sub_str_len        52 ext/intl/grapheme/grapheme_util.c void grapheme_substr_ascii(char *str, size_t str_len, int32_t f, int32_t l, char **sub_str, int32_t *sub_str_len)
sub_str_len       106 ext/intl/grapheme/grapheme_util.c     *sub_str_len = l;
sub_str_len        27 ext/intl/grapheme/grapheme_util.h void grapheme_substr_ascii(char *str, size_t str_len, int32_t f, int32_t l, char **sub_str, int32_t *sub_str_len);