plural=0 is evaluated to FALSE

I am translating Drupal to Turkish with my friends. Today I tried our translation on a fresh installation and Drupal said that "cannot parse plural formula".

My initial plural formula is: Plural-Forms: nplural=1; plural=0;

This formula gives an error while importing and plural translations don't work. For example: 1 min => 1 dakika but 8 min => 8 min(this is wrong) instead of 8 dakika(this is the right one).

I changed my plural formula to Plural-Forms: nplural=1; plural=(0); but this also doesn't work.

I changed formula to Plural-Forms: nplural=1; plural=( n != n); and now Drupal doesn't give error about plural formula and my plural translations work.

locale.inc:792

  // Get PHP version of the plural formula
  $plural = _locale_import_parse_arithmetic($plural);

  if ($plural) {                                
    return array($nplurals, $plural);
  }
  else {
    drupal_set_message(t('The translation file %filename contains an error: the plural formula could not be parsed.', array('%filename' => theme('placeholder', $filename))), 'error');
    return FALSE;
  }

This may be the cause of the error. Drupal only checks if $plural is non-zero but I must set it to '0' which evaluates to FALSE for PHP. I think it can be solved by checking if (FALSE === $plural) instead of if ($plural).

I don't have access to CVS now to make a patch.
Don't try to add Turkish language now because it contains some errors. Or replace <em>Plural-Forms: nplural=INTEGER; plural=EXPRESSION;</em> to <em>Plural-Forms: nplural=1; plural=0;</em>