Method rsplitn

crates/wtf8/src/lib.rs:1055–1059

(&self, n: usize, pat: &Wtf8)

    }

    pub fn rsplitn(&self, n: usize, pat: &Wtf8) -> impl Iterator<Item = &Self> {
        self.as_bytes()
            .rsplitn_str(n, pat)
            .map(|w| unsafe { Wtf8::from_bytes_unchecked(w) })
    }

    pub fn trim(&self) -> &Self {
        let w = self.bytes.trim();