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bug#44113: 28.0.50; crash with cairo and Noto Sans Javanese font
From: |
Stephen Berman |
Subject: |
bug#44113: 28.0.50; crash with cairo and Noto Sans Javanese font |
Date: |
Wed, 21 Oct 2020 15:25:13 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
On Wed, 21 Oct 2020 15:00:45 +0200 Robert Pluim <rpluim@gmail.com> wrote:
>>>>>> On Wed, 21 Oct 2020 14:22:13 +0200, Stephen Berman
> <stephen.berman@gmx.net> said:
>
> Stephen> On Wed, 21 Oct 2020 12:12:00 +0200 Stephen Berman
> Stephen> <stephen.berman@gmx.net> wrote:
> >> I installed NotoSansJavanese-Regular.ttf and when I type `C-h h' to
> view
> >> the Javanese script, Emacs immediately crashes. It also crashes when I
> >> just try to insert a character from that script, e.g. `C-x 8 RET #xa9b2
> >> RET'. I've attached the backtrace from gdb produced from the latter.
> >> Emacs also crashes when trying to display a character from the Balinese
> >> script with NotoSansBalinese-Regular.ttf installed. The crashes do not
> >> happen in emacs-27 built without cairo, but characters from the
> Javanese
> >> and Balinese scripts are displayed there as tofu, as they are in
> Firefox
> >> (e.g. https://en.wikipedia.org/wiki/Javanese_script), so maybe the
> fonts
> >> are buggy; and indeed, when I uninstall them Emacs built with cairo
> does
> >> not crash and the characters are displayed as tofu.
>
> Stephen> It seems those fonts are indeed buggy: I just installed
> Stephen> NotoSansJavanese-Regular.ttf from
> Stephen> https://github.com/googlefonts/noto-fonts and with it the
> Javanese
> Stephen> script sample in etc/HELLO displays fine both in Emacs from
> master built
> Stephen> with cairo and in emacs-27 with xft (and the Javanese script
> Wikipedia
> Stephen> page also displays fine in Firefox; the googlefonts repository
> does not
> Stephen> contain NotoSansBalinese-Regular.ttf but instead
> Stephen> NotoSerifBalinese-Regular.ttf, which I also installed and with
> it the
> Stephen> Balinese characters in the Wikipedia page also display fine).
>
> >> But it would be
> >> better for Emacs with cairo not to crash with a buggy font, if
> possible.
>
> Stephen> That would still be good, but if it's not practically feasible,
> I guess
> Stephen> this bug should just be closed.
>
> Stephen> Steve Berman
>
> Looking at the backtrace, this could be another manifestation of
> bug#41627. That bug has a patch, would it be possible to try it?
I assume you mean Pip Cet's second patch, in
<CAOqdjBc+x65eSjsvgKv=KcNyR8yWhguJyabvqfwDmPo3UvumoA@mail.gmail.com>? I
applied that and rebuilt from master, and reinstalled the problematic
NotoSansJavanese-Regular.ttf font, and now with it displaying etc/HELLO
does not crash Emacs, and the Javanese characters are displayed as tofu.
So this is another datapoint in favor of installing that patch. Thanks
for the pointer.
Steve Berman