Comments on: Dos2unix in Emacs, Sometimes Macros Are Nice

By: A R Baboon

A R Baboon — Sun, 20 Jan 2008 17:21:59 +0000

It would be good to save and restore the point for convenience. Also a unix2dos has now become useful for diff/cvs interactions.

By: A R Baboon

A R Baboon — Sun, 20 Jan 2008 17:18:52 +0000

The Microsoft line ending is prepends each line feed with a carriage return. All we want to do strip out any carriage returns. I would say that we should do a more sophisticated pattern match for line ending, etc., but I am not sure there should ever be carriage returns in a file.

By: Hagen

Hagen — Fri, 18 Jan 2008 14:34:51 +0000

Not to be a smart ass, but the function doesn’t do what it says in the description. It replaces the ^M with nothing, not with ^J. For most files this is fine, since the ^M appears at the end of the line. If the ^M is immersed in the lines you have to (replace-match (string ?\C-j) nil t) of course. In the file I needed this for (thank you for your function as my starting point), both cases appeared. So I solved it inelegant but pragmatic this way:

(defun dos2unix (buffer)
(interactive “b buffer to convert” )
(goto-char (point-min))
(while (search-forward (string ?\C-m?\C-j) nil t)
(replace-match (string ?\C-j) nil t))
(goto-char (point-min))
(while (search-forward (string ?\C-m) nil t)
(replace-match (string ?\C-j) nil t)))