REG_UNSET        3347 regex.c              if (!REG_UNSET(regstart[last_used_reg]))				\
REG_UNSET        3642 regex.c        	  if (REG_UNSET(regend[mcnt])) {
REG_UNSET        3698 regex.c        	  if (REG_UNSET(d2)) goto fail;
REG_UNSET        3706 regex.c        	  if (REG_UNSET(dend2)) goto fail;