+ def set_initial_username(requested: false)
+ if !requested.is_a?(String) || requested.empty?
+ email_parts = email.partition("@")
+ local_parts = email_parts.first.partition("+")
+ if email_parts.any?(&:empty?)
+ return
+ elsif not local_parts.first.empty?
+ requested = local_parts.first
+ else
+ requested = email_parts.first
+ end
+ end
+ requested.sub!(/^[^A-Za-z]+/, "")
+ requested.gsub!(/[^A-Za-z0-9]/, "")
+ unless requested.empty?
+ self.username = find_usable_username_from(requested)
+ end
+ end
+