Prompt.hs: +a historyCompletion function for use in XPrompts
Prompt.hs: +a historyCompletion function for use in XPrompts

darcs-hash:20080607071225-f7719-4e0154662c45e9a3fc4d575e4eda0963598d8248

jthornber/XMonadContrib,jthornber/XMonadContrib