Rosyna wrote:
Oh, >1 was to pass over surrogate pairs, so you don't pass over anything.
rangeOfComposedCharacterSequenceAtIndex: is for more than surrogate pairs. It also applies to base characters that have combining accents following them. For example, the Latin letter 'e' followed by a combining acute-accent is a 2-unichar sequence (or 2 code- points) that should not be separated, otherwise it changes the meaning. A sequence may contain multiple combining accents and diacriticals, so assuming at most 2 is an error.
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