OP_SET_OPTION    1200 regcomp.c          r = add_opcode_option(reg, OP_SET_OPTION, prev);
OP_SET_OPTION    1212 regcomp.c          r = add_opcode_option(reg, OP_SET_OPTION, prev);
OP_SET_OPTION    6213 regcomp.c        { OP_SET_OPTION,          "set-option",           ARG_OPTION  },
OP_SET_OPTION    2707 regexec.c          CASE(OP_SET_OPTION)  MOP_IN(OP_SET_OPTION);