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gh-80448: argparse: Fix IndexError on store_true action (#15656)

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Co-authored-by: Rémi Lapeyre <remi.lapeyre@henki.fr>
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
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Hai Shi 2022-11-12 09:51:38 +08:00 • committed by GitHub
parent 7f3a4b967c
commit e02cc6d42a
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3 changed files with 7 additions and 2 deletions
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6
Lib/argparse.py
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@ -1997,7 +1997,11 @@ class ArgumentParser(_AttributeHolder, _ActionsContainer):
# arguments, try to parse more single-dash options out
# of the tail of the option string
chars = self.prefix_chars
if arg_count == 0 and option_string[1] not in chars:
if (
arg_count == 0
and option_string[1] not in chars
and explicit_arg != ''
):
action_tuples.append((action, [], option_string))
char = option_string[0]
option_string = char + explicit_arg[0]