Re: tramp (2.0.58-pre); no user/password prompt on freebsd

[Paolo Vanni M. Veñegas]

Michael Albinus <address@hidden> writes:

> "Paolo Vanni M. Veñegas" <address@hidden> writes:
>
>> I am trying to connect remotely from emacs on a freebsd box to another
>> freebsd box (platform may be relevant). Using tramp with ido-mode does
>> not work at all, as when I type in /ssh:, it immediately tries to
>> connect to the host "ssh". When I set ssh as default method, with
>> ido-mode on it as soon as I enter /user@ it assumes I am looking for a
>> directory.
>
> According to the ChangeLogs, coexistence between Tramp and ido was
> implemented in November 2007. So it cannot work in Emacs 22. Try Emacs
> 23, which might be released on July 22nd (according to recent
> announcements).

Thanks, will do.

> Tramp sends passwords only if they are cached. This caching does not
> survive an Emacs session.

I did some digging around on my own. It seems that had something to do
with the way ange-ftp kept its accounts. I already tried
tramp-clear-passwd, as well as restarting emacs, to no avail. Since the
problem that tramp was skipping the password prompt, I checked the code
and found this:

    (defun tramp-read-passwd (user host prompt)
      "Read a password from user (compat function).
    Invokes `password-read' if available, `read-passwd' else."
      (if (functionp 'password-read)
          (let* ((key (concat (or user (user-login-name)) "@" host))
             (password (apply #'password-read (list prompt key))))
        (apply #'password-cache-add (list key password))
        password)
        (read-passwd prompt)))

(functionp 'password-read) was evaluating to t, so I assumed it was
password-read that was broken. I replaced that condition with (if nil...
so it used read-passwd instead, and the prompt worked again. I didn't
bother finding out why password-read was not working.

Also, I found a much more elegant solution anyway. Just use key-based
SSH logins and ssh-agent, which emacs/tramp happily use from env when
spawning ssh. :)

Thanks for the prompt reply though!

-- 
pmv