Writing multi-part command completion functions

[Felix Rosencrantz <f_rosencrantz@yahoo.com>]

Is there a recommended way to deal with multi-part commands.  For
example, many of  the source control systems cvs, rcs, sccs, and prcs
all have a main command, with the first argument typically being a
sub-command.  Many times the sub-command can be abbreviated.

There are already some completion functions that handle commands like
this (e.g. _cvs).  Is there a preferred way to do this? Is there one
that provides a better example of how to structure such a completion
function(s)?  Would it make sense to add support to make it easier to write
such a function?

Thanks
-FR.


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