The range U+FDD0..U+FDEF is reserved for internal use by applications. | Hacker News

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		gizmo686 on Aug 10, 2015 \| parent \| context \| favorite \| on: Show HN: Big List of Naughty Strings for testing u... The range U+FDD0..U+FDEF is reserved for internal use by applications.

duskwuff on Aug 10, 2015 [–]

It's supposed to be reserved for applications. In practice... you may see them in the wild anyway. So it's important that they show up in test vectors!

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