[issue32998] regular expression regression in python 3.7

[mike bayer]

mike bayer <mike_mp at zzzcomputing.com> added the comment:

for those watching this would be the findall() case which is consistent between pythons:

import re

for reg in [
    'VARCHAR(30) COLLATE "en_US"',
    'VARCHAR(30)'
]:

    print(re.findall(r'(?: COLLATE.*)?$', reg))


output (all pythons):

[' COLLATE "en_US"', '']
['']

so yes there are two matches for one and only one for the other.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue32998>
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