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Re: Isearch in dired

From: Alan Mackenzie
Subject: Re: Isearch in dired
Date: Sat, 8 Nov 2008 12:19:29 +0000
User-agent: Mutt/1.5.9i

Morning, Richard!

On Sat, Nov 08, 2008 at 04:56:52AM -0500, Richard M. Stallman wrote:
> It would be useful for isearch in a dired buffer to match only file
> names by default.  I think this would be a good feature -- if we can
> come up with a natural way to request ordinary search of the entire
> buffer.

> Can anyone think of one?

This doesn't have to be a special dired thing.  Surely it should be a
major mode dependent hook:

(defvar isearch-in-valid-region-p nil
  "If non-nil, a function which returns non-nil if the current isearch 
match is acceptable.  It is given two parameters, the beginning and end
of the match.")

There are already several toggle keys in isearch-mode: M-r (toggle
regexp), M-c (toggle case sensitivity), .....  So, how about C-M-z
(toggle validation funtion)?

It's not that brilliant - in fact, it's pretty bad, but it doesn't
shadow a useful function in the Emacs core (is C-M-z bound anywhere at
all?) and it's no worse than C-M-w.  ;-(

Come on, Richard, tell us what your best effort at thinking up a key
binding was.  ;-)

Alan Mackenzie (Nuremberg, Germany).

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