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swh:1:snp:635f4099902912592851108bcac178ff574f7c5f
Revision b1e4d1b6032d4c82b549233fa08a2c7cfe7e818b authored by Miss Islington (bot) on 14 July 2019, 05:59:56 UTC, committed by Petr Viktorin on 14 July 2019, 05:59:56 UTC
The `allow_abbrev` option for ArgumentParser is documented and intended to disable support for unique prefixes of --options, which may sometimes be ambiguous due to deferred parsing.

However, the initial implementation also broke parsing of grouped short flags, such as `-ab` meaning `-a -b` (or `-a=b`).  Checking the argument for a leading `--` before rejecting it fixes this.

This was prompted by pytest-dev/pytestGH-5469, so a backport to at least 3.8 would be great :smile:
And this is my first PR to CPython, so please let me know if I've missed anything!

https://bugs.python.org/issue26967
(cherry picked from commit dffca9e925ee5c3072663cbe8d4d4768406d5307)

Co-authored-by: Zac Hatfield-Dodds <Zac-HD@users.noreply.github.com>
1 parent b815669
History
Tip revision: 550e4673be538d98b6ddf5550b3922539cf5c4b2 authored by Victor Stinner on 08 December 2020, 23:32:54 UTC
bpo-32381: Add _PyRun_SimpleFileObject() (GH-23709)
Tip revision: 550e467
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