Better implementation for Ruby 1.8.7 and greater
Better implementation for Ruby 1.8.7 and greater

tlunter/oboe-ruby,appneta/ruby-traceview,appneta/ruby-traceview,boyang-li/oboe-ruby,boyang-li/oboe-ruby,appneta/ruby-traceview,tlunter/oboe-ruby,boyang-li/oboe-ruby,tlunter/oboe-ruby,boyang-li/oboe-ruby,appneta/ruby-traceview,tlunter/oboe-ruby