[GHC] #7995: module Pretty's "text/str" rule doesn't fire

[GHC]

#7995: module Pretty's "text/str" rule doesn't fire
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Reporter:  parcs             |          Owner:                  
    Type:  bug               |         Status:  new             
Priority:  normal            |      Component:  Compiler        
 Version:  7.7               |       Keywords:                  
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
 Failure:  None/Unknown      |      Blockedby:                  
Blocking:                    |        Related:                  
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 In this trivial but characteristic example

 {{{
 import Pretty
 import Data.IORef

 main :: IO ()
 main = do
     _ <- newIORef (text "test")
     return ()
 }}}

 the "text/str" rule, which optimizes calls to `Pretty.text` applied to a
 string literal argument, doesn't fire. Likewise, such calls to
 `Outputable.text` don't get rewritten either.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7995>
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