Re: TRAMP + Sudo infinite loop weirdness

[Vlad]

Many thanks! This info solved my problem.
It seems my shell "fish" was at fault. I did not catch unto this, 
because it worked when connecting as non-sudo.

Initially I changed my shell from fish, back to csh. This solved the issue.
Then I read up in the tramp manual, that /bin/sh is requested, when 
connecting via the "sshx" or the "plink" method.
Switching the command from ssh to sshx finally solved the problem 
properly. I now have my fish shell back and sshx properly requests 
/bin/sh. Edit as sudo now works properly.

Best regards,

Vlad


On 11/03/2021 14:50, Michael Albinus wrote:
> Vlad <gnu@frost.kiwi> writes:
>
> > Dear tramp-devel Team,
> Hi Vlad,
>
> > 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?
> You have nasty escape seqences in your shell output, like this:
>
> --8<---------------cut here---------------start------------->8---
> [?2004hflan@flandre /u/h/flan>
> --8<---------------cut here---------------end--------------->8---
>
> 2004h, for example, stands for bracketed paste mode. Can you convince
> your remote shell to suppress it? The Tramp manual speaks about
> techniques.
>
> > Best regards,
> >
> > Vlad
> Best regards, Michael.