%!PS

% begin included library code
% see https://github.com/Firedrake/postscript-libraries/
/deepeq {
    2 dict begin
    /a exch def
    /b exch def
    a type b type eq {
        a type /dicttype eq {
            a length b length eq {
                <<
                    a {
                        pop
                        true
                    } forall
                    b {
                        pop
                        true
                    } forall
                >>
                true exch
                {
                    pop
                    dup a exch known {
                        dup b exch known {
                            dup a exch get exch b exch get deepeq not {
                                pop false
                            } if
                        } {
                            false
                        } ifelse
                    } {
                        false
                    } ifelse
                } forall
            } {
                false
            } ifelse
        } {
            a type dup /arraytype eq exch /stringtype eq or {
                a length b length eq {
                    true
                    0 1 a length 1 sub {
                        dup a exch get exch b exch get deepeq not {
                            pop false
                            exit
                        } if
                    } for
                } {
                    false
                } ifelse
            } {
                a b eq
            } ifelse
        } ifelse
    } {
        false
    } ifelse
    end
} bind def

/test.start {
    print (:) print
    /test.pass 0 def
    /test.count 0 def
} bind def

/test {
    /test.count test.count 1 add def
    {
        /test.pass test.pass 1 add def
    } {
        ( ) print
        test.count (....) cvs print
        (-fail) print
    } ifelse
} bind def

/test.end {
    ( ) print
    test.count 0 gt {
        (Passed ) print
        test.pass (...) cvs print
        (/) print
        test.count (...) cvs print
        ( \() print
        test.pass 100 mul test.count idiv (...) cvs print
        (%\)) print
        (\r\n) print
    } if
} bind def


% end included library code

/rangelist {
    4 dict begin
    /l exch def
    /start l 0 get def
    /prev start def
    [
        l 1 l length 1 sub getinterval {
            /v exch def
            v prev 1 add ne {
                prev start gt {
                    [ start prev ]
                } if
                /start v def
            } if
            /prev v def
        } forall
        prev start gt {
            [ start prev ]
        } if
    ]
    end
} bind def

(rangelist) test.start
[ 1 3 4 5 7 ] rangelist [ [ 3 5 ] ] deepeq test
[ 1 2 3 6 7 9 ] rangelist [ [ 1 3 ] [ 6 7 ] ] deepeq test
[ 0 1 2 4 5 6 8 9 ] rangelist [ [ 0 2 ] [ 4 6 ] [ 8 9 ] ] deepeq test
test.end