Can Keywords contain escape characters? about edn

[xpe]

Correct; those examples are not valid.

The Spec clears this up. See these parts:

Keywords are identifiers that typically designate themselves. They are semantically akin to enumeration values. Keywords follow the rules of symbols, except they can (and must) begin with :, e.g. :fred or :my/fred.

Symbols begin with a non-numeric character and can contain alphanumeric characters and . * + ! - _ ? $ % & = < >. If -, + or . are the first character, the second character (if any) must be non-numeric. Additionally, : # are allowed as constituent characters in symbols other than as the first character.

The backslash is not an allowed character in a symbol nor a keyword.

I think we can close this issue now.