Function visible_subcommands

atomic-cli/tests/cli_surface_integration_test.rs:37–82

Extract the first column from Clap's `Commands:` section. Command rows have exactly two leading spaces. Wrapped descriptions are indented further, so they are ignored.

(help: &str)

/// Command rows have exactly two leading spaces. Wrapped descriptions are
/// indented further, so they are ignored.
fn visible_subcommands(help: &str) -> Vec<String> {
    let mut in_commands = false;
    let mut commands = Vec::new();

    for raw_line in help.lines() {
        let line = raw_line.trim_end_matches('\r');

        if line == "Commands:" {
            in_commands = true;
            continue;
        }

        if !in_commands {
            continue;
        }

        if line.is_empty() {
            if !commands.is_empty() {
                break;
            }
            continue;
        }

        let Some(row) = line.strip_prefix("  ") else {
            break;
        };

        if row.starts_with(char::is_whitespace) {
            continue;
        }

        let Some(name) = row.split_whitespace().next() else {
            continue;
        };

        // Clap adds this standard dispatcher automatically. Its child paths
        // duplicate the commands already traversed from their canonical path.
        if name == "help" {
            continue;
        }

        commands.push(name.to_string());
    }

    commands
}

#[test]
fn every_public_command_renders_help() {