132     char *cp, **pp;  in res_vinit()  local
170         (cp = strchr(buf, '.')) != NULL)  in res_vinit()
171         strcpy(statp->defdname, cp + 1);  in res_vinit()
180         for (cp = statp->defdname; *cp; cp++) dots += (*cp == '.');  in res_vinit()
182         cp = statp->defdname;  in res_vinit()
185             cp = strchr(cp, '.') + 1; /* we know there is one */  in res_vinit()
186             *pp++ = cp;  in res_vinit()
194     if ((cp = getenv("RES_OPTIONS")) != NULL) res_setoptions(statp, cp, "env");  in res_vinit()
203     const char* cp = options;  in res_setoptions()  local
209     while (*cp) {  in res_setoptions()
211         while (*cp == ' ' || *cp == '\t') cp++;  in res_setoptions()
213         if (!strncmp(cp, "ndots:", sizeof("ndots:") - 1)) {  in res_setoptions()
214             i = atoi(cp + sizeof("ndots:") - 1);  in res_setoptions()
221         } else if (!strncmp(cp, "debug", sizeof("debug") - 1)) {  in res_setoptions()
228         } else if (!strncmp(cp, "no_tld_query", sizeof("no_tld_query") - 1) ||  in res_setoptions()
229                    !strncmp(cp, "no-tld-query", sizeof("no-tld-query") - 1)) {  in res_setoptions()
231         } else if (!strncmp(cp, "inet6", sizeof("inet6") - 1)) {  in res_setoptions()
233         } else if (!strncmp(cp, "rotate", sizeof("rotate") - 1)) {  in res_setoptions()
235         } else if (!strncmp(cp, "no-check-names", sizeof("no-check-names") - 1)) {  in res_setoptions()
238         else if (!strncmp(cp, "edns0", sizeof("edns0") - 1)) {  in res_setoptions()
241         else if (!strncmp(cp, "dname", sizeof("dname") - 1)) {  in res_setoptions()
243         } else if (!strncmp(cp, "nibble:", sizeof("nibble:") - 1)) {  in res_setoptions()
245             cp += sizeof("nibble:") - 1;  in res_setoptions()
246             i = MIN(strcspn(cp, " \t"), sizeof(ext->nsuffix) - 1);  in res_setoptions()
247             strncpy(ext->nsuffix, cp, (size_t) i);  in res_setoptions()
249         } else if (!strncmp(cp, "nibble2:", sizeof("nibble2:") - 1)) {  in res_setoptions()
251             cp += sizeof("nibble2:") - 1;  in res_setoptions()
252             i = MIN(strcspn(cp, " \t"), sizeof(ext->nsuffix2) - 1);  in res_setoptions()
253             strncpy(ext->nsuffix2, cp, (size_t) i);  in res_setoptions()
255         } else if (!strncmp(cp, "v6revmode:", sizeof("v6revmode:") - 1)) {  in res_setoptions()
256             cp += sizeof("v6revmode:") - 1;  in res_setoptions()
258             if (!strncmp(cp, "single", sizeof("single") - 1)) {  in res_setoptions()
260             } else if (!strncmp(cp, "both", sizeof("both") - 1)) {  in res_setoptions()
268         while (*cp && *cp != ' ' && *cp != '\t') cp++;  in res_setoptions()