Don't completely dump the regex cache when full #72480
Description
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 = 'https://github.com/serhiy-storchaka'
closed_at = <Date 2017-09-26.16:58:08.958>
created_at = <Date 2016-09-28.04:49:29.801>
labels = ['expert-regex', '3.7', 'library', 'performance']
title = "Don't completely dump the regex cache when full"
updated_at = <Date 2017-09-26.16:58:08.957>
user = 'https://github.com/rhettinger'bugs.python.org fields:
activity = <Date 2017-09-26.16:58:08.957>
actor = 'serhiy.storchaka'
assignee = 'serhiy.storchaka'
closed = True
closed_date = <Date 2017-09-26.16:58:08.958>
closer = 'serhiy.storchaka'
components = ['Library (Lib)', 'Regular Expressions']
creation = <Date 2016-09-28.04:49:29.801>
creator = 'rhettinger'
dependencies = []
files = ['44852', '44853', '44854', '44855']
hgrepos = []
issue_num = 28293
keywords = ['patch']
message_count = 20.0
messages = ['277580', '277582', '277583', '277585', '277586', '277587', '277588', '277589', '277590', '277591', '277620', '277667', '277677', '277682', '278885', '278920', '278937', '283983', '303054', '303055']
nosy_count = 9.0
nosy_names = ['barry', 'rhettinger', 'vstinner', 'ezio.melotti', 'mrabarnett', 'methane', 'SilentGhost', 'serhiy.storchaka', 'xiang.zhang']
pr_nums = ['3768']
priority = 'low'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'performance'
url = 'https://bugs.python.org/issue28293'
versions = ['Python 3.7']