Defined in File utf.h
escape_rune
Given a rune, convert it to an ASCII escape sequence.
Slice of dest with correct length.
dest
[out] dest: Empty string, should be large enough for minimum 4 bytes, plus 1 byte for the NUL-terminator.
[out] dest
[in] ch: The UCS-4 rune to convert from.
[in] ch
Contents: