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我发现使用require加载类似Sinatra web框架的问题没有问题，但我似乎无法使用require加载我自己的自定义代码？Ruby自定义代码调用失败
比如我有两个文件：
- test1.rb
- test2.rb
'test1.rb' 的内容是：
#!/usr/bin/env ruby
require 'test2'
的'test2.rb'的内容是：
class String
def vowels
self.scan(/[aeiou]/i)
end
end
如果我尝试和运行ruby test1.rb然后我得到以下错误...
/Users/<username>/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- test2 (LoadError)
from /Users/<username>/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from test1.rb:3:in `<main>'
，如果我试图用shotgun宝石来加载网络服务器，然后我发现我得到一个不同的，但更详细的堆栈跟踪的错误...
Boot Error
Something went wrong while loading test1.rb
LoadError: cannot load such file -- test2
/Users/<username>/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/Users/<username>/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/Users/<username>/Dropbox/Library/Ruby/Passage/test1.rb:3:in `<top (required)>'
/Users/<username>/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/Users/<username>/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/shotgun-0.9/lib/shotgun/loader.rb:114:in `inner_app'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/shotgun-0.9/lib/shotgun/loader.rb:102:in `assemble_app'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/shotgun-0.9/lib/shotgun/loader.rb:86:in `proceed_as_child'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/shotgun-0.9/lib/shotgun/loader.rb:31:in `call!'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/shotgun-0.9/lib/shotgun/loader.rb:18:in `call'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/shotgun-0.9/lib/shotgun/favicon.rb:12:in `call'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/shotgun-0.9/lib/shotgun/static.rb:14:in `call'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/rack-1.4.1/lib/rack/builder.rb:134:in `call'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/thin-1.3.1/lib/thin/connection.rb:80:in `block in pre_process'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/thin-1.3.1/lib/thin/connection.rb:78:in `catch'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/thin-1.3.1/lib/thin/connection.rb:78:in `pre_process'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/thin-1.3.1/lib/thin/connection.rb:53:in `process'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/thin-1.3.1/lib/thin/connection.rb:38:in `receive_data'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run_machine'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/thin-1.3.1/lib/thin/backends/base.rb:61:in `start'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/thin-1.3.1/lib/thin/server.rb:159:in `start'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/rack-1.4.1/lib/rack/handler/thin.rb:13:in `run'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/gems/shotgun-0.9/bin/shotgun:156:in `<top (required)>'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/bin/shotgun:19:in `load'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/bin/shotgun:19:in `<main>'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/bin/ruby_noexec_wrapper:14:in `eval'
/Users/<username>/.rvm/gems/ruby-1.9.3-p125/bin/ruby_noexec_wrapper:14:in `<main>'
我不确定是什么问题？
请任何帮助表示赞赏。
谢谢。