From 4841830d22759748b88e32870ef452cbe31d03cd Mon Sep 17 00:00:00 2001
From: Tomasz Rychtyk <tomek@rychtyk.pl>
Date: Thu, 12 Sep 2013 17:17:47 +0100
Subject: [PATCH] Fixed problem with @keyframes syntax

---
 lessc.inc.php | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/lessc.inc.php b/lessc.inc.php
index f396e8f1..ccc382b1 100644
--- a/lessc.inc.php
+++ b/lessc.inc.php
@@ -411,8 +411,24 @@ protected function findClosestSelectors() {
 	// multiply $selectors against the nearest selectors in env
 	protected function multiplySelectors($selectors) {
 		// find parent selectors
-
-		$parentSelectors = $this->findClosestSelectors();
+                
+                $parentSelectors = null;
+                $isReal = true;
+            
+                foreach($selectors as $sel) {
+                    // if a selector begins with a digit it means it's not a real selector
+                    // it's most likely a part of an @keyframes expression 
+                    // so it must not be prepended with parent selectors
+                    if(preg_match('/^[0-9]+/', $sel)) {
+                        $isReal = false;
+                        break;
+                    }
+                }
+                
+                if($isReal) {
+                    $parentSelectors = $this->findClosestSelectors();
+                }
+                
 		if (is_null($parentSelectors)) {
 			// kill parent reference in top level selector
 			foreach ($selectors as &$s) {