From f3c9d3788530e450d1bb23a4fd829bc5a6eed266 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Wed, 5 Mar 2014 13:01:23 -0800
Subject: HTML writer: Add colgroup around col tags.

Also affects EPUB writer.
Closes #877.
---
 src/Text/Pandoc/Writers/HTML.hs | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/Text/Pandoc/Writers/HTML.hs b/src/Text/Pandoc/Writers/HTML.hs
index 3ac2a836f..e0385af25 100644
--- a/src/Text/Pandoc/Writers/HTML.hs
+++ b/src/Text/Pandoc/Writers/HTML.hs
@@ -533,11 +533,16 @@ blockToHtml opts (Table capt aligns widths headers rows') = do
   let percent w = show (truncate (100*w) :: Integer) ++ "%"
   let coltags = if all (== 0.0) widths
                    then mempty
-                   else mconcat $ map (\w ->
-                          if writerHtml5 opts
-                             then H.col ! A.style (toValue $ "width: " ++ percent w)
-                             else H.col ! A.width (toValue $ percent w) >> nl opts)
-                          widths
+                   else do
+                     H.colgroup $ do
+                       nl opts
+                       mapM_ (\w -> do
+                            if writerHtml5 opts
+                               then H.col ! A.style (toValue $ "width: " ++
+                                                      percent w)
+                               else H.col ! A.width (toValue $ percent w)
+                            nl opts) widths
+                     nl opts
   head' <- if all null headers
               then return mempty
               else do
-- 
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