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升级gem到1.3.0后，直接建项目都出问题，执行除gem -v命令外的所有gem命令均出现下述问题，rubyforge如是解决，测试生效，备份。

地址：http://rubyforge.org/track...

[#22226] RubyGems 1.3 fails on windows (undefined method `uid' for nil:NilClass)
Date:
2008-09-29 16:30   Priority:
3
Summary:
RubyGems 1.3 fails on windows (undefined method `uid' for nil:NilClass)

Detailed description

Gem 1.3 does not work out of the box on windows.

Here is what happens:

C:\>gem update
Updating installed gems
ERROR:  While executing gem ... (NoMethodError)
   undefined method `uid' for nil:NilClass

The problem is in C:\ruby\lib\ruby\site_ruby\1.8\rubygems.rb, line 713:

"if 0 == File.expand_path(path).index(Gem.user_home) and Etc.getpwuid.uid != File::Stat.new(Gem.user_home).uid
then"

Which should be replaced with:

"if 0 == File.expand_path(path).index(Gem.user_home) and !Gem.win_platform? and Etc.getpwuid.uid
!= File::Stat.new(Gem.user_home).uid then"

Then everything works as expected.