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## command you gave ruby -e 'system %(ruby -e "require \"readline\"")' ## wtf is it anyway? >> ^Deuler:rubinius brian$ ruby -e 'p %(ruby -e "require \"readline\"")' "ruby -e \"require \"readline\"\"" ## hmm euler:rubinius brian$ ruby -e 'p %(ruby -e "require \"readline\"")' "ruby -e \"require \"readline\"\"" euler:rubinius brian$ irb >> sytem "ruby -e \"require \"readline\"\"" NoMethodError: undefined method `sytem' for main:Object from (irb):1 >> system "ruby -e \"require \"readline\"\"" ^C-e:1:in `readline': Interrupt from -e:1 => false euler:rubinius brian$ irb >> system 'ruby -e "require \"readline\""' => true >> system %(ruby -e 'require "readline"') => true >> "ruby -e \"require \"readline\"\"" => "ruby -e \"require \"readline\"\"" >> system "ruby -e \"require \"readline\"\"" ^C-e:1:in `readline': Interrupt from -e:1 => false ## is it not a tty? euler:rubinius brian$ ruby -e 'system %(ruby -e "p STDIN.tty?; require \"readline\"")' true ^C-e:1:in `readline': Interrupt from -e:1

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