Fix for passing the arguments in the get_avatar filter

I think that this is a fix for passing extra arguments that should be used by the plugin. For example, users can use the get_avatar method and include extra CSS classes $args parameter in the filter since the 4.2.0 version.

I wrote a fix for this, by changing the number of passed arguments based on the WordPress version, in the wp-first-letter-avatar.php file, I made the following edits:

Lines 104-105, __construct, now should be:

// add filter to get_avatar:
global $wp_version;

if (version_compare($wp_version, '4.2.0', '<')) {
	// The $args started only started to be passed in WordPress 4.2.0
	add_filter('get_avatar', array($this, 'set_comment_avatar'), $this->filter_priority, 5);
}
else {
	add_filter('get_avatar', array($this, 'set_comment_avatar'), $this->filter_priority, 6);
}

The admin_bar_menu_action method now looks like:

public function admin_bar_menu_action(){ // change avatar in the userbar at the top
	global $wp_version;
	
	if (version_compare($wp_version, '4.2.0', '<')) {
		// The $args started only started to be passed in WordPress 4.2.0
		add_filter('get_avatar', array($this, 'set_userbar_avatar'), $this->filter_priority, 5);
	}
	else {
		add_filter('get_avatar', array($this, 'set_userbar_avatar'), $this->filter_priority, 6);
	}

}

Also, set_userbar_avatar:

public function set_comment_avatar($avatar, $id_or_email, $size = '96', $default = '', $alt = '', $args = array()){
	.
	.
	.

	$avatar_output = $this->set_avatar($name, $email, $size, $alt, $args);

	return $avatar_output;

}

The set_avatar method now should be updated as well:

private function set_avatar($name, $email, $size, $alt = '', $args = array()){
	.
	.
	.
	
	$avatar_img_output = $this->generate_avatar_img_tag($avatar_uri, $size, $alt, $args); // get final <img /> tag for the avatar/gravatar

	return $avatar_img_output;

}

And the generate_avatar_img_tag now should use the extra CSS class, if available

private function generate_avatar_img_tag($avatar_uri, $size, $alt = '', $args = array()){
	// Default classes
	$css_classes = 'avatar avatar-' . $size . ' photo';
	
	// Append plugin class
	$css_classes .= ' wpfla';
	
	// prepare extra classes for <img> tag depending on plugin settings:
	if ($this->round_avatars == true){
		$css_classes .= ' round-avatars';
	}
	
	// Append extra classes
	if (array_key_exists('class', $args)) {
		if (is_array($args['class'])) {
			$css_classes .= ' ' . implode(' ', $args['class']);
		}
		else {
			$css_classes .= ' ' . $args['class'];
		}
	}

	$output_data = "<img alt='{$alt}' src='{$avatar_uri}' class='{$css_classes}' width='{$size}' height='{$size}' />";

	// return the complete <img> tag:
	return $output_data;

}

Is it possible to include this update on the next version of the plugin?

Thanks