Only modify the behavior of Size::render for numbers that are going to be printed in scientific notation

Author: raxbg

lib/Sabberworm/CSS/Value/Size.php

@@ -116,7 +116,7 @@ public function __toString() {
 	public function render(\Sabberworm\CSS\OutputFormat $oOutputFormat) {
 		$l = localeconv();
 		$sPoint = preg_quote($l['decimal_point'], '/');
-		$sSize = $this->fSize != 0 ? preg_replace("/$sPoint?0+$/", "", sprintf("%f", $this->fSize)) : 0;
+		$sSize = preg_match("/[\d\.]+e[+-]?\d+/i", (string)$this->fSize) ? preg_replace("/$sPoint?0+$/", "", sprintf("%f", $this->fSize)) : $this->fSize;
 		return preg_replace(array("/$sPoint/", "/^(-?)0\./"), array('.', '$1.'), $sSize) . ($this->sUnit === null ? '' : $this->sUnit);
 	}
 

tests/Sabberworm/CSS/ParserTest.php

@@ -704,4 +704,10 @@ function testMicrosoftFilterParsing() {
 		$sExpected = ".test {filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=\"#80000000\",endColorstr=\"#00000000\",GradientType=1);}";
 		$this->assertSame($sExpected, $oDoc->render());
 	}
+
+	function testLargeSizeValuesInFile() {
+		$oDoc = $this->parsedStructureForFile('large-z-index', Settings::create()->withMultibyteSupport(false));
+		$sExpected = '.overlay {z-index: 10000000000000000000000;}';
+		$this->assertSame($sExpected, $oDoc->render());
+	}
 }

tests/files/large-z-index.css

@@ -0,0 +1,3 @@
+.overlay {
+  z-index: 9999999999999999999999;
+}