dateutil: correct default for Ymd in parsedate...
dateutil: correct default for Ymd in parsedate
The code uses `0` for the default value of Ymd (year, month, and day), which
seems suboptimal. For example, these will fail to parse:
dateutil.parsedate('2000', formats=dateutil.extendeddateformats)
dateutil.parsedate('Jan 2000', formats=dateutil.extendeddateformats)
Fix it by providing sane defaults (1 instead of 0) for year, month, and day.
The suboptimal behavior was introduced by 91bc001a592 (2010-12-29,
"date: fix matching of underspecified date ranges"), which does not seem to
justify the current behavior.
Note end-users should not notice the subtle issue, because there are no formats
in `defaultdateformats` that allow an explicit year with omitted month, or an
explicit month with omitted day.
Differential Revision:
https://phab.mercurial-scm.org/D7520
