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bug#40733: 28.0.50; Emacs locks up on paste (yank) of unicode characters
From: |
Pip Cet |
Subject: |
bug#40733: 28.0.50; Emacs locks up on paste (yank) of unicode characters |
Date: |
Mon, 1 Jun 2020 15:50:36 +0000 |
On Mon, Jun 1, 2020 at 3:15 PM Eli Zaretskii <eliz@gnu.org> wrote:
> Thanks.
>
> From what I see in the net search, this is a very large font, created
> for some very special circumstances. Not sure we should spend time on
> this issue. Maybe submit a bug report to Fontconfig folks.
Every call to fontconfig takes a long time, and we call it 17 times...
But it looks like the code that varies pixel size is there for a
reason:
for (psize = pixel_size; ; psize++)
{
font_object = driver_list->driver->open_font (f, entity, psize);
if (NILP (font_object))
return Qnil;
font = XFONT_OBJECT (font_object);
if (font->average_width > 0 && font->height > 0)
break;
/* Avoid an infinite loop. */
if (psize > pixel_size + 15)
return Qnil;
}