rc_file(ext = IRBRC_EXT) public

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# File lib/irb/init.rb, line 241
  def IRB.rc_file(ext = IRBRC_EXT)
    if !@CONF[:RC_NAME_GENERATOR]
      rc_file_generators do |rcgen|
        @CONF[:RC_NAME_GENERATOR] ||= rcgen
        if File.exist?(rcgen.call(IRBRC_EXT))
          @CONF[:RC_NAME_GENERATOR] = rcgen
          break
        end
      end
    end
    case rc_file = @CONF[:RC_NAME_GENERATOR].call(ext)
    when String
      return rc_file
    else
      IRB.fail IllegalRCNameGenerator
    end
  end
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