example

    use regexp2rust_macro::regex2rust;
    regex2rust!( foo = "12345(?<abc>123)" "ui");
    assert_eq!(foo::exec(" 12345123"),[Some([1,9]),Some([6,9])]);
    assert_eq!(foo::Group::abc as usize,1usize);
    assert_eq!(foo::exec(" 12345123")[foo::Group::abc as usize],Some([6,9]));

for workspace

#Cargo.toml
[workspace]
members = ["yourcrate"]
resolver = "2"