ONIGENC_CASE_FOLD_DEFAULT 5526 ext/mbstring/oniguruma/regcomp.c   r = onig_reg_init(reg, option, ONIGENC_CASE_FOLD_DEFAULT, enc, syntax);
ONIGENC_CASE_FOLD_DEFAULT 5543 ext/mbstring/oniguruma/regcomp.c   r = onig_reg_init(*reg, option, ONIGENC_CASE_FOLD_DEFAULT, enc, syntax);
ONIGENC_CASE_FOLD_DEFAULT  132 ext/mbstring/oniguruma/reggnu.c 		       ONIGENC_CASE_FOLD_DEFAULT,
ONIGENC_CASE_FOLD_DEFAULT  133 ext/mbstring/oniguruma/testu.c   ci.case_fold_flag = ONIGENC_CASE_FOLD_DEFAULT;