gistfile1.rb

   # ==== Parameters
    # io<#path>:: An IO containing the full path of the template.
    # name<String>:: The name of the method that will be created.
    # locals<Array[Symbol]>:: A list of locals to assign from the args passed into the compiled template.
    # mod<Module>:: The module that the compiled method will be placed into.
    #
    # :api: private
    def self.compile_template(io, name, locals, mod)
      template = ::Erubis::BlockAwareEruby.new(io.read)
      _old_verbose, $VERBOSE = $VERBOSE, nil
      assigns = locals.inject([]) do |assigns, local|
        assigns << "#{local} = _locals[#{local.inspect}]"
      end.join(";")
      
      code = "def #{name}(_locals={}); #{assigns}; #{template.src}; end"
      mod.module_eval code, File.expand_path(io.path)
      $VERBOSE = _old_verbose
      
      name
    end