From 55dd392fe4507c7654349f54f5aef68ba8412007 Mon Sep 17 00:00:00 2001
From: Jeremy Ruston <jeremy@osmosoft.com>
Date: Tue, 5 Jun 2012 14:43:31 +0100
Subject: [PATCH] Added run parser for emphasis like bold and italics

---
 .../newwikitextparser/rules/emphasis.js       | 64 +++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 core/modules/parsers/newwikitextparser/rules/emphasis.js

diff --git a/core/modules/parsers/newwikitextparser/rules/emphasis.js b/core/modules/parsers/newwikitextparser/rules/emphasis.js
new file mode 100644
index 000000000..c62dc41d9
--- /dev/null
+++ b/core/modules/parsers/newwikitextparser/rules/emphasis.js
@@ -0,0 +1,64 @@
+/*\
+title: $:/core/modules/parsers/newwikitextparser/rules/emphasis.js
+type: application/javascript
+module-type: wikitextrule
+
+Wiki text run rule for emphasis
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+exports.name = "emphasis";
+
+exports.runParser = true;
+
+exports.regExpString = "''|\/\/|__|\\^\\^|~~|--(?!\\s|$)";
+
+exports.parse = function(match,isBlock) {
+	this.pos = match.index + match[0].length;
+	var el,regExp;
+	switch(match[0]) {
+		case "''": // Bold
+			el = "strong";
+			regExp = /('')|(\r?\n)/mg;
+			break;
+		case "//": // Italics
+			el = "em";
+			regExp = /(\/\/)|(\r?\n)/mg;
+			break;
+		case "__": // Underline
+			el = "u";
+			regExp = /(__)|(\r?\n)/mg;
+			break;
+		case "^^":
+			el = "sup";
+			regExp = /(\^\^)|(\r?\n)/mg;
+			break;
+		case "~~":
+			el = "sub";
+			regExp = /(~~)|(\r?\n)/mg;
+			break;
+		case "--":
+			el = "strike";
+			regExp = /(--)|(\r?\n)/mg;
+			break;
+	}
+	// Parse the run up to the terminator
+	var tree = this.parseRun(regExp,{leaveTerminator: true});
+	// Check for the terminator
+	regExp.lastIndex = this.pos;
+	match = regExp.exec(this.source);
+	if(match && match.index === this.pos) {
+		// Only consume the terminator if it isn't a line break
+		if(match[1]) {
+			this.pos = match.index + match[0].length;
+		}
+	}
+	return [$tw.Tree.Element(el,{},tree)];
+};
+
+})();