Added LaTeX syntax highlighting in the editor

public/res/eventMgr.js

@@ -202,6 +202,7 @@ define([
                     _.each(previewContentsElt.children, function(elt) {
                         html += elt.innerHTML;
                     });
+                    html = html.replace(/^<div class="se-section-delimiter"><\/div>\n\n/gm, '');
                     onPreviewFinished(utils.trim(html));
                 });
             };

public/res/extensions/markdownSectionParser.js

@@ -25,9 +25,9 @@ define([
         }
         if(mathJax.config.enabled) {
             // Math delimiter has to follow 1 empty line to be considered as a section delimiter
-            regexp = '^[ \\t]*\\n[ \\t]*\\$\\$[\\s\\S]*\\$\\$|' + regexp; // $$ math delimiters
-            regexp = '^[ \\t]*\\n[ \\t]*\\\\\\\\\\[[\\s\\S]*\\\\\\\\\\]|' + regexp; // \\[ \\] math delimiters
-            regexp = '^[ \\t]*\\n[ \\t]*\\\\\\\\begin\\{[a-z]*\\*?\\}[\\s\\S]*\\\\\\\\end\\{[a-z]*\\*?\\}|' + regexp; // \\begin{...} \\end{...} math delimiters
+            regexp = '^[ \\t]*\\n[ \\t]*\\$\\$[\\s\\S]*?\\$\\$|' + regexp; // $$ math delimiters
+            regexp = '^[ \\t]*\\n[ \\t]*\\\\\\\\[[\\s\\S]*?\\\\\\\\]|' + regexp; // \\[ \\] math delimiters
+            regexp = '^[ \\t]*\\n[ \\t]*\\\\?\\\\begin\\{[a-z]*\\*?\\}[\\s\\S]*?\\\\end\\{[a-z]*\\*?\\}|' + regexp; // \\begin{...} \\end{...} math delimiters
         }
         regexp = new RegExp(regexp, 'gmi');
         

public/res/extensions/scrollLink.js

@@ -56,10 +56,10 @@ define([
         htmlSectionList = [];
         var htmlSectionOffset;
         var previewScrollTop = $previewElt.scrollTop();
-        $previewElt.find(".preview-content > .se-section-delimiter + *").each(function() {
+        $previewElt.find(".preview-content > .se-section-delimiter").each(function() {
             var $delimiterElt = $(this);
-            // Consider div scroll position and header element top margin
-            var newSectionOffset = $delimiterElt.position().top + previewScrollTop + pxToFloat($delimiterElt.css('margin-top'));
+            // Consider div scroll position
+            var newSectionOffset = $delimiterElt.position().top + previewScrollTop;
             if(htmlSectionOffset !== undefined) {
                 htmlSectionList.push({
                     startOffset: htmlSectionOffset,

public/res/libs/ace_mode_highlight_rules.js

@@ -33,6 +33,7 @@ define(function(require, exports, module) {
 
 var oop = require("ace/lib/oop");
 var TextHighlightRules = require("ace/mode/text_highlight_rules").TextHighlightRules;
+var LatexHighlightRules = require("ace/mode/latex_highlight_rules").LatexHighlightRules;
 
 var MarkdownHighlightRules = function() {
 
@@ -40,7 +41,18 @@ var MarkdownHighlightRules = function() {
     // regexps are ordered -> the first match is used
 
     this.$rules = {
-        "basic" : [{
+        "basic" : [{ // Math inline
+            token : ["constant.language.escape", "keyword", "constant.language.escape"],
+            regex : "(\\$)(.*)(\\$)"
+        }, { // Math block
+            token : "constant.language.escape",
+            regex : "\\$\\$|\\\\\\\\\\[|\\\\\\\\\\\\\\\\\\(",
+            next  : "mathblock"
+        }, { // LaTeX block
+            token : "keyword",
+            regex : "\\\\?\\\\begin\\{[a-z]*\\*?\\}",
+            next  : "latexblock"
+        }, {
             token : "constant.language.escape",
             regex : /\\[\\`*_{}\[\]()#+\-.!]/
         }, { // code span `
@@ -163,7 +175,42 @@ var MarkdownHighlightRules = function() {
         }, {
             token : "code_block",
             regex : ".+"
-        } ]
+        } ],
+
+        "mathblock" : [ {
+            token : "constant.language.escape",
+            regex : "\\$\\$|\\\\\\\\\\]|\\\\\\\\\\\\\\\\\\)",
+            next  : "basic"
+        }, {
+            include : "latex"
+        } ],
+
+        "latexblock" : [{
+            token : "keyword",
+            regex : "\\\\?\\\\end\\{[a-z]*\\*?\\}",
+            next  : "basic"
+        }, {
+            include : "latex"
+        }],
+        
+        "latex" : [{
+            // 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 : "[\\])}]"
+        }, {
+            // A comment. Tex comments start with % and go to 
+            // the end of the line
+            token : "comment",
+            regex : "%.*$"
+        }]
     };
 
     this.normalizeRules();

public/res/styles/main.less

@@ -999,6 +999,16 @@ ul,ol {
 		color: @primary-color-lightest;
 	}
 	
+	.ace_constant.ace_language {
+	    color: @primary-color-lightest;
+	}
+	
+	.ace_keyword {
+		color: @primary-color;
+		background-color: @code-bg;
+		font-weight: bold;
+	}
+	
 	.ace_strong {
 		font-weight: bold;
 	}