Function expr_binary_byte_term 

pub(crate) fn expr_binary_byte_term(
    left: &Expr,
    right: &Expr,
    index: usize,
    op: ExprOp,
    identity: impl Fn(u8) -> bool,
    absorbing: impl Fn(u8) -> bool,
) -> Option<Expr>

Returns the expr_binary_byte_term address normalization helper result.