Pathological regexp search problem

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Article #98568

#98568

From: macrakis
Date: Mon, 03 Jun 1991 16:55

12 lines
1046 bytes

GNU Emacs 18.55.121 on NeXT 2

(re-search-forward "\\(...\\)*") -- where ... matches a string of
length 0 -- goes into an infinite loop.  This is understandable...(!)
but unfortunate.  Examples are "\\(\\)*", "\\(a?b?c?\\)*" (even if it
matches a few times, it will eventually match the null string -- and
EOB if nowhere else), ....

It's probably not worth fixing.  I ran into the problem while playing
with some regexp-generating code of mine.

	-s

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From: macrakis@osf.org
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Subject: Pathological regexp search problem
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Date: 3 Jun 91 16:55:51 GMT
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