re.sub replaces only first 32 matches with re.U flag #55471

assignee = None
closed_at = <Date 2011-02-20.23:01:03.740>
created_at = <Date 2011-02-20.22:28:09.731>
labels = ['type-security', 'expert-regex', 'invalid']
title = 're.sub replaces only first 32 matches with re.U flag'
updated_at = <Date 2011-02-20.23:01:03.731>
user = 'https://bugs.python.org/EugeneMorozov'

activity = <Date 2011-02-20.23:01:03.731>
actor = 'SilentGhost'
assignee = 'none'
closed = True
closed_date = <Date 2011-02-20.23:01:03.740>
closer = 'SilentGhost'
components = ['Regular Expressions']
creation = <Date 2011-02-20.22:28:09.731>
creator = 'Eugene.Morozov'
dependencies = []
files = []
hgrepos = []
issue_num = 11262
keywords = []
message_count = 2.0
messages = ['128923', '128925']
nosy_count = 2.0
nosy_names = ['SilentGhost', 'Eugene.Morozov']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = None
status = 'closed'
superseder = None
type = 'security'
url = 'https://bugs.python.org/issue11262'
versions = ['Python 2.6']