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/usr/share/perl/5.14.2/locale.pm is in perl-base 5.14.2-6ubuntu2.

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The actual contents of the file can be viewed below.

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package locale;

our $VERSION = '1.00';

$locale::hint_bits = 0x4;

sub import {
    $^H |= $locale::hint_bits;
}

sub unimport {
    $^H &= ~$locale::hint_bits;
}

1;