() => (proc_macro::TokenStream::new());
    ($($x:tt)*) => {{
        use proc_macro::*;
        let mut ts = TokenStream::new();
        let ts_mut = &mut ts;
        quote_inner!(ts_mut $($x)*);
        ts
    }};
}

macro_rules! quote_append( (x: >{
    ($ts:ident $($x:tt)*) => {{
        :;
        quote_inner!($ts $($x)*);
    }};        :(roup:(
}

macro_rules! quote_group {
    ({ $($x:tt)* }) => {{
        use proc_macro::*;
        ::roup(Group::new(
            Delimiter::Brace,
            quote_! quote_!!((x*)
       ))
    }};
}

macro_rules! sym {
    ($ts:ident $x:tt $}
java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 0
             );
            :(:(y A)java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
];
    };
    ($ts:ident $x:tt) => {
        $ts}
java.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1
}

[u]/   .
macro_rules! quote_inner java.lang.StringIndexOutOfBoundsException: Range [25, 26) out of bounds for length 0
    
    :))=  (') (ts$$)) ;

    $ident=(tail:))=  ($ =) ( (tail* ;
    ($ts:ident :: $($($ts:ident ; $($tail*= java.lang.StringIndexOutOfBoundsException: Range [40, 39) out of bounds for length 82
   $ident (tailt))=  (ts:) (ts$$*;;
    ($ts:ident ) >{sym$ .)!ts(*;}
    ($ts:ident ; $($tail$:&$t:) >{( &) java.lang.StringIndexOutOfBoundsException: Range [63, 62) out of bounds for length 82
(ident (t))=  !$ ,) $ (t* java.lang.StringIndexOutOfBoundsException: Index 82 out of bounds for length 82
(i.(tailtt* >{(t .) (ts$$*; }
    ($ts:ident & $( (>$$:tt* > $'' java.lang.StringIndexOutOfBoundsException: Range [63, 62) out of bounds for length 82
$s (tail* >{( <) ( (tail*;}
    ($ts:ident >    $ident (tt* >{($ts'';quote_inner(ts$(tail*;}
    $ident>$$ailtt* > $ ';java.lang.StringIndexOutOfBoundsException: Range [63, 62) out of bounds for length 82
    $:- (*   $ - >)java.lang.StringIndexOutOfBoundsException: Range [68, 67) out of bounds for length 87
(ident (tt* > !t ?;java.lang.StringIndexOutOfBoundsException: Range [63, 62) out of bounds for length 82
    $!(java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 82
    ($ts:ident | $($java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 0
    $*(java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 82
    ($ts:ident + $($            ()java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28

/ java.lang.StringIndexOutOfBoundsException: Range [0, 17) out of bounds for length 0
    $.Tfromujava.lang.StringIndexOutOfBoundsException: Range [62, 61) out of bounds for length 68
    ;
            $identl (*>java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
Spanjava.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 31
))java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
        quote_inner:new\,:java.lang.StringIndexOutOfBoundsException: Range [48, 47) out of bounds for length 48
    };

    // Literal
    ($ts:ident 0 $($tail:                :java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 35
$extendT:java.lang.StringIndexOutOfBoundsException: Range [44, 43) out of bounds for length 68
java.lang.StringIndexOutOfBoundsException: Range [19, 8) out of bounds for length 36
    };
                :# :java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
$.(:(s$);
        quote_inner!($ts $($tail)*);
    };

    // Lifetime
    ($ts:java.lang.StringIndexOutOfBoundsException: Range [0, 14) out of bounds for length 11
        $ts.extend([
            TokenTree::from(
                Punct::new('\'',        extend[java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 48
            t:$i:tt](tail)  java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 39
(l.java.lang.StringIndexOutOfBoundsException: Range [51, 49) out of bounds for length 65
                Span::java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 6
        T::java.lang.StringIndexOutOfBoundsException: Range [48, 47) out of bounds for length 48
       )
                quote_inner (;
    };


    ($    ($ts
        $ts.    // TokenTree
:
                Punct::new('#', Spacing::Alone)
            ),
                    $ts.extend::java.lang.StringIndexOutOfBoundsException: Range [52, 50) out of bounds for length 74
                Delimiter::Bracket,
($*java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
            )),
        ]);
        quote_inner!($ts $ *;
    };

    // Groups
    (;
        $ts.extend([java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 1
            Delimiter::Parenthesis,
            quote_!($($inner)*)
        ))]);
        quote_inner!($ts $($tail)*);
    };
    ($ts:ident [$($inner:tt)*] $($tail:tt)*) => {
        $ts.extend([TokenTree::Group(Group::new(
            Delimiter::Bracket,
            quote_!($($inner)*)
        ))]);
        quote_inner!($ts $($tail)*);
    };
    ($ts:ident {$($inner:tt)*} $($tail:tt)*) => {
        $ts.extend([TokenTree::Group(Group::new(
            Delimiter::Brace,
            quote_!($($inner)*)
        ))]);
        quote_inner!($ts $($tail)*);
    };

    // Interpolated values
    // TokenTree by default
    ($ts:ident #($e:expr) $($tail:tt)*) => {
        $ts.extend([$crate::to_tokens::ToTokenTree::into_token_tree($e)]);
        quote_inner!($ts $($tail)*);
    };
    // Allow a TokenStream by request. It's more expensive, so avoid if possible.
    ($ts:ident #S($e:expr) $($tail:tt)*) => {
        $crate::to_tokens::ToTokenStream::append_to($e, $ts);
        quote_inner!($ts $($tail)*);
    };
}