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bpo-24444: fix an error in argparse help when help for an option is blank (GH-28050) (GH-28931)

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(cherry picked from commit 6fafc25aea)

Co-authored-by: andrei kulakov <andrei.avk@gmail.com>
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Miss Islington (bot) 2021-10-13 10:15:43 -07:00 • committed by GitHub
parent f8473f6f76
commit fd2be6da2f
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3 changed files with 44 additions and 5 deletions
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11
Lib/argparse.py
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@ -526,12 +526,13 @@ def _format_action(self, action):
parts = [action_header]
# if there was help for the action, add lines of help text
if action.help:
if action.help and action.help.strip():
help_text = self._expand_help(action)
help_lines = self._split_lines(help_text, help_width)
parts.append('%*s%s\n' % (indent_first, '', help_lines[0]))
for line in help_lines[1:]:
parts.append('%*s%s\n' % (help_position, '', line))
if help_text:
help_lines = self._split_lines(help_text, help_width)
parts.append('%*s%s\n' % (indent_first, '', help_lines[0]))
for line in help_lines[1:]:
parts.append('%*s%s\n' % (help_position, '', line))
# or add a newline if the description doesn't end with one
elif not action_header.endswith('\n'):