From 7e2264730d6c05eceb9309fced1d6a3116edc233 Mon Sep 17 00:00:00 2001
From: David Waern <davve@dtek.chalmers.se>
Date: Sat, 29 Sep 2007 15:17:40 +0000
Subject: Take care when pp tyvars - add parens on syms

---
 src/Haddock/Backends/Html.hs | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/Haddock/Backends/Html.hs b/src/Haddock/Backends/Html.hs
index a8caef72..84d68f2e 100644
--- a/src/Haddock/Backends/Html.hs
+++ b/src/Haddock/Backends/Html.hs
@@ -716,7 +716,7 @@ ppSig summary links loc mbDoc (TypeSig lname ltype)
   do_args leader t
     = argBox (leader <+> ppType t) <-> rdocBox (noHtml)
 
-ppTyVars tvs = map ppName (tyvarNames tvs)
+ppTyVars tvs = ppTyNames (tyvarNames tvs)
 
 tyvarNames = map f 
   where f x = let NoLink n = hsTyVarName (unLoc x) in n
@@ -737,6 +737,15 @@ ppLType (L _ t) = ppType t
 ppTypeSig :: Bool -> Name -> (HsType DocName) -> Html
 ppTypeSig summary nm ty = ppBinder summary nm <+> dcolon <+> ppType ty
 
+
+ppTyName name
+  | isNameSym name = parens (ppName name)
+  | otherwise = ppName name
+
+
+ppTyNames = map ppTyName
+
+
 --------------------------------------------------------------------------------
 -- Contexts 
 --------------------------------------------------------------------------------
@@ -1136,11 +1145,11 @@ ppDataHead summary name tyvars
   -- but GHC doesn't keep this information
 
   -- T a b c
-  | otherwise = ppBinder summary name <+> hsep (map ppName tyvars)
+  | otherwise = ppBinder summary name <+> hsep (ppTyNames tyvars) 
 
   where 
-    first2        = ppName a <+> ppBinder summary name <+> ppName b
-    rest          = hsep $ map ppName restTypes
+    first2        = ppTyName a <+> ppBinder summary name <+> ppTyName b
+    rest          = hsep $ ppTyNames restTypes
     a:b:restTypes = tyvars
 
 
-- 
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