Path: utzoo!attcan!uunet!mcsun!cernvax!chx400!ethz!neptune!iiic.ethz.ch!reberhar
From: reberhar@iiic.ethz.ch (Rolf Georg Eberhardt)
Newsgroups: comp.editors
Subject: sed address arithmetic
Message-ID: <8738@neptune.inf.ethz.ch>
Date: 20 Sep 90 12:57:01 GMT
Sender: news@neptune.inf.ethz.ch
Distribution: comp
Lines: 13

Hello Netlanders

Is it possible to do address arithmetic in sed? I would like to do something like

/searchpattern/+3 s/^/<AA>/

ie. inserting the tag <AA> three lines under all the lines containing 
searchpattern.


Thanks.

-- rolf