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3.6 regression: re.compile not handling flags with X correctly #72257

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yan12125 mannequin opened this issue Sep 10, 2016 · 5 comments
Closed

3.6 regression: re.compile not handling flags with X correctly #72257

yan12125 mannequin opened this issue Sep 10, 2016 · 5 comments
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3.7 (EOL) end of life topic-regex type-bug An unexpected behavior, bug, or error

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@yan12125
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yan12125 mannequin commented Sep 10, 2016

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']
@yan12125
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yan12125 mannequin commented Sep 10, 2016

This test script:

import re

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?

@yan12125 yan12125 mannequin added 3.7 (EOL) end of life topic-regex type-bug An unexpected behavior, bug, or error labels Sep 10, 2016
@SilentGhost
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SilentGhost mannequin commented Sep 10, 2016

I get normal behaviour on e3dbe8b7279a

@python-dev
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python-dev mannequin commented 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
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Thank you for your report Chi Hsuan Yen!

@yan12125
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yan12125 mannequin commented Sep 11, 2016

Thanks for such a quick fix!

@ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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