Avoid repeated id in section and header in HTML slides.

Previously pandoc would use the same id attribute for the
div or section and the header inside it; now the id is omitted
from the header if the div or section has it.

1 files changed, 2 insertions, 3 deletions

diff --git a/src/Text/Pandoc/Writers/HTML.hs b/src/Text/Pandoc/Writers/HTML.hs
index b1fd9c56f..f9bbe8796 100644
--- a/src/Text/Pandoc/Writers/HTML.hs
+++ b/src/Text/Pandoc/Writers/HTML.hs
@@ -264,9 +264,8 @@ elementToHtml slideLevel opts (Sec level num id' title' elements) = do
                         -- title slides have no content of their own
                         then filter isSec elements
                         else elements
-  let header'' = if (writerStrictMarkdown opts ||
-                     writerSectionDivs opts ||
-                     writerSlideVariant opts == S5Slides)
+  let header'' = if (writerStrictMarkdown opts || writerSectionDivs opts ||
+                     writerSlideVariant opts == S5Slides || slide)
                     then header'
                     else header' ! prefixedId opts id'
   let inNl x = mconcat $ nl opts : intersperse (nl opts) x ++ [nl opts]