ace-markdown.patch

diff --git a/lib/ace/mode/markdown_highlight_rules.js b/lib/ace/mode/markdown_highlight_rules.js
index 1e76cc0..9d76802 100644
--- a/lib/ace/mode/markdown_highlight_rules.js
+++ b/lib/ace/mode/markdown_highlight_rules.js
@@ -93,6 +93,10 @@ function github_embed(tag, prefix) {
         token : "markup.list",
         regex : "^\\s{0,3}(?:[*+-]|\\d+\\.)\\s+",
         next  : "listblock-start"
+    }, { // LaTeX equation
+        token : "language",
+        regex : /\${1,2}(?=[^$]+)/,
+        next  : "equation"
     }, {
         include : "basic"
     });
@@ -101,6 +105,9 @@ function github_embed(tag, prefix) {
         "basic" : [{
             token : "constant.language.escape",
             regex : /\\[\\`*_{}\[\]()#+\-.!]/
+        }, { // line brake
+            token : "underline",
+            regex : / {2}$/
         }, { // code span `
             token : "support.function",
             regex : "(`+)(.*?[^`])(\\1)"
@@ -118,12 +125,18 @@ function github_embed(tag, prefix) {
                     '((?:[^\\)\\s\\\\]|\\\\.|\\s(?=[^"]))*)' +        // href
                     '(\\s*"' +  escaped('"') + '"\\s*)?' +            // "title"
                     "(\\))"                                           // )
+        }, { // wiki link
+            token : ["text", "markup.underline", "text"],
+            regex : /(\[{2})(.*?[^\]])(\]{2})/
         }, { // strong ** __
             token : "string.strong",
             regex : "([*]{2}|[_]{2}(?=\\S))(.*?\\S[*_]*)(\\1)"
         }, { // emphasis * _
             token : "string.emphasis",
             regex : "([*]|[_](?=\\S))(.*?\\S[*_]*)(\\1)"
+        }, { // emoji :smile:
+            token : "string",
+            regex : /:[a-z0-9+\-_]+:/
         }, { //
             token : ["text", "url", "text"],
             regex : "(<)("+
@@ -194,7 +207,43 @@ function github_embed(tag, prefix) {
         }, {
             token : "support.function",
             regex : ".+"
-        } ]
+        } ],
+        
+        "equation": [{ // LaTeX equation
+            // A comment. Tex comments start with % and go to 
+            // the end of the line
+            token : "comment",
+            regex : "%.*$"
+        }, {
+            // A block
+            token : ["storage.type", "lparen", "variable.parameter", "rparen"],
+            regex : "(\\\\(?:begin|end))({)(\\w*)(})"
+        }, {
+            // A tex command e.g. \foo
+            token : "storage.type",
+            regex : "\\\\[a-zA-Z]+"
+        }, {
+            // Curly and square braces
+            token : "lparen",
+            regex : "[[({]"
+        }, {
+            // Curly and square braces
+            token : "rparen",
+            regex : "[\\])}]"
+        }, {
+            // superscript and subscript
+            token : "language",
+            regex : /[\^_]/
+        }, {
+            token : "constant.character.escape",
+            regex : "\\\\(?:[^a-zA-Z]|[a-zA-Z]+)"
+        }, {
+            token : "language",
+            regex : "\\${1,2}",
+            next  : "start"
+        }, {
+            defaultToken : "string"
+        }]
     });
 
     this.embedRules(JavaScriptHighlightRules, "jscode-", [{