[Json] YAML schema text isn’t superset of JSON schema

John Carlson <yottzumm@gmail.com> Wed, 20 May 2026 17:53 UTC

MIME-Version: 1.0
From: John Carlson <yottzumm@gmail.com>
Date: Wed, 20 May 2026 12:53:44 -0500
Message-ID: <CAGC3UE=xjHpspGC_sD=t6SHcRRLqSS0oC-OWR8CLjTba9hMhNg@mail.gmail.com>
To: "json@ietf.org" <json@ietf.org>
Content-Type: multipart/alternative; boundary="000000000000ce3ea70652437a6c"
Message-ID-Hash: 2OYCT3V5M6YR6ADUZAIEWKPYTEJF6FAZ
Precedence: list
Subject: [Json] YAML schema text isn’t superset of JSON schema
Archived-At: <https://mailarchive.ietf.org/arch/msg/json/9boDMWrT6IibNNJRVbRXmA6cHyU>

*I found a disconcerting example of YAML schema here:*


*https://yaml-schema.net/features/types.html
<https://yaml-schema.net/features/types.html>*


*Invalid examples:*

-001 invalid: "value"

*Error:* [1:1] .: Property name '-001 invalid' does not match pattern
'^[A-Za-z_][A-Za-z0-9_]*$'


Many of our property names start with @, # and -, so they wouldn’t match
the regular expression above.  So YAML schema isn’t a superset of JSON
schema, it’s another beast entirely.

Thanks,

John

[Json] YAML schema text isn’t superset of JSON sc… John Carlson
[Json] Re: YAML schema text isn’t superset of JSO… Karen Etheridge
[Json] Re: YAML schema text isn’t superset of JSO… Karen Etheridge
[Json] Re: YAML schema text isn’t superset of JSO… John Carlson
[Json] Re: YAML schema text isn’t superset of JSO… John Carlson