New submission from Eric Promislow:
>>> import re
>>> p = re.compile(r'^(?:\\"|.|)*?"', re.S|re.M)
>>> s = 'sub foo {\n\tprint "\n\t\tbar\n\t\t";\n}\n'
>>> m = p.findall(s)
Python doesn't return.
Dropping the last "|" in the pattern fixes this.
Regex engines in Perl, PHP, JS, and Ruby all handle
this regex. Ref Komodo bug http://bugs.activestate.com/show_bug.cgi?id=98268
----------
messages: 185474
nosy: ericp
priority: normal
severity: normal
status: open
title: re: Infinite loop with repeated empty alternative
type: enhancement
versions: Python 3.2
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<http://bugs.python.org/issue17568>
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