How to remove title tag with this filter

Question

GeneratePress, which im using as theme, has the following filter for arhive page post images. It adds a title tag to the a element which im trying to remove.

I'm a bit unsure how to go about this filter, since i have only tried filter that are added to a variable after all functions are run.

The original function:

echo apply_filters( 'generate_featured_image_output', sprintf(
            '<div class="post-image">
                <a href="%1$s" title="%2$s">
                    %3$s
                </a>
            </div>',
            esc_url( get_permalink() ),
            the_title_attribute( 'echo=0' ),
            get_the_post_thumbnail( get_the_ID(), apply_filters( 'generate_page_header_default_size', 'full' ), array('itemprop' => 'image') )
        ));

What i have tried:

add_filter( 'generate_featured_image_output' , 'remove_image_title_archive');
function remove_image_title_archive($text){

        $text = preg_replace('/(title=".*")/', '', $text);
        return $text;


}

Which does nothing.

I have also tried:

add_filter( 'generate_featured_image_output' , 'remove_image_title_archive');
function remove_image_title_archive($text){
    return sprintf(
        '<div class="post-image">
            <a href="%1$s">
                %2$s
            </a>
        </div>',
        esc_url( get_permalink() ),
        get_the_post_thumbnail( get_the_ID(), apply_filters( 'generate_page_header_default_size', 'full' ), array('itemprop' => 'image') )
    );
}

I have also tried setting the priority higher on both, but no effect.

Whats the procedure when filtering a sprintf function like this one?

Answer 1

This should have worked (the part of the sprintf at least as I don't have access to the original code.

Try give a higher number:

add_filter( 'generate_featured_image_output' , 'remove_image_title_archive',100);

Another solution will be removing the filter before applying yours, like this:

remove_filter( 'generate_featured_image_output', 'remove_image_title_archive',10 );

Important: To remove a hook, the $function_to_remove and $priority arguments must match when the hook was added. This goes for both filters and actions. No warning will be given on removal failure.