Some of a new sandbox

public/tryruby_sandbox.rb

@@ -0,0 +1,53 @@
+class FakeStdout
+  attr_accessor :calls
+  def initialize
+    @calls = []
+    @string = ""
+  end
+
+  def method_missing(method, *args)
+    @calls << {method: method, args: args}
+  end
+
+  def write(str)
+    @string += str
+
+    method_missing(:write, strs)
+  end
+
+  def to_s
+    return "" if @calls.empty?
+    @string
+    # @calls.join("\n")
+  end
+end
+
+class Object
+  attr_reader :tryruby_line, :tryruby_past_commands, :tryruby_current_includes
+  @tryruby_line, @tryruby_past_commands, @tryruby_current_includes = ARGV
+end
+ARGV = []
+
+poem = <<POEM_EOF
+blah blah blah
+POEM_EOF
+
+def require(path)
+  result = ''
+  path = path.sub(/\.rb$/, "")
+  return false unless ['popup'].include?(path)
+  if Object.tryruby_current_includes.include?(path)
+
+  else
+    Thread.new do
+      result = File.read(path)
+      Object.tryruby_current_includes << path
+    end
+  end
+  true
+end
+
+$stdout = FakeStdout.new
+
+eval( <<EOF
+$SAFE=3