From 5d02e478d0524cee52991740ffdf0ee87296b5d4 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Mon, 31 Oct 2016 22:04:22 +0100
Subject: LaTeX reader: allow for []s inside LaTeX optional args.

Fixes cases like:

    \begin{center}
    \begin{tikzpicture}[baseline={([yshift=+-.5ex]current bounding box.center)}, level distance=24pt]
    \Tree [.{S} [.NP John\index{i} ] [.VP [.V likes ] [.NP himself\index{i,*j} ]]]
    \end{tikzpicture}
    \end{center}
---
 src/Text/Pandoc/Readers/LaTeX.hs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/Text')

diff --git a/src/Text/Pandoc/Readers/LaTeX.hs b/src/Text/Pandoc/Readers/LaTeX.hs
index cb6b183f9..d35bf5182 100644
--- a/src/Text/Pandoc/Readers/LaTeX.hs
+++ b/src/Text/Pandoc/Readers/LaTeX.hs
@@ -861,7 +861,8 @@ opt = bracketed inline
 
 rawopt :: LP String
 rawopt = do
-  contents <- bracketed (many1 (noneOf "]") <|> try (string "\\]"))
+  contents <- bracketed (many1 (noneOf "[]") <|> try (string "\\]") <|>
+                   try (string "\\[") <|> rawopt)
   optional sp
   return $ "[" ++ contents ++ "]"
 
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