There is a [Creole parser plugin|http://moinmoin.wikiwikiweb.de/ParserMarket/WikiCreole] for the [MoinMoin wiki engine|http://moinmoin.wikiwikiweb.de].

It is based on the [Creole0.1] draft.

There were several issues when writing it:
* The line breaks are a major pain. Currently I only add them inside paragraphs, and I included a special case that will not add a line break at the end of a paragraph if it is followed by an empty line. The line break is however added if the paragraph is followed by a list or a preformatted block, and I personally don't feel like adding more lookahead special cases.
* The expression for urls used is an approximation. In particular, commas,dots,exclamation marks and such are included in the url only when not followed by a space, so that you can write {{{http://news.com/article/2006,09,06}}} as a link, but also {{{see those two pages: http://one.org, http://two.org}}}. Other special characters are included in the url, but escaped when appropriate.
* I'm a little bit generous when parsing mixed lists. This is valid:

{{{
# One
- Two
- Three
# Four
}}}

and gets rendered as:

# One
# Two
# Three
# Four

How should be such and similar errors handled?

----

I would say that should be rendered as:

# One
* Two
* Three
# Four

--[ChuckSmith]