diff --git a/ares_fds.c b/ares_fds.c
index 0740a98c..805ce7ca 100644
--- a/ares_fds.c
+++ b/ares_fds.c
@@ -38,19 +38,19 @@ int ares_fds(ares_channel channel, fd_set *read_fds, fd_set *write_fds)
     {
       server = &channel->servers[i];
       if (server->udp_socket != ARES_SOCKET_BAD)
-	{
-	  FD_SET(server->udp_socket, read_fds);
-	  if (server->udp_socket >= nfds)
-	    nfds = server->udp_socket + 1;
-	}
+        {
+          FD_SET(server->udp_socket, read_fds);
+          if (server->udp_socket >= nfds)
+            nfds = server->udp_socket + 1;
+        }
       if (server->tcp_socket != ARES_SOCKET_BAD)
-	{
-	  FD_SET(server->tcp_socket, read_fds);
-	  if (server->qhead)
-	    FD_SET(server->tcp_socket, write_fds);
-	  if (server->tcp_socket >= nfds)
-	    nfds = server->tcp_socket + 1;
-	}
+        {
+          FD_SET(server->tcp_socket, read_fds);
+          if (server->qhead)
+            FD_SET(server->tcp_socket, write_fds);
+          if (server->tcp_socket >= nfds)
+            nfds = server->tcp_socket + 1;
+        }
     }
   return (int)nfds;
 }
diff --git a/ares_gethostbyaddr.c b/ares_gethostbyaddr.c
index 46144fc8..b33086c0 100644
--- a/ares_gethostbyaddr.c
+++ b/ares_gethostbyaddr.c
@@ -48,13 +48,13 @@ struct addr_query {
 
 static void next_lookup(struct addr_query *aquery);
 static void addr_callback(void *arg, int status, unsigned char *abuf,
-			  int alen);
+                          int alen);
 static void end_aquery(struct addr_query *aquery, int status,
-		       struct hostent *host);
+                       struct hostent *host);
 static int file_lookup(struct in_addr *addr, struct hostent **host);
 
 void ares_gethostbyaddr(ares_channel channel, const void *addr, int addrlen,
-			int family, ares_host_callback callback, void *arg)
+                        int family, ares_host_callback callback, void *arg)
 {
   struct addr_query *aquery;
 
@@ -90,27 +90,27 @@ static void next_lookup(struct addr_query *aquery)
   for (p = aquery->remaining_lookups; *p; p++)
     {
       switch (*p)
-	{
-	case 'b':
-	  addr = ntohl(aquery->addr.s_addr);
-	  a1 = (int)((addr >> 24) & 0xff);
-	  a2 = (int)((addr >> 16) & 0xff);
-	  a3 = (int)((addr >> 8) & 0xff);
-	  a4 = (int)(addr & 0xff);
-	  sprintf(name, "%d.%d.%d.%d.in-addr.arpa", a4, a3, a2, a1);
-	  aquery->remaining_lookups = p + 1;
-	  ares_query(aquery->channel, name, C_IN, T_PTR, addr_callback,
-		     aquery);
-	  return;
-	case 'f':
-	  status = file_lookup(&aquery->addr, &host);
-	  if (status != ARES_ENOTFOUND)
-	    {
-	      end_aquery(aquery, status, host);
-	      return;
-	    }
-	  break;
-	}
+        {
+        case 'b':
+          addr = ntohl(aquery->addr.s_addr);
+          a1 = (int)((addr >> 24) & 0xff);
+          a2 = (int)((addr >> 16) & 0xff);
+          a3 = (int)((addr >> 8) & 0xff);
+          a4 = (int)(addr & 0xff);
+          sprintf(name, "%d.%d.%d.%d.in-addr.arpa", a4, a3, a2, a1);
+          aquery->remaining_lookups = p + 1;
+          ares_query(aquery->channel, name, C_IN, T_PTR, addr_callback,
+                     aquery);
+          return;
+        case 'f':
+          status = file_lookup(&aquery->addr, &host);
+          if (status != ARES_ENOTFOUND)
+            {
+              end_aquery(aquery, status, host);
+              return;
+            }
+          break;
+        }
     }
   end_aquery(aquery, ARES_ENOTFOUND, NULL);
 }
@@ -123,7 +123,7 @@ static void addr_callback(void *arg, int status, unsigned char *abuf, int alen)
   if (status == ARES_SUCCESS)
     {
       status = ares_parse_ptr_reply(abuf, alen, &aquery->addr,
-				    sizeof(struct in_addr), AF_INET, &host);
+                                    sizeof(struct in_addr), AF_INET, &host);
       end_aquery(aquery, status, host);
     }
   else if (status == ARES_EDESTRUCTION)
@@ -133,7 +133,7 @@ static void addr_callback(void *arg, int status, unsigned char *abuf, int alen)
 }
 
 static void end_aquery(struct addr_query *aquery, int status,
-		       struct hostent *host)
+                       struct hostent *host)
 {
   aquery->callback(aquery->arg, status, host);
   if (host)
@@ -150,18 +150,18 @@ static int file_lookup(struct in_addr *addr, struct hostent **host)
 
   char PATH_HOSTS[MAX_PATH];
   if (IS_NT()) {
-	char tmp[MAX_PATH];
-	HKEY hkeyHosts;
-
-	if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, KEY_READ, &hkeyHosts)
-		== ERROR_SUCCESS)
-	{
-		DWORD dwLength = MAX_PATH;
-		RegQueryValueEx(hkeyHosts, DATABASEPATH, NULL, NULL, tmp,
-			&dwLength);
-		ExpandEnvironmentStrings(tmp, PATH_HOSTS, MAX_PATH);
-		RegCloseKey(hkeyHosts);
-	}
+        char tmp[MAX_PATH];
+        HKEY hkeyHosts;
+
+        if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, KEY_READ, &hkeyHosts)
+                == ERROR_SUCCESS)
+        {
+                DWORD dwLength = MAX_PATH;
+                RegQueryValueEx(hkeyHosts, DATABASEPATH, NULL, NULL, tmp,
+                        &dwLength);
+                ExpandEnvironmentStrings(tmp, PATH_HOSTS, MAX_PATH);
+                RegCloseKey(hkeyHosts);
+        }
   }
   else
     GetWindowsDirectory(PATH_HOSTS, MAX_PATH);
@@ -183,7 +183,7 @@ static int file_lookup(struct in_addr *addr, struct hostent **host)
   while ((status = ares__get_hostent(fp, host)) == ARES_SUCCESS)
     {
       if (memcmp((*host)->h_addr, addr, sizeof(struct in_addr)) == 0)
-	break;
+        break;
       ares_free_hostent(*host);
     }
   fclose(fp);
diff --git a/ares_gethostbyname.c b/ares_gethostbyname.c
index a368008c..e03b343f 100644
--- a/ares_gethostbyname.c
+++ b/ares_gethostbyname.c
@@ -50,19 +50,19 @@ struct host_query {
 
 static void next_lookup(struct host_query *hquery);
 static void host_callback(void *arg, int status, unsigned char *abuf,
-			  int alen);
+                          int alen);
 static void end_hquery(struct host_query *hquery, int status,
-		       struct hostent *host);
+                       struct hostent *host);
 static int fake_hostent(const char *name, ares_host_callback callback,
-			void *arg);
+                        void *arg);
 static int file_lookup(const char *name, struct hostent **host);
 static void sort_addresses(struct hostent *host, struct apattern *sortlist,
-			   int nsort);
+                           int nsort);
 static int get_address_index(struct in_addr *addr, struct apattern *sortlist,
-			     int nsort);
+                             int nsort);
 
 void ares_gethostbyname(ares_channel channel, const char *name, int family,
-			ares_host_callback callback, void *arg)
+                        ares_host_callback callback, void *arg)
 {
   struct host_query *hquery;
 
@@ -108,24 +108,24 @@ static void next_lookup(struct host_query *hquery)
   for (p = hquery->remaining_lookups; *p; p++)
     {
       switch (*p)
-	{
-	case 'b':
-	  /* DNS lookup */
-	  hquery->remaining_lookups = p + 1;
-	  ares_search(hquery->channel, hquery->name, C_IN, T_A, host_callback,
-		      hquery);
-	  return;
-
-	case 'f':
-	  /* Host file lookup */
-	  status = file_lookup(hquery->name, &host);
-	  if (status != ARES_ENOTFOUND)
-	    {
-	      end_hquery(hquery, status, host);
-	      return;
-	    }
-	  break;
-	}
+        {
+        case 'b':
+          /* DNS lookup */
+          hquery->remaining_lookups = p + 1;
+          ares_search(hquery->channel, hquery->name, C_IN, T_A, host_callback,
+                      hquery);
+          return;
+
+        case 'f':
+          /* Host file lookup */
+          status = file_lookup(hquery->name, &host);
+          if (status != ARES_ENOTFOUND)
+            {
+              end_hquery(hquery, status, host);
+              return;
+            }
+          break;
+        }
     }
   end_hquery(hquery, ARES_ENOTFOUND, NULL);
 }
@@ -140,7 +140,7 @@ static void host_callback(void *arg, int status, unsigned char *abuf, int alen)
     {
       status = ares_parse_a_reply(abuf, alen, &host);
       if (host && channel->nsort)
-	sort_addresses(host, channel->sortlist, channel->nsort);
+        sort_addresses(host, channel->sortlist, channel->nsort);
       end_hquery(hquery, status, host);
     }
   else if (status == ARES_EDESTRUCTION)
@@ -150,7 +150,7 @@ static void host_callback(void *arg, int status, unsigned char *abuf, int alen)
 }
 
 static void end_hquery(struct host_query *hquery, int status,
-		       struct hostent *host)
+                       struct hostent *host)
 {
   hquery->callback(hquery->arg, status, host);
   if (host)
@@ -163,7 +163,7 @@ static void end_hquery(struct host_query *hquery, int status,
  * query immediately, and return true.  Otherwise return false.
  */
 static int fake_hostent(const char *name, ares_host_callback callback,
-			void *arg)
+                        void *arg)
 {
   struct in_addr addr;
   struct hostent hostent;
@@ -175,7 +175,7 @@ static int fake_hostent(const char *name, ares_host_callback callback,
   for (p = name; *p; p++)
     {
       if (!isdigit((unsigned char)*p) && *p != '.')
-	return 0;
+        return 0;
     }
 
   /* It also only looks like an IP address if it's non-zero-length and
@@ -222,18 +222,18 @@ static int file_lookup(const char *name, struct hostent **host)
 #ifdef WIN32
   char PATH_HOSTS[MAX_PATH];
   if (IS_NT()) {
-	char tmp[MAX_PATH];
-	HKEY hkeyHosts;
-
-	if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, KEY_READ, &hkeyHosts)
-		== ERROR_SUCCESS)
-	{
-		DWORD dwLength = MAX_PATH;
-		RegQueryValueEx(hkeyHosts, DATABASEPATH, NULL, NULL, tmp,
-			&dwLength);
-		ExpandEnvironmentStrings(tmp, PATH_HOSTS, MAX_PATH);
-		RegCloseKey(hkeyHosts);
-	}
+        char tmp[MAX_PATH];
+        HKEY hkeyHosts;
+
+        if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, KEY_READ, &hkeyHosts)
+                == ERROR_SUCCESS)
+        {
+                DWORD dwLength = MAX_PATH;
+                RegQueryValueEx(hkeyHosts, DATABASEPATH, NULL, NULL, tmp,
+                        &dwLength);
+                ExpandEnvironmentStrings(tmp, PATH_HOSTS, MAX_PATH);
+                RegCloseKey(hkeyHosts);
+        }
   }
   else
     GetWindowsDirectory(PATH_HOSTS, MAX_PATH);
@@ -255,14 +255,14 @@ static int file_lookup(const char *name, struct hostent **host)
   while ((status = ares__get_hostent(fp, host)) == ARES_SUCCESS)
     {
       if (strcasecmp((*host)->h_name, name) == 0)
-	break;
+        break;
       for (alias = (*host)->h_aliases; *alias; alias++)
-	{
-	  if (strcasecmp(*alias, name) == 0)
-	    break;
-	}
+        {
+          if (strcasecmp(*alias, name) == 0)
+            break;
+        }
       if (*alias)
-	break;
+        break;
       ares_free_hostent(*host);
     }
   fclose(fp);
@@ -274,7 +274,7 @@ static int file_lookup(const char *name, struct hostent **host)
 }
 
 static void sort_addresses(struct hostent *host, struct apattern *sortlist,
-			   int nsort)
+                           int nsort)
 {
   struct in_addr a1, a2;
   int i1, i2, ind1, ind2;
@@ -289,13 +289,13 @@ static void sort_addresses(struct hostent *host, struct apattern *sortlist,
       memcpy(&a1, host->h_addr_list[i1], sizeof(struct in_addr));
       ind1 = get_address_index(&a1, sortlist, nsort);
       for (i2 = i1 - 1; i2 >= 0; i2--)
-	{
-	  memcpy(&a2, host->h_addr_list[i2], sizeof(struct in_addr));
-	  ind2 = get_address_index(&a2, sortlist, nsort);
-	  if (ind2 <= ind1)
-	    break;
-	  memcpy(host->h_addr_list[i2 + 1], &a2, sizeof(struct in_addr));
-	}
+        {
+          memcpy(&a2, host->h_addr_list[i2], sizeof(struct in_addr));
+          ind2 = get_address_index(&a2, sortlist, nsort);
+          if (ind2 <= ind1)
+            break;
+          memcpy(host->h_addr_list[i2 + 1], &a2, sizeof(struct in_addr));
+        }
       memcpy(host->h_addr_list[i2 + 1], &a1, sizeof(struct in_addr));
     }
 }
@@ -304,14 +304,14 @@ static void sort_addresses(struct hostent *host, struct apattern *sortlist,
  * if none of them match.
  */
 static int get_address_index(struct in_addr *addr, struct apattern *sortlist,
-			     int nsort)
+                             int nsort)
 {
   int i;
 
   for (i = 0; i < nsort; i++)
     {
       if ((addr->s_addr & sortlist[i].mask.s_addr) == sortlist[i].addr.s_addr)
-	break;
+        break;
     }
   return i;
 }
diff --git a/ares_init.c b/ares_init.c
index c79a0ae3..d4a63a36 100644
--- a/ares_init.c
+++ b/ares_init.c
@@ -50,7 +50,7 @@
 #endif
 
 static int init_by_options(ares_channel channel, struct ares_options *options,
-			   int optmask);
+                           int optmask);
 static int init_by_environment(ares_channel channel);
 static int init_by_resolv_conf(ares_channel channel);
 static int init_by_defaults(ares_channel channel);
@@ -58,9 +58,9 @@ static int config_domain(ares_channel channel, char *str);
 static int config_lookup(ares_channel channel, const char *str,
                          const char *bindch, const char *filech);
 static int config_nameserver(struct server_state **servers, int *nservers,
-			     char *str);
+                             char *str);
 static int config_sortlist(struct apattern **sortlist, int *nsort,
-			   const char *str);
+                           const char *str);
 static int set_search(ares_channel channel, const char *str);
 static int set_options(ares_channel channel, const char *str);
 static char *try_config(char *s, const char *opt);
@@ -74,7 +74,7 @@ int ares_init(ares_channel *channelptr)
 }
 
 int ares_init_options(ares_channel *channelptr, struct ares_options *options,
-		      int optmask)
+                      int optmask)
 {
   ares_channel channel;
   int i, status;
@@ -116,15 +116,15 @@ int ares_init_options(ares_channel *channelptr, struct ares_options *options,
     {
       /* Something failed; clean up memory we may have allocated. */
       if (channel->nservers != -1)
-	free(channel->servers);
+        free(channel->servers);
       if (channel->domains)
-	{
-	  for (i = 0; i < channel->ndomains; i++)
-	    free(channel->domains[i]);
-	  free(channel->domains);
-	}
+        {
+          for (i = 0; i < channel->ndomains; i++)
+            free(channel->domains[i]);
+          free(channel->domains);
+        }
       if (channel->sortlist)
-	free(channel->sortlist);
+        free(channel->sortlist);
       if(channel->lookups)
         free(channel->lookups);
       free(channel);
@@ -163,7 +163,7 @@ int ares_init_options(ares_channel *channelptr, struct ares_options *options,
 }
 
 static int init_by_options(ares_channel channel, struct ares_options *options,
-			   int optmask)
+                           int optmask)
 {
   int i;
 
@@ -185,11 +185,11 @@ static int init_by_options(ares_channel channel, struct ares_options *options,
   if ((optmask & ARES_OPT_SERVERS) && channel->nservers == -1)
     {
       channel->servers =
-	malloc(options->nservers * sizeof(struct server_state));
+        malloc(options->nservers * sizeof(struct server_state));
       if (!channel->servers && options->nservers != 0)
-	return ARES_ENOMEM;
+        return ARES_ENOMEM;
       for (i = 0; i < options->nservers; i++)
-	channel->servers[i].addr = options->servers[i];
+        channel->servers[i].addr = options->servers[i];
       channel->nservers = options->nservers;
     }
 
@@ -200,14 +200,14 @@ static int init_by_options(ares_channel channel, struct ares_options *options,
     {
       channel->domains = malloc(options->ndomains * sizeof(char *));
       if (!channel->domains && options->ndomains != 0)
-	return ARES_ENOMEM;
+        return ARES_ENOMEM;
       for (i = 0; i < options->ndomains; i++)
-	{
-	  channel->ndomains = i;
-	  channel->domains[i] = strdup(options->domains[i]);
-	  if (!channel->domains[i])
-	    return ARES_ENOMEM;
-	}
+        {
+          channel->ndomains = i;
+          channel->domains[i] = strdup(options->domains[i]);
+          if (!channel->domains[i])
+            return ARES_ENOMEM;
+        }
       channel->ndomains = options->ndomains;
     }
 
@@ -216,7 +216,7 @@ static int init_by_options(ares_channel channel, struct ares_options *options,
     {
       channel->lookups = strdup(options->lookups);
       if (!channel->lookups)
-	return ARES_ENOMEM;
+        return ARES_ENOMEM;
     }
 
   return ARES_SUCCESS;
@@ -232,7 +232,7 @@ static int init_by_environment(ares_channel channel)
     {
       status = set_search(channel, localdomain);
       if (status != ARES_SUCCESS)
-	return status;
+        return status;
     }
 
   res_options = getenv("RES_OPTIONS");
@@ -240,7 +240,7 @@ static int init_by_environment(ares_channel channel)
     {
       status = set_options(channel, res_options);
       if (status != ARES_SUCCESS)
-	return status;
+        return status;
     }
 
   return ARES_SUCCESS;
@@ -393,14 +393,14 @@ static int init_by_resolv_conf(ares_channel channel)
    On Windows 9X, the DNS server can be found in:
 HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP\NameServer
 
-	On Windows NT/2000/XP/2003:
+        On Windows NT/2000/XP/2003:
 HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\NameServer
-	or
+        or
 HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DhcpNameServer
-	or
+        or
 HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\{AdapterID}\
 NameServer
-	or
+        or
 HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\{AdapterID}\
 DhcpNameServer
    */
@@ -664,7 +664,7 @@ static int init_by_defaults(ares_channel channel)
       /* If nobody specified servers, try a local named. */
       channel->servers = malloc(sizeof(struct server_state));
       if (!channel->servers)
-	return ARES_ENOMEM;
+        return ARES_ENOMEM;
       channel->servers[0].addr.s_addr = htonl(INADDR_LOOPBACK);
       channel->nservers = 1;
     }
@@ -675,22 +675,22 @@ static int init_by_defaults(ares_channel channel)
        * or set it to empty if the hostname isn't helpful.
        */
       if (gethostname(hostname, sizeof(hostname)) == -1
-	  || !strchr(hostname, '.'))
-	{
-	  channel->domains = malloc(0);
-	  channel->ndomains = 0;
-	}
+          || !strchr(hostname, '.'))
+        {
+          channel->domains = malloc(0);
+          channel->ndomains = 0;
+        }
       else
-	{
-	  channel->domains = malloc(sizeof(char *));
-	  if (!channel->domains)
-	    return ARES_ENOMEM;
-	  channel->ndomains = 0;
-	  channel->domains[0] = strdup(strchr(hostname, '.') + 1);
-	  if (!channel->domains[0])
-	    return ARES_ENOMEM;
-	  channel->ndomains = 1;
-	}
+        {
+          channel->domains = malloc(sizeof(char *));
+          if (!channel->domains)
+            return ARES_ENOMEM;
+          channel->ndomains = 0;
+          channel->domains[0] = strdup(strchr(hostname, '.') + 1);
+          if (!channel->domains[0])
+            return ARES_ENOMEM;
+          channel->ndomains = 1;
+        }
     }
 
   if (channel->nsort == -1)
@@ -703,7 +703,7 @@ static int init_by_defaults(ares_channel channel)
     {
       channel->lookups = strdup("fb");
       if (!channel->lookups)
-	return ARES_ENOMEM;
+        return ARES_ENOMEM;
     }
 
   return ARES_SUCCESS;
@@ -736,13 +736,13 @@ static int config_lookup(ares_channel channel, const char *str,
   while (*p)
     {
       if ((*p == *bindch || *p == *filech) && l < lookups + 2) {
-	if (*p == *bindch) *l++ = 'b';
+        if (*p == *bindch) *l++ = 'b';
         else *l++ = 'f';
       }
       while (*p && !isspace((unsigned char)*p) && (*p != ','))
-	p++;
+        p++;
       while (*p && (isspace((unsigned char)*p) || (*p == ',')))
-	p++;
+        p++;
     }
   *l = 0;
   channel->lookups = strdup(lookups);
@@ -750,7 +750,7 @@ static int config_lookup(ares_channel channel, const char *str,
 }
 
 static int config_nameserver(struct server_state **servers, int *nservers,
-			     char *str)
+                             char *str)
 {
   struct in_addr addr;
   struct server_state *newserv;
@@ -811,7 +811,7 @@ static int config_nameserver(struct server_state **servers, int *nservers,
 }
 
 static int config_sortlist(struct apattern **sortlist, int *nsort,
-			   const char *str)
+                           const char *str)
 {
   struct apattern pat, *newsort;
   const char *q;
@@ -821,37 +821,37 @@ static int config_sortlist(struct apattern **sortlist, int *nsort,
     {
       q = str;
       while (*q && *q != '/' && *q != ';' && !isspace((unsigned char)*q))
-	q++;
+        q++;
       if (ip_addr(str, (int)(q - str), &pat.addr) == 0)
-	{
-	  /* We have a pattern address; now determine the mask. */
-	  if (*q == '/')
-	    {
-	      str = q + 1;
-	      while (*q && *q != ';' && !isspace((unsigned char)*q))
-		q++;
-	      if (ip_addr(str, (int)(q - str), &pat.mask) != 0)
-		natural_mask(&pat);
-	    }
-	  else
-	    natural_mask(&pat);
-
-	  /* Add this pattern to our list. */
-	  newsort = realloc(*sortlist, (*nsort + 1) * sizeof(struct apattern));
-	  if (!newsort)
-	    return ARES_ENOMEM;
-	  newsort[*nsort] = pat;
-	  *sortlist = newsort;
-	  (*nsort)++;
-	}
+        {
+          /* We have a pattern address; now determine the mask. */
+          if (*q == '/')
+            {
+              str = q + 1;
+              while (*q && *q != ';' && !isspace((unsigned char)*q))
+                q++;
+              if (ip_addr(str, (int)(q - str), &pat.mask) != 0)
+                natural_mask(&pat);
+            }
+          else
+            natural_mask(&pat);
+
+          /* Add this pattern to our list. */
+          newsort = realloc(*sortlist, (*nsort + 1) * sizeof(struct apattern));
+          if (!newsort)
+            return ARES_ENOMEM;
+          newsort[*nsort] = pat;
+          *sortlist = newsort;
+          (*nsort)++;
+        }
       else
-	{
-	  while (*q && *q != ';' && !isspace((unsigned char)*q))
-	    q++;
-	}
+        {
+          while (*q && *q != ';' && !isspace((unsigned char)*q))
+            q++;
+        }
       str = q;
       while (isspace((unsigned char)*str))
-	str++;
+        str++;
     }
 
   return ARES_SUCCESS;
@@ -876,9 +876,9 @@ static int set_search(ares_channel channel, const char *str)
   while (*p)
     {
       while (*p && !isspace((unsigned char)*p))
-	p++;
+        p++;
       while (isspace((unsigned char)*p))
-	p++;
+        p++;
       n++;
     }
 
@@ -894,15 +894,15 @@ static int set_search(ares_channel channel, const char *str)
       channel->ndomains = n;
       q = p;
       while (*q && !isspace((unsigned char)*q))
-	q++;
+        q++;
       channel->domains[n] = malloc(q - p + 1);
       if (!channel->domains[n])
-	return ARES_ENOMEM;
+        return ARES_ENOMEM;
       memcpy(channel->domains[n], p, q - p);
       channel->domains[n][q - p] = 0;
       p = q;
       while (isspace((unsigned char)*p))
-	p++;
+        p++;
       n++;
     }
   channel->ndomains = n;
@@ -919,19 +919,19 @@ static int set_options(ares_channel channel, const char *str)
     {
       q = p;
       while (*q && !isspace((unsigned char)*q))
-	q++;
+        q++;
       val = try_option(p, q, "ndots:");
       if (val && channel->ndots == -1)
-	channel->ndots = atoi(val);
+        channel->ndots = atoi(val);
       val = try_option(p, q, "retrans:");
       if (val && channel->timeout == -1)
-	channel->timeout = atoi(val);
+        channel->timeout = atoi(val);
       val = try_option(p, q, "retry:");
       if (val && channel->tries == -1)
-	channel->tries = atoi(val);
+        channel->tries = atoi(val);
       p = q;
       while (isspace((unsigned char)*p))
-	p++;
+        p++;
     }
 
   return ARES_SUCCESS;