Function optional

pub fn optional(token: Token) -> Token

Matches the input with and without the contained token.

Examples

use initiative_core::command::prelude::*;

let token = optional(keyword("badger"));

assert_eq!(
    vec![
        // Passes the input directly through to the overflow,
        FuzzyMatch::Overflow(TokenMatch::from(&token), "badger".into()),

        // as well as the matched result if present.
        FuzzyMatch::Exact(TokenMatch::new(&token, TokenMatch::from(&keyword("badger")))),
    ],
    token
        .match_input("badger", &app_meta)
        .collect::<Vec<_>>()
        .await,
);