bug#31138: Native json slower than json.el

[Dmitry Gutov]

On 24.04.2019 20:06, Eli Zaretskii wrote:

> No, I think it's decoded by low-level code which reads output from the
> process.  At least by default.

But what conversion primitives does that low-level code use? 
code_convert_region?

> The question is, do we want to signal an error ourselves, or do we
> want to rely on the library?

Relying on the library is probably faster. Though I'm not sure why we 
would be confident enough to rely on it in this case, but not the other.

I'll happily benchmark a patch, if you have any.