From 459805de4c4e7129dc624086a654febb161f99ad Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Mon, 16 Jun 2014 17:43:56 -0700
Subject: [PATCH] LaTeX reader:  don't assume preamble doesn't contain
 environments.

Closes #1338.
---
 src/Text/Pandoc/Readers/LaTeX.hs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Text/Pandoc/Readers/LaTeX.hs b/src/Text/Pandoc/Readers/LaTeX.hs
index 6b5958920..9e7a38b8f 100644
--- a/src/Text/Pandoc/Readers/LaTeX.hs
+++ b/src/Text/Pandoc/Readers/LaTeX.hs
@@ -1134,7 +1134,7 @@ paragraph = do
 
 preamble :: LP Blocks
 preamble = mempty <$> manyTill preambleBlock beginDoc
-  where beginDoc = lookAhead $ controlSeq "begin" *> string "{document}"
+  where beginDoc = lookAhead $ try $ controlSeq "begin" *> string "{document}"
         preambleBlock =  (void comment)
                      <|> (void sp)
                      <|> (void blanklines)