From ac2ea800ce267b9ed3da5f743085f0afe8460473 Mon Sep 17 00:00:00 2001
From: AntonioLucibello <65395340+AntonioLucibello@users.noreply.github.com>
Date: Mon, 2 May 2022 16:45:20 +0200
Subject: [PATCH] Add undo checkpoint command (#2115)
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* added undo checkpoint command

* changed add_undo_checkpoint to commit_undo_checkpoint

* mapped commit_undo_checkpoint to Alt-u

* Update default.rs

Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>
---
 helix-term/src/commands.rs       | 6 ++++++
 helix-term/src/keymap/default.rs | 1 +
 2 files changed, 7 insertions(+)

diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index 54dcc98f..e2d10d21 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -318,6 +318,7 @@ impl MappableCommand {
         redo, "Redo change",
         earlier, "Move backward in history",
         later, "Move forward in history",
+        commit_undo_checkpoint, "Commit changes to a new checkpoint",
         yank, "Yank selection",
         yank_joined_to_clipboard, "Join and yank selections to clipboard",
         yank_main_selection_to_clipboard, "Yank main selection to clipboard",
@@ -3001,6 +3002,11 @@ fn later(cx: &mut Context) {
     }
 }
 
+fn commit_undo_checkpoint(cx: &mut Context) {
+    let (view, doc) = current!(cx.editor);
+    doc.append_changes_to_history(view.id);
+}
+
 // Yank / Paste
 
 fn yank(cx: &mut Context) {
diff --git a/helix-term/src/keymap/default.rs b/helix-term/src/keymap/default.rs
index db24e97a..a8ff8be9 100644
--- a/helix-term/src/keymap/default.rs
+++ b/helix-term/src/keymap/default.rs
@@ -326,6 +326,7 @@ pub fn default() -> HashMap<Mode, Keymap> {
         "C-w" => delete_word_backward,
         "A-backspace" => delete_word_backward,
         "A-d" => delete_word_forward,
+        "C-s" => commit_undo_checkpoint,
 
         "left" => move_char_left,
         "C-b" => move_char_left,