bug#42994: 27.1; json-serialize unable to serialize JSON values

[Jimmy Yuen Ho Wong <wyuenho@gmail.com>]

(json-serialize t) ;; *** Eval error ***  Wrong type argument: json-value-p, t
(json-serialize "foo") ;; *** Eval error ***  Wrong type argument:
json-value-p, "foo"
(json-serialize 1) ;; *** Eval error ***  Wrong type argument: json-value-p, 1

These are all valid JSONs.

On Sun, Aug 23, 2020 at 1:53 PM Eli Zaretskii <eliz@gnu.org> wrote:
>
> > From: Jimmy Yuen Ho Wong <wyuenho@gmail.com>
> > Date: Sun, 23 Aug 2020 13:24:58 +0100
> >
> >
> > According to the [JSON spec](https://www.json.org/json-en.html),
> > everything is a value and every value is a valid JSON, which means
> > literal string, numbers, and true, false and null are also valid JSON
> > values, but `json-serialize` is unable to serialize literals. This is
> > wrong and behaviorialy different from the elisp-based `json-encode`.
>
> Thank you for your report.  To allow us to process this issue quickly
> and efficiently, please provide a couple of examples where
> json-serialize is unable to serialize literals.