use double hyphen for validation check in custom command

whatwg · Aug 5, 2024 · c949ff4 · c949ff4
1 parent 0ad30b5
commit c949ff4
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/source b/source
@@ -86045,8 +86045,8 @@ dictionary <dfn dictionary>DragEventInit</dfn> : <span>MouseEventInit</span> {
      <td>Opens the targeted <code>dialog</code> element as modal.
   </table>
 
-  <p>A <dfn>valid custom command</dfn> is a string that contains any character whose code point
-  is U+002D.</p>
+  <p>A <dfn>valid custom command</dfn> is a string whose first two code points are the U+002D
+  HYPHEN-MINUS character.</p>
 
   <span data-x="concept-element-dom">DOM interface</span>:
   <pre><code class="idl">interface mixin <dfn interface>InvokerElement</dfn> {