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Re: Emacs as a command line tool

From: Joakim Hove
Subject: Re: Emacs as a command line tool
Date: Tue, 17 Feb 2004 12:46:36 +0100
User-agent: Gnus/5.1003 (Gnus v5.10.3) Emacs/21.3.50 (gnu/linux)

David Rasmussen <address@hidden> writes:

> I considered that, but it just outputs the results to stdout, which
> makes it hard to use in batch runs. Or am I missing something?


how about redirection:  

expand file > tmp_file ; mv tmp_file file

Here is an e-lisp solution:

(defun untabify-file (file)
  (find-file file)
  (untabify (point-min) (point-max))
  (kill-buffer (current-buffer)))
(defun untabify-script ()
  (dolist (file command-line-args-left)
    (untabify-file file)))

which can be invoked as follows:

bash% emacs -f untabify-script file1 file2 file3 ....

But, as you can see the use of emacs from the command-line will
typically require some lisp programming to write wrappers around the
emacs functions, like e.g. the function (untabify)

HTH - Joakim

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