GNU bug report logs - #20146
font-lock-extend-jit-lock-region-after-change: results are discarded instead of being returned.

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Package: emacs;

Reported by: Alan Mackenzie <acm <at> muc.de>

Date: Thu, 19 Mar 2015 23:03:02 UTC

Severity: normal

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Alan Mackenzie <acm <at> muc.de>
Cc: 20146 <at> debbugs.gnu.org
Subject: bug#20146: font-lock-extend-jit-lock-region-after-change: results are discarded instead of being returned.
Date: Wed, 25 Mar 2015 14:26:06 -0400

> OK.  But I have to be aware of how jit-lock works: in particular how the
> actions in after-change-functions influence those of
> jit-lock-fontify-now and font-lock-fontify-region.

No, that's the wrong way to go about it.
Just assume jit-lock is an *adversary*, which chooses the bounds it passes
to font-lock-fontify-region trying to find holes in your code.


        Stefan
This bug report was last modified 5 years and 201 days ago.

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