"character_sets" has been removed from SHOW VARIABLES. Use SHOW CHARACTER SET instead.

 "character_set_system" has been added to display the system character set

include/my_sys.h

@@ -216,7 +216,6 @@ extern CHARSET_INFO *get_charset_by_name(const char *cs_name, myf flags);
 extern CHARSET_INFO *get_charset_by_csname(const char *cs_name, 
 					   uint cs_flags, myf my_flags);
 extern void free_charsets(void);
-extern char *list_charsets(myf want_flags); /* my_free() this string... */
 extern char *get_charsets_dir(char *buf);
 extern my_bool my_charset_same(CHARSET_INFO *cs1, CHARSET_INFO *cs2);
 

mysys/charset.c

@@ -688,70 +688,3 @@ static void charset_append(DYNAMIC_STRING *s, const char *name)
     dynstr_append(s, " ");
   }
 }
-
-
-/* Returns a dynamically-allocated string listing the character sets
-   requested.  The caller is responsible for freeing the memory. */
-
-char *list_charsets(myf want_flags)
-{
-  DYNAMIC_STRING s;
-  char *p;
-
-  (void)init_available_charsets(MYF(0));
-  init_dynamic_string(&s, NullS, 256, 1024);
-
-  if (want_flags & MY_CS_COMPILED)
-  {
-    CHARSET_INFO **cs;
-    for (cs= all_charsets; cs < all_charsets+255; cs++)
-    {
-      if (cs[0])
-      {
-        dynstr_append(&s, cs[0]->name);
-        dynstr_append(&s, " ");
-      }
-    }
-  }
-
-  if (want_flags & MY_CS_CONFIG)
-  {
-    CHARSET_INFO **cs;
-    char buf[FN_REFLEN];
-    MY_STAT status;
-
-    for (cs=all_charsets; cs < all_charsets+255; cs++)
-    {
-      if (!cs[0] || !cs[0]->name || charset_in_string(cs[0]->name, &s))
-	continue;
-      get_charset_conf_name(cs[0]->name, buf);
-      if (!my_stat(buf, &status, MYF(0)))
-	continue;       /* conf file doesn't exist */
-      dynstr_append(&s, cs[0]->name);
-      dynstr_append(&s, " ");
-    }
-  }
-
-  if (want_flags & (MY_CS_INDEX|MY_CS_LOADED))
-  {
-    CHARSET_INFO **cs;
-    for (cs= all_charsets; cs < all_charsets + 255; cs++)
-      if (cs[0] && cs[0]->name && (cs[0]->state & want_flags) )
-        charset_append(&s, cs[0]->name);
-  }
-  
-  if (s.length)
-  {
-    s.str[s.length - 1]= '\0';   /* chop trailing space */
-    p= my_strdup(s.str, MYF(MY_WME));
-  }
-  else
-  {
-    p= my_strdup("", MYF(MY_WME));
-  }
-  dynstr_free(&s);
-  
-  return p;
-}
-
-

sql/mysql_priv.h

@@ -678,7 +678,7 @@ bool open_log(MYSQL_LOG *log, const char *hostname,
 
 extern time_t start_time;
 extern char *mysql_data_home,server_version[SERVER_VERSION_LENGTH],
-	    mysql_real_data_home[], *charsets_list, *opt_mysql_tmpdir;
+	    mysql_real_data_home[], *opt_mysql_tmpdir;
 #define mysql_tmpdir (my_tmpdir(&mysql_tmpdir_list))
 extern MY_TMPDIR mysql_tmpdir_list;
 extern const char *command_name[];

sql/mysqld.cc

@@ -420,7 +420,7 @@ ulong expire_logs_days = 0;
 
 char mysql_real_data_home[FN_REFLEN],
      language[LIBLEN],reg_ext[FN_EXTLEN],
-     mysql_charsets_dir[FN_REFLEN], *charsets_list,
+     mysql_charsets_dir[FN_REFLEN],
      blob_newline,f_fyllchar,max_sort_char,*mysqld_user,*mysqld_chroot,
      *opt_init_file;
 char *language_ptr= language;
@@ -942,7 +942,6 @@ void clean_up(bool print_message)
 #endif
   if (defaults_argv)
     free_defaults(defaults_argv);
-  my_free(charsets_list, MYF(MY_ALLOW_ZERO_PTR));
   free_tmpdir(&mysql_tmpdir_list);
 #ifdef HAVE_REPLICATION
   my_free(slave_load_tmpdir,MYF(MY_ALLOW_ZERO_PTR));
@@ -2111,8 +2110,6 @@ static int init_common_variables(const char *conf_file_name, int argc,
   global_system_variables.collation_client= default_charset_info;
   global_system_variables.collation_connection= default_charset_info;
 
-  charsets_list= list_charsets(MYF(MY_CS_COMPILED | MY_CS_CONFIG));
-
   if (use_temp_pool && bitmap_init(&temp_pool,1024,1))
     return 1;
   return 0;
@@ -4607,6 +4604,7 @@ static void set_options(void)
 #endif
 
   sys_charset.value= (char*) MYSQL_CHARSET;
+  sys_charset_system.value= (char*) system_charset_info->csname;
   (void) strmake(language, LANGUAGE, sizeof(language)-1);
   (void) strmake(mysql_real_data_home, get_relative_path(DATADIR),
 		 sizeof(mysql_real_data_home)-1);

sql/set_var.cc

@@ -105,6 +105,10 @@ sys_var_str		sys_charset("character_set",
 				    sys_check_charset,
 				    sys_update_charset,
 				    sys_set_default_charset);
+sys_var_str		sys_charset_system("character_set_system",
+				    sys_check_charset,
+				    sys_update_charset,
+				    sys_set_default_charset);
 sys_var_collation_client sys_collation_client("collation_client");
 sys_var_collation_connection sys_collation_connection("collation_connection");
 sys_var_collation_results sys_collation_results("collation_results");
@@ -464,7 +468,7 @@ struct show_var_st init_vars[]= {
   {sys_binlog_cache_size.name,(char*) &sys_binlog_cache_size,	    SHOW_SYS},
   {sys_bulk_insert_buff_size.name,(char*) &sys_bulk_insert_buff_size,SHOW_SYS},
   {sys_charset.name, 	      (char*) &sys_charset,		    SHOW_SYS},
-  {"character_sets",          (char*) &charsets_list,               SHOW_CHAR_PTR},
+  {sys_charset_system.name,   (char*) &sys_charset_system,          SHOW_SYS},
   {sys_collation_client.name, (char*) &sys_collation_client,	    SHOW_SYS},
   {sys_collation_connection.name,(char*) &sys_collation_connection, SHOW_SYS},
   {sys_collation_results.name, (char*) &sys_collation_results,	    SHOW_SYS},

sql/set_var.h

@@ -582,4 +582,5 @@ int sql_set_variables(THD *thd, List<set_var_base> *var_list);
 void fix_delay_key_write(THD *thd, enum_var_type type);
 
 extern sys_var_str sys_charset;
+extern sys_var_str sys_charset_system;
 CHARSET_INFO *get_old_charset_by_name(const char *old_name);