bug#65017: 29.1; Byte compiler interaction with cl-lib function objects, removes symbol-function

[Mattias Engdegård]

3 aug. 2023 kl. 23.46 skrev Stefan Monnier <monnier@iro.umontreal.ca>:

> I'd even like it to try and replace uses of `eq/eql` with `equal` in
> those cases where we want to overlook differences in symbol-positions, so
> that we can eventually get rid of `symbols-with-pos-enabled` which
> I consider as a wart.

I agree it would be wonderful if we could restore `eq` to its former simplicity 
and speed but is that easily achievable at this point? For example, what about 
macros that compare arguments with `eq`?

Separate data structures for locations might be an option worth exploring, 
keeping the actual s-expressions unadorned. Consider a reader mode that also 
produces a table mapping cons cells read to their locations, for example.

(By the way, I removed the unwind-eq commutation on master for now.)