Re: Predicate for true lists

[Paul Eggert]

Eli Zaretskii wrote:
> Do we really want this usage of the function as a predicate?  I find
> this slightly unnatural,

Me too, but we haven't come up with a better function semantics, so let's just 
live with them. I don't care whether the function is called proper-list-length 
or proper-list-p. (As Drew mentioned, we could have both names.)

> and also not future-proof enough, because you
> rely on the checks 'length' does internally.

I see now that those checks of 'length' were documented incorrectly, so I 
installed the attached documentation fix into the emacs-26 branch. It should be 
OK to rely on these checks (after all, they're documented correctly now :-).

0001-Fix-length-CIRCULAR-documentation.patch
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