João Távora <joaotavora@gmail.com> writes:

Hi Joao,

>> settings in ~/.ssh/config shall apply. And a new value, say `suppress',
>> shall suppress this feature even if enabled in ~/.ssh/config.
>>
>> I'll try to implement something along this line.
>
> Thanks.  I think that is a good start.  But can Eglot or the user
> somehow set 'suppress' for connections "motivated" by Eglot, i.e. M-x
> eglot in some remote file?  How?

The appended patch fixes the issue for me with Thomas' example. It binds
tramp-use-ssh-controlmaster-options to nil before calling make-process,
and that's sufficient for the majority of users.

Users, who have set ControlMaster in their ~/.ssh/config (like Thomas),
are not satified. For them we need another setting of
tramp-use-ssh-controlmaster-options. I'm working on this.

> João

Best regards, Michael.