>>>>> "G" == GOTO Kentaro <gotoken / math.sci.hokudai.ac.jp> writes: I'm always surprised (I came from perl) :-) G> (lines + "\n").each_with_index{|w,i| break if /z/ =~ w} ^^^^^^^^ Is this equivalent to w =~ /z/ ? Apparently it has 2 differents node (MATCH2 and MATCH3) Guy Decoux