[issue15137] Cleaned source of `cmd` module

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc <amauryfa at gmail.com> added the comment:

The output of "hg diff" would be much appreciated, it's the only way for reviewers to realize the changes you made.

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nosy: +amaury.forgeotdarc

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15137>
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