From acdbdc035468374cbea2ba2043987dac95c44bfe Mon Sep 17 00:00:00 2001
From: Łukasz Hanuszczak <lukasz.hanuszczak@gmail.com>
Date: Thu, 6 Aug 2015 20:54:59 +0200
Subject: Fix quote syntax for promoted types.

---
 haddock-api/src/Haddock/Backends/Xhtml/Decl.hs  | 6 ++++--
 haddock-api/src/Haddock/Backends/Xhtml/Utils.hs | 7 ++++++-
 2 files changed, 10 insertions(+), 3 deletions(-)

(limited to 'haddock-api/src/Haddock/Backends')

diff --git a/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs b/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
index df85a492..d3900f16 100644
--- a/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
+++ b/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
@@ -874,8 +874,10 @@ ppr_mono_ty _         (HsSpliceTy {})     _ _ = error "ppr_mono_ty HsSpliceTy"
 ppr_mono_ty _         (HsQuasiQuoteTy {}) _ _ = error "ppr_mono_ty HsQuasiQuoteTy"
 ppr_mono_ty _         (HsRecTy {})        _ _ = error "ppr_mono_ty HsRecTy"
 ppr_mono_ty _         (HsCoreTy {})       _ _ = error "ppr_mono_ty HsCoreTy"
-ppr_mono_ty _         (HsExplicitListTy _ tys) u q = quote $ brackets $ hsep $ punctuate comma $ map (ppLType u q) tys
-ppr_mono_ty _         (HsExplicitTupleTy _ tys) u q = quote $ parenList $ map (ppLType u q) tys
+ppr_mono_ty _         (HsExplicitListTy _ tys) u q =
+    promoQuote $ brackets $ hsep $ punctuate comma $ map (ppLType u q) tys
+ppr_mono_ty _         (HsExplicitTupleTy _ tys) u q =
+    promoQuote $ parenList $ map (ppLType u q) tys
 ppr_mono_ty _         (HsWrapTy {})       _ _ = error "ppr_mono_ty HsWrapTy"
 
 ppr_mono_ty ctxt_prec (HsEqTy ty1 ty2) unicode qual
diff --git a/haddock-api/src/Haddock/Backends/Xhtml/Utils.hs b/haddock-api/src/Haddock/Backends/Xhtml/Utils.hs
index 26bcbf6d..98ff4007 100644
--- a/haddock-api/src/Haddock/Backends/Xhtml/Utils.hs
+++ b/haddock-api/src/Haddock/Backends/Xhtml/Utils.hs
@@ -21,7 +21,7 @@ module Haddock.Backends.Xhtml.Utils (
   keyword, punctuate,
 
   braces, brackets, pabrackets, parens, parenList, ubxParenList,
-  arrow, comma, dcolon, dot, darrow, equals, forallSymbol, quote,
+  arrow, comma, dcolon, dot, darrow, equals, forallSymbol, quote, promoQuote,
 
   hsep, vcat,
 
@@ -150,6 +150,11 @@ quote :: Html -> Html
 quote h = char '`' +++ h +++ '`'
 
 
+-- | Promoted type quote (e.g. @'[a, b]@, @'(a, b, c)@).
+promoQuote :: Html -> Html
+promoQuote h = char '\'' +++ h
+
+
 parens, brackets, pabrackets, braces :: Html -> Html
 parens h        = char '(' +++ h +++ char ')'
 brackets h      = char '[' +++ h +++ char ']'
-- 
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