There are some problems in the String documentation.

[luminecs]

I was reading some elixir documentation recently. Today I found that the following statements have inconsistent results.

doc url

Executing these statements on my computer gave different results.

user@fedora:~$ iex
Erlang/OTP 27 [erts-15.2] [source] [64-bit] [smp:16:16] [ds:16:16:10] [async-threads:1] [jit:ns]

Interactive Elixir (1.18.2) - press Ctrl+C to exit (type h() ENTER for help)
iex(1)> String.chunk(<<?a, ?b, ?c, 0>>, :valid)
[<<97, 98, 99, 0>>]
iex(2)> String.chunk(<<?a, ?b, ?c, 0, 0xFFFF::utf16>>, :valid)
[<<97, 98, 99, 0>>, <<255, 255>>]
iex(3)> String.chunk(<<?a, ?b, ?c, 0, 0x0FFFF::utf8>>, :printable)
["abc", <<0, 239, 191, 191>>]

[josevalim]

Would you like to send a PR updating those? To be clear, they are both correct, cause they represent the same data, but I think we should stick to the format that the user would actually see to avoid confusion.