X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2FhsSyn%2FHsExpr.lhs;h=06616f16d9041cf2c9965f76207eed98b1a60649;hb=c073f23aba6d88a9479a20ccb53bb98a338638db;hp=56fc9a76b667cab2b9484109d6af4b2b04f710f1;hpb=ba05282d3915e7051b3f016366b971a8506b0093;p=ghc-hetmet.git

diff --git a/compiler/hsSyn/HsExpr.lhs b/compiler/hsSyn/HsExpr.lhs
index 56fc9a7..06616f1 100644
--- a/compiler/hsSyn/HsExpr.lhs
+++ b/compiler/hsSyn/HsExpr.lhs
@@ -1161,11 +1161,15 @@ data HsMatchContext id  -- Context of a Match
   | LambdaExpr                  -- Patterns of a lambda
   | CaseAlt                     -- Patterns and guards on a case alternative
   | ProcExpr                    -- Patterns of a proc
-  | PatBindRhs                  -- Patterns in the *guards* of a pattern binding
+  | PatBindRhs                  -- A pattern binding  eg [y] <- e = e
+
   | RecUpd                      -- Record update [used only in DsExpr to
                                 --    tell matchWrapper what sort of
                                 --    runtime error message to generate]
-  | StmtCtxt (HsStmtContext id) -- Pattern of a do-stmt or list comprehension
+
+  | StmtCtxt (HsStmtContext id) -- Pattern of a do-stmt, list comprehension, 
+    	     		    	-- pattern guard, etc
+
   | ThPatQuote			-- A Template Haskell pattern quotation [p| (a,b) |]
   deriving (Data, Typeable)