KCODE_FIXED      1158 re.c               if (FL_TEST(re, KCODE_FIXED))
KCODE_FIXED      2342 re.c           	re->basic.flags |= KCODE_FIXED;
KCODE_FIXED      2505 re.c               if (FL_TEST(re1, KCODE_FIXED) != FL_TEST(re2, KCODE_FIXED)) return Qfalse;
KCODE_FIXED      2942 re.c               if (RBASIC(re)->flags & KCODE_FIXED) options |= ARG_ENCODING_FIXED;