Bug #12183 SHOW OPEN TABLES behavior doesn't match grammar

Description:
The SHOW OPEN TABLES statement displays the open non-TEMPORARY 
tables.  For example:

mysql> show open tables;
+----------+---------+--------+-------------+
| Database | Table   | In_use | Name_locked |
+----------+---------+--------+-------------+
| test     | t       |      0 |           0 |
| sampdb   | student |      0 |           0 |
| test     | parent  |      0 |           0 |
+----------+---------+--------+-------------+
3 rows in set (0.00 sec)

The grammar for SHOW OPEN TABLES allows a FROM db_name and a LIKE
'pattern' clause.  However, I don't understand how these clauses
are supposed to work.  More precisely, it appears that they do
not work.  I suspect there are two bugs.

Bug 1) The FROM db_name clause appears to do nothing.

mysql> show open tables from test;
+----------+---------+--------+-------------+
| Database | Table   | In_use | Name_locked |
+----------+---------+--------+-------------+
| test     | t       |      0 |           0 |
| sampdb   | student |      0 |           0 |
| test     | parent  |      0 |           0 |
+----------+---------+--------+-------------+
3 rows in set (0.00 sec)

Bug 2) The LIKE 'pattern' clause appears to match the _database_
name.  I would have expected it to match the _table_ name.

mysql> show open tables like 't%';
+----------+--------+--------+-------------+
| Database | Table  | In_use | Name_locked |
+----------+--------+--------+-------------+
| test     | t      |      0 |           0 |
| test     | parent |      0 |           0 |
+----------+--------+--------+-------------+
2 rows in set (0.00 sec)

mysql> show open tables like 'p%';
Empty set (0.01 sec)

If these are real bugs, they should be fixed.
If they are not, please indicate what the expected
behavior is so that we can document it.
Thanks.

How to repeat:
See above.

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/28036

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/28328

Noted in 5.0.12 changelog and updated
SHOW OPEN TABLES section.

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/commits/43137

ChangeSet@1.2549, 2008-02-28 15:12:23+03:00, anozdrin@quad. +2 -0
  Fix test case for Bug#12183 to make it stable.

Pushed into 5.1.24-rc

Pushed into 6.0.5-alpha

Also documented for 5.1.23-ndb-6.3.11 and 5.1.24.