Macro terms::sub_patterns

macro_rules! sub_patterns {
    ( $subs:ident $f:tt ( $( $sub:tt )* ), $( $tail:tt )+ ) => { ... };
    ( $subs:ident $f:tt ( $( $sub:tt )* ), ) => { ... };
    ( $subs:ident $f:tt ( $( $sub:tt )* ) ) => { ... };
    ( $subs:ident $f:tt, $( $tail:tt )+ ) => { ... };
    ( $subs:ident $f:tt, ) => { ... };
    ( $subs:ident $f:tt ) => { ... };
    ( $subs:ident ? $x:tt, $( $tail:tt )+ ) => { ... };
    ( $subs:ident ? $x:tt, ) => { ... };
    ( $subs:ident ? $x:tt ) => { ... };
}