An EBNF Grammar for Wiki Creole 1.0

Authors: Martin Junghans, Dirk Riehle, Rama Gurram, Matthias Kaiser, Mario Lopes, Umit Yalcinalp

Abstract: Today’s wiki engines are not interoperable. This is an unfortunate consequence of the lack of rigorously specified standards. This technical report presents a complete and validated EBNF-based grammar for Wiki Creole, a community standard for wiki markup. Wiki Creole is also the only standard currently available. Wiki Creole is being specified using prose, leading to inconsistencies and ambiguities. Our grammar uncovered those ambiguities which we fed back into the specification process. The Wiki Creole grammar presented in this report makes the creation of Wiki Creole parsers simple using parser generators, ANTLR in our case. Using a precise specification of wiki markup lets us decouple wiki editors from wiki storage from further wiki processing tools. Based on this decoupling layer we expect innovation on these different parts to proceed independently and at a faster pace than before.

Reference: In ACM SIGWEB Newsletter, Volume 2007, Issue Winter (Winter 2007), Article No. 4. ACM Press, 2007.

Available as a PDF file.

Website Reorganization

As you’ve probably guessed, this is my (Dirk Riehle’s) professional blog about computer science research and the software industry.

You can still find the old blog at though I’ll slowly migrate relevant bits and pieces to the blog.

Hello World!

Yep, I’m finally switching over to WordPress. First my personal blog, now the research blog. Stay tuned for lots of updates in these first weeks of 2008!