XMonad.Actions.Search: removeColonPrefix shouldn't throw an exception if no :!
XMonad.Actions.Search: removeColonPrefix shouldn't throw an exception if no :!

Ignore-this: db0a25c0d615c3d8cb6ef31489919d91

darcs-hash:20090808002224-f7719-27d50f4f65324ac26594f0518081817aae17353c

kmels/xmonad-launcher,kmels/xmonad-launcher