--- a/mgtool.php	Thu Apr 09 10:13:45 2020 +0300
+++ b/mgtool.php	Thu Apr 09 11:55:08 2020 +0300
@@ -1337,6 +1337,93 @@
 }
 
 
+function mgGetDValStr($key, $mdata, $val, $format, $multi)
+{
+  $vfmt = "%s";
+
+  switch ($mdata[0])
+  {
+    case MG_STR_ARRAY:
+      if ($val === FALSE)
+        $val = [];
+      else
+      if (is_array($val) || is_string($val))
+      {
+        $vfmt = "\"%s\"";
+        if (is_string($val))
+          $val = [ $val ];
+      }
+      else
+        $val = "ERROR1";
+      break;
+
+    case MG_STR:
+    case MG_STR_LC:
+      if (is_string($val))
+      {
+        $vfmt = "\"%s\"";
+        if ($mdata[0] == MG_STR_LC)
+          $val = strtolower($val);
+      }
+      else
+        $val = "ERROR2";
+      break;
+
+    case MG_BOOL:
+      $val = $val ? "yes" : "no";
+      break;
+
+    case MG_FLAGS:
+      {
+        $mstr = [];
+        foreach ($mdata[2] as $vkey => $vval)
+        {
+          if ($val & $vval)
+            $mstr[] = $vkey;
+        }
+
+        $val = "\"".implode(" | ", $mstr)."\"";
+      }
+      break;
+
+    case MG_INT:
+      $val = (string) $val;
+      break;
+
+    default:
+      $val = "ERROR";
+  }
+
+  if (!is_array($val))
+  {
+    if ($val === NULL || $val === FALSE)
+      $val = [];
+    else
+      $val = [ $val ];
+  }
+
+  $res = (count($val) == 0) ? "# " : "";
+
+  if ($multi)
+  {
+    if (count($val) > 0)
+    {
+      foreach ($val as $vv)
+        $res .= sprintf($format, $key, sprintf($vfmt, $vv));
+    }
+    else
+      $res .= sprintf($format, $key, "");
+  }
+  else
+  {
+    $res .= sprintf($format, $key,
+        implode(", ", array_map(function($vv) use ($vfmt) { return sprintf($vfmt, $vv); }, $val)));
+  }
+
+  return $res;
+}
+
+
 function mgShowCopyright()
 {
   global $mgProgVersion, $mgProgCopyright,
@@ -1545,22 +1632,19 @@
 
   case "config":
   case "dump":
+    foreach ($mgDefaults as $ckey => $cdata)
+    {
+      $sval = mgGetSetting($ckey);
 
-    foreach ($mgDefaults as $key => $dval)
-    {
-      $sval = mgGetSetting($key);
       if ($cmd == "dump")
       {
-        printf("%-20s = %s\n",
-          $key,
-          mgGetDValStr($dval, $sval));
+        echo mgGetDValStr($ckey, $cdata, $sval, "%1\$-15s = %2\$s\n", FALSE);
       }
       else
       {
-        printf("%-20s = %s%s\n",
-          $key,
-          mgGetDValStr($dval, $sval),
-          ($dval[1] !== NULL && $sval !== $dval[1]) ? " (default: ".mgGetDValStr($dval, $dval[1]).")" : "");
+        echo mgGetDValStr($ckey, $cdata, $sval, "%1\$-15s = %2\$s", TRUE).
+            (($cdata[1] !== NULL && $sval !== $cdata[1]) ?
+            " (default: ".mgGetDValStr($ckey, $cdata, $cdata[1], "%2\$s", FALSE).")" : "")."\n";
       }
     }
     break;