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

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Message #32 received at 73752 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Yixuan Chen <xuan <at> xlk.me>
Cc: luangruo <at> yahoo.com, 73752 <at> debbugs.gnu.org, visuweshm <at> gmail.com
Subject: Re: bug#73752: 29.4; Ligatures are randomly rendered with extra spaces
Date: Sun, 27 Oct 2024 21:14:16 +0200

> Date: Sun, 27 Oct 2024 13:46:55 -0400
> Cc: visuweshm <at> gmail.com, luangruo <at> yahoo.com, 73752 <at> debbugs.gnu.org
> From: Yixuan Chen <xuan <at> xlk.me>
> 
> > Sorry, I still don't understand.  Your code does
> > 
> >    (highlight-lines-matching-regexp (cdr face) (car face))
> > 
> > This potentially shows each line in a different face, and thus can
> > affect the metrics of the SPC character glyph which is what the
> > indentation is made of.  So why is this a problem, let alone a bug?
> 
> The problem is executing that line at 10PM today may render the font one 
> way, while executing that line at 6AM tomorrow (with exactly the same 
> "face" variable) may render the font a different way, even if all the 
> other variables remains the same.

But you modify the faces in a random fashion, so why is this a
surprise that it is not deterministic?

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