Accepts matches array from preg_replace_callback in wpautop() or a string.

Ensures that the contents of a `

...

` HTML block are not
converted into paragraphs or line breaks.

function clean_pre($matches) {
	_deprecated_function( __FUNCTION__, '3.4.0' );

	if ( is_array($matches) )
		$text = $matches[1] . $matches[2] . "

“;
else
$text = $matches;

$text = str_replace(array(‘
‘, ‘
‘, ‘
‘), array(”, ”, ”), $text);
$text = str_replace(‘

‘, “n”, $text);
$text = str_replace(‘

‘, ”, $text);

return $text;
}