typeset completion with arguments after cursor

[Mikael Magnusson <mikachu@xxxxxxxxx>]

When you do this
typeset -<tab> a
it just completes an equal sign, instead of the correct options.
Without the `a` present it works fine, but I'm not sure what is
missing from the completion to make this work correctly, and it seems
to use some extra magic than usual as well. "This function uses whacky
features of _arguments"

-- 
Mikael Magnusson