> > It doesn't on Emacs 22:
>
> > (char-or-string-p -4)
> > t
>
> > and if it does on Emacs 23 then I think that must be the bug.
>
> Emacs 23 surely returns nil in that case. I think the
> behaviour of Emacs 22 is a bug (or at least very confusing).
Emacs 21 appears to have the same behaviour.
> Don't people think OBJ can be safely used as an argument of
> a function that expects a character (e.g. insert,
> char-to-string) if (char-or-string-p OBJ) is true?
The manual says:
A "character" in Emacs Lisp is nothing more than an integer.
That would have to change.
And continues with:
In
other words, characters are represented by their character codes. For
example, the character `A' is represented as the integer 65.
Perhaps the `character' -4 just doesn't have a representation/character code.
I also find this confusing:
(eq 1 1)
t
(eq 1.0 1.0)
nil
but perhaps "Ours is not to reason why..."
--
Nick http://www.inet.net.nz/~nickrob
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