patchbomb: use cmdutil.check_at_most_one_arg()
Differential Revision: https://phab.mercurial-scm.org/D7637
# See http://EditorConfig.org for the specification
root = true
[*.py]
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indent_style = space
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[*.{c,h}]
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indent_style = tab
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[*.t]
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indent_style = space
trim_trailing_whitespace = false