Index: library/Zend/Filter/StringTrim.php
===================================================================
--- library/Zend/Filter/StringTrim.php	(revision 23347)
+++ library/Zend/Filter/StringTrim.php	(working copy)
@@ -48,11 +48,11 @@
      * @param  string|array|Zend_Config $charList
      * @return void
      */
-    public function __construct($charList = null)
+    public function __construct($options = null)
     {
-        if ($charList instanceof Zend_Config) {
-            $charList = $charList->toArray();
-        } else if (!is_array($charList)) {
+        if ($options instanceof Zend_Config) {
+            $options = $options->toArray();
+        } else if (!is_array($options)) {
             $options          = func_get_args();
             $temp['charlist'] = array_shift($options);
             $options          = $temp;
Index: tests/Zend/Filter/StringTrimTest.php
===================================================================
--- tests/Zend/Filter/StringTrimTest.php	(revision 23347)
+++ tests/Zend/Filter/StringTrimTest.php	(working copy)
@@ -120,4 +120,19 @@
     public function testZF7902()
     {
         $this->assertEquals('/', $this->_filter->filter('/'));
-    }}
+    }
+
+    /**
+     * @group ZF-10691
+     */
+    public function testSetParamCharListToConstructor()
+    {
+        require_once 'Zend/Config.php';
+        $config = new Zend_Config(array('charlist' => '&'));
+        $filter = new Zend_Filter_StringTrim($config);
+        $this->assertEquals('&', $filter->getCharList());
+
+        $filter = new Zend_Filter_StringTrim('&');
+        $this->assertEquals('&', $filter->getCharList());
+    }
+}