1 files changed, 13 insertions, 0 deletions

diff --git a/include/sway/tree/container.h b/include/sway/tree/container.h
index c9290108..7e9df59f 100644
--- a/include/sway/tree/container.h
+++ b/include/sway/tree/container.h
@@ -374,4 +374,17 @@ bool container_is_sticky(struct sway_container *con);
 
 bool container_is_sticky_or_child(struct sway_container *con);
 
+/**
+ * This will destroy pairs of redundant H/V splits
+ * e.g. H[V[H[app app]] app] -> H[app app app]
+ * The middle "V[H[" are eliminated by a call to container_squash
+ * on the V[ con. It's grandchildren are added to it's parent.
+ *
+ * This function is roughly equivalent to i3's tree_flatten here:
+ * https://github.com/i3/i3/blob/1f0c628cde40cf87371481041b7197344e0417c6/src/tree.c#L651
+ *
+ * Returns the number of new containers added to the parent
+ */
+int container_squash(struct sway_container *con);
+
 #endif