TRAMP + Sudo infinite loop weirdness

[Vlad]

Dear tramp-devel Team,

I'm having a though time editing files with emacs (GNU Emacs 27.1 (build
1, x86_64-pc-linux-gnu) of 2020-09-26) as sudo on my server (FreeBSD 12).
The SSH connection is established via ssh-keys.

Editing files via Tramp (find-file "ssh:user@machine:/") everything 100%
works, however, doing (find-file "ssh:user@machine|sudo:root@machine:/")
does not work *most of the time*. One out of 20 of entering this
find-file command, I get the remote password prompt to enter my remote
user's password to get a tramp connection with sudo privileges. However,
most of the time, Tramp produces trash inputs into the password field by
itself, instead of giving me the password prompt. As a result, either
nothing happens or emacs get's stuck in a loop and C-g crashes emacs.

"tramp-verbose 10" reveals the culprit being a repeated series of "exec
sudo -u root -s -H -p P""a""s""s""w""o""r""d"": /bin/sh"
"^[[?2004lPassword:" "Sorry, try again." instead of giving me the
password prompt.

Full verbose log attached to this mail.

Anything I can do to stop tramp from acting up?

Best regards,


Vlad

tramp.debug
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