ruby - 为什么当命令执行某些错误时，我的 pry-byebug 包会给出如此多的输出？

Question

我最近安装了 gem pry-byebug ，当我注意到它至少需要 Ruby 2.4 版才能运行时。所以我使用 rvm 更新了我的 Ruby ，然后安装 gems pry和 pry-byebug .一切正常。我开始编写一些代码并使用 binding.pry 设置一些断点.

但是现在当我调试时，我必须处理表面上是 pry-byebug 代码库的大量输出。 ，这使得我的调试过程更加困惑，因为我必须通过所有这些冗余输出来确定我的问题所在。

例如，假设我设置了 binding.pry在我实例化一些对象的代码部分中的断点。

casting1= {'movie_name'=> 'The Room, 'star_name'=> 'Tommy Wiseau', 'star_fee'=>20000}
casting2= {'movie_name'=> 'Come and See', 'star_name'=> 'Aleksei Kravchenko', 'star_fee'=>1000}
casting_object1= Casting.new(casting1)
casting_object2= Casting.new(casting2)

binding.pry()

假设我开始查看对象 casting_object1和 casting_object2为了弄清楚他们的方法是否正确编写，并且我不小心输入了一些小错误，例如调用不存在的对象/函数。我得到这种输出:

[1] pry(main)> casting_object1
[2] pry(main)> casting_object5

Traceback (most recent call last):
        27: from console.rb:64:in `<main>'
        26: from /Users/bob/.rvm/gems/ruby-head/gems/byebug-11.1.1/lib/byebug/context.rb:98:in `at_line'
        25: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:65:in `at_line'
        24: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:113:in `resume_pry'
        23: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:29:in `run'
        22: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:29:in `catch'
        21: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:30:in `block in run'
        20: from /Users/bob/.rvm/gems/ruby-head/gems/byebug-11.1.1/lib/byebug/helpers/eval.rb:94:in `allowing_other_threads'
        19: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:30:in `block (2 levels) in run'
        18: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:117:in `block in resume_pry'
        17: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_class.rb:200:in `start'
        16: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/repl.rb:13:in `start'
        15: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/repl.rb:38:in `start'
        14: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/input_lock.rb:77:in `with_ownership'
        13: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/input_lock.rb:59:in `__with_ownership'
        12: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/repl.rb:38:in `block in start'
        11: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/repl.rb:67:in `repl'
        10: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/repl.rb:67:in `loop'
         9: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/repl.rb:77:in `block in repl'
         8: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:272:in `eval'
         7: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:272:in `catch'
         6: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:273:in `block in eval'
         5: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:273:in `catch'
         4: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:274:in `block (2 levels) in eval'
         3: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:355:in `handle_line'
         2: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:387:in `evaluate_ruby'
         1: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:387:in `eval'
(pry):3:in `<main>': undefined local variable or method `casting' for main:Object (NameError)
Did you mean?  casting_object2
               casting_object1
        27: from console.rb:64:in `<main>'
        26: from /Users/bob/.rvm/gems/ruby-head/gems/byebug-11.1.1/lib/byebug/context.rb:98:in `at_line'
        25: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:65:in `at_line'
        24: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:113:in `resume_pry'
        23: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:29:in `run'
        22: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:29:in `catch'
        21: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:30:in `block in run'
        20: from /Users/bob/.rvm/gems/ruby-head/gems/byebug-11.1.1/lib/byebug/helpers/eval.rb:94:in `allowing_other_threads'
        19: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:30:in `block (2 levels) in run'
        18: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:117:in `block in resume_pry'
        17: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_class.rb:200:in `start'
        16: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/repl.rb:13:in `start'
        15: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/repl.rb:38:in `start'
        14: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/input_lock.rb:77:in `with_ownership'
        13: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/input_lock.rb:59:in `__with_ownership'
        12: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/repl.rb:38:in `block in start'
        11: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/repl.rb:67:in `repl'
        10: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/repl.rb:67:in `loop'
         9: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/repl.rb:77:in `block in repl'
         8: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:272:in `eval'
         7: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:272:in `catch'
         6: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:273:in `block in eval'
         5: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:273:in `catch'
         4: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:274:in `block (2 levels) in eval'
         3: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:349:in `handle_line'
         2: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_instance.rb:356:in `rescue in handle_line'
         1: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/exceptions.rb:16:in `==='
/Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/exceptions.rb:28:in `===': undefined method `>' for nil:NilClass (NoMethodError)
        12: from console.rb:64:in `<main>'
        11: from /Users/bob/.rvm/gems/ruby-head/gems/byebug-11.1.1/lib/byebug/context.rb:98:in `at_line'
        10: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:65:in `at_line'
         9: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:113:in `resume_pry'
         8: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:29:in `run'
         7: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:29:in `catch'
         6: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:30:in `block in run'
         5: from /Users/bob/.rvm/gems/ruby-head/gems/byebug-11.1.1/lib/byebug/helpers/eval.rb:94:in `allowing_other_threads'
         4: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:30:in `block (2 levels) in run'
         3: from /Users/bob/.rvm/gems/ruby-head/gems/pry-byebug-3.8.0/lib/byebug/processors/pry_processor.rb:117:in `block in resume_pry'
         2: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_class.rb:169:in `start'
         1: from /Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/pry_class.rb:201:in `rescue in start'
/Users/bob/.rvm/gems/ruby-head/gems/pry-0.12.2/lib/pry/exceptions.rb:28:in `===': undefined method `>' for nil:NilClass (NoMethodError)

无论引发什么样的错误，我总是得到这种似乎是指 pry 代码库中的代码的输出。或 pry-byebug gem 。虽然这不是一个主要问题(因为我仍然可以在 pry 中设置断点和操作对象)，但有太多多余的输出，以至于查明错误的过程变得不是特别容易或明确，尤其是在终端设置中。我试图通过卸载并重新安装 gems 来自己修正这个问题 pry和 pry-byebug ，并且还尝试安装 pry 的以前版本和 pry-byebug为了让它工作。我试图在谷歌上搜索这个问题，但遗憾的是我对术语不够熟悉，无法确定问题的实际情况。

自从我用 rvm 更新我的 Ruby 以来，这个问题一直在发生。我不想回到旧版本的 Ruby，因为我在代码中使用的一些 gem 需要最新版本。任何人都可以给我任何反馈来解释为什么会发生这种情况，并且可能，我该如何解决？我正在使用 macOS Mojave v10.14.6，并使用 Ruby v2.7.0-preview1

更新

于是我去了 pry-byebug的github仓库我发现其他一些用户遇到了和我一样的问题。

https://github.com/deivid-rodriguez/pry-byebug/issues/138

https://github.com/deivid-rodriguez/pry-byebug/issues/110

遗憾的是，这两个问题仍未解决，但一位用户确实说有一种方法可以使用函数 print_traceback 来“猴子修补”这个问题。 .定位后 print_traceback where.rb 中的函数 bye-bug 的文件gem，我试图实现这个猴子补丁。可悲的是它对我不起作用。

Answer 1

所以我最近只是使用 rvm 下载并将我的默认 Ruby 版本设置为 2.6.5。详细输出现已完全停止。