GNU bug report logs - #41185
highlight-regexp not working properly for multiline-matching regexps

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Message #24 received at 41185 <at> debbugs.gnu.org (full text, mbox):

From: jan <rtm443x <at> googlemail.com>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: Michael Heerdegen <michael_heerdegen <at> web.de>, 41185 <at> debbugs.gnu.org
Subject: Re: bug#41185: highlight-regexp not working properly for
 multiline-matching regexps
Date: Tue, 15 Jun 2021 14:25:58 +0100

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

To reinforce Michael Heerdegen's point, now it seems to be failing on
trivial single-line strings too:

start emacs with -Q, open a new buffer, say 'asdf'

type in 'silly'

Highlight it; M-s h r silly ret

existing silly gets highligted.

Press return a couple of times then type in 'silly' again, does not
highlight (see silly_twice_only_one_got_highlighted.PNG)

Turn off highlighting (M-s h u) then back on again (M-s h r silly ret)
and both are now highlighted (see silly_both_highlited.PNG), showing
incremental highlighting is indeed failing.

regards

jan

On 13/06/2021, Lars Ingebrigtsen <larsi <at> gnus.org> wrote:
> Michael Heerdegen <michael_heerdegen <at> web.de> writes:
>
>> I think you must read the original report further, where there is a text
>> example with "endif" for that highlighting fails.  AFAICT the complaint
>> is about multi-line matches not being highlighted.
>>
>> I think `highlight-regexp' is not able to highlight multiline
>> stuff, but the docstring doesn't tell anything about this.
>
> It is being highlit, but not reliably, I see.  If you paste the test
> cases in, they are highlit, but not if you type them in (or paste them
> in in steps)...
>
> --
> (domestic pets only, the antidote for overdose, milk.)
>    bloggy blog: http://lars.ingebrigtsen.no
>

[silly_twice_only_one_got_highlighted.PNG (image/png, attachment)]

[silly_both_highlited.PNG (image/png, attachment)]

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