[j-nsp] Back-reference in JunOS regular expressions

[Jonathan Lassoff]

Jeff, Michael -- these are both totally reasonable cases I didn't even
consider. The Juniper clue wiki article is a really good example as to
why.

I wonder why it's not implemented. It does seem relatively easy
considering the fact that there is already some support for regular
expressions anyway.
I guess a large-enough customer hasn't made an ultimatum for Juniper yet. :p

--j