模块 IRB::History - irb：Ruby 标准库文档

history_file() 点击切换源码

当 HOME 和 XDG_CONFIG_HOME 不可用时可能为 nil。

# File irb/history.rb, line 20
def history_file
  if (history_file = IRB.conf[:HISTORY_FILE])
    File.expand_path(history_file)
  else
    IRB.rc_file("_history")
  end
end

infinite?() 点击切换源码

# File irb/history.rb, line 15
def infinite?
  save_history.negative?
end

save_history() 点击切换源码

IRB.conf[:HISTORY_FILE] 的整数表示。

# File irb/history.rb, line 7
def save_history
  IRB.conf[:SAVE_HISTORY].to_i
end

save_history?() 点击切换源码

# File irb/history.rb, line 11
def save_history?
  !save_history.zero?
end