Function walk_to

atomic-cli/src/agent_error.rs:194–206

Descend to the node named by a registry key, stopping at the first segment that does not resolve.

(root: &'a clap::Command, key: &str)

/// Descend to the node named by a registry key, stopping at the first segment
/// that does not resolve.
fn walk_to<'a>(root: &'a clap::Command, key: &str) -> &'a clap::Command {
    let mut node = root;
    if key.is_empty() {
        return node;
    }
    for part in key.split(' ') {
        match node.find_subcommand(part) {
            Some(child) => node = child,
            None => break,
        }
    }
    node
}

fn ctx_str(err: &clap::Error, kind: ContextKind) -> Option<String> {
    match err.get(kind) {