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bug#14708: 24.2; query-replace-regexp when match and replacement are the
From: |
Ed Avis |
Subject: |
bug#14708: 24.2; query-replace-regexp when match and replacement are the same |
Date: |
Mon, 24 Jun 2013 16:30:46 +0000 |
Yes, I could have specified the regexp as ' +' instead of just ' +'.
That would not have given any cases where the match and replacement are the
same.
I typed the regexp without too much thought, but it is not incorrect;
replacing one or more spaces with one space does what I want, just
with more replacement operations than are strictly necessary.
I think it would make Emacs more usable if it only prompted for replacements
which make a difference, after all, if the buffer contents will not be affected
one way or the other why waste the user's time asking for yes or no?
I do take your point that a no-op replacement can indicate a bug in
the regexp. Perhaps query-replace-regexp could print 'Skipping some
cases where matched text and replacement text are the same'.
--
Ed Avis <eda@waniasset.com>
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