Trivial fixups, no code changes

- Indentation changes
- Fixed wrong name for used in DBUG_ENTER
- Added some code comments

sql/log_event.h

@@ -2227,8 +2227,10 @@ public:
   virtual bool is_commit()   { return false; }
   virtual bool is_rollback() { return false; }
 #ifdef MYSQL_SERVER
-  Query_compressed_log_event(THD* thd_arg, const char* query_arg, ulong query_length,
+  Query_compressed_log_event(THD* thd_arg, const char* query_arg,
-    bool using_trans, bool direct, bool suppress_use, int error);
+                             ulong query_length,
+                             bool using_trans, bool direct, bool suppress_use,
+                             int error);
   virtual bool write();
 #endif
 };

sql/sql_class.cc

@@ -6562,8 +6562,8 @@ exit:;
 /**
   Check if we should log a table DDL to the binlog
 
-  @@return true  yes
+  @retval true  yes
-  @@return false no
+  @retval false no
 */
 
 bool THD::binlog_table_should_be_logged(const LEX_CSTRING *db)
@@ -7452,8 +7452,8 @@ int THD::binlog_query(THD::enum_binlog_query_type qtype, char const *query_arg,
       */
       if (binlog_should_compress(query_len))
       {
-        Query_compressed_log_event qinfo(this, query_arg, query_len, is_trans, direct,
+        Query_compressed_log_event qinfo(this, query_arg, query_len, is_trans,
-                            suppress_use, errcode);
+                                         direct, suppress_use, errcode);
         error= mysql_bin_log.write(&qinfo);
       }
       else

sql/sql_insert.cc

@@ -3823,15 +3823,18 @@ select_insert::prepare(List<Item> &values, SELECT_LEX_UNIT *u)
   */
   lex->current_select= lex->first_select_lex();
 
-  res= setup_returning_fields(thd, table_list) ||
+  res= (setup_returning_fields(thd, table_list) ||
-       setup_fields(thd, Ref_ptr_array(), values, MARK_COLUMNS_READ, 0, 0, 0) ||
+        setup_fields(thd, Ref_ptr_array(), values, MARK_COLUMNS_READ, 0, 0,
+                     0) ||
         check_insert_fields(thd, table_list, *fields, values,
-                                  !insert_into_view, 1, &map);
+                            !insert_into_view, 1, &map));
 
   if (!res && fields->elements)
   {
-    Abort_on_warning_instant_set aws(thd, !info.ignore && thd->is_strict_mode());
+    Abort_on_warning_instant_set aws(thd,
-    res= check_that_all_fields_are_given_values(thd, table_list->table, table_list);
+                                     !info.ignore && thd->is_strict_mode());
+    res= check_that_all_fields_are_given_values(thd, table_list->table,
+                                                table_list);
   }
 
   if (info.handle_duplicates == DUP_UPDATE && !res)

sql/sql_table.cc

@@ -2828,6 +2828,12 @@ bool log_drop_table(THD *thd, const LEX_CSTRING *db_name,
   append_identifier(thd, &query, table_name);
   query.append(STRING_WITH_LEN("/* Generated to handle "
                                "failed CREATE OR REPLACE */"));
+
+  /*
+    In case of temporary tables we don't have to log the database name
+    in the binary log. We log this for non temporary tables, as the slave
+    may use a filter to ignore queries for a specific database.
+  */
   error= thd->binlog_query(THD::STMT_QUERY_TYPE,
                            query.ptr(), query.length(),
                            FALSE, FALSE, temporary_table, 0) > 0;
@@ -5205,7 +5211,8 @@ int create_table_impl(THD *thd, const LEX_CSTRING &orig_db,
         thd->variables.option_bits|= OPTION_KEEP_LOG;
         thd->log_current_statement= 1;
         create_info->table_was_deleted= 1;
-        DBUG_EXECUTE_IF("send_kill_after_delete", thd->set_killed(KILL_QUERY); );
+        DBUG_EXECUTE_IF("send_kill_after_delete",
+                        thd->set_killed(KILL_QUERY); );
 
         /*
           Restart statement transactions for the case of CREATE ... SELECT.
@@ -5745,7 +5752,8 @@ mysql_rename_table(handlerton *base, const LEX_CSTRING *old_db,
   DBUG_ENTER("mysql_rename_table");
   DBUG_ASSERT(base);
   DBUG_PRINT("enter", ("old: '%s'.'%s'  new: '%s'.'%s'",
-                       old_db->str, old_name->str, new_db->str, new_name->str));
+                       old_db->str, old_name->str, new_db->str,
+                       new_name->str));
 
   // Temporarily disable foreign key checks
   if (flags & NO_FK_CHECKS) 
@@ -5755,8 +5763,8 @@ mysql_rename_table(handlerton *base, const LEX_CSTRING *old_db,
 
   build_table_filename(from, sizeof(from) - 1, old_db->str, old_name->str, "",
                        flags & FN_FROM_IS_TMP);
-  length= build_table_filename(to, sizeof(to) - 1, new_db->str, new_name->str, "",
+  length= build_table_filename(to, sizeof(to) - 1, new_db->str,
-                               flags & FN_TO_IS_TMP);
+                               new_name->str, "", flags & FN_TO_IS_TMP);
   // Check if we hit FN_REFLEN bytes along with file extension.
   if (length+reg_ext_length > FN_REFLEN)
   {

sql/sql_trigger.cc

@@ -1826,7 +1826,7 @@ bool Table_triggers_list::drop_all_triggers(THD *thd, const LEX_CSTRING *db,
   TABLE table;
   char path[FN_REFLEN];
   bool result= 0;
-  DBUG_ENTER("Triggers::drop_all_triggers");
+  DBUG_ENTER("Table_triggers_list::drop_all_triggers");
 
   table.reset();
   init_sql_alloc(key_memory_Table_trigger_dispatcher,