Function split_prefix_latin1_utf16 

fn split_prefix_latin1_utf16<'a, 'b>(
    left: &'a [u8],
    right: &'b [u16],
) -> (&'a [u8], &'a [u8], &'b [u16])

Finds the identical prefix of left containing Latin1 and right containing potentially ill-formed UTF-16.

Returns the identical prefix, the part of left after the prefix, and the part of right after the prefix.

✨ Enabled with the latin1 Cargo feature.