spawn command when no completion is available (if alwaysHighlight is True); changes commandToComplete in Prompt/Shell to complete the whole word instead of using getLastWord

XMonad/Prompt/Shell.hs

@@ -62,6 +62,7 @@ data Shell = Shell
 instance XPrompt Shell where
     showXPrompt Shell     = "Run: "
     completionToCommand _ = escape
+    commandToComplete _ c = c
 
 shellPrompt :: XPConfig -> X ()
 shellPrompt c = do