[wyuenho]

I'll be entirely satisfied with a process/event queue/loop that we can submit tasks to like Javascript's. There is already a command loop in Emacs, we just can't use it for anything other than input events and commands. Once we have an good event loop, we can build a state machine like Redux on it, then we can start rebuilding the display machinery, then we can start deleting all those hooks that constantly interfere with each other...

[ywei3410]

It already has a process/event queue like JS since Emacs 26. What did you mean in particular?

[wyuenho]

What did YOU mean in particular?

[ywei3410]

I meant exactly that, both core JS and ELisp share the same model of a global interpreter where blocks of code can be interleaved and yielded (both manually and in response to external events). I wanted to know what in particular about JS you were missing.

[wyuenho]

You have been able to emulate cooperative multitasking using callbacks since at least the 70s with lisp. There's always been some form of concurrency in any lisp, the problem is, the event listening/emitter pattern is pretty much not a thing in Emacs, so you can't fire a custom event and hope it will drop into the event loop and get responded to by whatever is listening, because it's not an event loop, it's a command loop. The types of events you can respond to is fixed.