Fix missing ^, causing parse error. Fixes #2154

lib/less/parser.js

@@ -1413,7 +1413,7 @@ less.Parser = function Parser(env) {
 
                 if (c === '/') {
                     save();
-                    var slashedCombinator = $re(/\/[a-z]+\//i);
+                    var slashedCombinator = $re(/^\/[a-z]+\//i);
                     if (slashedCombinator) {
                         forget();
                         return new(tree.Combinator)(slashedCombinator);

test/css/comments.css

@@ -55,6 +55,9 @@
 .test {
   color: 1px;
 }
+.sr-only-focusable {
+  clip: auto;
+}
 #last {
   color: #0000ff;
 }

test/less/comments.less

@@ -77,6 +77,13 @@
 }
 .mixin_def_with_colors();
 
+// .s when
+//R/2
+
+.sr-only-focusable {
+  clip: auto;
+}
+
 #last { color: blue }
 //