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Annotation of researchv10dc/cmd/diff3/diff3.sh, revision 1.1

1.1     ! root        1: e=
        !             2: case $1 in
        !             3: -*)
        !             4:        e=$1
        !             5:        shift;;
        !             6: esac
        !             7: if test $# = 3 -a -f $1 -a -f $2 -a -f $3
        !             8: then
        !             9:        :
        !            10: else
        !            11:        echo usage: diff3 file1 file2 file3 1>&2
        !            12:        exit
        !            13: fi
        !            14: trap "rm -f /tmp/d3[ab]$$" 0 1 2 13 15
        !            15: diff $1 $3 >/tmp/d3a$$
        !            16: diff $2 $3 >/tmp/d3b$$
        !            17: /usr/lib/diff3 $e /tmp/d3[ab]$$ $1 $2 $3

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