paul j3 added the comment:
The usage line formatter needs a major rewrite.
Currently it formats usage for all the arguments as one line (two actually,
optionals and positionals are handled separately), and then breaks it into
'wrappable parts'. It then compiles the lines from these parts
# break usage into wrappable parts
part_regexp = r'\(.*?\)+|\[.*?\]+|\S+'
So it's keeping things enclosed in brackets together, but allowing the
'required' arguments to be split.
Certain characters like [] in the metavars also break this usage.
http://bugs.python.org/issue11874
has a patch with a usage rewrite hopefully will take care of this problem. It
collects the formatted arguments in a list rather than a concatenated string,
so there's no need for this buggy splitter.
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nosy: +paul.j3
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue26503>
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