Org reader: set documentclass meta from LaTeX_class

src/Text/Pandoc/Readers/Org/Meta.hs

@@ -77,6 +77,7 @@ metaValue key =
     "header-includes" -> (key,) <$> accumulatingList key metaInlines
     "latex_header"    -> (inclKey,) <$>
                          accumulatingList inclKey (metaExportSnippet "latex")
+    "latex_class"     -> ("documentclass",) <$> metaString
     _                 -> (key,) <$> metaString
 
 metaInlines :: OrgParser (F MetaValue)

tests/Tests/Readers/Org.hs

@@ -503,6 +503,11 @@ tests =
               meta = setMeta "header-includes" inclList nullMeta
           in Pandoc meta mempty
 
+      , "LaTeX_class option is translated to documentclass" =:
+          "#+LATEX_CLASS: article" =?>
+          let meta = setMeta "documentclass" (MetaString "article") nullMeta
+          in Pandoc meta mempty
+
       , "later meta definitions take precedence" =:
           unlines [ "#+AUTHOR: this will not be used"
                   , "#+author: Max"