T.P.Shared, makeSections: put some attributes on section element only.

Certain `role` and `epub:type` attributes should only be on the section
(and indeed, many `role`s give a validation error if left on the heading
element).

src/Text/Pandoc/Shared.hs

@@ -547,9 +547,14 @@ makeSectionsWithOffsets numoffsets numbering mbBaseLevel bs =
                         ("number", T.intercalate "." (map tshow newnum)) : kvs
                   _ -> kvs
     let divattr = (ident, "section":classes, kvs')
-    let attr = ("",classes,kvs')
+    let isHeadingAttr ("epub:type",_) = False
+        isHeadingAttr ("role",v) =
+          v `elem` ["tab", "presentation", "none", "treeitem",
+                    "menuitem", "button", "heading"]
+        isHeadingAttr _ = True
+    let hattr = ("",classes, filter isHeadingAttr kvs')
     return $
-      Div divattr (Header level' attr title' : sectionContents') : rest'
+      Div divattr (Header level' hattr title' : sectionContents') : rest'
   go (Div divattr@(dident,dclasses,_) (Header level hattr title':ys) : xs)
       | all (\case
                Header level' _ _ -> level' > level

src/Text/Pandoc/Writers/DocBook.hs

@@ -174,7 +174,8 @@ imageToDocBook _ attr src = selfClosingTag "imagedata" $
 blockToDocBook :: PandocMonad m => WriterOptions -> Block -> DB m (Doc Text)
 -- Add ids to paragraphs in divs with ids - this is needed for
 -- pandoc-citeproc to get link anchors in bibliographies:
-blockToDocBook opts (Div (id',"section":_,_) (Header lvl (_,classes,attrs) ils : xs)) = do
+blockToDocBook opts (Div (id',"section":_classes,divattrs)
+                     (Header lvl (_,hclasses,_) ils : xs)) = do
   version <- ask
   -- DocBook doesn't allow sections with no content, so insert some if needed
   let bs = if null xs
@@ -198,7 +199,7 @@ blockToDocBook opts (Div (id',"section":_,_) (Header lvl (_,classes,attrs) ils :
 
       -- Populate miscAttr with Header.Attr.attributes, filtering out non-valid DocBook section attributes, id, and xml:id
       -- Also enrich the role attribute with certain class tokens
-      miscAttr = enrichRole (filter (isSectionAttr version) attrs) classes
+      miscAttr = enrichRole (filter (isSectionAttr version) divattrs) hclasses
       attribs = nsAttr <> idAttr <> miscAttr
   title' <- inlinesToDocBook opts ils
   contents <- blocksToDocBook opts bs