<?php
function ___wejns_wp_whitespace_fix($input) {
	$allowed = false;
	$found = false;
	foreach (headers_list() as $header) {
		if (preg_match("/^content-type:\\s+(text\\/|application\\/((xhtml|atom|rss)\\+xml|xml))/i", $header)) {
			$allowed = true;
		}

		if (preg_match("/^content-type:\\s+/i", $header)) {
			$found = true;
		}
	}

	if ($allowed || !$found) {
		return preg_replace("/\\A\\s*/m", "", $input);
	} else {
		return $input;
	}
}
ob_start("___wejns_wp_whitespace_fix");
?>