Re: ICU4C Proposal: Modified uset_applyPattern

The committee decided to modify the API again because the previous proposal
was not following C idioms.
/**
 * Modifies the set to represent the set specified by the given
 * pattern. See the UnicodeSet class description for the syntax of
 * the pattern language.
 * @param set               The set to which the pattern is to be applied.
 * @param pattern           A pointer to UChar string specifying what
characters are in the set.
 *                          The character at pattern[0] must be a '['.
 * @param patternLength     The length of the UChar string. -1 if null
terminated.
 * @param options           A bitmask for options to apply to the pattern.
 *                          Valid options are USET_IGNORE_SPACE and
USET_CASE_INSENSITIVE.
 * @param status            Returns <code>U_ILLEGAL_ARGUMENT_ERROR</code> if
the pattern
 *                          contains a syntax error.
 * @return                  Upon successful parse, the value is either
 *                          the index of the character after the closing ']'
 *                          of the parsed pattern.
 *                          Upon unsuccessful parse the index of the error
is returned.
 *
 * @draft ICU 2.8
 */
U_CAPI int32_t U_EXPORT2
uset_applyPattern(USet *set,
                  const UChar *pattern, int32_t patternLength,
                  uint32_t options,
                  UErrorCode *status);