# File lib/debug.rb, line 126
  def debug_eval(str, binding)
    begin
      val = eval(str, binding)
    rescue StandardError, ScriptError => e
      at = eval("caller(1)", binding)
      stdout.printf "%s:%s\n", at.shift, e.to_s.sub(/\(eval\):1:(in `.*?':)?/, '')
      for i in at
        stdout.printf "\tfrom %s\n", i
      end
      throw :debug_error
    end
  end