grapheme_split_string   91 ext/intl/grapheme/grapheme_string.c 	ret_len = grapheme_split_string(ustring, ustring_len, NULL, 0 );
grapheme_split_string   33 ext/intl/grapheme/grapheme_util.h int32_t grapheme_split_string(const UChar *text, int32_t text_length, int boundary_array[], int boundary_array_len );