From 2521ef7bc447a241e5e6169f01d386a8d5049c84 Mon Sep 17 00:00:00 2001
From: Michael Sloan <michael@zed.dev>
Date: Mon, 11 Nov 2024 21:28:26 -0700
Subject: [PATCH] Document why join_lines has a special case for single-line
 selections (#20528)

Release Notes:

- N/A
---
 crates/editor/src/editor.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/crates/editor/src/editor.rs b/crates/editor/src/editor.rs
index bd78020608f91b7636895e9bdd17f267ebd05527..638babe7ecc36be9e6191f0d5b480a1b7caf119f 100644
--- a/crates/editor/src/editor.rs
+++ b/crates/editor/src/editor.rs
@@ -6313,6 +6313,8 @@ impl Editor {
         let mut row_ranges = Vec::<Range<MultiBufferRow>>::new();
         for selection in self.selections.all::<Point>(cx) {
             let start = MultiBufferRow(selection.start.row);
+            // Treat single line selections as if they include the next line. Otherwise this action
+            // would do nothing for single line selections individual cursors.
             let end = if selection.start.row == selection.end.row {
                 MultiBufferRow(selection.start.row + 1)
             } else {