Allow space as function argument delimiter

Closes MyIntervals#36 as fixed

Author: sabberworm

CSSParser.php

@@ -109,7 +109,7 @@ private function parseIdentifier($bAllowFunctions = true) {
 		}
 		if($bAllowFunctions && $this->comes('(')) {
 			$this->consume('(');
-			$sResult = new CSSFunction($sResult, $this->parseValue(array('=', ',')));
+			$sResult = new CSSFunction($sResult, $this->parseValue(array('=', ',', ' ')));
 			$this->consume(')');
 		}
 		return $sResult;

tests/CSSParserTests.php

@@ -239,6 +239,12 @@ function testCreateShorthands() {
     $sExpected = 'body {background: rgb(255,255,255) url("foobar.png") repeat-y;margin: 2px 5px 4px 3px;border: 2px dotted rgb(153,153,153);font: bold 2em Helvetica,Arial,sans-serif;}'."\n";
 		$this->assertSame($sExpected, $oDoc->__toString());
   }
+	
+	function testPrefixedGradient() {
+		$oDoc = $this->parsedStructureForFile('webkit');
+		$sExpected = '.test {background: -webkit-linear-gradient(top right,white,black);}'."\n";
+		$this->assertSame($sExpected, $oDoc->__toString());
+	}
 
 	function testListValueRemoval() {
 		$oDoc = $this->parsedStructureForFile('atrules');

tests/files/webkit.css

@@ -0,0 +1 @@
+.test { background:-webkit-linear-gradient(top right, white, black)}