Should call preg_split() first (bug fix).

See: wpsharks/comet-cache#169

quick-cache-pro/quick-cache-pro.inc.php

@@ -1486,7 +1486,7 @@ public function auto_purge_xml_sitemaps_cache()
 						$pattern = preg_quote($pattern, '/'); // Escape.
 						return preg_replace('/\\\\\*/', '.*?', $pattern); // Wildcards.
 
-					}, $this->options['cache_purge_xml_sitemap_patterns'])).')';
+					}, preg_split('/['."\r\n".']+/', $this->options['cache_purge_xml_sitemap_patterns'], NULL, PREG_SPLIT_NO_EMPTY))).')';
 				$cache_path_no_scheme_quv_ext = $this->url_to_cache_path(home_url('/'), '', '', $this::CACHE_PATH_NO_SCHEME | $this::CACHE_PATH_NO_PATH_INDEX | $this::CACHE_PATH_NO_QUV | $this::CACHE_PATH_NO_EXT);
 				$regex                        = '/^'.preg_quote($cache_dir, '/'). // Consider all schemes; all path paginations; and all possible variations.
 				                                '\/[^\/]+\/'.preg_quote($cache_path_no_scheme_quv_ext, '/').