From 7e9e959548e665773f7eed388c79ff89d2469d24 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Sun, 24 Oct 2010 19:31:06 -0700
Subject: LaTeX & ConTeXt writers: escape [ and ] as {[} and {]}.

This avoids unwanted interpretation as optional arguments
in some contexts, which caused the brackets to silently
disappear!
---
 src/Text/Pandoc/Writers/ConTeXt.hs | 2 ++
 src/Text/Pandoc/Writers/LaTeX.hs   | 2 ++
 2 files changed, 4 insertions(+)

(limited to 'src')

diff --git a/src/Text/Pandoc/Writers/ConTeXt.hs b/src/Text/Pandoc/Writers/ConTeXt.hs
index 395bc2d30..a3a30f0a0 100644
--- a/src/Text/Pandoc/Writers/ConTeXt.hs
+++ b/src/Text/Pandoc/Writers/ConTeXt.hs
@@ -92,6 +92,8 @@ escapeCharForConTeXt ch =
     '#'    -> "\\#"
     '<'    -> "\\letterless{}"
     '>'    -> "\\lettermore{}"
+    '['    -> "{[}"
+    ']'    -> "{]}"
     '_'    -> "\\letterunderscore{}"
     '\160' -> "~"
     x      -> [x]
diff --git a/src/Text/Pandoc/Writers/LaTeX.hs b/src/Text/Pandoc/Writers/LaTeX.hs
index 720c00ac8..5fa345760 100644
--- a/src/Text/Pandoc/Writers/LaTeX.hs
+++ b/src/Text/Pandoc/Writers/LaTeX.hs
@@ -107,6 +107,8 @@ stringToLaTeX = escapeStringUsing latexEscapes
                        , ('|', "\\textbar{}")
                        , ('<', "\\textless{}")
                        , ('>', "\\textgreater{}")
+                       , ('[', "{[}")  -- to avoid interpretation as
+                       , (']', "{]}")  -- optional arguments
                        , ('\160', "~")
                        ]
 
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