您不能为ask添加别名，因为答案将直接与limited_to中提供的选项列表匹配。Source
如果你真的想要这个功能，你最好的选择是跳过limited_options，而是在事实发生后检查答案并相应地做出回应，例如。

class MyCLI  < Thor
  desc 'do_thing', 'does a thing'
  def do_thing      
    answer = ask("Is this correct? (Y)es/(N)o/(M)aybe:", default: 'Y')
    unless %w(y n m yes no maybe).include?(answer.downcase)
      puts "[#{answer}] is an invalid option. Please try again."
      send(__method__)
    end 
    puts answer
  end
end

字符串
示例如下：

Is this correct? (Y)es/(N)o/(M)aybe: (Y) Test 
[Test] is an invalid option. Please try again.
Is this correct? (Y)es/(N)o/(M)aybe: (Y) Yes 
Yes

型
如果你想使用内置的有限的选项，那么你可以使用这样的东西，但在我看来，这是没有吸引力时，在CLI中表示：

class CLI < Thor
  desc 'do_thing', 'does a thing'
  def do_thing      
    answer = ask("Is this correct? (Y)es/(N)o/(M)aybe", limited_to: %w{y n m}, default: 'y', case_insensitive: true)
  end
end

型
它将输出为：

Is this correct? (Y)es/(N)o/(M)aybe [y,n,m] (y)

型