Double nested lists give bad output.

[netcarver]

An example of invalid results from straight (though invalid) Textile:

## Red
## Blue

(Spotted by JSoo.)

[jsoo]

As discussed on #textile (IRC), I would prefer Textile to ignore anything that is not valid Textile, and simply send it straight through. In this case:

<p>## Red<br />
## Blue</p>

Or in this case:

# Red
### Blue

Where current output is:

<ol>
    <li>Red
<ol>
    <li>Blue</li>
</ol></li>
</ol>

I would prefer:

<ol>
    <li>Red<br />
    ### Blue</li>
</ol>

[eliph]

With Textile 2.4 I get:

<p> <ol>
    <li>Red</li>
    <li>Blue</li>
</ol></li></p>

for

## Red
## Blue

And this is fine, I believe. The HTML may be invalid, but the extra </li> tag will be ignored by any browser. Anybody seeking clean HTML code should clean up their Textile code first. And the HTML for

# Red
### Blue

is valid anyway, and probably is what the user wanted. So why bother?