<?php
/** System Events Selected: OnParseDocument */

/** Strip out $source in favor of a placeholder */
if (!function_exists('replace_pre_tags')) {
function replace_pre_tags($source) {
	if (is_array($source)) $source = $source[0];
	static $counter = 1;
	static $in = array('[', ']');
	static $out = array('[', ']');

	$source = str_replace($in, $out, $source);
	
	$ph = 'pre_content_'.$counter++;
	$modx->setPlaceholder($ph, $source);
	return '[+'.$ph.'+]';
}

// Run the replacements
preg_replace_callback('~\<pre>.*?\</pre>~', 'replace_pre_tags', $modx->documentOutput);
?>

	function evalSnippets($documentSource) {
	
	//added by mmd for not parsing <pre> tags part 1
		preg_match_all('~\<pre>(.*?)\</pre>~', $documentSource, $fragments); //looking for <pre> tags, store them in $fragments
		if ($fragmentsCount=count($fragments[1])) {
				for($i=0; $i<$fragmentsCount; $i++) {
					$fragments_replace[1][$i] = str_replace('[[','[*#[',$fragments[1][$i]); //replace snippet calls within
					$fragments_replace[1][$i] = str_replace(']]',']*#]',$fragments[1][$i]); //<pre> tags with other chars
					$documentSource = str_replace($fragments[1][$i],$fragments_replace[1][$i],$documentSource);
				}
		}
	//end part 1
	
		preg_match_all('~\[\[(.*?)\]\]~', $documentSource, $matches);

		$etomite = &$this;

...
		**SNIP**
...
		
                //added by mmd for not parsing pre tags part 2
		$documentSource = str_replace('[*#[','[[',$documentSource); //replace snippet placeholders 
		$documentSource = str_replace(']*#]',']]',$documentSource); //with original
               // end part 2

		return $documentSource;
	}