cancelability in level 1 of input-events spec

Hey,
the TAG review of the input events spec asked us among other things to
convert the long list of inputType values to a table. I have now done that
for both levels. Now that I am done I get a clearer picture of which iof
the inputTypes the Google people decided to not make cancelable in the
level 1 version. They are marked as "Undefined" so that also those
implementing level 2 are compliant with level 1. [1]

I wonder though -- what made you guys decide to make exactly those not be
cancelable? For example, inserting an ordered list can be canceled, but
inserting a paragraph break cannot be canceled. Neither one of these should
be happening during an IME composition, right? Or if I hit a special key
combination to delete a word backward, that cannot be canceled. But if
instead I select the word and hit the key combination for cut, that is
cancelable.

Is this list meant to be final or is this still work in progress? If this
is final, then maybe it would be a good idea to write up soem explanation
fro the philosophy that lies behind these choices. Otherwise I am sure a
lot of JS devs will be just as confused as me about this.


[1]
https://rawgit.com/w3c/input-events/v1/index.html#h-interface-inputevent-attributes




-- 
Johannes Wilm
http://www.johanneswilm.org
tel: +1 (520) 399 8880