GNU bug report logs - #18856
24.4; *grep* output buffer not getting fontified when jit-lock-defer-time is used

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 18856 <at> debbugs.gnu.org, deng <at> randomsample.de
Subject: bug#18856: 24.4; *grep* output buffer not getting fontified when jit-lock-defer-time	is used
Date: Tue, 28 Oct 2014 19:53:12 +0200

> From: Stefan Monnier <monnier <at> iro.umontreal.ca>
> Date: Tue, 28 Oct 2014 13:09:02 -0400
> Cc: 18856 <at> debbugs.gnu.org
> 
> IOW jit-lock-defer should use a non-idle timer for this case.

But then how do we ensure the fontifications don't happen for as long
as Emacs isn't idle? test idleness by hand inside the timer function?

> Note that an alternative implementation of jit-lock-defer which only
> defers when there is not input pending would supposedly not suffer from
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
You mean, when there _is_ input pending, right?

> this problem since it wouldn't defer fontification in this case (of
> course, that would suffer from the reverse problem that by failing to
> defer fontification, the redisplay may not be able to keep up with
> process output).

Indeed, so what's the point of doing that?

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