Re: server-local variables

[Michael Albinus <michael.albinus@gmx.de>]

Ted Zlatanov <tzz@lifelogs.com> writes:

> That's very interesting. Some questions:
>
> * how are multiple classes merged?

Several calls of `server-locals-set-class-variables', like this:

--8<---------------cut here---------------start------------->8---
(server-locals-set-class-variables
 'remote-bash
 '((shell-file-name . "/bin/bash")
   ;; Command line switch.
   (shell-command-switch . "-c")
   ;; Command line switch.
   (shell-interactive-switch . "-i")
   ;; Login shell switch.
   (shell-login-switch . "--login")))

(server-locals-set-class-variables
 'remote-nullfile
 '((nullfile . "/dev/null")))

(server-locals-set-class
 "my-user@my-remote-host" 'remote-bash)
(server-locals-set-class
 "my-user@my-remote-host" 'remote-nullfile)
--8<---------------cut here---------------end--------------->8---

And for another user, you could apply the same class, or another one:

--8<---------------cut here---------------start------------->8---
(server-locals-set-class-variables
 'remote-ksh
 '((shell-file-name . "/bin/ksh")
   ...))

(server-locals-set-class
 "another-user@my-remote-host" 'remote-ksh)
(server-locals-set-class
 "another-user@my-remote-host" 'remote-nullfile)
--8<---------------cut here---------------end--------------->8---

> * can classes be assigned by other means besides regexp?

No, not foreseen yet.

> * why not an obarray?

See Stefan

> * a macro `with-process-classes' would be nice

How shall it look like?

> It seems like these are process-local variables, in the sense that you
> may want them per user@host:port combination (or other process
> parameters), not just hostname. Thus it may be better to make this a
> process-level facility.

Process buffers are the first, obvious use case for this. But I don't
want to restrict it to them. People could use it also for setting other
local variables in any remote buffer, maybe even for specific modes.

> Ted

Best regards, Michael.