GNU bug report logs - #52067
29.0.50; string-glyph-split halts on certain emoji strings

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Message #14 received at 52067 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Paul Maragakis <paul.maragakis <at> icloud.com>
Cc: 52067 <at> debbugs.gnu.org
Subject: Re: bug#52067: 29.0.50; string-glyph-split halts on certain emoji
 strings
Date: Wed, 24 Nov 2021 08:30:55 +0100

Paul Maragakis <paul.maragakis <at> icloud.com> writes:

> The logic in string-glyph-split expects the first two elements in the result
> from find-composition-internal to give the start and end of a multibyte grapheme
> and return nil when there is a regular character at position POS.  However, this 
> isn't always the case.

Yup.  

Paul Maragakis <paul.maragakis <at> icloud.com> writes:

> The following code fixes this bug, though there might be better ways
> to fix it for someone who understands the domain.

Thanks.  `find-composition' takes a the LIMIT parameter, and that'll
make it avoid searching back into the bit of the string that we've
already handled.  So I did that instead in Emacs 29.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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