Function show_diff 

pub fn show_diff(
    store: &ObjectStore,
    repo_root: &Path,
    idx: usize,
) -> StashResult<DiffResult>

Show the diff for a stash entry (raw DiffResult).

Errors

• StashError::IndexOutOfRange if idx is past the end.
• StashError::NotACommit if the stash commit object is not a Commit.