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From: Raffaele Ricciardi <rfflrccrd@gmail.com>
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Subject: Re: Occur lite
Date: Sun, 15 Jul 2012 17:41:21 +0100
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On 07/15/2012 03:06 PM, B. T. Raven wrote:> Ignutians:
 >
 > Is there an Emacs function that extracts only words matching a regexp
 > and writes them to another buffer? This would work exactly like the
 > "occur" function but would write only the words to the *Occur* buffer
 > instead of the whole line. I have looked at the code for "occur" in
 > replace.el but I'm afraid it's over my head to try and modify it into a
 > custom function.

An indirect solution: run occur and then run a regexp over the *Occur* 
buffer to capture each word. Something like:

(call-interactively #'occur)
(switch-to-buffer "*Occur*") ;; Or with-current-buffer
(goto-char (point-min))
;; etc.