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3.6 regression: re.compile not handling flags with X correctly #72257
Description
| BPO | 28070 |
|---|---|
| Nosy | @ezio-melotti, @serhiy-storchaka, @yan12125 |
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
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GitHub fields:
assignee = None
closed_at = <Date 2016-09-10.22:44:20.690>
created_at = <Date 2016-09-10.22:07:45.732>
labels = ['expert-regex', 'type-bug', '3.7']
title = '3.6 regression: re.compile not handling flags with X correctly'
updated_at = <Date 2016-09-11.07:41:51.734>
user = 'https://github.com/yan12125'bugs.python.org fields:
activity = <Date 2016-09-11.07:41:51.734>
actor = 'yan12125'
assignee = 'none'
closed = True
closed_date = <Date 2016-09-10.22:44:20.690>
closer = 'serhiy.storchaka'
components = ['Regular Expressions']
creation = <Date 2016-09-10.22:07:45.732>
creator = 'yan12125'
dependencies = []
files = []
hgrepos = []
issue_num = 28070
keywords = []
message_count = 5.0
messages = ['275705', '275706', '275708', '275709', '275738']
nosy_count = 6.0
nosy_names = ['ezio.melotti', 'mrabarnett', 'SilentGhost', 'python-dev', 'serhiy.storchaka', 'yan12125']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue28070'
versions = ['Python 3.6', 'Python 3.7']
Activity
yan12125 commentedon Sep 10, 2016
This test script:
print(re.compile(r'(?ix)A').flags == re.I | re.X | re.U)
print(re.compile(r'(?ix)A').flags == re.X | re.U)
print(re.compile(r'(?im)A').flags == re.I | re.M | re.U)
gives False, True, True on default:b28b37de9470+. Python 3.5.2 gives True, False, True.
Seems re.compile does not handle flags with X correctly?
SilentGhost commentedon Sep 10, 2016
I get normal behaviour on e3dbe8b7279a
python-dev commentedon Sep 10, 2016
New changeset bee52e5f8fb1 by Serhiy Storchaka in branch 'default':
Issue bpo-28070: Fixed parsing inline verbose flag in regular expressions.
https://hg.python.org/cpython/rev/bee52e5f8fb1
New changeset 842e75f0e592 by Serhiy Storchaka in branch '3.5':
Backported tests for issue bpo-28070.
https://hg.python.org/cpython/rev/842e75f0e592
New changeset afc0d4478083 by Serhiy Storchaka in branch '2.7':
Backported tests for issue bpo-28070.
https://hg.python.org/cpython/rev/afc0d4478083
serhiy-storchaka commentedon Sep 10, 2016
Thank you for your report Chi Hsuan Yen!
yan12125 commentedon Sep 11, 2016
Thanks for such a quick fix!