Re: How to test for native JSON support?

[Joost Kremers]

On Tue, May 04 2021, Eli Zaretskii wrote:
> The message is "jansson library not found".
>
> But to answer your question, you should allow the user to determine
> whether the built-in or the Lisp implementation will be used, because
> only the user knows whether the library is installed.

I'm not sure every user will. I suspect many won't care either way, as long as
the relevant json file can be read.

>> And is there a reason why the native json-functions do not gracefully degrade
>> to
>> their counterparts in the `json.el` library?
>
> First, because no one wrote the code to do that; patches welcome.
> Second, because the implementations are not 100% equivalent, neither
> in the API names nor in some aspects of the functionality.  So
> automatic replacement is not trivial, not in general anyway.

Ok, I see. I haven't run into any functionality differences yet, but if and when
I do, I'll deal with them then. Then who knows, some day I might be able to
write that patch...

Thanks for your answer!

-- 
Joost Kremers
Life has its moments