Autolinker: Don't process all grammars on load, process each one in b…

…efore-highlight. Should fix #760

plugins/autolinker/prism-autolinker.js

@@ -14,19 +14,21 @@ var url = /\b([a-z]{3,7}:\/\/|tel:)[\w\-+%~/.:#=?&]+/,
 	// Tokens that may contain URLs and emails
     candidates = ['comment', 'url', 'attr-value', 'string'];
 
-for (var language in Prism.languages) {
-	var tokens = Prism.languages[language];
-
-	Prism.languages.DFS(tokens, function (key, def, type) {
+Prism.hooks.add('before-highlight', function(env) {
+	// Abort if grammar has already been processed
+	if (!env.grammar || env.grammar['url-link']) {
+		return;
+	}
+	Prism.languages.DFS(env.grammar, function (key, def, type) {
 		if (candidates.indexOf(type) > -1 && Prism.util.type(def) !== 'Array') {
 			if (!def.pattern) {
 				def = this[key] = {
 					pattern: def
 				};
 			}
-			
+
 			def.inside = def.inside || {};
-			
+
 			if (type == 'comment') {
 				def.inside['md-link'] = linkMd;
 			}
@@ -36,14 +38,13 @@ for (var language in Prism.languages) {
 			else {
 				def.inside['url-link'] = url;
 			}
-			
+
 			def.inside['email-link'] = email;
 		}
 	});
-
-	tokens['url-link'] = url;
-	tokens['email-link'] = email;
-}
+	env.grammar['url-link'] = url;
+	env.grammar['email-link'] = email;
+});
 
 Prism.hooks.add('wrap', function(env) {
 	if (/-link$/.test(env.type)) {
@@ -66,4 +67,4 @@ Prism.hooks.add('wrap', function(env) {
 	}
 });
 
-})();
+})();