GNU bug report logs - #25828
25.1; remaining errors from shr calling set-window-buffer-p in dedicated window

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: David Bremner <david <at> tethera.net>
To: bug-gnu-emacs <at> gnu.org
Subject: 25.1;
 remaining errors from shr calling set-window-buffer-p in dedicated
 window
Date: Tue, 21 Feb 2017 07:34:39 -0400

[Message part 1 (text/plain, inline)]

In https://debbugs.gnu.org/cgi/bugreport.cgi?bug=24950 I reported an
error resulting from shr calling set-window-buffer-p in a dedicated
window. Eli provided a patch for that, which works great for that code
path. Unfortunately there are at least two more places in the shr code
with the same issue. A notmuch user reported crashes rendering html on
one of those other code paths. I have not produced a recipe for
duplicating the problem without notmuch, but copying Eli's patch into
these other two code paths fixes the problem. I have attached the diff
against emacs-25.2-rc1-14-gec4226d810.  Both added calls to
set-window-dedicated-p are inside save-window-excursion.  It occurs to
me that maybe save-window-excursion should call set-window-dedicated-p,
but I don't know the full implications.

[shr-diff.diff (text/x-diff, inline)]

diff --git a/lisp/net/shr.el b/lisp/net/shr.el
index 6c35a33c9c..2bc37c64bd 100644
--- a/lisp/net/shr.el
+++ b/lisp/net/shr.el
@@ -1993,6 +1993,9 @@ shr-pixel-buffer-width
     (if (get-buffer-window)
 	(car (window-text-pixel-size nil (point-min) (point-max)))
       (save-window-excursion
+        ;; Avoid errors if the selected window is a dedicated one,
+        ;; and they just want to insert a document into it.
+        (set-window-dedicated-p nil nil)
 	(set-window-buffer nil (current-buffer))
 	(car (window-text-pixel-size nil (point-min) (point-max)))))))
 
@@ -2036,6 +2039,9 @@ shr-render-td-1
 	    (shr-indentation 0))
 	(shr-descend dom))
       (save-window-excursion
+        ;; Avoid errors if the selected window is a dedicated one,
+        ;; and they just want to insert a document into it.
+        (set-window-dedicated-p nil nil)
 	(set-window-buffer nil (current-buffer))
 	(unless fill
 	  (setq natural-width

[Message part 3 (text/plain, inline)]

Configured using:
 'configure --build x86_64-linux-gnu --prefix=/usr
 --sharedstatedir=/var/lib --libexecdir=/usr/lib
 --localstatedir=/var/lib --infodir=/usr/share/info
 --mandir=/usr/share/man --with-pop=yes
 --enable-locallisppath=/etc/emacs25:/etc/emacs:/usr/local/share/emacs/25.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/25.1/site-lisp:/usr/share/emacs/site-lisp
 --with-sound=alsa --build x86_64-linux-gnu --prefix=/usr
 --sharedstatedir=/var/lib --libexecdir=/usr/lib
 --localstatedir=/var/lib --infodir=/usr/share/info
 --mandir=/usr/share/man --with-pop=yes
 --enable-locallisppath=/etc/emacs25:/etc/emacs:/usr/local/share/emacs/25.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/25.1/site-lisp:/usr/share/emacs/site-lisp
 --with-sound=alsa --with-x=yes --with-x-toolkit=gtk3
 --with-toolkit-scroll-bars 'CFLAGS=-g -O2
 -fdebug-prefix-map=/build/emacs25-Fs4LPA/emacs25-25.1+1=. -fstack-protector-strong
 -Wformat -Werror=format-security -Wall' 'CPPFLAGS=-Wdate-time
 -D_FORTIFY_SOURCE=2' LDFLAGS=-Wl,-z,relro'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11

Important settings:
  value of $LANG: en_CA.UTF-8
  locale-coding-system: utf-8-unix

Major mode: notmuch-show

Minor modes in effect:
  TeX-PDF-mode: t
  magit-auto-revert-mode: t
  global-git-commit-mode: t
  async-bytecomp-package-mode: t
  shell-dirtrack-mode: t
  diff-auto-refine-mode: t
  tracking-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  buffer-read-only: t
  line-number-mode: t
  visual-line-mode: t
  transient-mark-mode: t

Recent messages:
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c 0 is undefined
Stashed: id:87y40kw3f2.fsf <at> tethera.net

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/usr/share/emacs25/site-lisp/auctex/context hides /usr/share/emacs/site-lisp/auctex/context
/usr/share/emacs25/site-lisp/auctex/tex-fold hides /usr/share/emacs/site-lisp/auctex/tex-fold
/usr/share/emacs25/site-lisp/auctex/multi-prompt hides /usr/share/emacs/site-lisp/auctex/multi-prompt
/usr/share/emacs25/site-lisp/auctex/toolbar-x hides /usr/share/emacs/site-lisp/auctex/toolbar-x
/usr/share/emacs25/site-lisp/auctex/latex hides /usr/share/emacs/site-lisp/auctex/latex

Features:
(shadow emacsbug browse-kill-ring pcmpl-unix pcmpl-gnu debian-bug
debian-changelog-mode calccomp calc-arith calc-misc calc-map calc-stat
calc-vec calc-aent dired-aux texmathp preview prv-emacs tex-buf
font-latex latex tex-style tex dbus xml tex-mode latexenc bookmark pp
org-capture gnus-art mm-uu mml2015 gnus-sum gnus-group gnus-undo
gnus-start gnus-cloud nnimap nnmail mail-source utf7 netrc nnoo
gnus-spec gnus-int gnus-range gnus-win gnus gnus-ems nnheader inline url
url-proxy url-privacy url-expand url-methods url-history url-cookie
url-domsuf rst derived disp-table org-colview calc-undo calc-alg
calc-ext calc-menu calc calc-loaddefs calc-macs org-table filecache
network-stream nsm starttls racket-mode racket-bug-report
racket-collection tq racket-profile racket-imenu imenu racket-edit
hideshow racket-complete racket-repl ido racket-common racket-indent
racket-font-lock racket-util racket-keywords-and-builtins racket-custom
parse-time qp tabify ledger-mode ledger-check ledger-schedule
ledger-xact ledger-texi ledger-test ledger-sort ledger-report
ledger-reconcile ledger-post ledger-occur ledger-init ledger-fontify
ledger-state ledger-navigate ledger-fonts ledger-exec ledger-context
ledger-complete ledger-commodities esh-var esh-io esh-cmd esh-opt
esh-ext esh-proc esh-groups eshell esh-module esh-mode esh-arg esh-util
cus-edit cus-start cus-load ledger-regex debug eieio-opt speedbar
sb-image ezimage dframe cal-move markdown-mode make-mode message-templ
sh-script smie executable grep magit-blame magit-stash magit-bisect
magit-remote magit-commit magit-sequence magit magit-apply magit-wip
magit-log magit-diff smerge-mode magit-core magit-autorevert autorevert
filenotify magit-process magit-margin magit-mode magit-git magit-section
magit-utils magit-popup git-commit log-edit pcvs-util add-log
with-editor async-bytecomp async tramp-sh whitespace compile misearch
multi-isearch cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles
cc-align cc-engine cc-vars cc-defs org-clock view cal-china lunar solar
cal-dst cal-bahai cal-islam cal-hebrew holidays hol-loaddefs cal-iso
vc-git org-rmail org-mhe org-irc org-info org-gnus org-docview doc-view
jka-compr image-mode org-bibtex bibtex org-bbdb org-w3m org-agenda
mm-archive url-util url-parse url-vars shr-color shr dom subr-x
browse-url sendmail sort company-files company-oddmuse company-keywords
company-etags etags xref project company-gtags company-dabbrev-code
company-dabbrev company-capf company-cmake company-ropemacs
company-xcode company-clang company-semantic company-eclim
company-template company-css company-nxml company-bbdb company mail-extr
edmacro kmacro notmuch-jump notmuch hl-line notmuch-message
notmuch-hello wid-edit notmuch-tree notmuch-show notmuch-print
notmuch-crypto notmuch-mua notmuch-draft notmuch-maildir-fcc
notmuch-address notmuch-company notmuch-parser notmuch-wash coolj
notmuch-query goto-addr icalendar diary-lib diary-loaddefs notmuch-tag
crm notmuch-lib notmuch-version notmuch-compat cl message dired rfc822
mml mailabbrev mail-utils gmm-utils mailheader mm-view mml-smime mml-sec
epg smime dig mm-decode mm-bodies mm-encode mailcap mail-parse rfc2231
rfc2047 rfc2045 ietf-drums cursor-sensor minibuffer-complete-cycle
server indirect-region tempo org-notmuch org-element avl-tree org
org-macro org-footnote org-pcomplete org-list org-faces org-entities
noutline outline org-version ob-emacs-lisp ob ob-tangle org-src ob-ref
ob-lob ob-table ob-keys ob-exp ob-comint tramp tramp-compat auth-source
cl-seq eieio eieio-core cl-macs gnus-util time-date mm-util help-fns
mail-prsvr password-cache tramp-loaddefs trampver shell pcomplete comint
ansi-color ob-core ob-eval org-compat org-macs org-loaddefs format-spec
find-func cal-menu calendar cal-loaddefs rx vc vc-dispatcher
circe-color-nicks color circe-chanop circe advice diff-mode
lui-irc-colors irc make-tls-process tls gnutls lcs lui-format lui
tracking shorten thingatpt paren flyspell ispell ring circe-compat
finder-inf muse-autoloads package epg-config seq seq-25 byte-opt gv
bytecomp byte-compile cl-extra help-mode easymenu cconv cl-loaddefs
pcase cl-lib debian-el debian-el-loaddefs s ucs-normalize org-install
haskell-mode-autoloads emacs-goodies-el emacs-goodies-custom
emacs-goodies-loaddefs easy-mmode dpkg-dev-el dpkg-dev-el-loaddefs
dash-functional dash preview-latex tex-site auto-loads mule-util tooltip
eldoc electric uniquify ediff-hook vc-hooks lisp-float-type mwheel x-win
term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe
tabulated-list newcomment elisp-mode lisp-mode prog-mode register page
menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock
syntax facemenu font-core frame cl-generic cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms
cp51932 hebrew greek romanian slovak czech european ethiopic indian
cyrillic chinese charscript case-table epa-hook jka-cmpr-hook help
simple abbrev minibuffer cl-preloaded nadvice loaddefs button faces
cus-face macroexp files text-properties overlay sha1 md5 base64 format
env code-pages mule custom widget hashtable-print-readable backquote
dbusbind inotify dynamic-setting system-font-setting font-render-setting
move-toolbar gtk x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 16 3519340 235888)
 (symbols 48 64348 2)
 (miscs 40 46989 3711)
 (strings 32 313297 125973)
 (string-bytes 1 12186097)
 (vectors 16 118270)
 (vector-slots 8 2459973 123628)
 (floats 8 5420 3349)
 (intervals 56 309816 4143)
 (buffers 976 335))

[signature.asc (application/pgp-signature, inline)]

Message #8 received at 25828 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: David Bremner <david <at> tethera.net>, Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 25828 <at> debbugs.gnu.org
Subject: Re: bug#25828: 25.1;
 remaining errors from shr calling set-window-buffer-p in dedicated
 window
Date: Sat, 25 Feb 2017 10:27:02 +0200

> From: David Bremner <david <at> tethera.net>
> Date: Tue, 21 Feb 2017 07:34:39 -0400
> 
> In https://debbugs.gnu.org/cgi/bugreport.cgi?bug=24950 I reported an
> error resulting from shr calling set-window-buffer-p in a dedicated
> window. Eli provided a patch for that, which works great for that code
> path. Unfortunately there are at least two more places in the shr code
> with the same issue. A notmuch user reported crashes rendering html on
> one of those other code paths. I have not produced a recipe for
> duplicating the problem without notmuch, but copying Eli's patch into
> these other two code paths fixes the problem. I have attached the diff
> against emacs-25.2-rc1-14-gec4226d810.  Both added calls to
> set-window-dedicated-p are inside save-window-excursion.  It occurs to
> me that maybe save-window-excursion should call set-window-dedicated-p,
> but I don't know the full implications.
> 
> diff --git a/lisp/net/shr.el b/lisp/net/shr.el
> index 6c35a33c9c..2bc37c64bd 100644
> --- a/lisp/net/shr.el
> +++ b/lisp/net/shr.el
> @@ -1993,6 +1993,9 @@ shr-pixel-buffer-width
>      (if (get-buffer-window)
>  	(car (window-text-pixel-size nil (point-min) (point-max)))
>        (save-window-excursion
> +        ;; Avoid errors if the selected window is a dedicated one,
> +        ;; and they just want to insert a document into it.
> +        (set-window-dedicated-p nil nil)
>  	(set-window-buffer nil (current-buffer))
>  	(car (window-text-pixel-size nil (point-min) (point-max)))))))
>  
> @@ -2036,6 +2039,9 @@ shr-render-td-1
>  	    (shr-indentation 0))
>  	(shr-descend dom))
>        (save-window-excursion
> +        ;; Avoid errors if the selected window is a dedicated one,
> +        ;; and they just want to insert a document into it.
> +        (set-window-dedicated-p nil nil)
>  	(set-window-buffer nil (current-buffer))
>  	(unless fill
>  	  (setq natural-width

Lars, any objections to pushing this?

Message #13 received at 25828-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: larsi <at> gnus.org
Cc: david <at> tethera.net, 25828-done <at> debbugs.gnu.org
Subject: Re: bug#25828: 25.1;
 remaining errors from shr calling set-window-buffer-p in dedicated
 window
Date: Sat, 04 Mar 2017 12:21:30 +0200

> Date: Sat, 25 Feb 2017 10:27:02 +0200
> From: Eli Zaretskii <eliz <at> gnu.org>
> Cc: 25828 <at> debbugs.gnu.org
> 
> Lars, any objections to pushing this?

No further comments, so I pushed these changes to the master branch,
and I'm marking this bug done.

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