Struct CommandCollection 

pub struct CommandCollection {
    pub base: Group,
    pub sources: Vec<Group>,
}

A group-like command that merges commands from multiple groups.

This is the click-rs equivalent of Python Click’s CommandCollection. Commands are resolved by searching the base group first, then each source group in insertion order.

Only the base group’s parameters (options/arguments/callback/help) are used.

Fields

base: Group

The base group providing parameters and help formatting.

sources: Vec<Group>

Additional groups to source subcommands from.

Implementations

impl CommandCollection

pub fn new(name: &str) -> CommandCollectionBuilder

Create a new CommandCollection builder with the given base name.

The base group can register its own subcommands via .command(...).

pub fn add_source(&mut self, group: Group)

Add a source group.

pub fn get_command(&self, name: &str) -> Option<&dyn CommandLike>

Get a subcommand by name, searching base first then sources.

pub fn list_commands(&self) -> Vec<String>

List all unique subcommand names from base + sources, sorted.

Trait Implementations

impl CommandLike for CommandCollection

fn name(&self) -> Option<&str>

Get the name of this command.

fn make_context( &self, info_name: &str, args: Vec<String>, parent: Option<Arc<Context>>, ) -> Result<Context, ClickError>

Create a context for executing this command.

fn invoke(&self, ctx: &Context) -> Result<(), ClickError>

Invoke the command with the given context.

fn main(&self, args: Vec<String>) -> Result<(), ClickError>

Main entry point - make context, parse args, and invoke.

fn get_help(&self, ctx: &Context) -> String

Get the full help text for this command.

fn get_short_help(&self) -> String

Get the short help text for command listings.

fn is_hidden(&self) -> bool

Check if this command is hidden from help output.

fn get_usage(&self, ctx: &Context) -> String

Get the usage line for this command.

fn as_any(&self) -> &dyn Any

Convert to Any for downcasting.

impl Debug for CommandCollection

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.