make sure stdout is flushed when working with signals
make sure stdout is flushed when working with signals

tmornini/rake,utilum/rake,hsbt/rake,askl56/rake,jaustinhughey/rake,bentley/rake,codedogfish/rake,esasse/rake,envato/rake,Vanzct/rake,ruby/rake,envato/rake,ipmobiletech/rake,hsbt/rake,88rabbit/rake,zzak/rake,ruby/rake,taiganakagawa/rake,pjump/rake