--- src/Plugin/WebformElementBase.php	2023-03-27 17:30:04.067928500 +0100
+++ src/Plugin/WebformElementBase.php	2023-03-27 17:38:59.712840100 +0100
@@ -1473,6 +1473,7 @@
       case 'semicolon':
       case 'comma':
       case 'space':
+       case 'pipe':
       case 'hr':
         $delimiters = [
           'hr' => '<hr class="webform-horizontal-rule" />',
@@ -1480,6 +1481,7 @@
           'semicolon' => '; ',
           'comma' => ', ',
           'space' => ' ',
+           'pipe' => '|',
         ];
         $delimiter = $delimiters[$format] ?? $format;
 
@@ -1541,6 +1543,7 @@
       case 'semicolon':
       case 'comma':
       case 'space':
+       case 'pipe':
       case 'hr':
         $delimiters = [
           'hr' => PHP_EOL . '---' . PHP_EOL,
@@ -1548,6 +1551,7 @@
           'semicolon' => '; ',
           'comma' => ', ',
           'space' => ' ',
+           'pipe' => '|',
         ];
         $delimiter = $delimiters[$format] ?? $format;
         return implode($delimiter, $items);
@@ -1811,6 +1815,7 @@
       'and' => $this->t('And'),
       'ol' => $this->t('Ordered list'),
       'ul' => $this->t('Unordered list'),
+       'pipe' => $this->t('Pipe'),
     ];
   }