rubygems - 当直接调用.rb文件时，Bundler起作用；通过其他Ruby脚本中的exec调用时，Bundler失败

我需要从另一个使用Bundler + Gemfile的ruby script1.rb调用使用Bundler + Gemfile的ruby script2.rb。

我注意到script2.rb可用的Gems仅是script1.rb的。如果script1.rb调用script2.rb，则无法使用script2.rb独有的gem。当直接从bash shell调用script2.rb时，一切都可用。

我确保这不是一个ENV问题，我在两个文件中都使用了diff和辅助代码来比较它们，并进行了一些修改以使它们匹配。

File.open("script2_env.txt", 'wb') {|f| f.write(JSON.pretty_generate(ENV.to_h))}

为了确保这不是$ LOAD_PATH问题，我还确保它们匹配。

在script1.rb调用的script2.rb中，我添加了以下行以匹配script1的$ LOAD_PATH：

$:.unshift "/usr/local/Cellar/rbenv/1.1.2/rbenv.d/exec/gem-rehash"

我对问题的理解是，从script1.rb调用script2.rb时，Bundler无法正确初始化。

eval "$(rbenv init -)"

就像我的bash_profile中的一样

script1 / script1.rb：

#!/usr/bin/env ruby
cwd=Dir.pwd ; ourDir=File.dirname(__FILE__) ; Dir.chdir(ourDir)
require 'bundler' ;  Bundler.setup
require "awesome_print"
ap "in script1, we have awesome_print in our GemFile"
exec("/Users/charbon/wip/script2/script2.rb")

script1 / Gemfile

source 'https://rubygems.org'
gem 'awesome_print'

script2.rb：

#!/usr/bin/env ruby
puts "we are now in script2.rb"
$:.unshift "/usr/local/Cellar/rbenv/1.1.2/rbenv.d/exec/gem-rehash"
cwd=Dir.pwd ; ourDir=File.dirname(__FILE__) ; Dir.chdir(ourDir)

#make ENV match to script1 ENV
ENV.delete('BUNDLER_ORIG_GEM_PATH') 
ENV['BUNDLE_GEMFILE']=ourDir+"/Gemfile"
ENV['RBENV_DIR']=ourDir

require 'bundler' ;
Bundler.setup
require 'awesome_print'

ap "in script2, we also have awesome_print in our GemFile"
puts "but we also have colored, which is not available, this throws an erro"
require "colored"

script2 / Gemfile

source 'https://rubygems.org'
gem 'awesome_print'
gem 'colored'

结果是

 /Users/charbon/wip/script1/script1.rb 
"in script1, we have awesome_print in our GemFile"
we are now in script2.rb
ourDir is /Users/charbon/wip/script2
"in script2, we also have awesome_print in our GemFile"
but we also have colored, which is not available, this throws an error
/Users/charbon/wip/script2/script2.rb:19:in `require': cannot load such file -- colored (LoadError)
    from /Users/charbon/wip/script2/script2.rb:19:in `<main>'

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