[Improve error message in Grin.FromE
Samuel Bronson <naesten@gmail.com>**20090130220548] hunk ./Grin/FromE.hs 527
-    ce e = error $ "ce: " ++ render (pprint (funcName,e))
+    ce e = error $ render (text "Grin.FromE.compile'.ce in function:" <+> pprint funcName
+                           <$> text "can't grok expression:" <+> pprint e)