The ruby examples don't behave the same as the python version since they use ARGF in place of stdin. They are also non-idiomatic. Here is a correct, idiomatic Ruby version:

    $stdin.read.split.each do |w|
      puts w if w.match(/ing$/)
    end

or as a single 57 column line:

    $stdin.read.split.each { |w| puts w if w.match(/ing$/) }

we can also use the match operator:

    $stdin.read.split.each { |w| puts w if w =~ /ing$/ }

I'm inclined to assume that the other language examples are also suspect.