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When I want to access remote files over sftp in Emacs using TRAMP, I would like Emacs to offer me completions from the hostnames in my ssh config. How can I do this?

For example, if I have two hosts in my ssh config, "alpha" and "bravo", when I type /sftp:a at the find-file prompt, it should complete "alpha".

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up vote 2 down vote accepted

Remote access is documented in the Tramp manual. You want the section on customizing completion. Put something like this in your ~/.emacs:

(setq my-tramp-ssh-completions
      '((tramp-parse-sconfig "~/.ssh/config")
        (tramp-parse-shosts "~/.ssh/known_hosts")))
(mapc (lambda (method)
        (tramp-set-completion-function method my-tramp-ssh-completions))
      '("fcp" "rsync" "scp" "scpc" "scpx" "sftp" "ssh"))
share|improve this answer
    
Close enough. I just had to replace "ssh" with "sftp". Actually, I set it for both. – Ryan Thompson Oct 26 '10 at 1:00
    
Oh, wow. There are a lot of ssh-based methods, aren't there? I don't even know what half of those are. – Ryan Thompson Oct 27 '10 at 4:51

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