File: rmdotdot

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mpqc 2.3.1-22
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#
eval 'exec perl $0 $*'
    if 0;

$path = shift;
$newpath = rmdd($path);

while ($path ne $newpath) {
    $path = $newpath;
    $newpath = rmdd($path);
}

print $newpath;

sub rmdd {
    my $path = shift;
    $path =~ s/\/[^\/.]*\/\.\.//;
    return $path;
}