[commit: haddock] v2.16: Print orphan instances header only if required (b3e5ef8)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/haddock

On branch  : v2.16
Link       : http://git.haskell.org/haddock.git/commitdiff/b3e5ef8b70d6e06e79b599348cbdd617d15478de

>---------------------------------------------------------------

commit b3e5ef8b70d6e06e79b599348cbdd617d15478de
Author: Oleg Grenrus <oleg.grenrus at iki.fi>
Date:   Mon Sep 28 07:24:58 2015 +0300

    Print orphan instances header only if required


>---------------------------------------------------------------

b3e5ef8b70d6e06e79b599348cbdd617d15478de
 haddock-api/src/Haddock/Backends/Xhtml.hs        | 2 +-
 haddock-api/src/Haddock/Backends/Xhtml/Layout.hs | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/haddock-api/src/Haddock/Backends/Xhtml.hs b/haddock-api/src/Haddock/Backends/Xhtml.hs
index fce9581..de4e8a1 100644
--- a/haddock-api/src/Haddock/Backends/Xhtml.hs
+++ b/haddock-api/src/Haddock/Backends/Xhtml.hs
@@ -564,7 +564,7 @@ ifaceToHtml maybe_source_url maybe_wiki_url iface unicode qual
       foldr (+++) noHtml $
         mapMaybe (processExport False linksInfo unicode qual) exports
 
-    orphans = (h1 << "Orphan instances") +++
+    orphans =
       ppOrphanInstances linksInfo (ifaceRnOrphanInstances iface) False unicode qual
 
     linksInfo = (maybe_source_url, maybe_wiki_url)
diff --git a/haddock-api/src/Haddock/Backends/Xhtml/Layout.hs b/haddock-api/src/Haddock/Backends/Xhtml/Layout.hs
index b20cd17..3c13249 100644
--- a/haddock-api/src/Haddock/Backends/Xhtml/Layout.hs
+++ b/haddock-api/src/Haddock/Backends/Xhtml/Layout.hs
@@ -204,8 +204,9 @@ subInstances qual nm lnks splice = maybe noHtml wrap . instTable
 subOrphanInstances :: Qualification
                    -> LinksInfo -> Bool
                    -> [(SubDecl,Located DocName)] -> Html
-subOrphanInstances qual lnks splice  = maybe noHtml id . instTable
+subOrphanInstances qual lnks splice  = maybe noHtml wrap . instTable
   where
+    wrap = ((h1 << "Orphan instances") +++)
     instTable = fmap (thediv ! collapseSection id_ True [] <<) . subTableSrc qual lnks splice
     id_ = makeAnchorId $ "orphans"