From 534860dffe334bbccd8b88af6047ead350cfaf82 Mon Sep 17 00:00:00 2001
From: Michael M Slusarz <slusarz@curecanti.org>
Date: Tue, 19 Mar 2013 01:10:28 -0600
Subject: [PATCH] Fix parsing negative numeric arguments without a leading
 digit

E.g. this:
   -.5em

Was being parsed/output as
   - 0.5em
---
 lib/Sabberworm/CSS/Parser.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/Sabberworm/CSS/Parser.php b/lib/Sabberworm/CSS/Parser.php
index 5a55ba2f7..853529261 100644
--- a/lib/Sabberworm/CSS/Parser.php
+++ b/lib/Sabberworm/CSS/Parser.php
@@ -350,7 +350,10 @@ private static function listDelimiterForRule($sRule) {
 	private function parsePrimitiveValue() {
 		$oValue = null;
 		$this->consumeWhiteSpace();
-		if (is_numeric($this->peek()) || (($this->comes('-') || $this->comes('.')) && is_numeric($this->peek(1, 1)))) {
+		if (is_numeric($this->peek()) ||
+		    (($this->comes('-') || $this->comes('.')) &&
+		     (($peek = $this->peek(1, 1)) || true) &&
+		     (($peek == '.') || is_numeric($peek)))) {
 			$oValue = $this->parseNumericValue();
 		} else if ($this->comes('#') || $this->comes('rgb') || $this->comes('hsl')) {
 			$oValue = $this->parseColorValue();