bug#70959: Tramp connection property can interact weirdly with cache

[Michael Albinus via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Dmitry Gutov <dmitry@gutov.dev> writes:

> Hi Michael,

Hi Dmitry,

> Do you think we could also make it so
>
>  (setq tramp-direct-async-process t)

I don't want. It is too easy. People will set it, and months later they
report that direct async processes won't work, and they've forgotten
this setting, and there's a new host which needs an interactive password.

You can achieve the same effect, if you set the connection-local profile
w/o any :protocol, :user or :machine, just the :application. Something like

--8<---------------cut here---------------start------------->8---
     (connection-local-set-profiles
      '(:application tramp) 'remote-direct-async-process)
--8<---------------cut here---------------end--------------->8---

And be prepared that I'll blame you in case you report an error because
of this :-)

Best regards, Michael.