iter_op 301 ext/intl/grapheme/grapheme_util.c int32_t (*iter_op)(UBreakIterator* bi); iter_op 309 ext/intl/grapheme/grapheme_util.c iter_op = ubrk_previous; iter_op 314 ext/intl/grapheme/grapheme_util.c iter_op = ubrk_next; iter_op 322 ext/intl/grapheme/grapheme_util.c pos = iter_op(bi);