Since multiline paragraphs have been permitted since 0.4, it should also be
the case for list elements. I.e.
{{{
* some long
list item
}}}
should be rendered like
{{{
* some long list item
}}}
An empty line would be used to start a paragraph.

An empty line marks the end of all lists, even deeply nested ones:
{{{
* a
* b
** c

*d
}}}
is rendered as
{{{
<ul>
<li>a</li>
;li>b</li>
<ul>
<li>c</li>
</ul>
</ul>
<ul>
<li>d</li>
</ul>
}}}

In addition, any markup that doesn't belong in a list will end the list. For instance, tables, headings or preformatted blocks are not allowed inside list elements, and thus a markup that starts any of them will cause a list to end. An alternative solution, ignoring the markup when it appears inside a list, would introduce a nasty special case.

As a general rule of thumb, any inline elements are allowed inside list while the block elements (ones that start on their own line) will cause the list to end.

-------------
== Wikis allowing this markup

* Oddmuse
* MoinMoin
* PodWiki
* TracWiki
* [[PEARText_WikiPackage]]
* WikiModel - different list syntaxes are supported (including this one)
* ...

== Wikis not allowing this markup

* [[MediaWiki]] (allowed with HTML)

* TiddlyWiki (no multiline paragraphs either)
* DokuWiki
* [[C2Wiki]] (?)
* ...

== Other multiline list item markup

* [[JSPWiki]] (leading spaces on next lines)
* [[Crossmark]] (indenting)
* UseMod (linefeeds escaped with a backslash)
* PmWiki (linefeeds escaped with a backslash)
* NotesWiki (linefeeds escaped with a backslash)
* WikiModel - different list syntaxes are supported (including this one)
* ...