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Annotation of researchv10dc/vol2/grap/trget, revision 1.1

1.1     ! root        1: #! /bin/sh
        !             2: # set -x
        !             3: # trget: convert files for troff so troff doesn't tizzify
        !             4: PATH=/bin:/usr/bin
        !             5: s1="s/\\\\/\\\\e/g"
        !             6: s2="s/^/\\\\\\&/"
        !             7: case $# in
        !             8: [01]) echo usage trget nargs input line1 line2 exitline 1>&2; exit 1
        !             9: esac
        !            10: case "$1" in
        !            11: 2)     cmd="-e '$s1' -e '$s2'";;
        !            12: 3)     cmd="-n -e '$s1' -e '$s2' -e '$3{;p;q;}'" ;;
        !            13: 4)     cmd="-n -e '$3,$4{;$s1;$s2;p;}'" ;;
        !            14: *)     cmd="-n -e '$5{;$s1;$s2;p;q;}' -e '$3,$4{;$s1;$s2;p;}'" ;;
        !            15: esac
        !            16: (eval sed $cmd) < $2

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