[git] What are these ^M's that keep showing up in my files in emacs?

Pot the following in your ~/.emacs (or eqiuvalent)

(defun dos2unix ()
  "Replace DOS eolns CR LF with Unix eolns CR"
  (interactive)
    (goto-char (point-min))
      (while (search-forward "\r" nil t) (replace-match "")))

and then you would be able to simply use M-x dos2unix.

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