in reply to how to fetch 1,2,3, from chapter

How about the fun way :)

> perl -e\ "print join', ',map {\"Chapter $_\"} splice@{[split/\D+/,'Chap 1,2,3'] +},1" Chapter 1, Chapter 2, Chapter 3

Cheers,
R.

Pereant, qui ante nos nostra dixerunt!