feat(tasks): mark task buffers as clean when task exits

src/buffer/Buffer.zig

@@ -1317,6 +1317,10 @@ pub fn store_to_file_and_clean(self: *Self, file_path: []const u8) StoreToFileEr
     self.file_utf8_sanitized = false;
 }
 
+pub fn mark_clean(self: *Self) void {
+    self.last_save = self.root;
+}
+
 pub fn is_dirty(self: *const Self) bool {
     return if (!self.file_exists)
         self.root.length() > 0

src/tui/editor.zig

@@ -4724,6 +4724,14 @@ pub const Editor = struct {
     }
     pub const switch_case_meta = .{ .description = "Switch the case of selection or character at cursor" };
 
+    pub fn forced_mark_clean(self: *Self, _: Context) Result {
+        if (self.buffer) |b| {
+            b.mark_clean();
+            self.update_event() catch {};
+        }
+    }
+    pub const forced_mark_clean_meta = .{ .description = "Force current file to be marked as clean" };
+
     pub fn toggle_eol_mode(self: *Self, _: Context) Result {
         if (self.buffer) |b| {
             b.file_eol_mode = switch (b.file_eol_mode) {

src/tui/mainview.zig

@@ -759,8 +759,12 @@ const cmds = struct {
         var buffer_ref: usize = 0;
         if (!try ctx.args.match(.{tp.extract(&buffer_ref)}))
             return error.InvalidShellOutputCompleteArgument;
-        // TODO
+        const buffer = self.buffer_manager.buffer_from_ref(buffer_ref) orelse return;
-        _ = self;
+        if (self.get_active_editor()) |editor| if (editor.buffer) |eb| if (eb == buffer) {
+            editor.forced_mark_clean(.{}) catch {};
+            return;
+        };
+        buffer.mark_clean();
     }
     pub const shell_execute_stream_output_complete_meta = .{ .arguments = &.{ .integer, .string } };