers functions)
-	     gnus-list-identifiers)
+         gnus-list-identifiers)
     (setq subject (message-strip-list-identifiers subject)))
   (when (memq 'message-strip-subject-re functions)
     (setq subject (concat "Re: " (message-strip-subject-re subject))))
   (when (and (memq 'message-strip-subject-trailing-was functions)
-	     message-subject-trailing-was-query)
+         message-subject-trailing-was-query)
     (setq subject (message-strip-subject-trailing-was subject)))
   (when (memq 'message-strip-subject-encoded-words functions)
     (setq subject (message-strip-subject-encoded-words subject)))
@@ -6964,52 +6964,52 @@ Useful functions to put in this list include:
   (interactive)
   (require 'gnus-sum)			; for gnus-list-identifiers
   (let ((cur (current-buffer))
-	from subject date
-	references message-id follow-to
-	(inhibit-point-motion-hooks t)
-	(message-this-is-mail t)
-	gnus-warning)
+    from subject date
+    references message-id follow-to
+    (inhibit-point-motion-hooks t)
+    (message-this-is-mail t)
+    gnus-warning)
     (save-restriction
       (message-narrow-to-head-1)
       ;; Allow customizations to have their say.
       (if (not wide)
-	  ;; This is a regular reply.
-	  (when (functionp message-reply-to-function)
-	    (save-excursion
-	      (setq follow-to (funcall message-reply-to-function))))
-	;; This is a followup.
-	(when (functionp message-wide-reply-to-function)
-	  (save-excursion
-	    (setq follow-to
-		  (funcall message-wide-reply-to-function)))))
+      ;; This is a regular reply.
+      (when (functionp message-reply-to-function)
+        (save-excursion
+          (setq follow-to (funcall message-reply-to-function))))
+    ;; This is a followup.
+    (when (functionp message-wide-reply-to-function)
+      (save-excursion
+        (setq follow-to
+          (funcall message-wide-reply-to-function)))))
       (setq message-id (message-fetch-field "message-id" t)
-	    references (message-fetch-field "references")
-	    date (message-fetch-field "date")
-	    from (or (message-fetch-field "from") "nobody")
-	    subject (or (message-fetch-field "subject") "none"))
+        references (message-fetch-field "references")
+        date (message-fetch-field "date")
+        from (or (message-fetch-field "from") "nobody")
+        subject (or (message-fetch-field "subject") "none"))
 
       ;; Strip list identifiers, "Re: ", and "was:"
       (setq subject (message-simplify-subject subject))
 
       (when (and (setq gnus-warning (message-fetch-field "gnus-warning"))
-		 (string-match "<[^>]+>" gnus-warning))
-	(setq message-id (match-string 0 gnus-warning)))
+         (string-match "<[^>]+>" gnus-warning))
+    (setq message-id (match-string 0 gnus-warning)))
 
       (unless follow-to
-	(setq follow-to (message-get-reply-headers wide to-address))))
+    (setq follow-to (message-get-reply-headers wide to-address))))
 
     (let ((headers
-	   `((Subject . ,subject)
-	     ,@follow-to)))
+       `((Subject . ,subject)
+         ,@follow-to)))
       (unless (message-mail-user-agent)
-	(message-pop-to-buffer
-	 (message-buffer-name
-	  (if wide "wide reply" "reply") from
-	  (if wide to-address nil))
-	 switch-function))
+    (message-pop-to-buffer
+     (message-buffer-name
+      (if wide "wide reply" "reply") from
+      (if wide to-address nil))
+     switch-function))
       (setq message-reply-headers
-	    (vector 0 (cdr (assq 'Subject headers))
-		    from date message-id references 0 0 ""))
+        (vector 0 (cdr (assq 'Subject headers))
+            from date message-id references 0 0 ""))
       (message-setup headers cur))))
 
 ;;;###autoload
@@ -7025,40 +7025,40 @@ If TO-NEWSGROUPS, use that as the new Newsgroups line."
   (interactive)
   (require 'gnus-sum)			; for gnus-list-identifiers
   (let ((cur (current-buffer))
-	from subject date reply-to mrt mct
-	references message-id follow-to
-	(inhibit-point-motion-hooks t)
-	(message-this-is-news t)
-	followup-to distribution newsgroups gnus-warning posted-to)
+    from subject date reply-to mrt mct
+    references message-id follow-to
+    (inhibit-point-motion-hooks t)
+    (message-this-is-news t)
+    followup-to distribution newsgroups gnus-warning posted-to)
     (save-restriction
       (narrow-to-region
        (goto-char (point-min))
        (if (search-forward "\n\n" nil t)
-	   (1- (point))
-	 (point-max)))
+       (1- (point))
+     (point-max)))
       (when (functionp message-followup-to-function)
-	(setq follow-to
-	      (funcall message-followup-to-function)))
+    (setq follow-to
+          (funcall message-followup-to-function)))
       (setq from (message-fetch-field "from")
-	    date (message-fetch-field "date")
-	    subject (or (message-fetch-field "subject") "none")
-	    references (message-fetch-field "references")
-	    message-id (message-fetch-field "message-id" t)
-	    followup-to (message-fetch-field "followup-to")
-	    newsgroups (message-fetch-field "newsgroups")
-	    posted-to (message-fetch-field "posted-to")
-	    reply-to (message-fetch-field "reply-to")
-	    mrt (message-fetch-field "mail-reply-to")
-	    distribution (message-fetch-field "distribution")
-	    mct (message-fetch-field "mail-copies-to"))
+        date (message-fetch-field "date")
+        subject (or (message-fetch-field "subject") "none")
+        references (message-fetch-field "references")
+        message-id (message-fetch-field "message-id" t)
+        followup-to (message-fetch-field "followup-to")
+        newsgroups (message-fetch-field "newsgroups")
+        posted-to (message-fetch-field "posted-to")
+        reply-to (message-fetch-field "reply-to")
+        mrt (message-fetch-field "mail-reply-to")
+        distribution (message-fetch-field "distribution")
+        mct (message-fetch-field "mail-copies-to"))
       (when (and (setq gnus-warning (message-fetch-field "gnus-warning"))
-		 (string-match "<[^>]+>" gnus-warning))
-	(setq message-id (match-string 0 gnus-warning)))
+         (string-match "<[^>]+>" gnus-warning))
+    (setq message-id (match-string 0 gnus-warning)))
       ;; Remove bogus distribution.
       (when (and (stringp distribution)
-		 (let ((case-fold-search t))
-		   (string-match "world" distribution)))
-	(setq distribution nil))
+         (let ((case-fold-search t))
+           (string-match "world" distribution)))
+    (setq distribution nil))
       ;; Strip list identifiers, "Re: ", and "was:"
       (setq subject (message-simplify-subject subject))
       (widen))
@@ -7066,20 +7066,20 @@ If TO-NEWSGROUPS, use that as the new Newsgroups line."
     (message-pop-to-buffer (message-buffer-name "followup" from newsgroups))
 
     (setq message-reply-headers
-	  (vector 0 subject from date message-id references 0 0 ""))
+      (vector 0 subject from date message-id references 0 0 ""))
 
     (message-setup
      `((Subject . ,subject)
        ,@(cond
-	  (to-newsgroups
-	   (list (cons 'Newsgroups to-newsgroups)))
-	  (follow-to follow-to)
-	  ((and followup-to message-use-followup-to)
-	   (list
-	    (cond
-	     ((equal (downcase followup-to) "poster")
-	      (if (or (eq message-use-followup-to 'use)
-		      (message-y-or-n-p "Obey Followup-To: poster? " t "\
+      (to-newsgroups
+       (list (cons 'Newsgroups to-newsgroups)))
+      (follow-to follow-to)
+      ((and followup-to message-use-followup-to)
+       (list
+        (cond
+         ((equal (downcase followup-to) "poster")
+          (if (or (eq message-use-followup-to 'use)
+              (message-y-or-n-p "Obey Followup-To: poster? " t "\
 You should normally obey the Followup-To: header.
 
 `Followup-To: poster' sends your response via e-mail instead of news.
@@ -7089,21 +7089,21 @@ does not read the newsgroup, so he wouldn't see any replies sent to it.
 
 You may customize the variable `message-use-followup-to', if you
 want to get rid of this query permanently."))
-		  (progn
-		    (setq message-this-is-news nil)
-		    (cons 'To (or mrt reply-to from "")))
-		(cons 'Newsgroups newsgroups)))
-	     (t
-	      (if (or (equal followup-to newsgroups)
-		      (not (eq message-use-followup-to 'ask))
-		      (message-y-or-n-p
-		       (concat "Obey Followup-To: " followup-to "? ") t "\
+          (progn
+            (setq message-this-is-news nil)
+            (cons 'To (or mrt reply-to from "")))
+        (cons 'Newsgroups newsgroups)))
+         (t
+          (if (or (equal followup-to newsgroups)
+              (not (eq message-use-followup-to 'ask))
+              (message-y-or-n-p
+               (concat "Obey Followup-To: " followup-to "? ") t "\
 You should normally obey the Followup-To: header.
 
-	`Followup-To: " followup-to "'
+    `Followup-To: " followup-to "'
 directs your response to " (if (string-match "," followup-to)
-			       "the specified newsgroups"
-			     "that newsgroup only") ".
+                   "the specified newsgroups"
+                 "that newsgroup only") ".
 
 If a message is posted to several newsgroups, Followup-To is often
 used to direct the following discussion to one newsgroup only,
@@ -7115,20 +7115,20 @@ responses here are directed to other newsgroups.
 
 You may customize the variable `message-use-followup-to', if you
 want to get rid of this query permanently."))
-		  (cons 'Newsgroups followup-to)
-		(cons 'Newsgroups newsgroups))))))
-	  (posted-to
-	   `((Newsgroups . ,posted-to)))
-	  (t
-	   `((Newsgroups . ,newsgroups))))
+          (cons 'Newsgroups followup-to)
+        (cons 'Newsgroups newsgroups))))))
+      (posted-to
+       `((Newsgroups . ,posted-to)))
+      (t
+       `((Newsgroups . ,newsgroups))))
        ,@(and distribution (list (cons 'Distribution distribution)))
        ,@(when (and mct
-		    (not (or (equal (downcase mct) "never")
-			     (equal (downcase mct) "nobody"))))
-	   (list (cons 'Cc (if (or (equal (downcase mct) "always")
-				   (equal (downcase mct) "poster"))
-			       (or mrt reply-to from "")
-			     mct)))))
+            (not (or (equal (downcase mct) "never")
+                 (equal (downcase mct) "nobody"))))
+       (list (cons 'Cc (if (or (equal (downcase mct) "always")
+                   (equal (downcase mct) "poster"))
+                   (or mrt reply-to from "")
+                 mct)))))
 
      cur)))
 
@@ -7152,26 +7152,26 @@ to match all of yours addresses."
     (save-restriction
       (message-narrow-to-head-1)
       (if (and (message-fetch-field "Cancel-Lock")
-	       (message-gnksa-enable-p 'canlock-verify))
-	  (if (null (canlock-verify))
-	      t
-	    (error "Failed to verify Cancel-lock: This article is not yours"))
-	(let (sender from)
-	  (or
-	   (message-gnksa-enable-p 'cancel-messages)
-	   (and (setq sender (message-fetch-field "sender"))
-		(string-equal (downcase sender)
-			      (downcase (message-make-sender))))
-	   ;; Email address in From field equals to our address
-	   (and (setq from (message-fetch-field "from"))
-		(string-equal
-		 (downcase (car (mail-header-parse-address from)))
-		 (downcase (car (mail-header-parse-address
-				 (message-make-from))))))
-	   ;; Email address in From field matches
-	   ;; 'message-alternative-emails' regexp or function.
-	   (and from
-		message-alternative-emails
+           (message-gnksa-enable-p 'canlock-verify))
+      (if (null (canlock-verify))
+          t
+        (error "Failed to verify Cancel-lock: This article is not yours"))
+    (let (sender from)
+      (or
+       (message-gnksa-enable-p 'cancel-messages)
+       (and (setq sender (message-fetch-field "sender"))
+        (string-equal (downcase sender)
+                  (downcase (message-make-sender))))
+       ;; Email address in From field equals to our address
+       (and (setq from (message-fetch-field "from"))
+        (string-equal
+         (downcase (car (mail-header-parse-address from)))
+         (downcase (car (mail-header-parse-address
+                 (message-make-from))))))
+       ;; Email address in From field matches
+       ;; 'message-alternative-emails' regexp or function.
+       (and from
+        message-alternative-emails
                 (cond ((functionp message-alternative-emails)
                        (funcall message-alternative-emails
                                 (mail-header-parse-address from)))
@@ -7189,37 +7189,37 @@ If ARG, allow editing of the cancellation message."
     (save-excursion
       ;; Get header info from original article.
       (save-restriction
-	(message-narrow-to-head-1)
-	(setq from (message-fetch-field "from")
-	      newsgroups (message-fetch-field "newsgroups")
-	      message-id (message-fetch-field "message-id" t)
-	      distribution (message-fetch-field "distribution")))
+    (message-narrow-to-head-1)
+    (setq from (message-fetch-field "from")
+          newsgroups (message-fetch-field "newsgroups")
+          message-id (message-fetch-field "message-id" t)
+          distribution (message-fetch-field "distribution")))
       ;; Make sure that this article was written by the user.
       (unless (message-is-yours-p)
-	(error "This article is not yours"))
+    (error "This article is not yours"))
       (when (yes-or-no-p "Do you really want to cancel this article? ")
-	;; Make control message.
-	(if arg
-	    (message-news)
-	  (setq buf (set-buffer (get-buffer-create " *message cancel*"))))
-	(erase-buffer)
-	(insert "Newsgroups: " newsgroups "\n"
-		"From: " from "\n"
-		"Subject: cancel " message-id "\n"
-		"Control: cancel " message-id "\n"
-		(if distribution
-		    (concat "Distribution: " distribution "\n")
-		  "")
-		mail-header-separator "\n"
-		message-cancel-message)
-	(run-hooks 'message-cancel-hook)
-	(unless arg
-	  (message "Canceling your article...")
-	  (if (let ((message-syntax-checks
-		     'dont-check-for-anything-just-trust-me))
-		(funcall message-send-news-function))
-	      (message "Canceling your article...done"))
-	  (kill-buffer buf))))))
+    ;; Make control message.
+    (if arg
+        (message-news)
+      (setq buf (set-buffer (get-buffer-create " *message cancel*"))))
+    (erase-buffer)
+    (insert "Newsgroups: " newsgroups "\n"
+        "From: " from "\n"
+        "Subject: cancel " message-id "\n"
+        "Control: cancel " message-id "\n"
+        (if distribution
+            (concat "Distribution: " distribution "\n")
+          "")
+        mail-header-separator "\n"
+        message-cancel-message)
+    (run-hooks 'message-cancel-hook)
+    (unless arg
+      (message "Canceling your article...")
+      (if (let ((message-syntax-checks
+             'dont-check-for-anything-just-trust-me))
+        (funcall message-send-news-function))
+          (message "Canceling your article...done"))
+      (kill-buffer buf))))))
 
 ;;;###autoload
 (defun message-supersede ()
@@ -7241,7 +7241,7 @@ header line with the old Message-ID."
       (message-remove-header message-ignored-supersedes-headers t))
     (goto-char (point-min))
     (if (not (re-search-forward "^Message-ID: " nil t))
-	(error "No Message-ID in this article")
+    (error "No Message-ID in this article")
       (replace-match "Supersedes: " t t))
     (goto-char (point-max))
     (insert mail-header-separator)
@@ -7254,18 +7254,18 @@ header line with the old Message-ID."
   (interactive)
   (let ((file-name (make-auto-save-file-name)))
     (cond ((save-window-excursion
-	     (with-output-to-temp-buffer "*Directory*"
-	       (with-current-buffer standard-output
-		 (fundamental-mode))
-	       (buffer-disable-undo standard-output)
-	       (let ((default-directory "/"))
-		 (call-process
-		  "ls" nil standard-output nil "-l" file-name)))
-	     (yes-or-no-p (format "Recover auto save file %s? " file-name)))
-	   (let ((buffer-read-only nil))
-	     (erase-buffer)
-	     (insert-file-contents file-name nil)))
-	  (t (error "message-recover canceled")))))
+         (with-output-to-temp-buffer "*Directory*"
+           (with-current-buffer standard-output
+         (fundamental-mode))
+           (buffer-disable-undo standard-output)
+           (let ((default-directory "/"))
+         (call-process
+          "ls" nil standard-output nil "-l" file-name)))
+         (yes-or-no-p (format "Recover auto save file %s? " file-name)))
+       (let ((buffer-read-only nil))
+         (erase-buffer)
+         (insert-file-contents file-name nil)))
+      (t (error "message-recover canceled")))))
 
 ;;; Washing Subject:
 
@@ -7277,7 +7277,7 @@ Previous forwarders, repliers, etc. may add it."
     (goto-char (point-min))
     ;; strip Re/Fwd stuff off the beginning
     (while (re-search-forward
-	    "\\([Rr][Ee]:\\|[Ff][Ww][Dd]\\(\\[[0-9]*\\]\\)?:\\|[Ff][Ww]:\\)" nil t)
+        "\\([Rr][Ee]:\\|[Ff][Ww][Dd]\\(\\[[0-9]*\\]\\)?:\\|[Ff][Ww]:\\)" nil t)
       (replace-match ""))
 
     ;; and gnus-style forwards [[email-masked]] subject
@@ -7311,19 +7311,19 @@ The form is: [Source] Subject, where if the original message was mail,
 Source is the name of the sender, and if the original message was
 news, Source is the list of newsgroups is was posted to."
   (let* ((group (message-fetch-field "newsgroups"))
-	 (from (message-fetch-field "from"))
-	 (prefix
-	  (if group
-	      (gnus-group-decoded-name group)
-	    (or (and from (or
-			   (car (gnus-extract-address-components from))
-			   (cadr (gnus-extract-address-components from))))
-		"(nowhere)"))))
+     (from (message-fetch-field "from"))
+     (prefix
+      (if group
+          (gnus-group-decoded-name group)
+        (or (and from (or
+               (car (gnus-extract-address-components from))
+               (cadr (gnus-extract-address-components from))))
+        "(nowhere)"))))
     (concat "["
-	    (if message-forward-decoded-p
-		prefix
-	      (mail-decode-encoded-word-string prefix))
-	    "] " subject)))
+        (if message-forward-decoded-p
+        prefix
+          (mail-decode-encoded-word-string prefix))
+        "] " subject)))
 
 (defun message-forward-subject-author-subject (subject)
   "Generate a SUBJECT for a forwarded message.
@@ -7331,16 +7331,16 @@ The form is: [Source] Subject, where if the original message was mail,
 Source is the sender, and if the original message was news, Source is
 the list of newsgroups is was posted to."
   (let* ((group (message-fetch-field "newsgroups"))
-	 (prefix
-	  (if group
-	      (gnus-group-decoded-name group)
-	    (or (message-fetch-field "from")
-		"(nowhere)"))))
+     (prefix
+      (if group
+          (gnus-group-decoded-name group)
+        (or (message-fetch-field "from")
+        "(nowhere)"))))
     (concat "["
-	    (if message-forward-decoded-p
-		prefix
-	      (mail-decode-encoded-word-string prefix))
-	    "] " subject)))
+        (if message-forward-decoded-p
+        prefix
+          (mail-decode-encoded-word-string prefix))
+        "] " subject)))
 
 (defun message-forward-subject-fwd (subject)
   "Generate a SUBJECT for a forwarded message.
@@ -7356,25 +7356,25 @@ the message."
     (save-restriction
       (message-narrow-to-head-1)
       (let ((funcs message-make-forward-subject-function)
-	    (subject (message-fetch-field "Subject")))
-	(setq subject
-	      (if subject
-		  (if message-forward-decoded-p
-		      subject
-		    (mail-decode-encoded-word-string subject))
-		""))
-	(when message-wash-forwarded-subjects
-	  (setq subject (message-wash-subject subject)))
-	;; Make sure funcs is a list.
-	(and funcs
-	     (not (listp funcs))
-	     (setq funcs (list funcs)))
-	;; Apply funcs in order, passing subject generated by previous
-	;; func to the next one.
-	(dolist (func funcs)
-	  (when (functionp func)
-	    (setq subject (funcall func subject))))
-	subject))))
+        (subject (message-fetch-field "Subject")))
+    (setq subject
+          (if subject
+          (if message-forward-decoded-p
+              subject
+            (mail-decode-encoded-word-string subject))
+        ""))
+    (when message-wash-forwarded-subjects
+      (setq subject (message-wash-subject subject)))
+    ;; Make sure funcs is a list.
+    (and funcs
+         (not (listp funcs))
+         (setq funcs (list funcs)))
+    ;; Apply funcs in order, passing subject generated by previous
+    ;; func to the next one.
+    (dolist (func funcs)
+      (when (functionp func)
+        (setq subject (funcall func subject))))
+    subject))))
 
 (defvar gnus-article-decoded-p)
 
@@ -7386,13 +7386,13 @@ Optional NEWS will use news to forward instead of mail.
 Optional DIGEST will use digest to forward."
   (interactive "P")
   (let* ((cur (current-buffer))
-	 (message-forward-decoded-p
-	  (if (local-variable-p 'gnus-article-decoded-p (current-buffer))
-	      gnus-article-decoded-p ;; In an article buffer.
-	    message-forward-decoded-p))
-	 (subject (message-make-forward-subject)))
+     (message-forward-decoded-p
+      (if (local-variable-p 'gnus-article-decoded-p (current-buffer))
+          gnus-article-decoded-p ;; In an article buffer.
+        message-forward-decoded-p))
+     (subject (message-make-forward-subject)))
     (if news
-	(message-news nil subject)
+    (message-news nil subject)
       (message-mail nil subject))
     (message-forward-make-body cur digest)))
 
@@ -7400,22 +7400,22 @@ Optional DIGEST will use digest to forward."
   (insert
    "\n-------------------- Start of forwarded message --------------------\n")
   (let ((b (point))
-	(contents (with-current-buffer forward-buffer (buffer-string)))
-	e)
+    (contents (with-current-buffer forward-buffer (buffer-string)))
+    e)
     (unless (multibyte-string-p contents)
       (error "Attempt to insert unibyte string from the buffer \"%s\"\
  to the multibyte buffer \"%s\""
-	     (if (bufferp forward-buffer)
-		 (buffer-name forward-buffer)
-	       forward-buffer)
-	     (buffer-name)))
+         (if (bufferp forward-buffer)
+         (buffer-name forward-buffer)
+           forward-buffer)
+         (buffer-name)))
     (insert (mm-with-multibyte-buffer
-	      (insert contents)
-	      (mime-to-mml)
-	      (goto-char (point-min))
-	      (when (looking-at "From ")
-		(replace-match "X-From-Line: "))
-	      (buffer-string)))
+          (insert contents)
+          (mime-to-mml)
+          (goto-char (point-min))
+          (when (looking-at "From ")
+        (replace-match "X-From-Line: "))
+          (buffer-string)))
     (unless (bolp) (insert "\n"))
     (setq e (point))
     (insert
@@ -7424,25 +7424,25 @@ Optional DIGEST will use digest to forward."
 
 (defun message-remove-ignored-headers (b e)
   (when (or message-forward-ignored-headers
-	    message-forward-included-headers)
+        message-forward-included-headers)
     (save-restriction
       (narrow-to-region b e)
       (goto-char b)
       (narrow-to-region (point)
-			(or (search-forward "\n\n" nil t) (point)))
+            (or (search-forward "\n\n" nil t) (point)))
       (when message-forward-ignored-headers
-	(let ((ignored (if (stringp message-forward-ignored-headers)
-			   (list message-forward-ignored-headers)
-			 message-forward-ignored-headers)))
-	  (dolist (elem ignored)
-	    (message-remove-header elem t))))
+    (let ((ignored (if (stringp message-forward-ignored-headers)
+               (list message-forward-ignored-headers)
+             message-forward-ignored-headers)))
+      (dolist (elem ignored)
+        (message-remove-header elem t))))
       (when message-forward-included-headers
-	(message-remove-header
-	 (if (listp message-forward-included-headers)
-	     (mapconcat #'identity (cons "^$" message-forward-included-headers)
-			"\\|")
-	   message-forward-included-headers)
-	 t nil t)))))
+    (message-remove-header
+     (if (listp message-forward-included-headers)
+         (mapconcat #'identity (cons "^$" message-forward-included-headers)
+            "\\|")
+       message-forward-included-headers)
+     t nil t)))))
 
 (defun message-forward-make-body-mime (forward-buffer &optional beg end)
   (let ((b (point)))
@@ -7453,7 +7453,7 @@ Optional DIGEST will use digest to forward."
       (mml-quote-region (point-min) (point-max))
       (goto-char (point-min))
       (when (looking-at "From ")
-	(replace-match "X-From-Line: "))
+    (replace-match "X-From-Line: "))
       (goto-char (point-max)))
     (insert "<#/part>\n")
     ;; Consider there is no illegible text.
@@ -7465,28 +7465,28 @@ Optional DIGEST will use digest to forward."
   (insert "\n\n<#mml type=message/rfc822 disposition=inline>\n")
   (let ((b (point)) e)
     (if (not message-forward-decoded-p)
-	(let ((contents (with-current-buffer forward-buffer (buffer-string))))
-	  (unless (multibyte-string-p contents)
-	    (error "Attempt to insert unibyte string from the buffer \"%s\"\
+    (let ((contents (with-current-buffer forward-buffer (buffer-string))))
+      (unless (multibyte-string-p contents)
+        (error "Attempt to insert unibyte string from the buffer \"%s\"\
  to the multibyte buffer \"%s\""
-		   (if (bufferp forward-buffer)
-		       (buffer-name forward-buffer)
-		     forward-buffer)
-		   (buffer-name)))
-	  (insert (mm-with-multibyte-buffer
-		    (insert contents)
-		    (mime-to-mml)
-		    (goto-char (point-min))
-		    (when (looking-at "From ")
-		      (replace-match "X-From-Line: "))
-		    (buffer-string))))
+           (if (bufferp forward-buffer)
+               (buffer-name forward-buffer)
+             forward-buffer)
+           (buffer-name)))
+      (insert (mm-with-multibyte-buffer
+            (insert contents)
+            (mime-to-mml)
+            (goto-char (point-min))
+            (when (looking-at "From ")
+              (replace-match "X-From-Line: "))
+            (buffer-string))))
       (save-restriction
-	(narrow-to-region (point) (point))
-	(mml-insert-buffer forward-buffer)
-	(goto-char (point-min))
-	(when (looking-at "From ")
-	  (replace-match "X-From-Line: "))
-	(goto-char (point-max))))
+    (narrow-to-region (point) (point))
+    (mml-insert-buffer forward-buffer)
+    (goto-char (point-min))
+    (when (looking-at "From ")
+      (replace-match "X-From-Line: "))
+    (goto-char (point-max))))
     (setq e (point))
     (insert "<#/mml>\n")
     (when (not message-forward-decoded-p)
@@ -7509,7 +7509,7 @@ Optional DIGEST will use digest to forward."
       (narrow-to-region b e)
       (goto-char b)
       (narrow-to-region (point)
-			(or (search-forward "\n\n" nil t) (point)))
+            (or (search-forward "\n\n" nil t) (point)))
       (delete-region (point-min) (point-max)))))
 
 (defun message-forward-make-body-digest (forward-buffer)
@@ -7527,51 +7527,51 @@ messages that don't conform to PGP/MIME described in RFC2015.  HANDLES
 is for the internal use."
   (unless handles
     (let ((mm-decrypt-option 'never)
-	  (mm-verify-option 'never))
+      (mm-verify-option 'never))
       (if (setq handles (mm-dissect-buffer nil t))
-	  (unless dont-emulate-mime
-	    (mm-uu-dissect-text-parts handles))
-	(unless dont-emulate-mime
-	  (setq handles (mm-uu-dissect))))))
+      (unless dont-emulate-mime
+        (mm-uu-dissect-text-parts handles))
+    (unless dont-emulate-mime
+      (setq handles (mm-uu-dissect))))))
   ;; Check text/plain message in which there is a signed or encrypted
   ;; body that has been encoded by B or Q.
   (unless (or handles dont-emulate-mime)
     (let ((cur (current-buffer))
-	  (mm-decrypt-option 'never)
-	  (mm-verify-option 'never))
+      (mm-decrypt-option 'never)
+      (mm-verify-option 'never))
       (with-temp-buffer
-	(insert-buffer-substring cur)
-	(when (setq handles (mm-dissect-buffer t t))
-	  (if (and (bufferp (car handles))
-		   (equal (mm-handle-media-type handles) "text/plain"))
-	      (progn
-		(erase-buffer)
-		(insert-buffer-substring (car handles))
-		(mm-decode-content-transfer-encoding
-		 (mm-handle-encoding handles))
-		(mm-destroy-parts handles)
-		(setq handles (mm-uu-dissect)))
-	    (mm-destroy-parts handles)
-	    (setq handles nil))))))
+    (insert-buffer-substring cur)
+    (when (setq handles (mm-dissect-buffer t t))
+      (if (and (bufferp (car handles))
+           (equal (mm-handle-media-type handles) "text/plain"))
+          (progn
+        (erase-buffer)
+        (insert-buffer-substring (car handles))
+        (mm-decode-content-transfer-encoding
+         (mm-handle-encoding handles))
+        (mm-destroy-parts handles)
+        (setq handles (mm-uu-dissect)))
+        (mm-destroy-parts handles)
+        (setq handles nil))))))
   (when handles
     (prog1
-	(catch 'found
-	  (dolist (handle (if (stringp (car handles))
-			      (if (member (car handles)
-					  '("multipart/signed"
-					    "multipart/encrypted"))
-				  (throw 'found t)
-				(cdr handles))
-			    (list handles)))
-	    (if (stringp (car handle))
-		(when (message-signed-or-encrypted-p dont-emulate-mime handle)
-		  (throw 'found t))
-	      (when (and (bufferp (car handle))
-			 (equal (mm-handle-media-type handle)
-				"message/rfc822"))
-		(with-current-buffer (mm-handle-buffer handle)
-		  (when (message-signed-or-encrypted-p dont-emulate-mime)
-		    (throw 'found t)))))))
+    (catch 'found
+      (dolist (handle (if (stringp (car handles))
+                  (if (member (car handles)
+                      '("multipart/signed"
+                        "multipart/encrypted"))
+                  (throw 'found t)
+                (cdr handles))
+                (list handles)))
+        (if (stringp (car handle))
+        (when (message-signed-or-encrypted-p dont-emulate-mime handle)
+          (throw 'found t))
+          (when (and (bufferp (car handle))
+             (equal (mm-handle-media-type handle)
+                "message/rfc822"))
+        (with-current-buffer (mm-handle-buffer handle)
+          (when (message-signed-or-encrypted-p dont-emulate-mime)
+            (throw 'found t)))))))
       (mm-destroy-parts handles))))
 
 ;;;###autoload
@@ -7584,17 +7584,17 @@ is for the internal use."
   (if digest
       (message-forward-make-body-digest forward-buffer)
     (if message-forward-as-mime
-	(if (and message-forward-show-mml
-		 (not (and (eq message-forward-show-mml 'best)
-			   ;; Use the raw form in the body if it contains
-			   ;; signed or encrypted message so as not to be
-			   ;; destroyed by re-encoding.
-			   (with-current-buffer forward-buffer
-			     (condition-case nil
-				 (message-signed-or-encrypted-p)
-			       (error t))))))
-	    (message-forward-make-body-mml forward-buffer)
-	  (message-forward-make-body-mime forward-buffer))
+    (if (and message-forward-show-mml
+         (not (and (eq message-forward-show-mml 'best)
+               ;; Use the raw form in the body if it contains
+               ;; signed or encrypted message so as not to be
+               ;; destroyed by re-encoding.
+               (with-current-buffer forward-buffer
+                 (condition-case nil
+                 (message-signed-or-encrypted-p)
+                   (error t))))))
+        (message-forward-make-body-mml forward-buffer)
+      (message-forward-make-body-mime forward-buffer))
       (message-forward-make-body-plain forward-buffer)))
   (message-position-point))
 
@@ -7615,7 +7615,7 @@ is for the internal use."
   (interactive)
   (setq rmail-enable-mime-composing t)
   (setq rmail-insert-mime-forwarded-message-function
-	'message-forward-rmail-make-body))
+    'message-forward-rmail-make-body))
 
 (defvar message-inhibit-body-encoding nil)
 
@@ -7627,32 +7627,32 @@ is for the internal use."
   (message "Resending message to %s..." address)
   (save-excursion
     (let ((cur (current-buffer))
-	  gcc beg)
+      gcc beg)
       ;; We first set up a normal mail buffer.
       (unless (message-mail-user-agent)
-	(set-buffer (get-buffer-create " *message resend*"))
-	(let ((inhibit-read-only t))
-	  (erase-buffer)))
+    (set-buffer (get-buffer-create " *message resend*"))
+    (let ((inhibit-read-only t))
+      (erase-buffer)))
       (let ((message-this-is-mail t)
-	    message-generate-hashcash
-	    message-setup-hook)
-	(message-setup `((To . ,address))))
+        message-generate-hashcash
+        message-setup-hook)
+    (message-setup `((To . ,address))))
       ;; Insert our usual headers.
       (message-generate-headers '(From Date To Message-ID))
       (message-narrow-to-headers)
       (when (setq gcc (mail-fetch-field "gcc" nil t))
-	(message-remove-header "gcc"))
+    (message-remove-header "gcc"))
       ;; Remove X-Draft-From header etc.
       (message-remove-header message-ignored-mail-headers t)
       ;; Rename them all to "Resent-*".
       (goto-char (point-min))
       (while (re-search-forward "^[A-Za-z]" nil t)
-	(forward-char -1)
-	(insert "Resent-"))
+    (forward-char -1)
+    (insert "Resent-"))
       (widen)
       (forward-line)
       (let ((inhibit-read-only t))
-	(delete-region (point) (point-max)))
+    (delete-region (point) (point-max)))
       (setq beg (point))
       ;; Insert the message to be resent.
       (insert-buffer-substring cur)
@@ -7660,35 +7660,35 @@ is for the internal use."
       (search-forward "\n\n")
       (forward-char -1)
       (save-restriction
-	(narrow-to-region beg (point))
-	(message-remove-header message-ignored-resent-headers t)
-	(goto-char (point-max)))
+    (narrow-to-region beg (point))
+    (message-remove-header message-ignored-resent-headers t)
+    (goto-char (point-max)))
       (insert mail-header-separator)
       ;; Rename all old ("Also-")Resent headers.
       (while (re-search-backward "^\\(Also-\\)*Resent-" beg t)
-	(beginning-of-line)
-	(insert "Also-"))
+    (beginning-of-line)
+    (insert "Also-"))
       ;; Quote any "From " lines at the beginning.
       (goto-char beg)
       (when (looking-at "From ")
-	(replace-match "X-From-Line: "))
+    (replace-match "X-From-Line: "))
       ;; Send it.
       (let ((message-inhibit-body-encoding
-	     ;; Don't do any further encoding if it looks like the
-	     ;; message has already been encoded.
-	     (let ((case-fold-search t))
-	       (re-search-forward "^mime-version:" nil t)))
-	    (message-inhibit-ecomplete t)
-	    ;; We don't want smtpmail.el to encode anything, either.
-	    (sendmail-coding-system 'raw-text)
-	    (select-safe-coding-system-function nil)
-	    message-required-mail-headers
-	    message-generate-hashcash
-	    rfc2047-encode-encoded-words)
-	(message-send-mail))
+         ;; Don't do any further encoding if it looks like the
+         ;; message has already been encoded.
+         (let ((case-fold-search t))
+           (re-search-forward "^mime-version:" nil t)))
+        (message-inhibit-ecomplete t)
+        ;; We don't want smtpmail.el to encode anything, either.
+        (sendmail-coding-system 'raw-text)
+        (select-safe-coding-system-function nil)
+        message-required-mail-headers
+        message-generate-hashcash
+        rfc2047-encode-encoded-words)
+    (message-send-mail))
       (when gcc
-	(message-goto-eoh)
-	(insert "Gcc: " gcc "\n"))
+    (message-goto-eoh)
+    (insert "Gcc: " gcc "\n"))
       (run-hooks 'message-sent-hook)
       (kill-buffer (current-buffer)))
     (message "Resending message to %s...done" address)))
@@ -7701,11 +7701,11 @@ contains some mail you have written which has been bounced back to
 you."
   (interactive)
   (let ((handles (mm-dissect-buffer t))
-	boundary)
+    boundary)
     (message-pop-to-buffer (message-buffer-name "bounce"))
     (if (stringp (car handles))
-	;; This is a MIME bounce.
-	(mm-insert-part (car (last handles)))
+    ;; This is a MIME bounce.
+    (mm-insert-part (car (last handles)))
       ;; This is a non-MIME bounce, so we try to remove things
       ;; manually.
       (mm-insert-part handles)
@@ -7715,18 +7715,18 @@ you."
       (setq boundary (point))
       ;; We remove everything before the bounced mail.
       (if (or (re-search-forward message-unsent-separator nil t)
-	      (progn
-		(search-forward "\n\n" nil 'move)
-		(re-search-backward "^Return-Path:.*\n" boundary t)))
-	  (progn
-	    (forward-line 1)
-	    (delete-region (point-min)
-			   (if (re-search-forward "^[^ \n\t]+:" nil t)
-			       (match-beginning 0)
-			     (point))))
-	(goto-char boundary)
-	(when (re-search-backward "^.?From .*\n" nil t)
-	  (delete-region (match-beginning 0) (match-end 0)))))
+          (progn
+        (search-forward "\n\n" nil 'move)
+        (re-search-backward "^Return-Path:.*\n" boundary t)))
+      (progn
+        (forward-line 1)
+        (delete-region (point-min)
+               (if (re-search-forward "^[^ \n\t]+:" nil t)
+                   (match-beginning 0)
+                 (point))))
+    (goto-char boundary)
+    (when (re-search-backward "^.?From .*\n" nil t)
+      (delete-region (match-beginning 0) (match-end 0)))))
     (mime-to-mml)
     (save-restriction
       (message-narrow-to-head-1)
@@ -7745,10 +7745,10 @@ you."
   (interactive)
   (unless (message-mail-user-agent)
     (message-pop-to-buffer (message-buffer-name "mail" to)
-			   'switch-to-buffer-other-window))
+               'switch-to-buffer-other-window))
   (let ((message-this-is-mail t))
     (message-setup `((To . ,(or to "")) (Subject . ,(or subject "")))
-		   nil nil nil 'switch-to-buffer-other-window)))
+           nil nil nil 'switch-to-buffer-other-window)))
 
 ;;;###autoload
 (defun message-mail-other-frame (&optional to subject)
@@ -7756,30 +7756,30 @@ you."
   (interactive)
   (unless (message-mail-user-agent)
     (message-pop-to-buffer (message-buffer-name "mail" to)
-			   'switch-to-buffer-other-frame))
+               'switch-to-buffer-other-frame))
   (let ((message-this-is-mail t))
     (message-setup `((To . ,(or to "")) (Subject . ,(or subject "")))
-		   nil nil nil 'switch-to-buffer-other-frame)))
+           nil nil nil 'switch-to-buffer-other-frame)))
 
 ;;;###autoload
 (defun message-news-other-window (&optional newsgroups subject)
   "Start editing a news article to be sent."
   (interactive)
   (message-pop-to-buffer (message-buffer-name "posting" nil newsgroups)
-			 'switch-to-buffer-other-window)
+             'switch-to-buffer-other-window)
   (let ((message-this-is-news t))
     (message-setup `((Newsgroups . ,(or newsgroups ""))
-		     (Subject . ,(or subject ""))))))
+             (Subject . ,(or subject ""))))))
 
 ;;;###autoload
 (defun message-news-other-frame (&optional newsgroups subject)
   "Start editing a news article to be sent."
   (interactive)
   (message-pop-to-buffer (message-buffer-name "posting" nil newsgroups)
-			 'switch-to-buffer-other-frame)
+             'switch-to-buffer-other-frame)
   (let ((message-this-is-news t))
     (message-setup `((Newsgroups . ,(or newsgroups ""))
-		     (Subject . ,(or subject ""))))))
+             (Subject . ,(or subject ""))))))
 
 ;;; underline.el
 
@@ -7797,9 +7797,9 @@ which specify the range to operate on."
       (move-marker end1 (max start end))
       (goto-char (min start end))
       (while (< (point) end1)
-	(or (looking-at "[_\^@- ]")
-	    (insert (char-after) "\b"))
-	(forward-char 1)))))
+    (or (looking-at "[_\^@- ]")
+        (insert (char-after) "\b"))
+    (forward-char 1)))))
 
 ;;;###autoload
 (defun message-unbold-region (start end)
@@ -7812,13 +7812,13 @@ which specify the range to operate on."
       (move-marker end1 (max start end))
       (goto-char (min start end))
       (while (search-forward "\b" end1 t)
-	(if (eq (char-after) (char-after (- (point) 2)))
-	    (delete-char -2))))))
+    (if (eq (char-after) (char-after (- (point) 2)))
+        (delete-char -2))))))
 
 (defun message-exchange-point-and-mark ()
   "Exchange point and mark, but don't activate region if it was inactive."
   (goto-char (prog1 (mark t)
-	       (set-marker (mark-marker) (point)))))
+           (set-marker (mark-marker) (point)))))
 
 ;; Support for toolbar
 (defvar tool-bar-mode)
@@ -7835,8 +7835,8 @@ Setter function for custom variables."
     (set-default symbol value)))
 
 (defcustom message-tool-bar (if (eq gmm-tool-bar-style 'gnome)
-				'message-tool-bar-gnome
-			      'message-tool-bar-retro)
+                'message-tool-bar-gnome
+                  'message-tool-bar-retro)
   "Specifies the message mode tool bar.
 
 It can be either a list or a symbol referring to a list.  See
@@ -7847,9 +7847,9 @@ Pre-defined symbols include `message-tool-bar-gnome' and
 `message-tool-bar-retro'."
   :type '(repeat gmm-tool-bar-list-item)
   :type '(choice (const :tag "GNOME style" message-tool-bar-gnome)
-		 (const :tag "Retro look"  message-tool-bar-retro)
-		 (repeat :tag "User defined list" gmm-tool-bar-item)
-		 (symbol))
+         (const :tag "Retro look"  message-tool-bar-retro)
+         (repeat :tag "User defined list" gmm-tool-bar-item)
+         (symbol))
   :version "23.1" ;; No Gnus
   :initialize 'custom-initialize-default
   :set 'message-tool-bar-update
@@ -7857,12 +7857,12 @@ Pre-defined symbols include `message-tool-bar-gnome' and
 
 (defcustom message-tool-bar-gnome
   '((ispell-message "spell" nil
-		    :vert-only t
-		    :visible (not flyspell-mode))
+            :vert-only t
+            :visible (not flyspell-mode))
     (flyspell-buffer "spell" t
-		     :vert-only t
-		     :visible flyspell-mode
-		     :help "Flyspell whole buffer")
+             :vert-only t
+             :visible flyspell-mode
+             :help "Flyspell whole buffer")
     (message-send-and-exit "mail/send" t :label "Send")
     (message-dont-send "mail/save-draft")
     (mml-attach-file "attach" mml-mode-map :vert-only t)
@@ -7902,7 +7902,7 @@ See `gmm-tool-bar-from-list' for details on the format of the list."
 
 (defcustom message-tool-bar-zap-list
   '(new-file open-file dired kill-buffer write-file
-	     print-buffer customize help)
+         print-buffer customize help)
   "List of icon items from the global tool bar.
 These items are not displayed on the message mode tool bar.
 
@@ -7915,22 +7915,22 @@ See `gmm-tool-bar-from-list' for the format of the list."
 
 (defvar image-load-path)
 (declare-function image-load-path-for-library "image"
-		  (library image &optional path no-error))
+          (library image &optional path no-error))
 
 (defun message-make-tool-bar (&optional force)
   "Make a message mode tool bar from `message-tool-bar-list'.
 When FORCE, rebuild the tool bar."
   (when (and (boundp 'tool-bar-mode)
-	     tool-bar-mode
-	     (or (not message-tool-bar-map) force))
+         tool-bar-mode
+         (or (not message-tool-bar-map) force))
     (setq message-tool-bar-map
-	  (let* ((load-path
-		  (image-load-path-for-library
-		   "message" "mail/save-draft.xpm" nil t))
-		 (image-load-path (cons (car load-path) image-load-path)))
-	    (gmm-tool-bar-from-list message-tool-bar
-				    message-tool-bar-zap-list
-				    'message-mode-map))))
+      (let* ((load-path
+          (image-load-path-for-library
+           "message" "mail/save-draft.xpm" nil t))
+         (image-load-path (cons (car load-path) image-load-path)))
+        (gmm-tool-bar-from-list message-tool-bar
+                    message-tool-bar-zap-list
+                    'message-mode-map))))
   message-tool-bar-map)
 
 ;;; Group name completion.
@@ -7944,11 +7944,11 @@ When FORCE, rebuild the tool bar."
 (defcustom message-completion-alist
   ;; FIXME: Make it possible to use the standard completion UI.
   (list (cons message-newgroups-header-regexp 'message-expand-group)
-	'("^\\(Resent-\\)?\\(To\\|B?Cc\\):" . message-expand-name)
-	'("^\\(Reply-To\\|From\\|Mail-Followup-To\\|Mail-Copies-To\\):"
-	  . message-expand-name)
-	'("^\\(Disposition-Notification-To\\|Return-Receipt-To\\):"
-	  . message-expand-name))
+    '("^\\(Resent-\\)?\\(To\\|B?Cc\\):" . message-expand-name)
+    '("^\\(Reply-To\\|From\\|Mail-Followup-To\\|Mail-Copies-To\\):"
+      . message-expand-name)
+    '("^\\(Disposition-Notification-To\\|Return-Receipt-To\\):"
+      . message-expand-name))
   "Alist of (RE . FUN).  Use FUN for completion on header lines matching RE."
   :version "22.1"
   :group 'message
@@ -7968,7 +7968,7 @@ If nil, the function bound in `text-mode-map' or `global-map' is executed."
   :group 'message
   :link '(custom-manual "(message)Various Commands")
   :type '(choice (const nil)
-		 function))
+         function))
 
 (declare-function mail-abbrev-in-expansion-header-p "mailabbrev" ())
 
@@ -7993,8 +7993,8 @@ regular text mode tabbing command."
 (defun message-completion-function ()
   (let ((alist message-completion-alist))
     (while (and alist
-		(let ((mail-abbrev-mode-regexp (caar alist)))
-		  (not (mail-abbrev-in-expansion-header-p))))
+        (let ((mail-abbrev-mode-regexp (caar alist)))
+          (not (mail-abbrev-in-expansion-header-p))))
       (setq alist (cdr alist)))
     (when (cdar alist)
       (let ((fun (cdar alist)))
@@ -8005,44 +8005,44 @@ regular text mode tabbing command."
 (defun message-expand-group ()
   "Expand the group name under point."
   (let ((b (save-excursion
-	     (save-restriction
-	       (narrow-to-region
-		(save-excursion
-		  (beginning-of-line)
-		  (skip-chars-forward "^:")
-		  (1+ (point)))
-		(point))
-	       (skip-chars-backward "^, \t\n") (point))))
-	(completion-ignore-case t)
-	(e (progn (skip-chars-forward "^,\t\n ") (point)))
-	group collection)
+         (save-restriction
+           (narrow-to-region
+        (save-excursion
+          (beginning-of-line)
+          (skip-chars-forward "^:")
+          (1+ (point)))
+        (point))
+           (skip-chars-backward "^, \t\n") (point))))
+    (completion-ignore-case t)
+    (e (progn (skip-chars-forward "^,\t\n ") (point)))
+    group collection)
     (when (and (boundp 'gnus-active-hashtb)
-	       gnus-active-hashtb)
+           gnus-active-hashtb)
       (mapatoms
        (lambda (symbol)
-	 (setq group (symbol-name symbol))
-	 (push (if (string-match "[^\000-\177]" group)
-		   (gnus-group-decoded-name group)
-		 group)
-	       collection))
+     (setq group (symbol-name symbol))
+     (push (if (string-match "[^\000-\177]" group)
+           (gnus-group-decoded-name group)
+         group)
+           collection))
        gnus-active-hashtb))
     (completion-in-region b e collection)))
 
 (defun message-expand-name ()
   (cond ((and (memq 'eudc message-expand-name-databases)
-		    (boundp 'eudc-protocol)
-		    eudc-protocol)
-	 (eudc-expand-inline))
-	((and (memq 'bbdb message-expand-name-databases)
-	      (fboundp 'bbdb-complete-name))
+            (boundp 'eudc-protocol)
+            eudc-protocol)
+     (eudc-expand-inline))
+    ((and (memq 'bbdb message-expand-name-databases)
+          (fboundp 'bbdb-complete-name))
          (let ((starttick (buffer-modified-tick)))
            (or (bbdb-complete-name)
                ;; Apparently, bbdb-complete-name can return nil even when
                ;; completion took place.  So let's double check the buffer was
                ;; not modified.
                (/= starttick (buffer-modified-tick)))))
-	(t
-	 (expand-abbrev))))
+    (t
+     (expand-abbrev))))
 
 ;;; Help stuff.
 
@@ -8051,14 +8051,14 @@ regular text mode tabbing command."
 If SHOW is non-nil, the arguments TEXT... are displayed in a temp buffer.
 The following arguments may contain lists of values."
   (if (and show
-	   (setq text (message-flatten-list text)))
+       (setq text (message-flatten-list text)))
       (save-window-excursion
         (with-output-to-temp-buffer " *MESSAGE information message*"
           (with-current-buffer " *MESSAGE information message*"
-	    (fundamental-mode)
-	    (mapc 'princ text)
-	    (goto-char (point-min))))
-	(funcall ask question))
+        (fundamental-mode)
+        (mapc 'princ text)
+        (goto-char (point-min))))
+    (funcall ask question))
     (funcall ask question)))
 
 (defun message-flatten-list (list)
@@ -8067,9 +8067,9 @@ The following arguments may contain lists of values."
 \(message-flatten-list \\='(1 (2 3 (4 5 (6))) 7))
 => (1 2 3 4 5 6 7)"
   (cond ((consp list)
-	 (apply 'append (mapcar 'message-flatten-list list)))
-	(list
-	 (list list))))
+     (apply 'append (mapcar 'message-flatten-list list)))
+    (list
+     (list list))))
 
 (defun message-generate-new-buffer-clone-locals (name &optional varstr)
   "Create and return a buffer with name based on NAME using `generate-new-buffer'.
@@ -8084,21 +8084,21 @@ regexp VARSTR."
 (defun message-clone-locals (buffer &optional varstr)
   "Clone the local variables from BUFFER to the current buffer."
   (let ((locals (with-current-buffer buffer (buffer-local-variables)))
-	(regexp "^gnus\\|^nn\\|^message\\|^sendmail\\|^smtp\\|^user-mail-address"))
+    (regexp "^gnus\\|^nn\\|^message\\|^sendmail\\|^smtp\\|^user-mail-address"))
     (mapcar
      (lambda (local)
        (when (and (consp local)
-		  (car local)
-		  (string-match regexp (symbol-name (car local)))
-		  (or (null varstr)
-		      (string-match varstr (symbol-name (car local)))))
-	 (ignore-errors
-	   ;; Cloning message-default-charset could cause an already
-	   ;; encoded text to be encoded again, yielding raw bytes
-	   ;; instead of characters in the message.
-	   (unless (eq 'message-default-charset (car local))
-	     (set (make-local-variable (car local))
-		  (cdr local))))))
+          (car local)
+          (string-match regexp (symbol-name (car local)))
+          (or (null varstr)
+              (string-match varstr (symbol-name (car local)))))
+     (ignore-errors
+       ;; Cloning message-default-charset could cause an already
+       ;; encoded text to be encoded again, yielding raw bytes
+       ;; instead of characters in the message.
+       (unless (eq 'message-default-charset (car local))
+         (set (make-local-variable (car local))
+          (cdr local))))))
      locals)))
 
 ;;;
@@ -8108,52 +8108,52 @@ regexp VARSTR."
 (defun message-encode-message-body ()
   (unless message-inhibit-body-encoding
     (let ((mail-parse-charset (or mail-parse-charset
-				  message-default-charset))
-	  (case-fold-search t)
-	  lines content-type-p)
+                  message-default-charset))
+      (case-fold-search t)
+      lines content-type-p)
       (message-goto-body)
       (save-restriction
-	(narrow-to-region (point) (point-max))
-	(let ((new (mml-generate-mime)))
-	  (when new
-	    (delete-region (point-min) (point-max))
-	    (insert new)
-	    (goto-char (point-min))
-	    (if (eq (aref new 0) ?\n)
-		(delete-char 1)
-	      (search-forward "\n\n")
-	      (setq lines (buffer-substring (point-min) (1- (point))))
-	      (delete-region (point-min) (point))))))
+    (narrow-to-region (point) (point-max))
+    (let ((new (mml-generate-mime)))
+      (when new
+        (delete-region (point-min) (point-max))
+        (insert new)
+        (goto-char (point-min))
+        (if (eq (aref new 0) ?\n)
+        (delete-char 1)
+          (search-forward "\n\n")
+          (setq lines (buffer-substring (point-min) (1- (point))))
+          (delete-region (point-min) (point))))))
       (save-restriction
-	(message-narrow-to-headers-or-head)
-	(message-remove-header "Mime-Version")
-	(goto-char (point-max))
-	(insert "MIME-Version: 1.0\n")
-	(when lines
-	  (insert lines))
-	(setq content-type-p
-	      (or mml-boundary
-		  (re-search-backward "^Content-Type:" nil t))))
+    (message-narrow-to-headers-or-head)
+    (message-remove-header "Mime-Version")
+    (goto-char (point-max))
+    (insert "MIME-Version: 1.0\n")
+    (when lines
+      (insert lines))
+    (setq content-type-p
+          (or mml-boundary
+          (re-search-backward "^Content-Type:" nil t))))
       (save-restriction
-	(message-narrow-to-headers-or-head)
-	(message-remove-first-header "Content-Type")
-	(message-remove-first-header "Content-Transfer-Encoding"))
+    (message-narrow-to-headers-or-head)
+    (message-remove-first-header "Content-Type")
+    (message-remove-first-header "Content-Transfer-Encoding"))
       ;; We always make sure that the message has a Content-Type
       ;; header.  This is because some broken MTAs and MUAs get
       ;; awfully confused when confronted with a message with a
       ;; MIME-Version header and without a Content-Type header.  For
       ;; instance, Solaris' /usr/bin/mail.
       (unless content-type-p
-	(goto-char (point-min))
-	;; For unknown reason, MIME-Version doesn't exist.
-	(when (re-search-forward "^MIME-Version:" nil t)
-	  (forward-line 1)
-	  (insert "Content-Type: text/plain; charset=us-ascii\n"))))))
+    (goto-char (point-min))
+    ;; For unknown reason, MIME-Version doesn't exist.
+    (when (re-search-forward "^MIME-Version:" nil t)
+      (forward-line 1)
+      (insert "Content-Type: text/plain; charset=us-ascii\n"))))))
 
 (defun message-read-from-minibuffer (prompt &optional initial-contents)
   "Read from the minibuffer while providing abbrev expansion."
   (let ((minibuffer-setup-hook 'mail-abbrevs-setup)
-	(minibuffer-local-map message-minibuffer-local-map))
+    (minibuffer-local-map message-minibuffer-local-map))
     (read-from-minibuffer prompt initial-contents)))
 
 (defun message-use-alternative-email-as-from ()
@@ -8162,11 +8162,11 @@ address in `message-alternative-emails', looking at To, Cc and
 From headers in the original article."
   (require 'mail-utils)
   (let* ((fields '("To" "Cc" "From"))
-	 (emails
-	  (message-tokenize-header
-	   (mail-strip-quoted-names
-	    (mapconcat 'message-fetch-reply-field fields ","))))
-	 (email
+     (emails
+      (message-tokenize-header
+       (mail-strip-quoted-names
+        (mapconcat 'message-fetch-reply-field fields ","))))
+     (email
           (cond ((functionp message-alternative-emails)
                  (car (cl-remove-if-not message-alternative-emails emails)))
                 (t (cl-loop for email in emails
@@ -8176,7 +8176,7 @@ From headers in the original article."
       (message-remove-header "From")
       (goto-char (point-max))
       (insert "From: " (let ((user-mail-address email)) (message-make-from))
-	      "\n"))))
+          "\n"))))
 
 (defun message-options-get (symbol)
   (cdr (assq symbol message-options)))
@@ -8184,69 +8184,69 @@ From headers in the original article."
 (defun message-options-set (symbol value)
   (let ((the-cons (assq symbol message-options)))
     (if the-cons
-	(if value
-	    (setcdr the-cons value)
-	  (setq message-options (delq the-cons message-options)))
+    (if value
+        (setcdr the-cons value)
+      (setq message-options (delq the-cons message-options)))
       (and value
-	   (push (cons symbol value) message-options))))
+       (push (cons symbol value) message-options))))
   value)
 
 (defun message-options-set-recipient ()
   (save-restriction
     (message-narrow-to-headers-or-head)
     (message-options-set 'message-sender
-			 (mail-strip-quoted-names
-			  (message-fetch-field "from")))
+             (mail-strip-quoted-names
+              (message-fetch-field "from")))
     (message-options-set 'message-recipients
-			 (mail-strip-quoted-names
-			  (let ((to (message-fetch-field "to"))
-				(cc (message-fetch-field "cc"))
-				(bcc (message-fetch-field "bcc")))
-			    (concat
-			     (or to "")
-			     (if (and to cc) ", ")
-			     (or cc "")
-			     (if (and (or to cc) bcc) ", ")
-			     (or bcc "")))))))
+             (mail-strip-quoted-names
+              (let ((to (message-fetch-field "to"))
+                (cc (message-fetch-field "cc"))
+                (bcc (message-fetch-field "bcc")))
+                (concat
+                 (or to "")
+                 (if (and to cc) ", ")
+                 (or cc "")
+                 (if (and (or to cc) bcc) ", ")
+                 (or bcc "")))))))
 
 (defun message-hide-headers ()
   "Hide headers based on the `message-hidden-headers' variable."
   (let ((regexps (if (stringp message-hidden-headers)
-		     (list message-hidden-headers)
-		   message-hidden-headers))
-	(inhibit-point-motion-hooks t)
-	(inhibit-modification-hooks t)
-	(end-of-headers (point-min)))
+             (list message-hidden-headers)
+           message-hidden-headers))
+    (inhibit-point-motion-hooks t)
+    (inhibit-modification-hooks t)
+    (end-of-headers (point-min)))
     (when regexps
       (save-excursion
-	(save-restriction
-	  (message-narrow-to-headers)
-	  (goto-char (point-min))
-	  (while (not (eobp))
-	    (if (not (message-hide-header-p regexps))
-		(message-next-header)
-	      (let ((begin (point))
-		    header header-len)
-		(message-next-header)
-		(setq header (buffer-substring begin (point))
-		      header-len (- (point) begin))
-		(delete-region begin (point))
-		(goto-char end-of-headers)
-		(insert header)
-		(setq end-of-headers
-		      (+ end-of-headers header-len))))))))
+    (save-restriction
+      (message-narrow-to-headers)
+      (goto-char (point-min))
+      (while (not (eobp))
+        (if (not (message-hide-header-p regexps))
+        (message-next-header)
+          (let ((begin (point))
+            header header-len)
+        (message-next-header)
+        (setq header (buffer-substring begin (point))
+              header-len (- (point) begin))
+        (delete-region begin (point))
+        (goto-char end-of-headers)
+        (insert header)
+        (setq end-of-headers
+              (+ end-of-headers header-len))))))))
     (narrow-to-region end-of-headers (point-max))))
 
 (defun message-hide-header-p (regexps)
   (let ((result nil)
-	(reverse nil))
+    (reverse nil))
     (when (eq (car regexps) 'not)
       (setq reverse t)
       (pop regexps))
     (dolist (regexp regexps)
       (setq result (or result (looking-at regexp))))
     (if reverse
-	(not result)
+    (not result)
       result)))
 
 (declare-function ecomplete-add-item "ecomplete" (type key text))
@@ -8257,12 +8257,12 @@ From headers in the original article."
   (dolist (header '("to" "cc" "from" "reply-to"))
     (let ((value (message-field-value header)))
       (dolist (string (mail-header-parse-addresses value 'raw))
-	(setq string
-	      (replace-regexp-in-string
-	       "\n" ""
-	       (replace-regexp-in-string "^ +\\| +$" "" string)))
-	(ecomplete-add-item 'mail (car (mail-header-parse-address string))
-			    string))))
+    (setq string
+          (replace-regexp-in-string
+           "\n" ""
+           (replace-regexp-in-string "^ +\\| +$" "" string)))
+    (ecomplete-add-item 'mail (car (mail-header-parse-address string))
+                string))))
   (ecomplete-save))
 
 (autoload 'ecomplete-display-matches "ecomplete")
@@ -8271,26 +8271,26 @@ From headers in the original article."
   (and (memq (char-after (point-at-bol)) '(?C ?T ?\t ? ))
        (message-point-in-header-p)
        (save-excursion
-	 (beginning-of-line)
-	 (while (and (memq (char-after) '(?\t ? ))
-		     (zerop (forward-line -1))))
-	 (looking-at "To:\\|Cc:"))))
+     (beginning-of-line)
+     (while (and (memq (char-after) '(?\t ? ))
+             (zerop (forward-line -1))))
+     (looking-at "To:\\|Cc:"))))
 
 (defun message-display-abbrev (&optional choose)
   "Display the next possible abbrev for the text before point."
   (interactive (list t))
   (when (message--in-tocc-p)
     (let* ((end (point))
-	   (start (save-excursion
-		    (and (re-search-backward "[\n\t ]" nil t)
-			 (1+ (point)))))
-	   (word (when start (buffer-substring start end)))
-	   (match (when (and word
-			     (not (zerop (length word))))
-		    (ecomplete-display-matches 'mail word choose))))
+       (start (save-excursion
+            (and (re-search-backward "[\n\t ]" nil t)
+             (1+ (point)))))
+       (word (when start (buffer-substring start end)))
+       (match (when (and word
+                 (not (zerop (length word))))
+            (ecomplete-display-matches 'mail word choose))))
       (when (and choose match)
-	(delete-region start end)
-	(insert match)))))
+    (delete-region start end)
+    (insert match)))))
 
 (defun message-ecomplete-capf ()
   "Return completion data for email addresses in Ecomplete.
@@ -8301,7 +8301,7 @@ Meant for use on `completion-at-point-functions'."
     (let ((end (save-excursion
                  (skip-chars-forward "^, \t\n")
                  (point)))
-	  (start (save-excursion
+      (start (save-excursion
                    (skip-chars-backward "^, \t\n")
                    (point))))
       `(,start ,end ,(ecomplete-completion-table 'mail)))))
@@ -8367,35 +8367,35 @@ The messages are separated by `message-form-letter-separator'.
 Header and body are separated by `mail-header-separator'."
   (interactive "P")
   (let ((sent 0) (skipped 0)
-	start end text
-	buff
-	to done)
+    start end text
+    buff
+    to done)
     (goto-char (point-min))
     (while (not done)
       (setq start (point)
-	    end (if (search-forward message-form-letter-separator nil t)
-		    (- (point) (length message-form-letter-separator) -1)
-		  (setq done t)
-		  (point-max)))
+        end (if (search-forward message-form-letter-separator nil t)
+            (- (point) (length message-form-letter-separator) -1)
+          (setq done t)
+          (point-max)))
       (setq text
-	    (buffer-substring-no-properties start end))
+        (buffer-substring-no-properties start end))
       (setq buff (generate-new-buffer "*mail - form letter*"))
       (with-current-buffer buff
-	(insert text)
-	(message-mode)
-	(setq to (message-fetch-field "To"))
-	(switch-to-buffer buff)
-	(when force
-	  (sit-for message-send-form-letter-delay))
-	(if (or force
-		  (y-or-n-p (format-message "Send message to `%s'? " to)))
-	    (progn
-	      (setq sent (1+ sent))
-	      (message-send-and-exit))
-	  (message "Message to `%s' skipped." to)
-	  (setq skipped (1+ skipped)))
-	(when (buffer-live-p buff)
-	  (kill-buffer buff))))
+    (insert text)
+    (message-mode)
+    (setq to (message-fetch-field "To"))
+    (switch-to-buffer buff)
+    (when force
+      (sit-for message-send-form-letter-delay))
+    (if (or force
+          (y-or-n-p (format-message "Send message to `%s'? " to)))
+        (progn
+          (setq sent (1+ sent))
+          (message-send-and-exit))
+      (message "Message to `%s' skipped." to)
+      (setq skipped (1+ skipped)))
+    (when (buffer-live-p buff)
+      (kill-buffer buff))))
     (message "%s message(s) sent, %s skipped." sent skipped)))
 
 (defun message-replace-header (header new-value &optional after force)
@@ -8409,8 +8409,8 @@ even if NEW-VALUE is empty."
       (message-remove-header header))
     (when (or force (> (length new-value) 0))
       (if after
-	  (message-position-on-field header after)
-	(message-position-on-field header))
+      (message-position-on-field header after)
+    (message-position-on-field header))
       (insert new-value))))
 
 (make-obsolete-variable
@@ -8418,16 +8418,16 @@ even if NEW-VALUE is empty."
  "Recipients are simplified by default" "27.1")
 (defcustom message-recipients-without-full-name
   (list "[email-masked]"
-	"[email-masked]"
-	"[email-masked]"
-	"[email-masked]"
-	"[email-masked]")
+    "[email-masked]"
+    "[email-masked]"
+    "[email-masked]"
+    "[email-masked]")
   "Mail addresses that have no full name.
 Used in `message-simplify-recipients'."
   ;; Maybe the addresses could be extracted from
   ;; `gnus-parameter-to-list-alist'?
   :type '(choice (const :tag "None" nil)
-		 (repeat string))
+         (repeat string))
   :version "23.1" ;; No Gnus
   :group 'message-headers)
 
@@ -8439,17 +8439,17 @@ Used in `message-simplify-recipients'."
      hdr
      (mapconcat
       (lambda (addrcomp)
-	(if (and message-recipients-without-full-name
-		 (string-match
-		  (regexp-opt message-recipients-without-full-name)
-		  (cadr addrcomp)))
-	    (cadr addrcomp)
-	  (if (car addrcomp)
-	      (message-make-from (car addrcomp) (cadr addrcomp))
-	    (cadr addrcomp))))
+    (if (and message-recipients-without-full-name
+         (string-match
+          (regexp-opt message-recipients-without-full-name)
+          (cadr addrcomp)))
+        (cadr addrcomp)
+      (if (car addrcomp)
+          (message-make-from (car addrcomp) (cadr addrcomp))
+        (cadr addrcomp))))
       (when (message-fetch-field hdr)
-	(mail-extract-address-components
-	 (message-fetch-field hdr) t))
+    (mail-extract-address-components
+     (message-fetch-field hdr) t))
       ", "))))
 
 ;;; multipart/related and HTML support.
@@ -8472,29 +8472,29 @@ Used in `message-simplify-recipients'."
     (save-excursion
       (goto-char (point-min))
       (while (not (eobp))
-	(when-let* ((props (get-text-property (point) 'display)))
-	  (when (and (consp props)
-		     (eq (car props) 'image))
-	    (put-text-property (point) (1+ (point)) 'display nil)
-	    (setq displayed t)))
-	(forward-char 1)))
+    (when-let* ((props (get-text-property (point) 'display)))
+      (when (and (consp props)
+             (eq (car props) 'image))
+        (put-text-property (point) (1+ (point)) 'display nil)
+        (setq displayed t)))
+    (forward-char 1)))
     (unless displayed
       (save-excursion
-	(goto-char (point-min))
-	(while (re-search-forward "<img.*src=\"\\([^\"]+\\).*>" nil t)
-	  (let ((string (match-string 0))
-		(file (match-string 1))
-		(edges (window-inside-pixel-edges
-			(get-buffer-window (current-buffer)))))
-	    (delete-region (match-beginning 0) (match-end 0))
-	    (insert-image
-	     (create-image
-	      file 'imagemagick nil
-	      :max-width (truncate
-			  (* 0.7 (- (nth 2 edges) (nth 0 edges))))
-	      :max-height (truncate
-			   (* 0.5 (- (nth 3 edges) (nth 1 edges)))))
-	     string)))))))
+    (goto-char (point-min))
+    (while (re-search-forward "<img.*src=\"\\([^\"]+\\).*>" nil t)
+      (let ((string (match-string 0))
+        (file (match-string 1))
+        (edges (window-inside-pixel-edges
+            (get-buffer-window (current-buffer)))))
+        (delete-region (match-beginning 0) (match-end 0))
+        (insert-image
+         (create-image
+          file 'imagemagick nil
+          :max-width (truncate
+              (* 0.7 (- (nth 2 edges) (nth 0 edges))))
+          :max-height (truncate
+               (* 0.5 (- (nth 3 edges) (nth 1 edges)))))
+         string)))))))
 
 (provide 'message)
 
-- 
2.18.0