escape regex-meaningful characters while highlighting

Author: snyder13

src/jquery.tokeninput.js

@@ -697,13 +697,18 @@ $.TokenList = function (input, url_or_data, settings) {
         }
     }
 
+    var regexp_special_chars = new RegExp('[.\\\\+*?\\[\\^\\]$(){}=!<>|:\\-]', 'g');
+    function regexp_escape(term) {
+        return term.replace(regexp_special_chars, '\\$&');
+    }
+
     // Highlight the query part of the search term
     function highlight_term(value, term) {
-        return value.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + term + ")(?![^<>]*>)(?![^&;]+;)", "gi"), "<b>$1</b>");
+        return value.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + regexp_escape(term) + ")(?![^<>]*>)(?![^&;]+;)", "gi"), "<b>$1</b>");
     }
 
     function find_value_and_highlight_term(template, value, term) {
-        return template.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + value + ")(?![^<>]*>)(?![^&;]+;)", "g"), highlight_term(value, term));
+        return template.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + regexp_escape(value) + ")(?![^<>]*>)(?![^&;]+;)", "g"), highlight_term(value, term));
     }
 
     // Populate the results dropdown with some results