Allow multiline javascript expressions, fixes #885

lib/less/parser.js

@@ -284,7 +284,7 @@ less.Parser = function Parser(env) {
                 var j = 0,
                     skip = /(?:@\{[\w-]+\}|[^"'`\{\}\/\(\)\\])+/g,
                     comment = /\/\*(?:[^*]|\*+[^\/*])*\*+\/|\/\/.*/g,
-                    string = /"((?:[^"\\\r\n]|\\.)*)"|'((?:[^'\\\r\n]|\\.)*)'|`((?:[^`\\\r\n]|\\.)*)`/g,
+                    string = /"((?:[^"\\\r\n]|\\.)*)"|'((?:[^'\\\r\n]|\\.)*)'|`((?:[^`]|\\.)*)`/g,
                     level = 0,
                     match,
                     chunk = chunks[0],

test/css/javascript.css

@@ -5,6 +5,7 @@
   js: 1, 2, 3;
   title: "string";
   ternary: true;
+  multiline: 2;
 }
 .scope {
   var: 42;

test/less/javascript.less

@@ -5,6 +5,8 @@
     js: `[1, 2, 3]`;
     title: `typeof process.title`;
     ternary: `(1 + 1 == 2 ? true : false)`;
+    multiline: `(function(){var x = 1 + 1;
+           return x})()`;
 }
 .scope {
     @foo: 42;