PERLVAR(Isv_no, SV)
PERLVAR(Isv_yes, SV)
-PERLVAR(Ilex_state, U8) /* next token is determined */
PERLVAR(Ierror_count, U8) /* how many errors so far, max 10 */
PERLVARI(Icv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
-/* Space for one more U8 here without increasing the structure size */
+/* Space for two more U8 here without increasing the structure size */
PERLVAR(Imulti_end, I32) /* last line of multi-line string */