(still broken) str: stop encoding invalid code points #5151
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Currently fails in the
json::tests::test_read_str
test. I'm not sure why.The highest valid code point is 1114111 (0x10FFFF) and the modern UTF-8
standard guarantees that the maximum number of bytes needed to encode a
code point is 4 (instead of 6, in the legacy standard).
From https://tools.ietf.org/html/rfc3629:
Changes from RFC 2279
o Restricted the range of characters to 0000-10FFFF (the UTF-16
accessible range).