tmux-unbind-all-crash.patch

.tmux.conf

set-option -g prefix C-a

# If we perform "unbind-key a" within a keybind
# It will have very high probability to crash
bind-key          u unbind-key -a

# Following code shows a general use case:
# * I want to unbind all keys in .tmux.conf, then bind everything by myself
# * I need a hotkey to reload my .tmux.conf script
# When I try to reload, tmux server crashes.
unbind-key -a
bind-key          r source-file ~/.tmux.conf

tmux-unbind-all-crash.patch

Index: cmd-unbind-key.c
===================================================================
--- cmd-unbind-key.c	(revision 2576)
+++ cmd-unbind-key.c	(working copy)
@@ -59,9 +59,7 @@
 	if (args_has(args, 'a')) {
 		while (!SPLAY_EMPTY(&key_bindings)) {
 			bd = SPLAY_ROOT(&key_bindings);
-			SPLAY_REMOVE(key_bindings, &key_bindings, bd);
-			cmd_list_free(bd->cmdlist);
-			xfree(bd);
+			key_bindings_remove(bd->key);
 		}
 		return (0);
 	}