[issue1647489] zero-length match confuses re.finditer()

[Denver Coneybeare]

Denver Coneybeare <denver.coneybeare at gmail.com> added the comment:

I just re-tested this issue in trunk at changeset 053bc5ca199b and the issue is still exactly reproducible as originally reported.  That is, the match to the empty string skips a character of the match:

>>> import re
>>> [m.groups() for m in re.finditer(r'(^z*)|(\w+)', 'abc')]
[('', None), (None, 'bc')]

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nosy: +denversc

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