vis-lua: correctly treat return value of input event handler

Returning true from the event handler, indicating that the
keys were consumed, should now prevent insertion as mentioned
in the documentation.

 vis.events.subscribe(vis.events.INPUT, function(key)
 	if key == ' ' then
		-- do something fancy here
 		return true
 	end
 end)

1 files changed, 1 insertions, 1 deletions

diff --git a/vis-lua.c b/vis-lua.c
index 0fdf225..17f0004 100644
--- a/vis-lua.c
+++ b/vis-lua.c
@@ -2439,7 +2439,7 @@ static bool vis_lua_input(Vis *vis, const char *key, size_t len) {
 	vis_lua_event_get(L, "input");
 	if (lua_isfunction(L, -1)) {
 		lua_pushlstring(L, key, len);
-		if (pcall(vis, L, 1, 1) != 0) {
+		if (pcall(vis, L, 1, 1) == 0) {
 			ret = lua_isboolean(L, -1) && lua_toboolean(L, -1);
 			lua_pop(L, 1);
 		}