GNU bug report logs - #16525
24.3; Weird font-lock for multi-line regexp

Previous Next

To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 16525 in the body.
You can then email your comments to 16525 AT debbugs.gnu.org in the normal way.

Toggle the display of automated, internal messages from the tracker.

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

From: Alex Kost <alezost <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3; Weird font-lock for multi-line regexp
Date: Thu, 23 Jan 2014 12:20:47 +0400

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

When I try to use a multi-line regexp in `font-lock-keywords', I have an
unusual result: some lines are highlighted and some are not (lines are
the same).

I have made a test mode, a text sample and a screenshot to show how it
looks for me when tested with "emacs -Q".

Recipe:
1. emacs -Q
2. Evaluate the contents of attached "test.el"
3. "M-x test-font-lock-mode" in a buffer with attached "sample"

[test.el (application/emacs-lisp, attachment)]

[sample (text/plain, attachment)]

[2014-01-23_115015.png (image/png, attachment)]

[Message part 5 (text/plain, inline)]

In GNU Emacs 24.3.1 (i686-pc-linux-gnu, GTK+ Version 3.8.2)
 of 2013-08-07 on -mnt-storage-buildroots-staging-i686-eric
Windowing system distributor `The X.Org Foundation', version 11.0.11405000
Configured using:
 `configure '--prefix=/usr' '--sysconfdir=/etc' '--libexecdir=/usr/lib'
 '--localstatedir=/var' '--with-x-toolkit=gtk3' '--with-xft'
 'CFLAGS=-march=i686 -mtune=generic -O2 -pipe -fstack-protector
 --param=ssp-buffer-size=4'
 'LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro'
 'CPPFLAGS=-D_FORTIFY_SOURCE=2''

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

Message #8 received at 16525 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: Alex Kost <alezost <at> gmail.com>
Cc: 16525 <at> debbugs.gnu.org
Subject: Re: bug#16525: 24.3; Weird font-lock for multi-line regexp
Date: Thu, 23 Jan 2014 03:30:05 -0500

Alex Kost wrote:

> When I try to use a multi-line regexp in `font-lock-keywords', I have an
> unusual result: some lines are highlighted and some are not (lines are
> the same).
[...]
> (defun test-font-lock-keywords ()
>   '(("^<\\(foo\\)> \\(.+\\(?:
>  .+?\\)\\)\\(\\[.*\\]\\)$"
>      (1 'font-lock-function-name-face)
>      (2 'font-lock-comment-face)
>      (3 'font-lock-string-face))))

It's not that simple. See info node `(elisp)Font Lock Multiline'.

Message #11 received at 16525 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: Alex Kost <alezost <at> gmail.com>
Cc: 16525 <at> debbugs.gnu.org
Subject: Re: bug#16525: 24.3; Weird font-lock for multi-line regexp
Date: Thu, 23 Jan 2014 03:35:01 -0500

Glenn Morris wrote:

> It's not that simple. See info node `(elisp)Font Lock Multiline'.

I meant to say, info node `(elisp)Multiline Font Lock'. Anyway, this

http://www.gnu.org/software/emacs/manual/html_node/elisp/Multiline-Font-Lock.html

Message #14 received at 16525 <at> debbugs.gnu.org (full text, mbox):

From: Alex Kost <alezost <at> gmail.com>
To: Glenn Morris <rgm <at> gnu.org>
Cc: 16525 <at> debbugs.gnu.org
Subject: Re: bug#16525: 24.3; Weird font-lock for multi-line regexp
Date: Thu, 23 Jan 2014 13:59:52 +0400

Glenn Morris (2014-01-23 12:30 +0400) wrote:

> Alex Kost wrote:
>
>> When I try to use a multi-line regexp in `font-lock-keywords', I have an
>> unusual result: some lines are highlighted and some are not (lines are
>> the same).
> [...]
>> (defun test-font-lock-keywords ()
>>   '(("^<\\(foo\\)> \\(.+\\(?:
>>  .+?\\)\\)\\(\\[.*\\]\\)$"
>>      (1 'font-lock-function-name-face)
>>      (2 'font-lock-comment-face)
>>      (3 'font-lock-string-face))))
>
> It's not that simple. See info node `(elisp)Font Lock Multiline'.

Thank you, I should have searched before posting.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.