Bug #11523 \d behaves different from delimiter

Description:
That delimiter doesn't work is registered in several other bugs (#5337 for example). But the \d command works differently, and for some reason seems to work better.

How to repeat:
File s1.sql:
delimiter //
create table tmp1(c1 int)
//
delimiter ;
drop table tmp1;

File s2.sql:
\d //
create table tmp1(c1 int)
//
\d ;
drop table tmp1;

$ mysql test
mysql> \. s1.sql
ERROR 1051 (42S02): Unknown table 'tmp1'
mysql> exit
$ mysql test
mysql> \. s2.sql
Query OK, 0 rows affected (0.05 sec)

Query OK, 0 rows affected (0.02 sec)

mysql> exit

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/internals/26464

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/internals/26736

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/internals/28084

Fixed in 5.0.12. Built-in client commands such as delimiter and \d are now always parsed within files that are read using the  \. and source commands.

Noted in 5.0.12 changelog.