GNU bug report logs - #73752
29.4; Ligatures are randomly rendered with extra spaces

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Tim Ruffing <dev <at> real-or-random.org>
Cc: 73752 <at> debbugs.gnu.org, xuan <at> xlk.me, mituharu <at> math.s.chiba-u.ac.jp, visuweshm <at> gmail.com
Subject: bug#73752: 29.4; Ligatures are randomly rendered with extra spaces
Date: Thu, 07 Nov 2024 09:05:16 +0200

> From: Tim Ruffing <dev <at> real-or-random.org>
> Cc: mituharu <at> math.s.chiba-u.ac.jp, visuweshm <at> gmail.com, xuan <at> xlk.me, 
> 	73752 <at> debbugs.gnu.org
> Date: Thu, 07 Nov 2024 03:12:19 +0100
> 
> On Wed, 2024-11-06 at 15:11 +0200, Eli Zaretskii wrote:
> > 
> > 
> > Thanks.  Can you try calling hb_font_destroy in
> > ftcrhbfont_end_hb_font
> > and setting ftcrfont_info->hb_font to NULL right after that?  If that
> > solves the problem, we could at least install this for now, until we
> > have a better solution (if one exists).
> 
> Yes, that appears to work. And I don't think there's an obvious better
> solution. See attached patch.

Thanks.  Visuwesh, does this patch fix your problem as well?  If so, I
think we should install this.

> And I think I understand the root cause now:

Thanks, sounds plausible (but I know nothing about Cairo internals or
how we use it in Emacs).

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