Quoted terminals are not escaped in --glr mode

[yaitskov]

Hi,

Happy (2.1.7) does not escape quoted terminals in Haskell:

data GSymbol = HappyEOF | HappyTok {-!Int-} (Token) | G_Exp 
 | G_Exp1 
 | G_Term 
 | G_Factor 
 | G_Embraced__','__Exp__ 
   deriving (Show,Eq,Ord)

Embraced(o,s)
      : o s o                  { $2 }

Factor
      : int                    { Int $1 }
      | var                   { Var $1 }
      | Embraced(',', Exp)      { Brack $1 }