Automatically add this attribute to the gallery shortcode

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When inserting a gallery it adds the following shortcode:

I would like it to automatically add link=”file” as the last attribute, whenever a shortcode is added. Like so:
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2 comments

  1. You can hijack the shortcode handler and set the attribute to a value of your choice. Then call the native callback for this shortcode.

    add_shortcode( 'gallery', 'file_gallery_shortcode' );

function file_gallery_shortcode( $atts )
{
    $atts['link'] = 'file';
    return gallery_shortcode( $atts );
}

  2. There is a new shortcode_atts_{$shortcode} filter in WordPress 3.6 according to Mark Jaquith.

    You could use the shortcode_atts_gallery filter to force the link='file' attribute:

    add_filter('shortcode_atts_gallery','overwrite_gallery_atts_wpse_95965',10,3);
function overwrite_gallery_atts_wpse_95965($out, $pairs, $atts){
    // force the link='file' gallery shortcode attribute:
    $out['link']='file'; 
    return $out;
}

    when you have upgraded to 3.6.

    You can check it out in /wp-includes/shortcodes.php from the Core-Trac-Trunk:

    http://core.trac.wordpress.org/browser/trunk/wp-includes/shortcodes.php#L316