[project @ 2006-01-12 09:33:16 by simonmar]

[ghc-hetmet.git] / ghc / compiler / parser / Lexer.x

diff --git a/ghc/compiler/parser/Lexer.x b/ghc/compiler/parser/Lexer.x
index be8dadd..3846b5a 100644 (file)
--- a/ghc/compiler/parser/Lexer.x
+++ b/ghc/compiler/parser/Lexer.x
@@ -559,10 +559,11 @@ reservedSymsFM = listToUFM $
        ,(">>-",        ITRarrowtail,   bit arrowsBit)
 
 #if __GLASGOW_HASKELL__ >= 605
-       ,("∀",        ITforall,       bit tvBit)
-       ,("→",   ITrarrow,    0)
-       ,("←",   ITlarrow,    0)
-       ,("⋯",        ITdotdot,       0)
+       ,("λ", ITlam,          bit glaExtsBit)
+       ,("∀",        ITforall,       bit glaExtsBit)
+       ,("→",   ITrarrow,    bit glaExtsBit)
+       ,("←",   ITlarrow,    bit glaExtsBit)
+       ,("⋯",        ITdotdot,       bit glaExtsBit)
 #endif
        ]
 
@@ -1381,6 +1382,10 @@ lexToken = do
        span `seq` setLastToken span bytes
        t span buf bytes
 
+-- ToDo: Alex reports the buffer at the start of the erroneous lexeme,
+-- but it would be more informative to report the location where the
+-- error was actually discovered, especially if this is a decoding
+-- error.
 reportLexError loc1 loc2 buf str = 
   let 
        c = fst (nextChar buf)