1
This is just copied (including end of line).
1
[def,321,<$3-$2-$1>][321,This,is,fun]
1
[def,321,<$3-$2-$1>][321,[321,A,B,C],D,E]
1
[def,321,<$3-$2-$1>][321,This,is,fun][321,[321,A,B,C],D,E]
3
[def,321,<$3-$2-$1>]
[321,This,is,fun]
[321,[321,A,B,C],D,E]
3
[def,A,<$1[B]$2>]
[def,B,*B*]
[A,1,2]
2
[def,#,<[-]$1[-]$2[-]$3[-]>][def,-,<$0>][def,DEF,def][[DEF],X,THIS IS X]
[X][#,DEF,#,X]
2
[def,A,<A$1A>][def,B,<B[A,X$1X]B>][def,APA,<P$1$1P>]
[A,<[A,X]>]
1
[def,one,1][def,two,2][def,three,3][one][two][three]
1
[def,one,1<$1>][def,two,2<$1>][def,three,3<$1>][one,1][two,2][three,3]
1
[def,one,1<$1>][def,two,2<$1>][def,three,3<$1>][one,[one,1]][two,[two,2]]
2
[def,skip1,2<$2>][skip1,1,2]
[skip1,This is a very long argument that is totally unused,2]
14
[def,A,<A$1A>][def,B,<B[A,X$1X]B>][def,APA,<P$1$1P>]
<[A,C]> = [A,C]
<[A,ACA]> = [A,ACA]
<[A,[A,C]]> = [A,[A,C]]
<[A,XDX]> = [A,XDX]
<[B,D]> = [B,D]
<[A,P]> = [A,P]
<[APA,Y]> = [APA,Y]
<[[A,P],Y]> = [[A,P],Y]
<Q<[A,C]>R> = Q<[A,C]>R
<[A,<[A,X]>]> = [A,<[A,X]>]
<[B,<[A,X]>]> = [B,<[A,X]>]
<Q<[>R<]>> = Q<[>R<]>
<Q<<[A,C]>>R> = Q<<[A,C]>>R
0