Re: [RFC PATCH] Per-window face support

[Daniel Colascione]

>> Sure. Part of the problem is that primitives like assq are hardcoded for
>> eq-comparison,
>
> We can change `assq` to use EQL: any code affected by this change is
> fundamentally broken anyway (for the same reason that (defalias 'eq
> #'eql) should be safe).
>
>> We could add more primitives,
>
> No need, on the contrary: by phasing out `eq` we reduce the traditional
> 3 forms of equality to just 2.

I strongly object. Getting rid of `eq' is just lying to programmers about
object identity.