Macro oatie::add_span

macro_rules! add_span {
    ( @str_literal $e:expr ) => { ... };
    ( @kind AddSkip $b:expr $(,)* ) => { ... };
    ( @kind AddText { $( $e:expr => $c:expr ),+ , $b:expr  $(,)* } $(,)* ) => { ... };
    ( @kind AddText $b:expr $(,)* ) => { ... };
    ( @kind AddWithGroup [ $( $v:tt )* ] $(,)* ) => { ... };
    ( @kind AddGroup $b:expr , [ $( $v:tt )* ] $(,)* ) => { ... };
    ( ) => { ... };
    ( $( $i:ident ( $( $b:tt )+ ) ),+ $(,)* ) => { ... };
}