diff --git a/demo/docs/latex.tex b/demo/docs/latex.tex
new file mode 100644
index 00000000..1427168a
--- /dev/null
+++ b/demo/docs/latex.tex
@@ -0,0 +1,22 @@
+\usepackage{amsmath}
+\title{\LaTeX}
+\date{}
+\begin{document}
+  \maketitle
+  \LaTeX{} is a document preparation system for the \TeX{}
+  typesetting program. It offers programmable desktop publishing
+  features and extensive facilities for automating most aspects of
+  typesetting and desktop publishing, including numbering and
+  cross-referencing, tables and figures, page layout, bibliographies,
+  and much more. \LaTeX{} was originally written in 1984 by Leslie
+  Lamport and has become the dominant method for using \TeX; few
+  people write in plain \TeX{} anymore. The current version  is
+  \LaTeXe.
+ 
+  % This is a comment; it will not be shown in the final output.
+  % The following shows a little of the typesetting power of LaTeX:
+  \begin{align}
+    E &= mc^2                              \\
+    m &= \frac{m_0}{\sqrt{1-\frac{v^2}{c^2}}}
+  \end{align}
+\end{document}
\ No newline at end of file
diff --git a/lib/ace/mode/latex_highlight_rules.js b/lib/ace/mode/latex_highlight_rules.js
index 76a6ca90..ad1cdef4 100644
--- a/lib/ace/mode/latex_highlight_rules.js
+++ b/lib/ace/mode/latex_highlight_rules.js
@@ -6,29 +6,28 @@ var TextHighlightRules = require("ace/mode/text_highlight_rules").TextHighlightR
 var LatexHighlightRules = function()
 {   
     this.$rules = {
-        "start" : [
-            {
-                // A tex command e.g. \foo
-                token : "keyword",
-                regex : "\\\\(?:[^a-zA-Z]|[a-zA-Z]+)",
-            },
-            {
-                // Curly and square braces
-                token : "keyword",
-                regex : "[\\{\\}\\]\\[]"
-            },
-            {
-                // Inline math between two $ symbols
-                token : "string",
-                regex : "\\$(?:(?:\\\\.)|(?:[^\\$\\\\]))*?\\$"
-            },
-            {
-                // A comment. Tex comments start with % and go to 
-                // the end of the line
-                token : "comment",
-                regex : "%.*$"
-            }
-        ]
+        "start" : [{
+            // A tex command e.g. \foo
+            token : "keyword",
+            regex : "\\\\(?:[^a-zA-Z]|[a-zA-Z]+)",
+        }, {
+            // Curly and square braces
+            token : "lparen",
+            regex : "[[({]"
+        }, {
+            // Curly and square braces
+            token : "rparen",
+            regex : "[\\])}]"
+        }, {
+            // Inline math between two $ symbols
+            token : "string",
+            regex : "\\$(?:(?:\\\\.)|(?:[^\\$\\\\]))*?\\$"
+        }, {
+            // A comment. Tex comments start with % and go to 
+            // the end of the line
+            token : "comment",
+            regex : "%.*$"
+        }]
     };
 };