GNU bug report logs - #48365
13.0.11; Dollars in distinct comments trigger math mode highlighting in text in-between

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From: Ikumi Keita <ikumi <at> ikumi.que.jp>
To: jfbu <jfbu <at> free.fr>
Cc: 48365 <at> debbugs.gnu.org, Tassilo Horn <tsdh <at> gnu.org>
Subject: bug#48365: 13.0.11; Dollars in distinct comments trigger math mode highlighting in text in-between
Date: Wed, 12 May 2021 15:39:20 +0900

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

Hi Jean and Tassilo,

>>>>> jfbu <jfbu <at> free.fr> writes:
>> Now that you've mentioned it, I remember I wanted to do that change also
>> in the past and Keita-san stopped me from doing so for exactly this
>> reason.

Yes, I did. ;-)

> Would it make sense to apply these rules:

> 1. a $ in comments can never start math mode
> 2. but it can and will always stop math mode

That is a clean idea and, fortunately, easy to implment. Could you test
the attached patch?

One remark: This patch does not follow rigorously your proposition. A $
in comments does not stop math mode if it is preceded by odd numbers of
$'s like this:
foo bar blah % \$

Regards,
Ikumi Keita

[patch (text/x-diff, attachment)]

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