It won't be covered in the book. The source code has to be useful for something, after all.
Larry WallWhen they first built the University of California at Irvine they just put the buildings in. They did not put any sidewalks, they just planted grass. The next year, they came back and put the sidewalks where the trails were in the grass. Perl is just that kind of language. It is not designed from first principles. Perl is those sidewalks in the grass.
Larry WallI'm not too concerned about the future of Perl after me, because I see how these people are interacting with each other and even when I'm not there, they are helping each other and solving each other's problems in a way that I could not do, even if I were there.
Larry Wall