Bugs item #1555496, was opened at 2006-09-09 16:02
Message generated for change (Comment added) made by tim_one
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Category: Regular Expressions
>Group: Not a Bug
>Status: Closed
>Resolution: Invalid
Priority: 5
Submitted By: wojtekwu (wojtekwu)
Assigned to: Gustavo Niemeyer (niemeyer)
Summary: Bug in the match function
Initial Comment:
Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310
32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for
more information.
>>> import re
>>> as = re.compile("(a|((a|b)*))")
>>> wynik = as.match("aabaa")
>>> wynik.end()
1
>>> as = re.compile("(((a|b)*)|a)")
>>> wynik = as.match("aabaa")
>>> wynik.end()
5
>>>
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>Comment By: Tim Peters (tim_one)
Date: 2006-09-09 18:23
Message:
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That's right -- the first ("leftmost") alternative that
matches wins; same as Perl, etc etc. Closing as Not-A-Bug.
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Comment By: Georg Brandl (gbrandl)
Date: 2006-09-09 16:06
Message:
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user_id=849994
IMHO that's not a bug, since we have a "leftmost
alternative" strategy, not a "longest match".
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