Check Patch #2748 for an updated version of the importer which fixes that issue beside others.
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Ah cool.. here's my solution, it's a bit more strict but does essentially the same thing.

Add following to convert_wiki_text:

<pre>
# alpha/numeric lists
text = text.gsub(/(^[ ]+)(\d+|[a-zA-Z])\.[ ]/) { |s| '#' * $1.length + ' '}
# bullet lists
text = text.gsub(/(^[ ]+)\*[ ]/) { |s| '*' * $1.length + ' '}
</pre>

Test cases:
<pre>
puts convert_wiki_text(" 1. test")
puts convert_wiki_text(" 1. test")
puts convert_wiki_text(" * test")
puts convert_wiki_text(" * test")
puts convert_wiki_text(" a. test")
puts convert_wiki_text(" a. test")
</pre>

Output:
<pre>
# test
## test
* test
** test
# test
## test
</pre>
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Any news on this?
Is anyone able to reproduce this with the current trunk?
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