From: "Wolfgang Nádasi-Donner" Date: 2008-11-22T01:09:40+09:00 Subject: [ruby-core:20025] Fiber as Superclass - initialize of derived Class will not be executed Hi! The following code... class Hugo < Fiber def initialize(&b) puts "in 'Hugo'" # !!! never executed !!! super(&b) end end h = Hugo.new{42} p h ...results in... >ruby19 myfiber_test.rb # >Exit code: 0 ...which I didn't expect. Wolfgang N�dasi-Donner