Use another example than UTF-8 for StringIO#external_encoding
Use another example than UTF-8 for StringIO#external_encoding

ruby/spec,sgarciac/spec,kachick/rubyspec,sgarciac/spec,ruby/rubyspec,kachick/rubyspec,nobu/rubyspec,nobu/rubyspec,ruby/rubyspec,eregon/rubyspec,eregon/rubyspec,nobu/rubyspec,eregon/rubyspec,sgarciac/spec,kachick/rubyspec,ruby/spec,ruby/spec