WordPress at a glance
filter is not described

wp_generate_tag_cloud filter-hook . WP 2.3.0

Filters the generated output of a tag cloud.

The filter is only evaluated if a true value is passed to the $filter argument in wp_generate_tag_cloud().

Usage

add_filter( 'wp_generate_tag_cloud', 'filter_function_name_2078', 10, 3 );
function filter_function_name_2078( $return, $tags, $args ){
	// filter...

	return $return;
}
$return(array/string)
String containing the generated HTML tag cloud output or an array of tag links if the 'format' argument equals 'array'.
$tags(array)
An array of terms used in the tag cloud.
$args(array)
An array of wp_generate_tag_cloud() arguments.

Where the hook is called

wp_generate_tag_cloud()
wp-includes/category-template.php 976
return apply_filters( 'wp_generate_tag_cloud', $return, $tags, $args );

Where the hook is used (in WP core)

Does not used.