Thanks, good point. So, a 'strong form' of the rule stated in the docs: Do not register/unregister other handlers inside the handler itself. would be: Inside the handler, do not register/unregister other handlers to/from the event that just fired. You are allowed to register/unregister handlers to/f...

I got my answer from ChatGPT. My conclusion: if you do not do crazy stuff like "triggering another event within registration itself" to put the event loop into an infinite loop, you can do it and nothing will go wrong. If anyone is interested, here is the answer (3 pics). eLoop1.png eLoop2.png eLoop...

It says here: https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/api-reference/system/esp_event.html#handler-un-registering-itself In general, an event handler run by an event loop is not allowed to do any registering/unregistering activity on that event loop. Why is that, or, why could i...