fstamour/replace-prefix-if-present.el

Created June 2, 2016 19:31

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Small emacs lisp function "If STRING starts with PREFIX, replace the PREFIX by NEW-PREFIX. Else, returns NIL."

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replace-prefix-if-present.el

 (defun replace-prefix-if-present (string prefix new-prefix)
   "If STRING starts with PREFIX, replace the PREFIX by NEW-PREFIX.
 Else, returns NIL."
   (if (string-prefix-p prefix string)
       (concat new-prefix (substring string (length prefix)))
     nil))

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