iphone - How to use CTTypesetterSuggestClusterBreak in Core Text -

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i having trouble in using cttypesettersuggestclusterbreak function of cttypesetterref class. want use method closest word boundry near index. having difficult in implementationof method, i.e how , method must used. have been banging head on no success yet. if can me in using method greatful.

thanx in advance

i'm not sure coretext appropriate task; sounds should investigate cfstringtokenizer instead.


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