Case-insensitive case matching

[Kars Meyboom]

Greetings,

After an unsuccessful attempt searching groups.google.com for the
answer, I've decided to post my question here.

Is there any way to perform a case-insensitive case command? As in,

case "$1" in
  *.c)
    ...nifty shell code...

would match both file.c and File.C? I've already tried using "shopt -s
nocaseglob", but that didn't affect case statements.

Kind regards,
Kars Meyboom.