Re: x-backspace-delete-keys-p without XKB support

[Dan Nicolaescu]

Stefan Monnier <address@hidden> writes:

  > > Given that the condition that x-backspace-delete-keys-p is quite odd,
  > > and probably unlikely to happen, it is better in the case that we
  > > don't have enough information (because XKB is not supported at
  > > either run time or compile time) to return t. The result is that
  > > [backspace] would delete backwards and [delete] forwards. 
  > 
  > > May I install this patch:
  > 
  > I think a better patch would have the function return `dontknow' when it
  > doesn't know.

I was thinking about that too, but is there any use for `dontknow'? 
There's exactly one user of this function, in simple.el, and it only
cares about x-backspace-delete-keys-p returning false... 
Wouldn't returning `dontknow' just add complexity for no real gain?