Rubygems不会加载到IRB或Rails控制台中

Question

在OSX上使用RVM,我正在尝试使用ruby gems.但是,一个

require 'rubygems'

在IRB和Rails控制台中返回false.在这里经历类似的问题,我认为这可能与Gem路径与Gem env有关.

MAC-AC028761:Ruby ac028761$ irb
1.9.3-p429 :001 > require 'rubygems'
 => false
1.9.3-p429 :002 > Gem.path
 => ["/Users/ac028761/.rvm/gems/ruby-1.9.3-p429", "/Users/ac028761/.rvm/gems/ruby-1.9.3-p429@global"]
1.9.3-p429 :003 > exit
MAC-AC028761:Ruby ac028761$ gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 1.8.25
  - RUBY VERSION: 1.9.3 (2013-05-15 patchlevel 429) [x86_64-darwin12.3.0]
  - INSTALLATION DIRECTORY: /Users/ac028761/.rvm/gems/ruby-1.9.3-p429
  - RUBY EXECUTABLE: /Users/ac028761/.rvm/rubies/ruby-1.9.3-p429/bin/ruby
  - EXECUTABLE DIRECTORY: /Users/ac028761/.rvm/gems/ruby-1.9.3-p429/bin
  - RUBYGEMS PLATFORMS:
        - ruby
    - x86_64-darwin-12
  - GEM PATHS:
     - /Users/ac028761/.rvm/gems/ruby-1.9.3-p429
     - /Users/ac028761/.rvm/gems/ruby-1.9.3-p429@global
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
  - REMOTE SOURCES:
     - http://rubygems.org/

'gem env'上的'Gem.path'和GEM PATHS都是相同的,所以这不是问题.无法弄清楚如何解决这个问题.

Answer 1

由于rubygems解释器在启动时会自动要求Ruby 1.9 ,因此无需再次要求它.

$ irb
irb> $LOADED_FEATURES.grep /rubygems.rb/
# => ["/usr/lib/ruby/1.9.1/rubygems.rb"]
irb> defined?(Gem)
# => "constant"