# encoding: Cyrillic
# This file is encoded in Cyrillic.
die "This file is not encoded in Cyrillic.\n" if q{‚ } ne "\x82\xa0";
use Cyrillic;
print "1..2\n";
my $__FILE__ = __FILE__;
my $input = '  My name is Yamada Taro';
my $space = ' ';
my $a = join '_', split $space, $input;
if ($a eq 'My_name_is_Yamada_Taro') {
    print qq{ok - 1 $^X $__FILE__\n};
}
else {
    print qq{not ok - 1 $^X $__FILE__\n};
}
my $b = join '_', split ' ', $input;
if ($b eq 'My_name_is_Yamada_Taro') {
    print qq{ok - 2 $^X $__FILE__\n};
}
else {
    print qq{not ok - 2 $^X $__FILE__\n};
}
__END__
http://d.hatena.ne.jp/syohex/20130613/1371103504
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  a = __My_name_is_Yamada_Taro
  b = My_name_is_Yamada_Taro
Perl 5.18.0‚Å‚ÌŒ‹‰Ê
  a = My_name_is_Yamada_Taro
  b = My_name_is_Yamada_Taro
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