Hi,
the only gripe I have with it: whenever some options are added, or
removed, or renamed, you have to adapt the completion script. That is why
I started (ages ago) to auto-generate the completion script from the
documentation (of course, this means that the options have to be described
consistently in the documentation, which is good in its own).
Unfortunately, I never got around to finish it, but a preliminary version
is in the mailing list archives.
However, since your script works well, and I do not have a working script,
you clearly won! So, unless some kind soul actually implements my
proposal, I am happy with your script.
Ciao,
Dscho