[issue13214] Cmd: list available completions from the cmd.Cmd subclass and filter out EOF handler(s)

[Catherine Devlin]

Catherine Devlin added the comment:

Needed to update the patch slightly for Python 3; now that filter() returns an iterator, ``do_help``'s call to 
names = self.get_names()
followed by
            names.sort()
was throwing an error, so I changed get_names to return a list.

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nosy: +Catherine.Devlin
Added file: http://bugs.python.org/file26593/python-cmd-better-filtering-py3.patch

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