Encodes & to &

TextformatterLatexMathML.module

@@ -65,6 +65,8 @@ class TextFormatterLatexMathML extends Textformatter {
 					// unescape esaped $-signs
 					$modifiedValue = str_replace('\$', '$',$modifiedValue);
 
+					$modifiedValue = str_replace('&','&',$modifiedValue);
+
 					// Save the node and its modified content for later replacement
            				 $nodesForReplacement[] = array(
 				                'node' => $node,
@@ -90,6 +92,7 @@ class TextFormatterLatexMathML extends Textformatter {
 	// Define a callback function to convert the matched formula to MathML
 	function convertToMathML($matches) {
 		$cache = wire('cache');
+	#	$cache->deleteAll();
 
 		// $matches[1] contains the matched substring within '$'
 		$formula = $matches[1];