#! /bin/sh
# set -x
# trget: convert files for troff so troff doesn't tizzify
PATH=/bin:/usr/bin
s1="s/\\\\/\\\\e/g"
s2="s/^/\\\\\\&/"
case $# in
[01]) echo usage trget nargs input line1 line2 exitline 1>&2; exit 1
esac
case "$1" in
2) cmd="-e '$s1' -e '$s2'";;
3) cmd="-n -e '$s1' -e '$s2' -e '$3{;p;q;}'" ;;
4) cmd="-n -e '$3,$4{;$s1;$s2;p;}'" ;;
*) cmd="-n -e '$5{;$s1;$s2;p;q;}' -e '$3,$4{;$s1;$s2;p;}'" ;;
esac
(eval sed $cmd) < $2