From 465d6fe5143fbebaef025e5595e71ac4e13c40b4 Mon Sep 17 00:00:00 2001
From: Jacob Leksan <63938553+jmleksan@users.noreply.github.com>
Date: Fri, 24 Apr 2026 03:33:46 -0400
Subject: [PATCH] feat: enhance RichTextInput configuration to prevent
 duplicate extensions when rich text is enabled (#24009)

---
 src/lib/components/common/RichTextInput.svelte | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/lib/components/common/RichTextInput.svelte b/src/lib/components/common/RichTextInput.svelte
index 8c4006d280..99fa025055 100644
--- a/src/lib/components/common/RichTextInput.svelte
+++ b/src/lib/components/common/RichTextInput.svelte
@@ -737,6 +737,17 @@
 				StarterKit.configure({
 					link: link,
 					code: false, // Disabled in favor of FixedCode (see workaround above)
+					// When rich text is on, ListKit + CodeBlockLowlight provide these.
+					// Disable StarterKit's equivalents to avoid duplicate extension names.
+					...(richText
+						? {
+								codeBlock: false,
+								bulletList: false,
+								orderedList: false,
+								listItem: false,
+								listKeymap: false
+							}
+						: {}),
 					// When rich text is off, disable Strike from StarterKit so we can
 					// re-add it below without its Mod-Shift-s shortcut (which conflicts
 					// with the Toggle Sidebar shortcut). When rich text is on, the user