bug#74691: Long errors with flymake-show-diagnostics-at-end-of-line really slows movement

[Eli Zaretskii]

> From: spl3g <spleefer6@gmail.com>
> Date: Tue, 10 Dec 2024 16:33:16 +0300
> Cc: 74691@debbugs.gnu.org
> 
> I was using typescript-ts-mode. Also just tried js-mode but it gave the same 
> results.

Still cannot reproduce, sorry.

Can you invoke "M-x profiler-start RET RET", then run your
reproduction recipe for at least 10 to 20 seconds, then type
"M-x profiler-report", and post the full expanded profile here?  To
expand the profile, type "C-u RET" in the profile buffer, and then
make sure there are no lines preceded with "+", which means they were
not expanded; typing RET on each such line will expand it.

Perhaps looking at the profile will give us some clues.