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sub each_array (\@;\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@\@) ... return each_arrayref(@_); }
my $ea = each_array(@a, @b, @c); while ( my ($a, $b, $c) = $ea->() ) { .... }