Configurable completion and complete -P (prefix)

[Hans Meine]

Hi!

I just tried read about the complete command in the bash-manpage and tried

  complete -A signal -P '-' kill

hoping that I could do:

  kill -SIG<tab>

However, bash currently uses the prefix only if I do

  kill SIG<tab>

ending up in

  kill -SIG<tab>

which in turn gives me no completions. :-( Thinking about this, is the -P
prefix thingy useful like this in other cases? I can't imagine one right now?
Never mind if this behaviour is intended, I am just curious if I can use
it like that in the future. ;-)

Bye,
   /  /
  /--/
 /  / ANS

/me continues exploring the manpage.. ;-)