Fix broken "--override" action in Python 3.7 and below.
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1 changed files with 16 additions and 1 deletions
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@ -1,5 +1,5 @@
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import collections
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from argparse import ArgumentParser
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from argparse import Action, ArgumentParser
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from borgmatic.config import collect
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@ -102,6 +102,20 @@ def parse_global_arguments(unparsed_arguments, top_level_parser, subparsers):
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return top_level_parser.parse_args(remaining_arguments)
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class Extend_action(Action):
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'''
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An argparse action to support Python 3.8's "extend" action in older versions of Python.
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'''
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def __call__(self, parser, namespace, values, option_string=None):
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items = getattr(namespace, self.dest, None)
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if items:
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items.extend(values)
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else:
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setattr(namespace, self.dest, list(values))
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def parse_arguments(*unparsed_arguments):
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'''
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Given command-line arguments with which this script was invoked, parse the arguments and return
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@ -111,6 +125,7 @@ def parse_arguments(*unparsed_arguments):
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unexpanded_config_paths = collect.get_default_config_paths(expand_home=False)
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global_parser = ArgumentParser(add_help=False)
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global_parser.register('action', 'extend', Extend_action)
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global_group = global_parser.add_argument_group('global arguments')
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global_group.add_argument(
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