Returns the range of the composed character sequence at a specified index.
- iOS 2.0+
- macOS 10.2+
- tvOS 9.0+
- watchOS 2.0+
- Core Foundation
The string to examine.
The index of the character contained in the composed character sequence. If the index is outside the range of the string (
Nis the length of the string), the behavior is undefined.
The range of the composed character sequence.
A composed character sequence is a series of one or more characters where each is a combining character, zero-width joiner or non-joiner, voiced mark, or enclosing mark, optionally including a base character.