GNU bug report logs - #37134
27.0.50; in LaTeX mode, font-lock / bracket matching on \url behaves incorrectly

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Package: emacs;

Reported by: Vincent Lefevre <vincent <at> vinc17.net>

Date: Wed, 21 Aug 2019 15:40:02 UTC

Severity: minor

Tags: fixed

Found in version 27.0.50

Fixed in version 27.1

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

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Report forwarded to bug-gnu-emacs <at> gnu.org:
bug#37134; Package emacs. (Wed, 21 Aug 2019 15:40:02 GMT) Full text and rfc822 format available.

Acknowledgement sent to Vincent Lefevre <vincent <at> vinc17.net>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Wed, 21 Aug 2019 15:40:02 GMT) Full text and rfc822 format available.

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

From: Vincent Lefevre <vincent <at> vinc17.net>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.0.50; in LaTeX mode, font-lock / bracket matching on \url
 behaves incorrectly
Date: Wed, 21 Aug 2019 17:39:50 +0200
The "%" character is sometimes use in URL's, thus in \url as a real
character, but the LaTeX mode thinks that's beginning a comment: %
and the following characters in the line are colorized as a comment,
and } isn't seen as a closing bracket. Example:

  \url{http://localhost/#foo%20bar}

/usr/share/texlive/texmf-dist/tex/latex/url/url.sty says:

% A form of \verb that allows linebreaks at certain characters or
% combinations of characters, accepts reconfiguration, and can usually
% be used in the argument to another command.  It is intended for email
% addresses, hypertext links, directories/paths, etc., which normally
% have no spaces.  The font may be selected using the \urlstyle command,
% and new url-like commands can be defined using \urldef.
%
% Usage:    Conditions:
% \url{ }   If the argument contains any "%" or "^^", or ends with
%           "\", it can't be used in the argument to another command.
%           The argument must not contain unbalanced braces.
% \url|  |  ...where "|" is any character not used in the argument and not
%           "{" or a space.  The same restrictions as above except that the
%           argument may contain unbalanced braces.
[...]


In GNU Emacs 27.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.10)
 of 2019-08-20 built on cventin
Repository revision: 50dc4ca8d02a466a7236765edf83ae7cfb02d74c
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12004000
System Description: Debian GNU/Linux bullseye/sid

Recent messages:
Loading /home/vlefevre/share/emacs/site-lisp/mutteditor.el (source)...done
Loading time...done
For information about GNU Emacs and the GNU system, type C-h C-a.

Configured using:
 'configure --prefix=/usr/local/emacs-trunk'

Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND GPM DBUS GSETTINGS GLIB NOTIFY INOTIFY
ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE HARFBUZZ M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM THREADS LIBSYSTEMD PDUMPER LCMS2
GMP

Important settings:
  value of $LC_COLLATE: POSIX
  value of $LC_CTYPE: en_US.UTF-8
  value of $LC_TIME: en_DK
  value of $LANG: POSIX
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  display-time-mode: t
  show-paren-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  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
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
None found.

Features:
(shadow sort mail-extr warnings emacsbug message rmc puny dired
dired-loaddefs format-spec rfc822 mml easymenu mml-sec password-cache
epa derived epg epg-config gnus-util rmail rmail-loaddefs
text-property-search time-date subr-x seq byte-opt gv bytecomp
byte-compile cconv mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util mail-prsvr mail-utils time cus-start cus-load paren cc-styles
cc-align cc-engine cc-vars cc-defs edmacro kmacro cl-loaddefs cl-lib
tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type
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 elisp-mode
lisp-mode prog-mode register page menu-bar rfn-eshadow isearch timer
select scroll-bar mouse jit-lock font-lock syntax facemenu font-core
term/tty-colors 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 composite charscript charprop case-table epa-hook jka-cmpr-hook
help simple abbrev obarray 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 threads dbusbind inotify lcms2 dynamic-setting
system-font-setting font-render-setting move-toolbar gtk x-toolkit x
multi-tty make-network-process emacs)

Memory information:
((conses 16 65438 5242)
 (symbols 48 8743 1)
 (strings 32 20756 1564)
 (string-bytes 1 700929)
 (vectors 16 11315)
 (vector-slots 8 144088 8254)
 (floats 8 24 36)
 (intervals 56 217 0)
 (buffers 992 12))




Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#37134; Package emacs. (Wed, 30 Oct 2019 20:08:02 GMT) Full text and rfc822 format available.

Message #8 received at 37134 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Vincent Lefevre <vincent <at> vinc17.net>
Cc: 37134 <at> debbugs.gnu.org
Subject: Re: 27.0.50; in LaTeX mode, font-lock / bracket matching on \url
 behaves incorrectly
Date: Wed, 30 Oct 2019 21:07:40 +0100
Vincent Lefevre <vincent <at> vinc17.net> writes:

> The "%" character is sometimes use in URL's, thus in \url as a real
> character, but the LaTeX mode thinks that's beginning a comment: %
> and the following characters in the line are colorized as a comment,
> and } isn't seen as a closing bracket. Example:
>
>   \url{http://localhost/#foo%20bar}

I've now sort of fixed this in Emacs 27 -- the "}" character still has
the wrong face, but the rest has the correct tex-verbatim face.

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




Added tag(s) fixed. Request was from Lars Ingebrigtsen <larsi <at> gnus.org> to control <at> debbugs.gnu.org. (Wed, 30 Oct 2019 20:08:02 GMT) Full text and rfc822 format available.

bug marked as fixed in version 27.1, send any further explanations to 37134 <at> debbugs.gnu.org and Vincent Lefevre <vincent <at> vinc17.net> Request was from Lars Ingebrigtsen <larsi <at> gnus.org> to control <at> debbugs.gnu.org. (Wed, 30 Oct 2019 20:08:02 GMT) Full text and rfc822 format available.

bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Thu, 28 Nov 2019 12:24:07 GMT) Full text and rfc822 format available.

This bug report was last modified 4 years and 123 days ago.

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