GNU bug report logs - #28939
27.0.50; CC-Mode: (C++) Comment directly after quote breaks following lines

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

From: Bastian Beischer <bastian.beischer <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.0.50;
 CC-Mode: (C++) Comment directly after quote breaks following lines
Date: Sun, 22 Oct 2017 10:12:17 +0200

The following file is incorrectly parsed by CC-Mode (font-lock
considers everything after //bar to be a comment, for example):

#include "foo.h"//bar
int main(int argc, char** argv) {
  return 0;
}

This problem is reproduceable from emacs -Q when inserting the above
into a c++-mode buffer.

This is with emacs built from 94281c9a1cc0f756841fdc9b266657853df94a29
on master, but I guess this is relevant for emacs-26 as well.

Cheers
Bastian

In GNU Emacs 27.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.24)
 of 2017-10-17 built on bastian-desktop
Repository revision: 94281c9a1cc0f756841fdc9b266657853df94a29
Windowing system distributor 'The X.Org Foundation', version 11.0.11905000
Recent messages:
Error during redisplay: (eval (format " Projectile[%s(%s)]" (projectile-project-name))) signaled (error "Not enough arguments for format string") [6 times]
Mark set
Error during redisplay: (eval (format " Projectile[%s(%s)]" (projectile-project-name))) signaled (error "Not enough arguments for format string")
Mark set
Error during redisplay: (eval (format " Projectile[%s(%s)]" (projectile-project-name))) signaled (error "Not enough arguments for format string") [2 times]
Saving file /home/beischer/bla.C...
Wrote /home/beischer/bla.C
Error during redisplay: (eval (format " Projectile[%s(%s)]" (projectile-project-name))) signaled (error "Not enough arguments for format string") [27 times]
Mark set
Error during redisplay: (eval (format " Projectile[%s(%s)]" (projectile-project-name))) signaled (error "Not enough arguments for format string") [6 times]

Configured using:
 'configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib
 --localstatedir=/var --mandir=/usr/share/man --with-gameuser=:games
 --with-sound=alsa --with-xft --with-modules --with-x-toolkit=gtk3
 --without-gconf --without-gsettings --without-gpm --without-m17n-flt
 --with-xwidgets --without-compress-install 'CFLAGS=-march=native -O2
 -pipe -fstack-protector-strong -fno-plt' CPPFLAGS=-D_FORTIFY_SOURCE=2
 LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS NOTIFY ACL GNUTLS
LIBXML2 FREETYPE LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 MODULES
XWIDGETS LIBSYSTEMD LCMS2

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

Major mode: C++//l

Minor modes in effect:
  whitespace-mode: t
  subword-mode: t
  function-args-mode: t
  helm-fuzzier-mode: t
  helm-flx-mode: t
  projectile-mode: t
  yas-global-mode: t
  yas-minor-mode: t
  window-numbering-mode: t
  magit-auto-revert-mode: t
  global-git-commit-mode: t
  diff-auto-refine-mode: t
  async-bytecomp-package-mode: t
  flx-ido-mode: t
  ido-everywhere: t
  global-srecode-minor-mode: t
  srecode-minor-mode: t
  global-semanticdb-minor-mode: t
  global-semantic-idle-scheduler-mode: t
  semantic-idle-scheduler-mode: t
  semantic-decoration-mode: t
  global-semantic-decoration-mode: t
  semantic-highlight-func-mode: t
  global-semantic-highlight-func-mode: t
  semantic-stickyfunc-mode: t
  global-semantic-stickyfunc-mode: t
  semantic-show-parser-state-mode: t
  global-semantic-show-parser-state-mode: t
  semantic-mode: t
  global-ede-mode: t
  ede-minor-mode: t
  shell-dirtrack-mode: t
  show-paren-mode: t
  global-hi-lock-mode: t
  hi-lock-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
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t
  hs-minor-mode: t

Load-path shadows:
/home/beischer/.emacs.d/cedet/lisp/speedbar/loaddefs hides /home/beischer/.emacs.d/cedet/lisp/cedet/loaddefs
/home/beischer/.emacs.d/elpa/cmake-mode-20160928.505/cmake-mode hides /usr/share/emacs/site-lisp/cmake-mode
/home/beischer/.emacs.d/cedet/lisp/speedbar/loaddefs hides /usr/share/emacs/27.0.50/lisp/loaddefs
/usr/share/emacs/site-lisp/various/buff-menu hides /usr/share/emacs/27.0.50/lisp/buff-menu
~/.emacs.d/lisp/vc-cvs hides /usr/share/emacs/27.0.50/lisp/vc/vc-cvs
~/.emacs.d/cc-mode/cc-engine hides /usr/share/emacs/27.0.50/lisp/progmodes/cc-engine
~/.emacs.d/cc-mode/cc-mode hides /usr/share/emacs/27.0.50/lisp/progmodes/cc-mode
~/.emacs.d/cc-mode/cc-cmds hides /usr/share/emacs/27.0.50/lisp/progmodes/cc-cmds
~/.emacs.d/cc-mode/cc-align hides /usr/share/emacs/27.0.50/lisp/progmodes/cc-align
~/.emacs.d/cc-mode/cc-vars hides /usr/share/emacs/27.0.50/lisp/progmodes/cc-vars
~/.emacs.d/cc-mode/cc-langs hides /usr/share/emacs/27.0.50/lisp/progmodes/cc-langs
~/.emacs.d/cc-mode/cc-awk hides /usr/share/emacs/27.0.50/lisp/progmodes/cc-awk
~/.emacs.d/cc-mode/cc-menus hides /usr/share/emacs/27.0.50/lisp/progmodes/cc-menus
~/.emacs.d/cc-mode/cc-styles hides /usr/share/emacs/27.0.50/lisp/progmodes/cc-styles
~/.emacs.d/cc-mode/cc-guess hides /usr/share/emacs/27.0.50/lisp/progmodes/cc-guess
~/.emacs.d/cc-mode/cc-bytecomp hides /usr/share/emacs/27.0.50/lisp/progmodes/cc-bytecomp
~/.emacs.d/cc-mode/cc-fonts hides /usr/share/emacs/27.0.50/lisp/progmodes/cc-fonts
~/.emacs.d/cc-mode/cc-defs hides /usr/share/emacs/27.0.50/lisp/progmodes/cc-defs

Features:
(shadow sort mail-extr emacsbug sendmail semantic/tag-write misearch
multi-isearch ede/locate semantic/tag-file whitespace cap-words
superword subword semantic/db-file semantic/adebug eieio-datadebug
data-debug cedet-files function-args json map semantic-directory
semantic/ia ido-completing-read+ memoize cus-edit minibuf-eldef
company-oddmuse company-keywords company-etags company-gtags
company-dabbrev-code company-dabbrev company-files company-capf
company-cmake company-xcode company-clang company-semantic company-eclim
company-template company-css company-nxml company-bbdb company-edbi edbi
sql view jedi jedi-core python-environment epc ctable concurrent
deferred auto-complete popup cmake-project helm-fuzzier helm helm-source
helm-multi-match helm-lib helm-flx tempo url url-proxy url-privacy
url-expand url-methods url-history url-cookie url-domsuf url-util
mailcap xml-parse doxymacs projectile ibuf-ext ibuffer ibuffer-loaddefs
dropdown-list yasnippet elec-pair my-term term disp-table ehelp
etags-table etags xref project cmake-mode rx qt-pro pastebin
window-numbering company magit-topgit magit-obsolete magit-blame
magit-stash magit-bisect magit-remote magit-commit magit-sequence
magit-notes magit-worktree magit-branch magit-files magit-refs
magit-status magit esh-var esh-io esh-cmd esh-opt esh-ext esh-proc
esh-arg esh-groups eshell esh-module esh-mode esh-util magit-repos
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-popup git-commit magit-utils
vc-git diff-mode crm log-edit message rmc puny rfc822 mml mml-sec epa
derived epg gnus-util rmail rmail-loaddefs mm-decode mm-bodies mm-encode
mail-parse rfc2231 rfc2047 rfc2045 mm-util ietf-drums mail-prsvr
mailabbrev mail-utils gmm-utils mailheader pcvs-util add-log with-editor
cl-extra help-mode async-bytecomp async server buff-menu+ hideshow
flx-ido ido dired-x dired dired-loaddefs ede/cpp-root srecode/mode
semantic/senator srecode/insert srecode/filters srecode/args
semantic/db-mode f dash cl s semantic/bovine/c hideif
semantic/bovine/c-by semantic/lex-spp semantic/idle working fame
semantic/bovine/gcc semantic/dep semantic/bovine semantic/analyze/refs
semantic/decorate/include semantic/db-find semantic/db-ref
semantic/decorate/mode semantic/decorate pulse cedet-devel-load
cogre/srecode cogre cogre/picture-hack rect picture eieio-opt
srecode/find srecode/map semantic/edit srecode/srt-mode srecode/template
srecode/srt-wy semantic/wisent semantic/wisent/wisent srecode/ctxt
srecode/compile srecode/dictionary srecode/table srecode
semantic/canned-configs semantic/ia-sb semantic/analyze semantic/sort
semantic/scope semantic/analyze/fcn semantic/db semantic/ctxt
semantic/format semantic/tag-ls semantic/find semantic/util-modes
semantic/util semantic semantic/tag semantic/lex semantic/fw mode-local
sb-info ede/speedbar ede/files ede ede/detect ede/base ede/auto
ede/source eieio-compat eieio-base eieio-speedbar speedbar sb-image
ezimage dframe eieio-custom wid-edit cedet cedet-compat inversion
cedet-remove-builtin cc-mode cc-fonts cc-guess cc-menus cc-cmds
cc-styles cc-align cc-engine cc-vars cc-defs flymake-proc flymake subr-x
warnings ams-meeting org-element avl-tree generator org org-macro
org-footnote org-pcomplete org-list org-faces org-entities noutline
outline easy-mmode org-version ob-emacs-lisp ob ob-tangle org-src ob-ref
ob-lob ob-table ob-keys ob-exp ob-comint ob-core ob-eval org-compat
org-macs org-loaddefs find-func cal-menu calendar cal-loaddefs
calc-mouse calc-yank calc-ext calc calc-loaddefs calc-macs hide-lines
ivy flx delsel ivy-overlay ffap thingatpt vc-cvs vc vc-dispatcher pcase
finder-inf tex-site info package easymenu epg-config url-handlers
url-parse url-vars seq edmacro kmacro emacs-x-theme time-date tramp
tramp-compat tramp-loaddefs trampver ucs-normalize shell pcomplete
parse-time format-spec advice auth-source cl-seq eieio byte-opt bytecomp
byte-compile cconv eieio-core cl-macs gv eieio-loaddefs cl-loaddefs
cl-lib password-cache paren grep compile comint ansi-color ring linum
hi-lock cus-start cus-load mule-util 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 dbusbind inotify lcms2 dynamic-setting font-render-setting
xwidget-internal move-toolbar gtk x-toolkit x multi-tty
make-network-process emacs)

Memory information:
((conses 16 2011253 46749)
 (symbols 48 61049 3)
 (miscs 40 3352 2024)
 (strings 32 391097 6013)
 (string-bytes 1 8382878)
 (vectors 16 167928)
 (vector-slots 8 1867169 23438)
 (floats 8 234 385)
 (intervals 56 9521 514)
 (buffers 992 21))

Message #8 received at 28939 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Bastian Beischer <bastian.beischer <at> gmail.com>
Cc: 28939 <at> debbugs.gnu.org
Subject: Re: bug#28939: 27.0.50; CC-Mode: (C++) Comment directly after quote
 breaks following lines
Date: Mon, 30 Nov 2020 11:42:52 +0100

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

Bastian Beischer <bastian.beischer <at> gmail.com> writes:

> The following file is incorrectly parsed by CC-Mode (font-lock
> considers everything after //bar to be a comment, for example):
>
> #include "foo.h"//bar
> int main(int argc, char** argv) {
>   return 0;
> }
>
> This problem is reproduceable from emacs -Q when inserting the above
> into a c++-mode buffer.
>
> This is with emacs built from 94281c9a1cc0f756841fdc9b266657853df94a29
> on master, but I guess this is relevant for emacs-26 as well.

(This bug report unfortunately got no response at the time.)

I'm unable to reproduce this in Emacs 26.1, 27.1 or the current trunk.
For instance, in Emacs 26.1, it displays as:

[Message part 2 (image/png, inline)]

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

which looks correct to me.

Are you still seeing this problem, or has it been fixed in the meantime?

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

Message #13 received at 28939 <at> debbugs.gnu.org (full text, mbox):

From: Bastian Beischer <bastian.beischer <at> gmail.com>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 28939 <at> debbugs.gnu.org
Subject: Re: bug#28939: 27.0.50; CC-Mode: (C++) Comment directly after quote
 breaks following lines
Date: Mon, 30 Nov 2020 13:55:21 +0100

Hello Lars,

On Mon, Nov 30, 2020 at 11:43 AM Lars Ingebrigtsen <larsi <at> gnus.org> wrote:
>
> Bastian Beischer <bastian.beischer <at> gmail.com> writes:
>
> > The following file is incorrectly parsed by CC-Mode (font-lock
> > considers everything after //bar to be a comment, for example):
> >
> > #include "foo.h"//bar
> > int main(int argc, char** argv) {
> >   return 0;
> > }
> >
> > This problem is reproduceable from emacs -Q when inserting the above
> > into a c++-mode buffer.
> >
> > This is with emacs built from 94281c9a1cc0f756841fdc9b266657853df94a29
> > on master, but I guess this is relevant for emacs-26 as well.
>
> (This bug report unfortunately got no response at the time.)
>
> I'm unable to reproduce this in Emacs 26.1, 27.1 or the current trunk.
> For instance, in Emacs 26.1, it displays as:
>
>
> which looks correct to me.
>
> Are you still seeing this problem, or has it been fixed in the meantime?

Yes, it seems it's fixed. Thanks for following up!

Cheers
Bastian

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

Message #16 received at 28939 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Bastian Beischer <bastian.beischer <at> gmail.com>
Cc: 28939 <at> debbugs.gnu.org
Subject: Re: bug#28939: 27.0.50; CC-Mode: (C++) Comment directly after quote
 breaks following lines
Date: Mon, 30 Nov 2020 14:00:26 +0100

Bastian Beischer <bastian.beischer <at> gmail.com> writes:

> Yes, it seems it's fixed. Thanks for following up!

Thanks for checking; closing the report.

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

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