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bjfish/gist:a1f3de2969b7d77c080c44170745c009

Created December 23, 2016 19:45
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gistfile1.txt
irb(main):017:0> "\xD8\x00\x30\x42".force_encoding(Encoding::UTF_16BE).scrub("dog".encode(Encoding::UTF_16BE)) { "cat".encode(Encoding::UTF_16BE) }
=> "dog\u3042"
irb(main):018:0> "\xD8\x00\x30\x42".scrub("dog") { "cat" }
=> "cat\u00000B"
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bjfish commented Dec 23, 2016

Also buggy:

irb(main):007:0> "\xD8\x00\x30\x42".force_encoding(Encoding::UTF_16BE).scrub  { |b| puts "bytes:#{b}"; "cat".encode(Encoding::UTF_16BE) }

Yielded values might be suspicious

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