diff --git a/design.inc.php b/design.inc.php
index b7b50a45..332f14ad 100644
--- a/design.inc.php
+++ b/design.inc.php
@@ -9,7 +9,7 @@ function page_header($title, $error = "", $breadcrumb = array(), $title2 = "") {
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta http-equiv="Content-Script-Type" content="text/javascript" />
 <meta name="robots" content="noindex" />
-<title><?php echo $title . (strlen($title2) ? ": " . htmlspecialchars($title2) : "") . " - " . lang('phpMinAdmin') . " 1.9.1-dev"; ?></title>
+<title><?php echo $title . (strlen($title2) ? ": " . htmlspecialchars($title2) : "") . " - " . lang('phpMinAdmin') . " 1.9.2-dev"; ?></title>
 <link rel="shortcut icon" type="image/x-icon" href="favicon.ico" />
 <link rel="stylesheet" type="text/css" href="default.css" /><?php // Ondrej Valka, http://valka.info ?>
 </head>
diff --git a/editing.inc.php b/editing.inc.php
index f3dd183c..a8cdb824 100644
--- a/editing.inc.php
+++ b/editing.inc.php
@@ -22,8 +22,13 @@ function input($name, $field, $value) {
 		$first = $field["null"] + isset($_GET["select"]);
 		$onchange = ($first ? ' onchange="var f = this.form[\'function[' . addcslashes($name, "\r\n'\\") . ']\']; if (' . $first . ' > f.selectedIndex) f.selectedIndex = ' . $first . ';"' : '');
 		$options = array("");
-		if (!isset($_GET["default"]) && preg_match('~char|date|time~', $field["type"])) {
-			$options = (preg_match('~char~', $field["type"]) ? array("", "md5", "sha1", "password", "uuid") : array("", "now"));
+		if (!isset($_GET["default"])) {
+			if (preg_match('~char|date|time~', $field["type"])) {
+				$options = (preg_match('~char~', $field["type"]) ? array("", "md5", "sha1", "password", "uuid") : array("", "now"));
+			}
+			if (!isset($_GET["clone"]) && preg_match('~int|float|double|decimal~', $field["type"])) {
+				$options = array("", "+", "-");
+			}
 		}
 		if ($field["null"]) {
 			array_unshift($options, "NULL");
@@ -51,10 +56,11 @@ function input($name, $field, $value) {
 function process_input($name, $field) {
 	global $mysql;
 	$idf = bracket_escape($name);
+	$function = $_POST["function"][$idf];
 	$value = $_POST["fields"][$idf];
-	if ($field["type"] == "enum" ? $value == -1 : $_POST["function"][$idf] == "orig") {
+	if ($field["type"] == "enum" ? $value == -1 : $function == "orig") {
 		return false;
-	} elseif ($field["type"] == "enum" || $field["auto_increment"] ? !strlen($value) : $_POST["function"][$idf] == "NULL") {
+	} elseif ($field["type"] == "enum" || $field["auto_increment"] ? !strlen($value) : $function == "NULL") {
 		return "NULL";
 	} elseif ($field["type"] == "enum") {
 		return (isset($_GET["default"]) ? "'" . $mysql->escape_string($value) . "'" : intval($value));
@@ -68,10 +74,12 @@ function process_input($name, $field) {
 		return "_binary'" . (is_string($file) ? $mysql->escape_string($file) : "") . "'";
 	} elseif ($field["type"] == "timestamp" && $value == "CURRENT_TIMESTAMP") {
 		return $value;
-	} elseif (preg_match('~^(now|uuid)$~', $_POST["function"][$idf])) {
-		return $_POST["function"][$idf] . "()";
-	} elseif (preg_match('~^(md5|sha1|password)$~', $_POST["function"][$idf])) {
-		return $_POST["function"][$idf] . "('" . $mysql->escape_string($value) . "')";
+	} elseif (preg_match('~^(now|uuid)$~', $function)) {
+		return "$function()";
+	} elseif (preg_match('~^(\\+|-)$~', $function)) {
+		return idf_escape($name) . " $function '" . $mysql->escape_string($value) . "'";
+	} elseif (preg_match('~^(md5|sha1|password)$~', $function)) {
+		return "$function('" . $mysql->escape_string($value) . "')";
 	} else {
 		return "'" . $mysql->escape_string($value) . "'";
 	}