string-pixel-width hangs at least emacs 28.2 when used with doom modeline

[felipebalbi]

Hi,

There's a long discussion on the doom modeline repository regarding a regression after an upgrade. It turns out that the hang was introduced by doom modeline's change to using string-pixel-width. Removing the single usage of that function from doom modeline makes everything work okay, so it appears that the bug lies in string-pixel-width.

Happy to test suggestions :-)

[minad]

Thanks for debugging and figuring out this issue!

[felipebalbi]

Glad I was able to help :-)

[sdevlin]

Hi, see also https://lists.gnu.org/archive/html/bug-gnu-emacs/2023-01/msg00386.html.

[minad]

@sdevlin Thanks for debugging this. You may close the bug on the bug tracker. The issue has been fixed since then via the release of Compat 29.1.1.0. In the future, if you observe Compat-related issues, please report these issues directly on the Compat issue tracker or via mail to the me, since I may miss them on the Emacs bug tracker, in particular since the subject didn't contain "Compat".