ObjFW  Diff

 * \return The Unicode character at the specified index
 */
- (of_unichar_t)characterAtIndex: (size_t)index;

/**
 * \param str The string to search
 * \return The index of the first occurrence of the string or SIZE_MAX if it
 *	   wasn't found
 *	   was not found
 */
- (size_t)indexOfFirstOccurrenceOfString: (OFString*)str;

/**
 * \param str The string to search
 * \return The index of the last occurrence of the string or SIZE_MAX if it
 *	   wasn't found
 *	   was not found
 */
- (size_t)indexOfLastOccurrenceOfString: (OFString*)str;

/**
 * \param start The index where the substring starts
 * \param end The index where the substring ends.
 *	      This points BEHIND the last character!