Function single

std/re/src/main/parser.rs:339–341

(item: ClassItem)

}

fn single(item: ClassItem) -> Vec<ClassItem> {
    alloc::vec![item]
}

fn is_flag_char(c: char) -> bool {
    matches!(c, 'i' | 's' | 'm' | 'a' | 'L' | 'u' | 'x')