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-rw-r--r--src/Text/Pandoc/Readers/Markdown.hs8
1 files changed, 3 insertions, 5 deletions
diff --git a/src/Text/Pandoc/Readers/Markdown.hs b/src/Text/Pandoc/Readers/Markdown.hs
index a94a0a06e..91f437372 100644
--- a/src/Text/Pandoc/Readers/Markdown.hs
+++ b/src/Text/Pandoc/Readers/Markdown.hs
@@ -171,12 +171,10 @@ parseMarkdown = do
-- need to parse raw HTML, since markdown allows it
(title, author, date) <- option ([],[],"") titleBlock
oldState <- getState
- oldInput <- getInput
-- go through once just to get list of reference keys
- manyTill (referenceKey <|> (do{anyLine; return Null})) eof
- newState <- getState
- let keysUsed = stateKeysUsed newState
- setInput oldInput
+ keysUsed <- lookAhead $ (do {manyTill (referenceKey <|> (do{anyLine; return Null})) eof;
+ newState <- getState;
+ return $ stateKeysUsed newState})
setState (oldState { stateKeysUsed = keysUsed })
blocks <- parseBlocks -- go through again, for real
let blocks' = filter (/= Null) blocks