vis

commit 1156af651f2baa7978c24c1de43b77c4bf3e2bab
parent 04766ba6c9872cc297293ac90c3098a2bd1e5ee4
Author: Karthin Srinavakili <karthin@karthin.com>
Date:   Mon,  4 Sep 2023 13:31:48 -0400

vis-lua: fail when mapping a key to an invalid handler type

When passing an invalid handler type (i.e., any type that isn't a
string, function, or KeyAction) to Vis:map/Window:map, the editor would
map the key to an empty (zeroed) KeyBinding struct.  vis_keys_process()
doesn't take this into account, so the key is never consumed from
the input queue, causing the editor to get stuck in an infinite loop.

Diffstat:
M
vis-lua.c
 | 
2
++

1 file changed, 2 insertions(+), 0 deletions(-)
diff --git a/vis-lua.c b/vis-lua.c
@@ -832,6 +832,8 @@ static int keymap(lua_State *L, Vis *vis, Win *win) {
 			goto err;
 	} else if (lua_isuserdata(L, 4)) {
 		binding->action = obj_ref_check(L, 4, VIS_LUA_TYPE_KEYACTION);
+	} else {
+		goto err;
 	}
 
 	if (win) {