Doc of [UITextInput offsetFromPosition:toPosition:] is wrong

Originator:an00na
Number:rdar://16912444 Date Originated:14-May-2014
Status:Closed Resolved:Yes
Product:Documentation Product Version:
Classification:Serious Bug Reproducible:
 
Summary:
Doc of [UITextInput offsetFromPosition:toPosition:] says:
Return the number of visible characters between one text position and another text position.

But actually, it returns the number of UTF-16 characters. For example, for a visible character(\U0001F604) composed of a surrogate pair, it returns 2 instead of 1.

Steps to Reproduce:
1. Launch sample app(http://cl.ly/412O182t3d1l).
2. Read console logs.

Comments


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