[IPython-dev] Feature Request: re completion

[Andrew Malcolmson]

It would be a nice bonus if you could come up with a way to do a
programmable parameter completion feature like in zsh so that, for
instance, if the command entered is 'cd' or 'ls', only file and
directory names are offered as completions, if 'less', only files, etc.

I don't know how you'd handle 'dir' on Windows, though, as this is 
needed to complete both paths and modules.