GNU bug report logs - #15076
24.3.50; Syntax highlighting in the octave-mode

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

From: Ivan Oreshnikov <oreshnikov.ivan <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.50; Syntax highlighting in the octave-mode
Date: Mon, 12 Aug 2013 17:55:39 +0400

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

Hello.

I use a color theme that assigns a different background color for
syntastic elements and I've noticed that empty space gets highlighted
with a builtin face (see screenshot in attachment). Is there a way to
fix that?

[screenshot.png (image/png, attachment)]

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

In GNU Emacs 24.3.50.1 (i686-pc-linux-gnu, X toolkit, Xaw scroll bars)
 of 2013-08-05 on mercury, modified by Debian
 (emacs-snapshot package, version 2:20130804-1~ppa1~raring1)
Windowing system distributor `The X.Org Foundation', version 11.0.11303000
System Description:	Ubuntu 13.04

Configured using:
 `configure --build i686-linux-gnu --host i686-linux-gnu --prefix=/usr
 --sharedstatedir=/var/lib --libexecdir=/usr/lib --localstatedir=/var
 --infodir=/usr/share/info --mandir=/usr/share/man --with-pop=yes
 --enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/24.3.50/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.3.50/site-lisp:/usr/share/emacs/site-lisp
 --without-compress-info --with-crt-dir=/usr/lib/i386-linux-gnu/
 --with-x=yes --with-x-toolkit=lucid CFLAGS='-DDEBIAN
 -DSITELOAD_PURESIZE_EXTRA=5000 -g -O2' CPPFLAGS='-D_FORTIFY_SOURCE=2'
 LDFLAGS='-g -Wl,--as-needed -znocombreloc''

Important settings:
  value of $LANG: ru_RU.UTF-8
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
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  rainbow-delimiters-mode: t
  jabber-activity-mode: t
  jabber-mode-line-mode: t
  show-paren-mode: t
  electric-pair-mode: t
  ido-everywhere: t
  global-auto-revert-mode: t
  global-subword-mode: t
  subword-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
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  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
M-x r e p o <tab> r <tab> <return>

Recent messages:
Loading /home/me/.emacs.d/gnus.el (source)...done
Loading /home/me/.emacs.d/eshell.el (source)...done
Loading /home/me/.emacs.d/maxima.el (source)...done
Loading /home/me/.emacs.d/octave.el (source)...done
Local Ispell dictionary set to en
Starting new Ispell process [/usr/bin/aspell::en] ...
Package assoc is obsolete!
Starting Emacs daemon.
When done with this frame, type C-x 5 0
Making completion list...

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/home/me/.emacs.d/elpa/org-20130730.1244/org-entities hides /usr/share/emacs/24.3.50/lisp/org/org-entities
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/home/me/.emacs.d/elpa/org-20130730.1244/org-protocol hides /usr/share/emacs/24.3.50/lisp/org/org-protocol
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/home/me/.emacs.d/elpa/org-20130730.1244/org-attach hides /usr/share/emacs/24.3.50/lisp/org/org-attach
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/home/me/.emacs.d/elpa/org-20130730.1244/ob-asymptote hides /usr/share/emacs/24.3.50/lisp/org/ob-asymptote
/home/me/.emacs.d/elpa/org-20130730.1244/ob-table hides /usr/share/emacs/24.3.50/lisp/org/ob-table
/home/me/.emacs.d/elpa/org-20130730.1244/ob-scala hides /usr/share/emacs/24.3.50/lisp/org/ob-scala
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/home/me/.emacs.d/elpa/org-20130730.1244/ob-sass hides /usr/share/emacs/24.3.50/lisp/org/ob-sass
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Features:
(shadow sort mail-extr emacsbug sendmail help-mode pp server flyspell
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info easymenu rainbow-mode-autoloads package cyril-util tooltip
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fontset image regexp-opt fringe tabulated-list newcomment lisp-mode
prog-mode register page menu-bar rfn-eshadow timer select scroll-bar
mouse jit-lock font-lock syntax facemenu font-core frame cham georgian
utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean
japanese hebrew greek romanian slovak czech european ethiopic indian
cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev
minibuffer loaddefs button faces cus-face macroexp files text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process dbusbind
gfilenotify dynamic-setting system-font-setting font-render-setting
x-toolkit x multi-tty emacs)

Message #8 received at 15076 <at> debbugs.gnu.org (full text, mbox):

From: Leo Liu <sdl.web <at> gmail.com>
To: Ivan Oreshnikov <oreshnikov.ivan <at> gmail.com>
Cc: 15076 <at> debbugs.gnu.org
Subject: Re: bug#15076: 24.3.50; Syntax highlighting in the octave-mode
Date: Sat, 28 Sep 2013 10:59:15 +0800

On 2013-08-12 21:55 +0800, Ivan Oreshnikov wrote:
> I use a color theme that assigns a different background color for
> syntastic elements and I've noticed that empty space gets highlighted
> with a builtin face (see screenshot in attachment). Is there a way to
> fix that?

Doesn't look like to a bug in emacs. Consider reporting it to the color
theme maker.

Leo

Message #11 received at 15076 <at> debbugs.gnu.org (full text, mbox):

From: Ivan Oreshnikov <oreshnikov.ivan <at> gmail.com>
To: Leo Liu <sdl.web <at> gmail.com>
Cc: 15076 <at> debbugs.gnu.org
Subject: Re: bug#15076: 24.3.50; Syntax highlighting in the octave-mode
Date: Sat, 28 Sep 2013 12:31:37 +0400

> > I use a color theme that assigns a different background color for
> > syntastic elements and I've noticed that empty space gets highlighted
> > with a builtin face (see screenshot in attachment). Is there a way to
> > fix that?

> Doesn't look like to a bug in emacs. Consider reporting it to the color
> theme maker.

My description was not clear enough, sorry for that.

The problem is in the octave-mode's parser -- it hightlights the entire
scope of a function with the `font-lock-builtin-face`. It was introduced
in the new version of octave-mode, which merged old `octave-mod` and
`octave-inf` together. The color theme that I use just makes this error
evident.

Ivan.

Message #14 received at 15076 <at> debbugs.gnu.org (full text, mbox):

From: Leo Liu <sdl.web <at> gmail.com>
To: Ivan Oreshnikov <oreshnikov.ivan <at> gmail.com>
Cc: 15076 <at> debbugs.gnu.org
Subject: Re: bug#15076: 24.3.50; Syntax highlighting in the octave-mode
Date: Sat, 28 Sep 2013 17:45:27 +0800

On 2013-09-28 16:31 +0800, Ivan Oreshnikov wrote:
> My description was not clear enough, sorry for that.
>
> The problem is in the octave-mode's parser -- it hightlights the entire
> scope of a function with the `font-lock-builtin-face`. It was introduced
> in the new version of octave-mode, which merged old `octave-mod` and
> `octave-inf` together. The color theme that I use just makes this error
> evident.

Could you provide a recipe to reproduce the bug?

Unfortunately from looking how font-lock-builtin-face is used in
octave.el I cannot find where the bug is.

thanks,
Leo

Message #17 received at 15076 <at> debbugs.gnu.org (full text, mbox):

From: Ivan Oreshnikov <oreshnikov.ivan <at> gmail.com>
To: Leo Liu <sdl.web <at> gmail.com>
Cc: 15076 <at> debbugs.gnu.org
Subject: Re: bug#15076: 24.3.50; Syntax highlighting in the octave-mode
Date: Sat, 28 Sep 2013 22:52:21 +0400

Right now I'm using a different machine. Using new octave.el from the
git repo I can't reporduce the bug. I'll write the followup later when I
get my hands on the original setup.

Ivan.

Message #20 received at 15076 <at> debbugs.gnu.org (full text, mbox):

From: Ivan Oreshnikov <oreshnikov.ivan <at> gmail.com>
To: Leo Liu <sdl.web <at> gmail.com>
Cc: 15076 <at> debbugs.gnu.org
Subject: Re: bug#15076: 24.3.50; Syntax highlighting in the octave-mode
Date: Fri, 11 Oct 2013 12:46:06 +0400

Sorry for the late reply. I'm able to reproduce the issue with

`emacs-snapshot' from unstable branch of http://emacs.naquadah.org/,

which uses this git repository to host its sources

http://anonscm.debian.org/gitweb/?p=users/acid/emacs-snapshot.git;a=summary

According to the `octave.el' history

http://anonscm.debian.org/gitweb/?p=users/acid/emacs-snapshot.git;a=history;f=lisp/progmodes/octave.el;h=899bf151a2c025c9abd8b749460d5b4e28174abe;hb=refs/heads/debian/unstable

your latest commits should be in the tree already. My current emacs
version is

"GNU Emacs 24.3.50.1 (x86_64-pc-linux-gnu, GTK+ Version 3.8.4)
 of 2013-10-03 on prometheus, modified by Debian".

so it seems that your latest commits should be applied to my local
`octave.el' too.


In my previous email I wrote that the bug was fixed in the latest file
from git, however I've noticed that simple evaluation of the file will
not replace my `octave-mode' function; therefore I was working with the
old `octave-mode' version from the stable release at the time.


To reproduce the issue you should

1. Change the background color of the builtin face to make things more
   evident. For example, run `customize-face' for
   `font-lock-builtin-face' and change the background color to
   something bright and annoying like `firebrick'. 
2. Open any octave file with the function definition inside. Blank
   space in the scope of the function should be bright red.

Hope it helps.


Ivan.

Message #25 received at 15076-done <at> debbugs.gnu.org (full text, mbox):

From: Leo Liu <sdl.web <at> gmail.com>
To: Ivan Oreshnikov <oreshnikov.ivan <at> gmail.com>
Cc: 15076-done <at> debbugs.gnu.org, Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: Re: bug#15076: 24.3.50; Syntax highlighting in the octave-mode
Date: Fri, 22 Nov 2013 10:37:29 +0800

Fixed in 24.4

On 2013-10-11 16:46 +0800, Ivan Oreshnikov wrote:
> To reproduce the issue you should
>
> 1. Change the background color of the builtin face to make things more
>    evident. For example, run `customize-face' for
>    `font-lock-builtin-face' and change the background color to
>    something bright and annoying like `firebrick'. 
> 2. Open any octave file with the function definition inside. Blank
>    space in the scope of the function should be bright red.
>
> Hope it helps.
>
>
> Ivan.

Thanks for the detailed report and I can reproduce the bug. Could you
verify it is fixed? Thanks.

Stefan,

This bug was due to including \n in octave-operator-regexp. My fix in
r115180 removes it. Do you see any issue with it? Thanks.

Leo

Message #28 received at 15076-done <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Leo Liu <sdl.web <at> gmail.com>
Cc: Ivan Oreshnikov <oreshnikov.ivan <at> gmail.com>, 15076-done <at> debbugs.gnu.org
Subject: Re: bug#15076: 24.3.50; Syntax highlighting in the octave-mode
Date: Fri, 22 Nov 2013 09:26:48 -0500

> This bug was due to including \n in octave-operator-regexp. My fix in
> r115180 removes it. Do you see any issue with it? Thanks.

Can't remember.  Just make sure any problem you fix is reflected by
a sample code in test/indent/octave.m and that the fix doesn't break the
examples already present.


        Stefan

Message #31 received at 15076 <at> debbugs.gnu.org (full text, mbox):

From: Leo Liu <sdl.web <at> gmail.com>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: Ivan Oreshnikov <oreshnikov.ivan <at> gmail.com>, 15076 <at> debbugs.gnu.org
Subject: Re: bug#15076: 24.3.50; Syntax highlighting in the octave-mode
Date: Fri, 22 Nov 2013 22:38:20 +0800

On 2013-11-22 22:26 +0800, Stefan Monnier wrote:
> Can't remember.  Just make sure any problem you fix is reflected by
> a sample code in test/indent/octave.m and that the fix doesn't break the
> examples already present.
>
>
>         Stefan

No, nothing breaks in test/indent/octave.m. The fix was not to
font-locking \n as builtin operators i.e. it is font-lock related.

Leo

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