Re: Always-true predicate?

[Lars Ingebrigtsen]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

> I love functions, and am in no small part to blame for the use of
> functions like `ignore` as default value of variables (more often
> `defvar` than `defcustom`, but still), but indeed giving name to those
> functions is important: it's not just that `always` saves a few bytes
> over `(lambda (&rest _) t)` in the `.el` file (and then again in the
> `.elc` and in RAM), but also that `C-h v` gives more readable output
> (and if that value ever finds its way elsewhere, you can easily jump to
> its definition).

So we have some people for it, and some against it. If I read Eli
correctly, he was not strictly speaking against it, but more worried
that its presence would lead to more pure-predicate user options in
general.  I agree that those should be avoided, but `always' is still a
handy, obvious value that should be available in the users' repertoire
when constructing their own predicates (like with `ignore').

So I've now added it to Emacs 28.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no