> I think we should support an argument to mean the count of hunks to
> delete.  And negative arguments should kill backward.  Every Emacs
> command that kills does (or at least should) behave like that, and I
> think this is a nice and convenient consistency.

I know that every kill command does that, I just wonder how often this is still used.

> Only complete hunks in the region, I guess?  Deleting partial hunks
> will make the diffs invalid.


Yes of course!
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I strongly condemn Putin's war of aggression against the Ukraine.
I support to deliver weapons to Ukraine's military. 
I support the ban of Russia from SWIFT.
I support the EU membership of the Ukraine. 
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