GNU bug report logs - #53716
29.0.50; Failure to parse addresses with angle-brackets without display names

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

From: Michael Welsh Duggan <mwd <at> md5i.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.0.50; Failure to parse addresses with angle-brackets without
 display names
Date: Tue, 01 Feb 2022 22:40:12 -0500

Attempting to send an email to an address like <foo <at> example.com> without
an attached display name causes the address to be flagged as suspicious.

Recipe from emacs -Q:

    C-x m
    <foo <at> example.com>
    C-n Test
    C-c C-c

This results in Emacs notifying me that there is a suspicious address.

According to RFC 5322, an address can be a mailbox, which can be a
name-addr, which is an optional display-name followed by an angle-addr.
So an address like

    <foo <at> example.com>

without an attached display name should be parsed as a valid address.
The problem appears to be caused by a bug in `ietf-drums-parse-address'.
Near the end of the function it calls `rfc2047-decode-string' on the
current `display-string', which is, at this point, `nil'.


In GNU Emacs 29.0.50 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo version 1.16.0)
 of 2022-01-31 built on miko
Repository revision: cce477cad7ffffbfc1a21e9dd711b32f8e2b3ea3
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12013000
System Description: Debian GNU/Linux bookworm/sid

Configured using:
 'configure --without-toolkit-scroll-bars --with-x-toolkit=lucid
 --with-native-compilation --with-xinput2'

Configured features:
CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG JSON
LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NATIVE_COMP
NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF X11
XAW3D XDBE XIM XINPUT2 XPM LUCID ZLIB

Important settings:
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Message

Features:
(goto-addr bug-reference magit-extras pcase edebug gnus-fun shr-color
color grep gud pcmpl-unix shadow emacsbug cus-start cl-print debug
backtrace apropos shortdoc help-fns radix-tree mailalias smtpmail
sendmail vc-git vc-dispatcher dabbrev org-element avl-tree generator
ol-eww eww xdg url-queue thingatpt mm-url ol-rmail ol-mhe ol-irc ol-info
ol-gnus nnselect gnus-search eieio-opt speedbar ezimage dframe
ol-docview doc-view jka-compr image-mode exif ol-bibtex ol-bbdb ol-w3m
ol-doi org-link-doi org ob ob-tangle ob-ref ob-lob ob-table ob-exp
org-macro org-footnote org-src ob-comint org-pcomplete org-list
org-faces org-entities noutline outline org-version ob-emacs-lisp
ob-core ob-eval org-table oc-basic bibtex ol org-keys oc org-compat
advice org-macs org-loaddefs find-func cal-menu calendar cal-loaddefs
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uni-scripts idna-mapping ucs-normalize uni-confusable textsec-check
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gnus-topic cursor-sensor nndraft nnmh nnfolder utf-7 epa-file
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magit-section magit-utils crm dash nnimap nnmail gnus-int mail-source
gnus-range message yank-media rfc822 mml mml-sec epa mm-decode mm-bodies
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nnheader gnus-util time-date mail-utils range gnus-o365-oauth2 oauth2
url-http url-auth mail-parse rfc2231 rfc2047 rfc2045 mm-util ietf-drums
mail-prsvr url-gw nsm rmc puny plstore generated generic-x epg rfc6068
epg-config ediff ediff-merg ediff-mult ediff-wind ediff-diff ediff-help
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text-property-search comint ring ansi-color cc-mode cc-fonts cc-guess
cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs derived
debian-el info package browse-url url url-proxy url-privacy url-expand
url-methods url-history url-cookie url-domsuf url-util mailcap
url-handlers url-parse auth-source cl-seq eieio eieio-core cl-macs
eieio-loaddefs password-cache json map url-vars seq gv subr-x byte-opt
bytecomp byte-compile cconv cl-loaddefs cl-lib iso-transl tooltip eldoc
paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode
mwheel term/x-win x-win term/common-win x-dnd tool-bar dnd fontset image
regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode
prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu
timer select scroll-bar mouse jit-lock font-lock syntax font-core
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cyrillic chinese composite emoji-zwj charscript charprop case-table
epa-hook jka-cmpr-hook help simple abbrev obarray cl-preloaded nadvice
button loaddefs faces cus-face macroexp files window text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads dbusbind inotify lcms2
dynamic-setting system-font-setting font-render-setting cairo x-toolkit
xinput2 x multi-tty make-network-process native-compile emacs)

-- 
Michael Welsh Duggan
(md5i <at> md5i.com)

Message #8 received at 53716 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Michael Welsh Duggan <mwd <at> md5i.com>
Cc: 53716 <at> debbugs.gnu.org
Subject: Re: bug#53716: 29.0.50; Failure to parse addresses with
 angle-brackets without display names
Date: Wed, 02 Feb 2022 19:07:23 +0100

Michael Welsh Duggan <mwd <at> md5i.com> writes:

> The problem appears to be caused by a bug in `ietf-drums-parse-address'.
> Near the end of the function it calls `rfc2047-decode-string' on the
> current `display-string', which is, at this point, `nil'.

I've now fixed this in Emacs 29.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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