Misc fixes

src/Editor/MessageBox.php

@@ -53,13 +53,15 @@ class MessageBox
         
         [$w,$h] = $this->terminal->getSize();
         if ($height == 0) {
-            $height = min($h - 5, count($wrapped) + 4);
+            $height = min($h - $top - 2, count($wrapped) + 4);
         }
+        // again? oh well..
+        $height = min($height, $h - $top - 2);
         if ($left == 0) {
             $left = round(($w - $width) / 2);
         }
         if ($top == 0) {
-            $top = round(($h - $height) / 2);
+            $top = (int)round(($h - $height) / 2);
         }
         
         $maxScroll = (count($wrapped) > $height) ? count($wrapped) - $height + 4 : 0;
@@ -127,6 +129,7 @@ class MessageBox
      * @return void
      */
     private function redraw(int $left, int $top, int $width, int $height, array $wrapped, string $title, int $maxScroll) {
+
         $visibleItems = $height - 4;
 
         // calculate scrollbar thumb positions
@@ -150,6 +153,8 @@ class MessageBox
             ->writeAt($left, $top + $height - 1, self::U_CORNER_BOTTOMLEFT.str_repeat(self::U_EDGE_HORIZONTAL,$width - 2).self::U_CORNER_BOTTOMRIGHT)
             ;
         for ($n = 0; $n < $visibleItems; $n++) {
+            $pre = '';
+            $post = '';
             if (isset($wrapped[$n+$this->scroll])) {
                 $line = $wrapped[$n+$this->scroll]??null;
                 if (str_starts_with($line, "# ")) {