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bug#42733: 27.1; json-serialize doesn't not encode list like json-encode
From: |
Philipp |
Subject: |
bug#42733: 27.1; json-serialize doesn't not encode list like json-encode |
Date: |
Mon, 5 Jul 2021 19:45:19 +0200 |
> Am 12.06.2021 um 14:53 schrieb Lars Ingebrigtsen <larsi@gnus.org>:
>
> Jimmy Yuen Ho Wong <wyuenho@gmail.com> writes:
>
>> (json-encode '("foo" "bar"))
>> => "[\"foo\",\"bar\"]"
>>
>> (json-serialize '("foo" "bar"))
>>
>> Debugger entered--Lisp error: (wrong-type-argument symbolp "foo")
>> json-serialize(("foo" "bar"))
>>
>> The potential for people to naively substitute json-encode with
>> json-serialize and breaking their code is enormous. This is already
>> happening in lsp-mode. Please make json-serialize behave like
>> json-encode.
>
> json.c is a lot less "DWIM" than json.el -- which I think is generally a
> good idea when it comes to doing round-trips between Elisp and JSON,
> because you avoid a lot of corner cases.
>
> So I'd be inclined to just regard this as a feature, but I've added
> Philipp to the CCs -- perhaps he has some comments.
What Lars said. In general, DWIM can be a good choice for high-level
user-facing commands, but not for lower-level library functions like this.
Second-guessing the intention of the caller often generates surprising or
subtly wrong results, which isn't what you want for interpreting a rather
low-level protocol like JSON. json-serialize thus very intentionally behaves
differently than the json.el functions.
- bug#42733: 27.1; json-serialize doesn't not encode list like json-encode,
Philipp <=