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Tue May 20 20:01:14 CEST 2008 · https://mail.python.org/pipermail/python-dev/2008-May/079620.html

I've just found a strange re behavior:

 >>> import re
 >>> re.sub("(?:ab|b|a)", "+", "cbacbabcabc")
'c++c++c+c'
 >>> re.sub("(?:ab|b|a){2}", "+", "cbacbabcabc")
'c+c+c+c'

In the last case |-separated expressions seems don't tried from left to 
right. Is it bug or just me?

-- 
Dmitry Vasiliev <dima at hlabs.spb.ru>
http://hlabs.spb.ru

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[Python-Dev] Possible bug in re module?