OP_POP_STOP_BT   1341 ext/mbstring/oniguruma/regcomp.c       r = add_opcode(reg, OP_POP_STOP_BT);
OP_POP_STOP_BT   5521 ext/mbstring/oniguruma/regcomp.c   { OP_POP_STOP_BT,          "pop-stop-bt",          ARG_NON },
OP_POP_STOP_BT   2801 ext/mbstring/oniguruma/regexec.c     case OP_POP_STOP_BT:  STAT_OP_IN(OP_POP_STOP_BT);