Here is modified test for lists with subitems:

|test numbered list|numbered list:
# item 1
# item 2
## subitem 2.1
## subitem 2.2
# item 3|
|test bulleted list|bulleted list:
* item 1
* item 2
** subitem 2.1
** subitem 2.2
* item 3|
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The fact that lists are mangled in table cells is fixed in r11845. But they won't be formatted as ul/ol as Redcloth does not support this feature.
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The example given by Mikhail in note-1 still doesn't render properly.

<pre>
|test numbered list|numbered list:
# item 1
# item 2
## subitem 2.1
## subitem 2.2
# item 3|
|test bulleted list|bulleted list:
* item 1
* item 2
** subitem 2.1
** subitem 2.2
* item 3|
</pre>

now renders as:

<pre>
<table>
<tr>
<td>test numbered list</td>
<td>numbered list:<br /># item 1<br /># item 2<br />## subitem 2.1<br />## subitem 2.2<br /># item 3</td>
</tr>
<tr>
<td>test bulleted list</td>
<td>bulleted list:<br />* item 1<br />* item 2<br /><strong>* subitem 2.1<br /></strong>* subitem 2.2<br />* item 3</td>
</tr>
</table>
</pre>

So it looks like the nested @ul@ items aren't parsed correctly. I've written an additional test case based on the one in r11845 which will fail at the moment:
<pre><code class="ruby">
def test_tables_with_lists_with_nested_items
raw = <<-RAW
This is a table with lists with nested items:
|test numbered list|numbered list:
# item 1
# item 2
## subitem 2.1
## subitem 2.2
# item 3|
|test bulleted list|bulleted list:
* item 1
* item 2
** subitem 2.1
** subitem 2.2
* item 3|
RAW
expected = <<-EXPECTED
<p>This is a table with lists with nested items:</p>
<table>
<tr>
<td>test numbered list</td>
<td>numbered list:<br /># item 1<br /># item 2<br />## subitem 2.1<br />## subitem 2.2<br /># item 3</td>
</tr>
<tr>
<td>test bulleted list</td>
<td>bulleted list:<br />* item 1<br />* item 2<br />** subitem 2.1<br />** subitem 2.2<br />* item 3</td>
</tr>
</table>
EXPECTED
assert_equal expected.gsub(%r{\s+}, ''), to_html(raw).gsub(%r{\s+}, '')
end
</code></pre>
--------------------------------------------------------------------------------
Jean-Philippe Lang wrote:
> But they won't be formatted as ul/ol as Redcloth does not support this feature.

I think that this fact should be subsequently reported at the Redcloth development site as feature requiest if nobody had done it earlier. It would be great to see this feature in Redmine.

--------------------------------------------------------------------------------
Mikhail Sviridov wrote:
> Jean-Philippe Lang wrote:
> > But they won't be formatted as ul/ol as Redcloth does not support this feature.
>
> I think that this fact should be subsequently reported at the Redcloth development site as feature requiest if nobody had done it earlier. It would be great to see this feature in Redmine.

This relies on issue #6269. Redmine is still using (a heavily patched) RedCloth 3.0.4. All new features for RedCloth are integrated only into RedCloth 4.x.
A quick search reveals that there are already requests to format ul/ol lists inside table cells e.g. http://jgarber.lighthouseapp.com/projects/13054-redcloth/tickets/249.
--------------------------------------------------------------------------------
2.4 feature freeze
--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
The fix has the unpleasant side-effect, that trailing space of a row leads to wrong rendering:

<pre>
| 1.1 | 1.2 |
| 2.1 | 2.2 | <-space here
| 3.1 | 3.2 |
| 4.1 | 4.2 |
</pre>
renders as:

| 1.1 | 1.2 |
| 2.1 | 2.2 |
| 3.1 | 3.2 |
| 4.1 | 4.2 |

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
I attached a patch for the trailing whitespace problem to #18223.
--------------------------------------------------------------------------------

relates,New,6269,RedCloth 4 support
relates,Closed,18223,Table renders wrong if a trailing space is after | symbol