Mercurial > hg-stable
changeset 43801:b65bd4b61d78
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
| author | Jun Wu <quark@fb.com> |
|---|---|
| date | Mon, 25 Nov 2019 12:44:04 -0800 |
| parents | aef7b043a36f |
| children | 79750d781928 |
| files | mercurial/utils/dateutil.py |
| diffstat | 1 files changed, 4 insertions(+), 1 deletions(-) [+] |
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--- a/mercurial/utils/dateutil.py Mon Nov 25 12:33:06 2019 -0800 +++ b/mercurial/utils/dateutil.py Mon Nov 25 12:44:04 2019 -0800 @@ -209,6 +209,8 @@ True >>> tz == strtz True + >>> parsedate(b'2000 UTC', formats=extendeddateformats) + (946684800, 0) """ if bias is None: bias = {} @@ -244,7 +246,8 @@ if part[0:1] in b"HMS": b = b"00" else: - b = b"0" + # year, month, and day start from 1 + b = b"1" # this piece is for matching the generic end to today's date n = datestr(now, b"%" + part[0:1])