--- !ruby/object:RI::MethodDescription 
aliases: []

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: def HistorySavingAbility.create_finalizer
- !ruby/struct:SM::Flow::VERB 
  body: "  proc do\n  if num = IRB.conf[:SAVE_HISTORY] and (num = num.to_i) &gt; 0\n    if hf = IRB.conf[:HISTORY_FILE]\n      file = File.expand_path(hf)\n    end\n    file = IRB.rc_file(&quot;_history&quot;) unless file\n    open(file, 'w' ) do |f|\n      hist = HISTORY.to_a\n      f.puts(hist[-num..-1] || hist)\n    end\n  end\n  end\n"
- !ruby/struct:SM::Flow::P 
  body: end
full_name: IRB::HistorySavingAbility::extended
is_singleton: true
name: extended
params: (obj)
visibility: public
