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On Thu, 21 Jul 2005, Thomas Lord wrote: >You are concerned about sequences containing isolated (unpaired) >surrogates and their implications for string algebra. Your >concerns are entirely reducible to a concern with UTF-16 -- >in all other encodings, there is no ambiguity. I want to know something: what does a string containing an unpaired surrogate mean? What is represented by it? How can anything handle it sensibly in rendering or reading or writing? As far as I can tell, the only use for a string containing an unpaired surrogate is an abuse, where you're using strings to store some other kind of data. So I don't regard it as being at all important, or even appropriate, to allow unpaired surrogates in strings. Bear