Re: [uievents] beforeInput should also be triggered when no "character value" is produced (#4)

Sounds like that this should be moved to Editing API's issue list.

If we need to fire beforeinput event for non-user input like "paste" or something (which are just default actions, not directly inputted by users), such beforeinput event shouldn't be cancelable. Because of that non-user input may occur during unsafe time. For example, it might be emulated with mutation events. In this case, cancelable events need to be fired synchronously (not putting into the queue). Therefore, such event has security problem (e.g., can change DOM tree again, that causes new mutation events!).

---
Reply to this email directly or view it on GitHub:
https://github.com/w3c/uievents/issues/4#issuecomment-151684934