From a034a88eb0b5ffb51a836ffe7b70b251401d45ff Mon Sep 17 00:00:00 2001
From: "Joseph T. Lyons" <JosephTLyons@gmail.com>
Date: Tue, 23 Dec 2025 03:07:48 -0500
Subject: [PATCH] Add support for automatic Markdown task list continuation
 when using uppercase X (#45561)

Release Notes:

- Added support for automatic Markdown task list continuation when using
uppercase X
---
 crates/editor/src/editor_tests.rs         | 11 +++++++++++
 crates/languages/src/markdown/config.toml |  2 +-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/crates/editor/src/editor_tests.rs b/crates/editor/src/editor_tests.rs
index 6d53c59d90..dc990d69f2 100644
--- a/crates/editor/src/editor_tests.rs
+++ b/crates/editor/src/editor_tests.rs
@@ -29602,6 +29602,17 @@ async fn test_newline_task_list_continuation(cx: &mut TestAppContext) {
         - [ ] ˇ
     "});
 
+    // Case 2.1: Works with uppercase checked marker too
+    cx.set_state(indoc! {"
+        - [X] completed taskˇ
+    "});
+    cx.update_editor(|e, window, cx| e.newline(&Newline, window, cx));
+    cx.wait_for_autoindent_applied().await;
+    cx.assert_editor_state(indoc! {"
+        - [X] completed task
+        - [ ] ˇ
+    "});
+
     // Case 3: Cursor position doesn't matter - content after marker is what counts
     cx.set_state(indoc! {"
         - [ ] taˇsk
diff --git a/crates/languages/src/markdown/config.toml b/crates/languages/src/markdown/config.toml
index 423a4c008f..10b1e49757 100644
--- a/crates/languages/src/markdown/config.toml
+++ b/crates/languages/src/markdown/config.toml
@@ -22,7 +22,7 @@ rewrap_prefixes = [
 ]
 unordered_list = ["- ", "* ", "+ "]
 ordered_list = [{ pattern = "(\\d+)\\. ", format = "{1}. " }]
-task_list = { prefixes = ["- [ ] ", "- [x] "], continuation = "- [ ] " }
+task_list = { prefixes = ["- [ ] ", "- [x] ", "- [X] "], continuation = "- [ ] " }
 
 auto_indent_on_paste = false
 auto_indent_using_last_non_empty_line = false