update regex

Author: epoberezkin

lib/compile/util.js

@@ -137,6 +137,8 @@ function varReplace(str, dataVar, expr) {
 }
 
 
+
+
 function schemaHasRules(schema, rules) {
   if (typeof schema == 'boolean') return !schema;
   for (var key in schema) if (rules[key]) return true;
@@ -215,7 +217,7 @@ function getData($data, lvl, paths) {
 
 function joinPaths (a, b) {
   if (a == '""') return b;
-  return (a + ' + ' + b).replace(/' \+ '/g, '');
+  return (a + ' + ' + b).replace(/([^\\])' \+ '/g, '$1');
 }