Macro argone::ARGS

macro_rules! ARGS {
    (@ SomeOrNone $yes : expr) => { ... };
    (@ SomeOrNone) => { ... };
    (@ Parse) => { ... };
    (@ Parse $file : literal, $($prefix : literal) ?,
 $(($($config_panic : expr), *)) ?) => { ... };
    (@ SetConfig $config : expr, $file : literal,,) => { ... };
    (@ SetConfig $config : expr, $file : literal,, ($($config_panic : expr), *)) => { ... };
    (@ SetConfig $config : expr, $file : literal, $prefix : literal,) => { ... };
    (@ SetConfig $config : expr, $file : literal, $prefix : literal,
 ($($config_panic : expr), *)) => { ... };
    (@ SetConfig @ If $conf : expr, $opts : expr, $ident : ident,,) => { ... };
    (@ SetConfig @ If $conf : expr, $opts : expr, $ident : ident, [Config],
 $($def_val : expr) ?) => { ... };
    (@ Args
 {
     #[$meta : meta]
     $($(#[$f_meta : meta]) * $([$tt : tt]) ? $name : ident : $ty : ty
       $(= $default : expr) ?,) *
 }) => { ... };
    ($(#[$main_meta : meta]) * $(version = $version : literal) ?
 $(author = $author : literal) ? $(about = $about : literal) ?
 $(Config
   {
       file = $config_file : literal $(prefix = $config_prefix : literal) ?
       $(panic = ($($config_panic : expr), *)) ?
   }) ? Args
 {
     $($(#[$args_meta : meta]) * $([$tt : tt]) ? $args_name : ident : $args_ty
       : ty $(= $args_default : expr) ?) +
 } $($(#[$subcommands_meta : meta]) * commands = $subcommands : ty) ?) => { ... };
}