warnings with compgen -C and -F

[isabella parakiss]

What's the point of these two warnings in builtins/complete.def ?

  if (Farg)
    builtin_error (_("warning: -F option may not work as you expect"));
  if (Carg)
    builtin_error (_("warning: -C option may not work as you expect"));

Can they be removed?  It's stupid to provide a function, and warn every
time someone uses it.

It's also impossible to suppress _that_ warning without suppressing any
error from the actual command.

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xoxo iza