From: simonpj@microsoft.com <unknown>
Date: Thu, 21 Jun 2007 14:11:44 +0000 (+0000)
Subject: Another wibble to the head-exploded error message (suggested by David Roundy)
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=e7158cc7c9e32fa65a3f1489fbd4760dbaae9a9d;p=ghc-hetmet.git

Another wibble to the head-exploded error message (suggested by David Roundy)
---

diff --git a/compiler/typecheck/TcPat.lhs b/compiler/typecheck/TcPat.lhs
index a8e2d39..9cea0ea 100644
--- a/compiler/typecheck/TcPat.lhs
+++ b/compiler/typecheck/TcPat.lhs
@@ -920,7 +920,7 @@ patCtxt pat 	    = Just (hang (ptext SLIT("In the pattern:"))
 existentialExplode pat
   = hang (vcat [text "My brain just exploded.",
 	        text "I can't handle pattern bindings for existentially-quantified constructors.",
-	        text "Instead, use a case-expression to unpack the constructor.",
+	        text "Instead, use a case-expression, or do-notation, to unpack the constructor.",
 		text "In the binding group for"])
 	4 (ppr pat)