small patch to picture module, to add captions from title field

hello maintainers of the picture module-
and thanks for your brilliant work.

here is just a small patch i made, to add captions from the image title field, if its used.

in picture.module [7.x-1.x-dev] change this-

    $output[] = '<noscript>' . theme('image_style', $variables) . '</noscript>';
    $output[] = '</span>';
    return implode("\n", $output);

to this-

    $output[] = '<noscript>' . theme('image_style', $variables) . '</noscript>';
    $output[] = '</span>';

    if (!empty($variables['title'])) {
      $output[] = '<span class="image-caption-title">' . $variables['title'] . '</span>';
    }

    return implode("\n", $output);

of course you can use a div instead of a span, for the caption element. you can also use css to selectively toggle the display of captions on/off easily thru the theme- for various content types, or entity view modes, or teasers- or anything you can style with css.

for example-

.image-caption-title {
  display: none;
}

.view-mode-full .image-caption-title {
  display: block;
}

.view-mode-full .field-type-entityreference .image-caption-title {
  display: none;
}

.view-mode-full .view .image-caption-title {
  display: none;
}

i found this an easy way both to add or not add captions, for any any given image- which always gets an alt field filled out- but then if you add the title field too, the caption will be displayed nicely. the additional css gives fine-grained control however you might want.