Ruby

Bug #19532

Updated by Eregon (Benoit Daloze) over 2 years ago

```ruby 
 irb(main):001:0> "\u{10000}".encode("cesu-8").chop 
 => "\xED\xA0\x80" 
 ``` 
 But it should be `""`. 

 Fix in https://github.com/ruby/ruby/pull/7510

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