diff --git a/wp-admin/includes/taxonomy.php b/wp-admin/includes/taxonomy.php
index 87fe6e6d67..2953765efb 100644
--- a/wp-admin/includes/taxonomy.php
+++ b/wp-admin/includes/taxonomy.php
@@ -233,6 +233,17 @@ function get_terms_to_edit( $post_id, $taxonomy = 'post_tag' ) {
 		$tag_names[] = $tag->name;
 	$tags_to_edit = join( ',', $tag_names );
 	$tags_to_edit = esc_attr( $tags_to_edit );
+
+	/**
+	 * Filter the comma-separated list of terms available to edit.
+	 *
+	 * @since 2.8.0
+	 *
+	 * @see get_terms_to_edit()
+	 *
+	 * @param array  $tags_to_edit An array of terms.
+	 * @param string $taxonomy     The taxonomy for which to retrieve terms. Default 'post_tag'.
+	 */
 	$tags_to_edit = apply_filters( 'terms_to_edit', $tags_to_edit, $taxonomy );
 
 	return $tags_to_edit;