From 4de0bd4c5c9eec6dd71cac87b91e736944896c22 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Sat, 16 May 2020 15:46:01 +0000
Subject: [PATCH] Add M-+ and M-- to expand and collapse all items in tree
 mode.

---
 mode-tree.c | 12 +++++++++++-
 tmux.1      |  4 ++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/mode-tree.c b/mode-tree.c
index 8d210d72..c08c802d 100644
--- a/mode-tree.c
+++ b/mode-tree.c
@@ -887,7 +887,7 @@ mode_tree_key(struct mode_tree_data *mtd, struct client *c, key_code *key,
     struct mouse_event *m, u_int *xp, u_int *yp)
 {
 	struct mode_tree_line	*line;
-	struct mode_tree_item	*current, *parent;
+	struct mode_tree_item	*current, *parent, *mti;
 	u_int			 i, x, y;
 	int			 choice;
 	key_code		 tmp;
@@ -1058,6 +1058,16 @@ mode_tree_key(struct mode_tree_data *mtd, struct client *c, key_code *key,
 			mode_tree_build(mtd);
 		}
 		break;
+	case '-'|KEYC_ESCAPE:
+		TAILQ_FOREACH(mti, &mtd->children, entry)
+			mti->expanded = 0;
+		mode_tree_build(mtd);
+		break;
+	case '+'|KEYC_ESCAPE:
+		TAILQ_FOREACH(mti, &mtd->children, entry)
+			mti->expanded = 1;
+		mode_tree_build(mtd);
+		break;
 	case '?':
 	case '/':
 	case '\023': /* C-s */
diff --git a/tmux.1 b/tmux.1
index 97d57d5b..d115329d 100644
--- a/tmux.1
+++ b/tmux.1
@@ -1903,6 +1903,10 @@ The following keys may be used in tree mode:
 .It Li "Enter" Ta "Choose selected item"
 .It Li "Up" Ta "Select previous item"
 .It Li "Down" Ta "Select next item"
+.It Li "+" Ta "Expand selected item"
+.It Li "-" Ta "Collapse selected item"
+.It Li "M-+" Ta "Expand all items"
+.It Li "M--" Ta "Collapse all items"
 .It Li "x" Ta "Kill selected item"
 .It Li "X" Ta "Kill tagged items"
 .It Li "<" Ta "Scroll list of previews left"