Warning: Variable Is No Longer Effective

gem, soap4r, work 
gems/soap4r-1.5.8/lib/xsd/charset.rb:13: warning: variable $KCODE is no longer effective

在stackoverflow上找到了解决这一问题的方法：

http://stackoverflow.com/questions/5754965/ruby-soap4r-wsdl2ruby-rb-errors

即，修改文件：gems/soap4r-1.5.8/lib/xsd/xmlparser.rb的第66行，

c.downcase == name

为

c.to_s.downcase == name

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