From f508c833f163f25b5ca203b96876f277dd927282 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Thu, 19 Apr 2018 23:01:52 -0700
Subject: Markdown reader:  allow empty attributes.

See #2944.
---
 src/Text/Pandoc/Readers/Markdown.hs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Text/Pandoc/Readers/Markdown.hs b/src/Text/Pandoc/Readers/Markdown.hs
index 3a1346fdc..0d1a83bab 100644
--- a/src/Text/Pandoc/Readers/Markdown.hs
+++ b/src/Text/Pandoc/Readers/Markdown.hs
@@ -674,6 +674,8 @@ keyValAttr = try $ do
   char '='
   val <- enclosed (char '"') (char '"') litChar
      <|> enclosed (char '\'') (char '\'') litChar
+     <|> ("" <$ try (string "\"\""))
+     <|> ("" <$ try (string "''"))
      <|> many (escapedChar' <|> noneOf " \t\n\r}")
   return $ \(id',cs,kvs) ->
     case key of
-- 
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