Revert "Implemented Ext_markdown_attribute."

This reverts commit 78d3a0fb9d3f862d5e2b61bd45434f7af9cd9f18.

2 files changed, 1 insertions, 11 deletions

diff --git a/src/Text/Pandoc/Options.hs b/src/Text/Pandoc/Options.hs
index 6d235e7a8..f7f07a939 100644
--- a/src/Text/Pandoc/Options.hs
+++ b/src/Text/Pandoc/Options.hs
@@ -64,7 +64,6 @@ data Extension = Ext_footnotes
                | Ext_delimited_code_blocks
                | Ext_inline_code_attributes
                | Ext_markdown_in_html_blocks
-               | Ext_markdown_attribute
                | Ext_escaped_line_breaks
                | Ext_autolink_code_spans
                | Ext_fancy_lists
diff --git a/src/Text/Pandoc/Readers/Markdown.hs b/src/Text/Pandoc/Readers/Markdown.hs
index fbcdeeb14..8a1299de6 100644
--- a/src/Text/Pandoc/Readers/Markdown.hs
+++ b/src/Text/Pandoc/Readers/Markdown.hs
@@ -736,19 +736,10 @@ rawTeXBlock = do
   spaces
   return $ return result
 
-addMarkdownAttribute :: (Tag String, String) -> Parser [Char] ParserState String
-addMarkdownAttribute (t,s) = do
-  (guardDisabled Ext_markdown_attribute >> return s)
- <|>  case t of
-       TagOpen x attrs
-         | "markdown" `elem` map fst attrs -> return s
-         | otherwise -> return $ renderTags [TagOpen x (("markdown","1"):attrs)]
-       _ -> return s
-
 rawHtmlBlocks :: Parser [Char] ParserState String
 rawHtmlBlocks = do
   htmlBlocks <- many1 $ do blk <- rawVerbatimBlock <|>
-                                   (htmlTag isBlockTag >>= addMarkdownAttribute)
+                                   liftM snd (htmlTag isBlockTag)
                            sps <- do sp1 <- many spaceChar
                                      sp2 <- option "" (blankline >> return "\n")
                                      sp3 <- many spaceChar