From f50e307227c8938a57c098edd77098786ea6613a Mon Sep 17 00:00:00 2001
From: bonsaiiV <68749581+bonsaiiV@users.noreply.github.com>
Date: Sun, 3 Aug 2025 13:25:40 +0000
Subject: [PATCH] sway/commands/layout: flatten parent once

Applying layout changes to the parent of the parent, in case the parent only has a single child, stops the creation of a chain of single child containers.

Closes: https://github.com/swaywm/sway/issues/7945
---
 sway/commands/layout.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/sway/commands/layout.c b/sway/commands/layout.c
index 12ce48398..a32c908b8 100644
--- a/sway/commands/layout.c
+++ b/sway/commands/layout.c
@@ -134,6 +134,15 @@ struct cmd_results *cmd_layout(int argc, char **argv) {
 	// Operate on parent container, like i3.
 	if (container) {
 		container = container->pending.parent;
+		// If parent has only a singe child operate on its parent and
+		// flatten once, like i3
+		if (container && container->pending.children->length == 1) {
+			struct sway_container *child = container->pending.children->items[0];
+			struct sway_container *parent = container->pending.parent;
+			container_replace(container, child);
+			container_begin_destroy(container);
+			container = parent;
+		}
 	}
 
 	// We could be working with a container OR a workspace. These are different