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  1. or download this
    use IO::Prompt::Hooked;

...
  message  => 'Do you wish to update? (Y/N):',
  validate => qr/^[YN]$/i,
);
  2. or download this
    my $choice = prompt(
  message  => 'Do you wish to update? (Y/N):',
  validate => qr/^[YN]$/i,
  error    => "Response must be 'Y' or 'N'.\n\n",
);
  3. or download this
    my $choice = prompt(
  message  => 'Do you wish to update? (Y/N):',
...
  validate => qr/^[YN]$/i,
  error    => "Response must be 'Y' or 'N'.\n\n",
);