How to bind multiple functions using add_key_binding

[ahaoboy]

For the demo script, how can I print 1 and 2 on mouse click, I tried different flags, but it seems to only output 2.

mp.add_forced_key_binding(
  "MOUSE_BTN0",
  "MPV_EASY_SPEED",
  function cb(event) {
    print(1)
  },
  {
    // complex: true,
    repeatable: true,
    // forced: false,
    forced: true,
  }
)


mp.add_forced_key_binding(
  "MOUSE_BTN0",
  "MPV_EASY_SPEED2",
  function cb(event) {
    print(2)
  },
  {
    // complex: true,
    // repeatable: true,
    forced: true,
  }
)

[avih]

Like the docs say:

Trying to map multiple commands to a key will essentially prefer a random binding, while the other bindings are not called.

So the answer is that you can't do that using multiple calls to mp.add_[forced_]key_binding.

You can, however, add one binding, where your callback function calls several different functions.

[ahaoboy]

Yes, I noticed that the js implementation does not use an array or set to save the callback function, but directly uses a field, which will cause the newly bound function to replace the old function.

function add_binding(forced, key, name, fn, opts) {

[avih]

It's not an implementation issue. It's by design, and it's the same for lua and js.