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From: Michael Heerdegen <michael_heerdegen@web.de>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: 18367@debbugs.gnu.org
Subject: bug#18367: 24.4.50; [PATCH] Text property `font-lock-ignore', to protect from font-lock
Date: Tue, 30 Sep 2014 18:45:30 +0200	[thread overview]
Message-ID: <87iok5t5ud.fsf@web.de> (raw)
In-Reply-To: <jwvvbp83jyh.fsf-monnier+emacsbugs@gnu.org> (Stefan Monnier's message of "Sun, 31 Aug 2014 08:47:33 -0400")

Stefan Monnier <monnier@iro.umontreal.ca> writes:

> > Bug or missing feature: Prevent font-lock from changing text
> > properties on text that has property `font-lock-ignore'.  See
> > http://lists.gnu.org/archive/html/emacs-devel/2014-08/msg00540.html
>
> Could you add a short explanation for why font-lock-face is
> not sufficient?

I'm not sure about that question.  But I see a problem in cases where
packages use the 'face property without using font-lock (e.g. Helm does
this in its Completions buffer) and other packages come and invoke
font-lock in such a buffer (like e.g. rainbow-delimiters does/did in
it's globalized mode).  In such a case, all the fontification with 'face
is erased.

I guess it is an error to use 'face in any buffer that could become
subject to font-locking caused by some mode or package.  If that's the
case - if it is recommended to use font-lock-face in all these
situations, we should say in the manual that 'face is dangerous to use
in such situations:

  (info "(elisp) Special Properties")

Michael.





  parent reply	other threads:[~2014-09-30 16:45 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-30 20:12 bug#18367: 24.4.50; [PATCH] Text property `font-lock-ignore', to protect from font-lock Drew Adams
2014-08-31 12:47 ` Stefan Monnier
2014-08-31 15:30   ` Drew Adams
2014-08-31 20:08     ` Stefan Monnier
2014-08-31 20:56       ` Drew Adams
2014-09-01 18:45     ` Wolfgang Jenkner
2014-09-01 19:08       ` Eli Zaretskii
2014-09-01 19:43         ` Wolfgang Jenkner
2014-09-01 20:04           ` Eli Zaretskii
2014-09-30 16:45   ` Michael Heerdegen [this message]
2014-09-30 17:14     ` Drew Adams
2015-06-20 16:58       ` Drew Adams
2016-04-30 13:44       ` Lars Ingebrigtsen
2016-04-30 16:32         ` Drew Adams
2016-04-30 14:28       ` Stefan Monnier

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