Don't overwrite configs when loading

inc/functions.php

@@ -9,32 +9,39 @@
 			require 'instance-config.php';
 		}
 		
-		$config['post_url']		= $config['root'] . $config['file_post'];
-		
-		$config['url_match'] = '/^' .
-			(preg_match($config['url_regex'], $config['root']) ? '' :
-				(@$_SERVER['HTTPS']?'https':'http') .
-				':\/\/'.$_SERVER['HTTP_HOST']) .
-				preg_quote($config['root'], '/') .
-			'(' .
-					str_replace('%s', '\w{1,8}', preg_quote($config['board_path'], '/')) .
-				'|' .
-					str_replace('%s', '\w{1,8}', preg_quote($config['board_path'], '/')) .
-					preg_quote($config['file_index'], '/') .
-				'|' .
-					str_replace('%s', '\w{1,8}', preg_quote($config['board_path'], '/')) .
-					str_replace('%d', '\d+', preg_quote($config['file_page'], '/')) .
-				'|' .
-					preg_quote($config['file_mod'], '/') .
-				'\?\/.+' .
-			')$/i';
-		
-		$config['dir']['static']	= $config['root'] . 'static/';
-		
-		$config['image_sticky']		= $config['dir']['static'] . 'sticky.gif';
-		$config['image_locked']		= $config['dir']['static'] . 'locked.gif';
-		$config['image_deleted']	= $config['dir']['static'] . 'deleted.png';
-		$config['image_zip']		= $config['dir']['static'] . 'zip.png';
+		if(!isset($config['post_url']))
+			$config['post_url']		= $config['root'] . $config['file_post'];
+		
+		if(!isset($config['url_match']))
+			$config['url_match'] = '/^' .
+				(preg_match($config['url_regex'], $config['root']) ? '' :
+					(@$_SERVER['HTTPS']?'https':'http') .
+					':\/\/'.$_SERVER['HTTP_HOST']) .
+					preg_quote($config['root'], '/') .
+				'(' .
+						str_replace('%s', '\w{1,8}', preg_quote($config['board_path'], '/')) .
+					'|' .
+						str_replace('%s', '\w{1,8}', preg_quote($config['board_path'], '/')) .
+						preg_quote($config['file_index'], '/') .
+					'|' .
+						str_replace('%s', '\w{1,8}', preg_quote($config['board_path'], '/')) .
+						str_replace('%d', '\d+', preg_quote($config['file_page'], '/')) .
+					'|' .
+						preg_quote($config['file_mod'], '/') .
+					'\?\/.+' .
+				')$/i';
+		
+		if(!isset($config['dir']['static']))
+			$config['dir']['static']	= $config['root'] . 'static/';
+		
+		if(!isset($config['image_sticky']))
+			$config['image_sticky']		= $config['dir']['static'] . 'sticky.gif';
+		if(!isset($config['image_locked']))
+			$config['image_locked']		= $config['dir']['static'] . 'locked.gif';
+		if(!isset($config['image_deleted']))
+			$config['image_deleted']	= $config['dir']['static'] . 'deleted.png';
+		if(!isset($config['image_zip']))
+			$config['image_zip']		= $config['dir']['static'] . 'zip.png';
 	}
 	
 	function sprintf3($str, $vars, $delim = '%') {