better regex for email local-part

Author: afeld

src/matcherRegexSource.js

@@ -21,7 +21,7 @@
 Autolinker.matcherRegex = (function() {
 	var twitterRegex = /(^|\s)@(\w{1,15})/,                 // For matching a twitter handle. Ex: @gregory_jacobs
 
-	    emailRegex = /(?:[\-;:&=\+\$,\w]+@)/,               // something@ for email addresses
+	    emailRegex = /(?:[A-Za-z0-9!#$%&'*+\/=?\^_`{|}~\-]+(\.[A-Za-z0-9!#$%&'*+\/=?\^_`{|}~\-]+)*@)/,  // something@ for email addresses (a.k.a. local-part), taken from https://github.com/tolsen/email-validator/blob/9f571290d1a7c2d3db35b5da86b8a310f245f48f/lib/email_validator.rb#L35
 
 	    protocolRegex = /(?:[A-Za-z]{3,9}:(?:\/\/)?)/,      // match protocol, allow in format http:// or mailto:
 	    wwwRegex = /(?:www\.)/,                             // starting with 'www.'

tests/AutolinkerTest.js

@@ -170,6 +170,11 @@ Ext.test.Session.addSuite( new Ext.test.Suite( {
 				var result = Autolinker.link( "Joe's email is [email protected]" );
 				Y.Assert.areSame( 'Joe\'s email is <a href="mailto:[email protected]" target="_blank">[email protected]</a>', result );
 			},
+
+			"link() should automatically link email addresses with a period in the 'local part'" : function() {
+				var result = Autolinker.link( "Joe's email is [email protected]" );
+				Y.Assert.areSame( 'Joe\'s email is <a href="mailto:[email protected]" target="_blank">[email protected]</a>', result );
+			},
 
 			"link() should NOT automatically link any old word with an @ character in it" : function() {
 				var result = Autolinker.link( "Hi there@stuff" );