/gems/htmlentities-4.3.2/lib/htmlentities/mappings/expanded.rb:465: warning: duplicated key at line 466 ignored: "inodot"
/gems/ruby-2.2.0/gems/fog-core-1.25.0/lib/fog/core/collection.rb:144: warning: circular argument reference - filters
/gems/htmlentities-4.3.2/lib/htmlentities/mappi
阅读背景：
升级到ruby 2.2.0后的警告
来源：互联网
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