From 5a9c393c8f0f6d24fa185f4acbb39e40a0f534a6 Mon Sep 17 00:00:00 2001
From: Sebastian Meric de Bellefon <arnaudpourseb@gmail.com>
Date: Thu, 16 Jun 2016 00:46:46 -0400
Subject: Copyright holders shown on several lines. Fix #279

---
 haddock-api/src/Haddock/Backends/Xhtml.hs | 18 ++++++++++++++----
 html-test/ref/Bug280.html                 |  8 ++++----
 html-test/ref/Test.html                   |  2 +-
 3 files changed, 19 insertions(+), 9 deletions(-)

diff --git a/haddock-api/src/Haddock/Backends/Xhtml.hs b/haddock-api/src/Haddock/Backends/Xhtml.hs
index 8252839c..0958c2cd 100644
--- a/haddock-api/src/Haddock/Backends/Xhtml.hs
+++ b/haddock-api/src/Haddock/Backends/Xhtml.hs
@@ -35,8 +35,8 @@ import Text.XHtml hiding ( name, title, p, quote )
 import Haddock.GhcUtils
 
 import Control.Monad         ( when, unless )
-import Data.Char             ( toUpper )
-import Data.List             ( sortBy, intercalate, isPrefixOf )
+import Data.Char             ( toUpper, isSpace )
+import Data.List             ( sortBy, intercalate, isPrefixOf, intersperse )
 import Data.Maybe
 import System.FilePath hiding ( (</>) )
 import System.Directory
@@ -201,8 +201,7 @@ moduleInfo iface =
         field info >>= \a -> return (th << fieldName <-> td << a)
 
       entries :: [HtmlTable]
-      entries = mapMaybe doOneEntry [
-          ("Copyright",hmi_copyright),
+      entries = maybeToList copyrightsTable ++ mapMaybe doOneEntry [
           ("License",hmi_license),
           ("Maintainer",hmi_maintainer),
           ("Stability",hmi_stability),
@@ -216,6 +215,14 @@ moduleInfo iface =
             Just Haskell98 -> Just "Haskell98"
             Just Haskell2010 -> Just "Haskell2010"
 
+          multilineRow :: String -> [String] -> HtmlTable
+          multilineRow title xs = (th ! [valign "top"]) << title <-> td << (toLines xs)
+            where toLines = mconcat . intersperse br . map toHtml
+
+          copyrightsTable :: Maybe HtmlTable
+          copyrightsTable = fmap (multilineRow "Copyright" . split) (hmi_copyright info)
+            where split = map (trim . filter (/= ',')) . lines
+
           extsForm
             | OptShowExtensions `elem` ifaceOptions iface =
               let fs = map (dropOpt . show) (hmi_extensions info)
@@ -648,6 +655,9 @@ processDecl :: Bool -> Html -> Maybe Html
 processDecl True = Just
 processDecl False = Just . divTopDecl
 
+trim :: String -> String
+trim = f . f
+  where f = reverse . dropWhile isSpace
 
 processDeclOneLiner :: Bool -> Html -> Maybe Html
 processDeclOneLiner True = Just
diff --git a/html-test/ref/Bug280.html b/html-test/ref/Bug280.html
index f154f300..92eb61b0 100644
--- a/html-test/ref/Bug280.html
+++ b/html-test/ref/Bug280.html
@@ -34,12 +34,12 @@ window.onload = function () {pageLoad();setSynopsis("mini_Bug280.html");};
     ><div id="module-header"
       ><table class="info"
 	><tr
-	  ><th
+	  ><th valign="top"
 	    >Copyright</th
 	    ><td
-	    >Foo,
-           Bar,
-           Baz</td
+	    >Foo<br
+         />Bar<br
+         />Baz</td
 	    ></tr
 	  ><tr
 	  ><th
diff --git a/html-test/ref/Test.html b/html-test/ref/Test.html
index e493af28..a98b2228 100644
--- a/html-test/ref/Test.html
+++ b/html-test/ref/Test.html
@@ -33,7 +33,7 @@ window.onload = function () {pageLoad();setSynopsis(&quot;mini_Test.html&quot;);
     ><div id="module-header"
       ><table class="info"
 	><tr
-	  ><th
+	  ><th valign="top"
 	    >Copyright</th
 	    ><td
 	    >(c) Simon Marlow 2002</td
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