function jeherve_custom_sharing_title() {
$post = get_post();
if ( empty( $post ) ) {
return;
} else {
// Create sharing title
$sharing_title = get_the_title( $post->ID );

// Get the tags
$post_tags = get_the_tags( $post->ID );
if ( ! empty( $post_tags ) ) {
// Create list of tags with hashtags in front of them
$hash_tags = ”;
foreach( $post_tags as $tag ) {
$hash_tags .= ‘ #’ . $tag->name;
}
// Add tags to the title
$sharing_title .= $hash_tags;
}

return $sharing_title;
}
}
add_filter( ‘sharing_title’, ‘jeherve_custom_sharing_title’, 10, 3 );