use the native unicode support from GHC 6.12

src/compiler/GF/Compile/Coding.hs

@@ -8,12 +8,14 @@ import GF.Infra.Option
 import GF.Data.Operations
 
 import Data.Char
+import System.IO
+import qualified Data.ByteString.Char8 as BS
 
-encodeStringsInModule :: SourceModule -> SourceModule
-encodeStringsInModule = codeSourceModule (encodeUnicode UTF_8)
+encodeStringsInModule :: TextEncoding -> SourceModule -> SourceModule
+encodeStringsInModule enc = codeSourceModule (BS.unpack . encodeUnicode enc)
 
-decodeStringsInModule :: SourceModule -> SourceModule
-decodeStringsInModule mo = codeSourceModule (decodeUnicode (flag optEncoding (flagsModule mo))) mo
+decodeStringsInModule :: TextEncoding -> SourceModule -> SourceModule
+decodeStringsInModule enc mo = codeSourceModule (decodeUnicode enc . BS.pack) mo
 
 codeSourceModule :: (String -> String) -> SourceModule -> SourceModule
 codeSourceModule co (id,mo) = (id,replaceJudgements mo (mapTree codj (jments mo)))

src/compiler/GF/Compile/PGFtoHaskell.hs

@@ -22,7 +22,6 @@ import PGF.Macros
 
 import GF.Data.Operations
 import GF.Infra.Option
-import GF.Text.UTF8
 
 import Data.List --(isPrefixOf, find, intersperse)
 import qualified Data.Map as Map
@@ -34,7 +33,7 @@ grammar2haskell :: Options
                 -> String  -- ^ Module name.
                 -> PGF
                 -> String
-grammar2haskell opts name gr = encodeUTF8 $ foldr (++++) [] $  
+grammar2haskell opts name gr = foldr (++++) [] $  
   pragmas ++ haskPreamble name ++ [types, gfinstances gId lexical gr']
     where gr' = hSkeleton gr
           gadt = haskellOption opts HaskellGADT

src/compiler/GF/Compile/PGFtoJS.hs

@@ -6,7 +6,6 @@ import qualified PGF.Macros as M
 import qualified GF.JavaScript.AbsJS as JS
 import qualified GF.JavaScript.PrintJS as JS
 
-import GF.Text.UTF8
 import GF.Data.ErrM
 import GF.Infra.Option
 
@@ -21,7 +20,7 @@ import qualified Data.IntMap as IntMap
 
 pgf2js :: PGF -> String
 pgf2js pgf =
-  encodeUTF8 $ JS.printTree $ JS.Program [JS.ElStmt $ JS.SDeclOrExpr $ JS.Decl [JS.DInit (JS.Ident n) grammar]]
+  JS.printTree $ JS.Program [JS.ElStmt $ JS.SDeclOrExpr $ JS.Decl [JS.DInit (JS.Ident n) grammar]]
  where
    n  = showCId $ absname pgf
    as = abstract pgf

src/compiler/GF/Compile/PGFtoProlog.hs

@@ -15,7 +15,6 @@ import PGF.Data
 import PGF.Macros
 
 import GF.Data.Operations
-import GF.Text.UTF8
 
 import qualified Data.Map as Map
 import Data.Char (isAlphaNum, isAsciiLower, isAsciiUpper, ord)