Fix for stripping leading/trailing whitespace from partial names,

per http://github.com/janl/mustache.js/issues/issue/34/#comment_244396

Mustache.php

@@ -144,7 +144,7 @@ class Mustache {
 	protected function _renderSection($template, &$context) {
 		$otag  = $this->_prepareRegEx($this->_otag);
 		$ctag  = $this->_prepareRegEx($this->_ctag);
-		$regex = '/' . $otag . '(\\^|\\#)(.+?)' . $ctag . '\\s*([\\s\\S]+?)' . $otag . '\\/\\2' . $ctag . '\\s*/m';
+		$regex = '/' . $otag . '(\\^|\\#)\\s*(.+?)\\s*' . $ctag . '\\s*([\\s\\S]+?)' . $otag . '\\/\\s*\\2\\s*' . $ctag . '\\s*/m';
 
 		$matches = array();
 		while (preg_match($regex, $template, $matches, PREG_OFFSET_CAPTURE)) {

examples/whitespace/Whitespace.php

@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * Whitespace test for tag names.
+ *
+ * Per http://github.com/janl/mustache.js/issues/issue/34/#comment_244396
+ * tags should strip leading and trailing whitespace in key names.
+ *
+ * `{{> tag }}` and `{{> tag}}` and `{{>tag}}` should all be equivalent.
+ *
+ * @extends Mustache
+ */
+class Whitespace extends Mustache {
+	public $foo = 'alpha';
+
+	public $bar = 'beta';
+
+	public function baz() {
+		return 'gamma';
+	}
+
+	public function qux() {
+		return array(
+			array('key with space' => 'A'),
+			array('key with space' => 'B'),
+			array('key with space' => 'C'),
+			array('key with space' => 'D'),
+			array('key with space' => 'E'),
+			array('key with space' => 'F'),
+			array('key with space' => 'G'),
+		);
+	}
+
+	protected $_partials = array(
+		'alphabet' => " * {{.}}\n",
+	);
+}

examples/whitespace/whitespace.mustache

@@ -0,0 +1,10 @@
+{{^ inverted section test }}
+These are some things:
+{{/inverted section test	}}
+* {{  foo  }}
+* {{ bar}}
+* {{    baz	}}
+{{#  qux		 }}
+* {{ key with space }}
+{{/ qux		}}
+{{#qux}}.{{/qux}}

examples/whitespace/whitespace.txt

@@ -0,0 +1,12 @@
+These are some things:
+* alpha
+* beta
+* gamma
+* A
+* B
+* C
+* D
+* E
+* F
+* G
+.......