Tramp mode encoding problem in v29.1

[trondh]

On Mac, I upgraded to emacs 29.1.

However I get an encoding problem when editing remote iso-latin-1 files in tramp mode, which ends up in utf-8 format no matter my local .emacs configuration, which says use latin-1 always.

If I edit the iso-latin-1 file locally, latin-1 encoding is kept through an update, so it seems to be related to the tramp mode.

I also believe the problem may be related to the base64 transfer and encode/decode, but not sure where the exact problem is located.

I downgraded back to emacs 28.2, and the problem is gone, so something seems to be introduced in 29.1.

Regards
Trond

[jado4810]

I reproduced this issue also on windows and linux while using emacs29.1, so it seems to be a bug on that version of emacs itself.
Using the newest versions of tramp could avoid the issue, and on the 29.1 the patch attached here may fixes.

However, I suppose updating 29.2 would be a good idea (although it is not released yet, but it seems to be fixed on that version).

emacs-29.1-trampfix.patch