bug#58135: 29.0.50; Typing getting garbled in mail-mode

[Robert Marshall <robert@capuchin.co.uk>]

Po Lu writes:
 > Eli Zaretskii <eliz@gnu.org> writes:
 > 
 > >> Date: Mon, 7 Nov 2022 11:08:59 +0000
 > >> From: Robert Marshall <robert@capuchin.co.uk>
 > >> Cc: luangruo@yahoo.com,
 > >>     58135@debbugs.gnu.org
 > >> 
 > >> 
 > >> Eli Zaretskii writes:
 > >>  > Is the wrong order real, or just on display?  IOW, what happens if you
 > >>  > save the buffer to a file -- do you see the wrong order in the file as
 > >>  > well?
 > >>  > 
 > >> 
 > >> I saved a buffer containing garbled "r dehsangul ce" - I typed "rules
 > >> changed" to a file and the contents of the file were as in the buffer
 > >> - so the wrong order was real rather than just being displayed.
 > >
 > > That would mean something really changes the input events that Emacs
 > > receives.  Does "C-h l" after this happens indeed shows the characters
 > > in the wrong order?
 > 
 > And if it does, would you please try turning off input method support,
 > by running Emacs like so:
 > 
 >   emacs (other options here) -xrm 'Emacs.useXIM: off'
 > 
 > the extra layers of indirection involved in ferrying events to and fro
 > the input method may be causing this problem, and narrowing it down to
 > the input method would make it easier to debug.

I've run emacs with those options for 2+ weeks now and am yet to
see the problem occurring, so that appears to avoid the problem.

Robert