Function hash_substring

crates/common/src/env.rs:604–609

(ss: &Substring, hasher: &mut blake3::Hasher)

    Int::NegSucc(n) => {
      hasher.update(&[1]);
      hasher.update(&n.to_le_bytes());
    },
  }
}

/// A substring reference: a string together with start and stop byte positions.
#[derive(Debug, PartialEq, Eq, Clone, Hash)]
pub struct Substring {
  /// The underlying string.