bug#68244: hash-table improvements

[Mattias Engdegård]

13 feb. 2024 kl. 10.05 skrev Gerd Möllmann <gerd.moellmann@gmail.com>:

> I wonder, what does your code do for the places using (make-vector n 0)
> create obarrays? I'm not 100% sure, but I think Cedet was an example of
> that in Emacs itself.

That code would still work, but just for completeness I changed all those 
instances to using `obarray-make`, including cedet. (See the branch 
scratch/obarray.)

A more worrying problem is code that uses `obarray-make` but assumes the result 
to be vectors. It may be unsafe to let obarray-make return an obarray object 
for that reason. With Stefan's suggestion, if I understood it right, we'd have 
`obarray-make` return (vector 0). I'll give it a try.