return nil on flush
return nil on flush
astroboxio/iruby,minrk/iruby,SciRuby/iruby,minrk/iruby,zalt50/iruby,SciRuby/iruby,Rambatino/pi-ruby,SciRuby/iruby,mijoharas/iruby,zalt50/iruby,zalt50/iruby,astroboxio/iruby,jjn2009/iruby,minrk/iruby,jjn2009/iruby,hainesr/iruby,domitry/iruby,SciRuby/iruby,mijoharas/iruby,domitry/iruby,zalt50/iruby,Sharpie/iruby,hainesr/iruby,Rambatino/pi-ruby,Sharpie/iruby