AppendRune appends the UTF-8 encoding of r to the end of p and returns the extended buffer.

DecodeLastRune unpacks the last UTF-8 encoding in p and returns the rune and its width in bytes.

DecodeLastRuneInString is like [DecodeLastRune] but its input is a string.

DecodeRune unpacks the first UTF-8 encoding in p and returns the rune and its width in bytes.

DecodeRuneInString is like [DecodeRune] but its input is a string.

EncodeRune writes into p (which must be large enough) the UTF-8 encoding of the rune.

FullRune reports whether the bytes in p begin with a full UTF-8 encoding of a rune.

FullRuneInString is like FullRune but its input is a string.

RuneCount returns the number of runes in p.

RuneCountInString is like [RuneCount] but its input is a string.

RuneLen returns the number of bytes in the UTF-8 encoding of the rune.

RuneStart reports whether the byte could be the first byte of an encoded, possibly invalid rune.

Valid reports whether p consists entirely of valid UTF-8-encoded runes.

ValidRune reports whether r can be legally encoded as UTF-8.

ValidString reports whether s consists entirely of valid UTF-8-encoded runes.

Maximum valid Unicode code point.

the "error" Rune or "Unicode replacement character".

characters below RuneSelf are represented as themselves in a single byte.

maximum number of bytes of a UTF-8 encoded Unicode character.