Why use JSON Pointer? We already have structured data (JSON), so what's wrong with ["biscuits", 0, "name"] instead of "biscuits/0/name"? This sidesteps the escaping problem.
And the reason is clearly not brevity, given the rest of the spec.
this post was submitted on 30 Jul 2024
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If you need to refer to a key with ~ or / in its name, you must escape the characters with ~0 and ~1 respectively. For example, to get "baz" from { "foo/bar~": "baz" } you’d use the pointer /foo~1bar~0.
I guess they're using ~ for escaping since backslash is already escaping text content, not that you'd see it very often in keys.
Having magic values instead of using ~~ and ~/ feels ugly.