[whatwg] Need clarification on DOM exceptions thrown by canvas 2D drawImage

[Justin Novosad]

Hi Ian,

I just wanted to revive this thread because the issue of what to do
with source rectangles that are partially outside of the source image
in calls to canvas drawImage is still not completely resolved.

The discussion continued here: https://bugs.webkit.org/show_bug.cgi?id=65709
It is now spun-off into a separate issue:
https://bugs.webkit.org/show_bug.cgi?id=66574

In the discussion for 65709, we think we figured out what the right
thing to do is. Nonetheless, it would probably be best if the matter
could be settled definitively and formally in the specification.

Thanks,

    -Justin