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How can I customize the prompt of eshell? Specifically how can I prevent it from showing the full current path?

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migrated from stackoverflow.com Oct 30 '12 at 0:55

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This is actually a valid question, given the lack of documentation in eshell. –  pmr Oct 30 '12 at 0:36

1 Answer 1

up vote 1 down vote accepted

You can find a lot of possibilities to customize a prompt in the emacs wiki.

In the following example only three last directory names of the path will be shown, the directories in the beginning will be shortened to one letter:

(setq eshell-prompt-function
      (lambda()
        (concat (getenv "USER") "@" (getenv "HOST") ":"
                ((lambda (p-lst)
                   (if (> (length p-lst) 3)
                       (concat
                        (mapconcat (lambda (elm) (substring elm 0 1))
                                   (butlast p-lst (- (length p-lst) 3))
                                   "/")
                        "/"
                        (mapconcat (lambda (elm) elm)
                                   (last p-lst (- (length p-lst) 3))
                                   "/"))
                     (mapconcat (lambda (elm) elm)
                                p-lst
                                "/")))
                 (split-string (eshell/pwd) "/"))
                (if (= (user-uid) 0) " # " " $ "))))
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I tried this: (setq eshell-prompt-function (lambda () "> ")) in order to get a clean '>' but this breaks my tab completion and 'C-c C-a' to go to beginning of command - is there a way not to break this and also have a simple prompt? –  Palace Chan Oct 31 '12 at 23:03

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