Brett Terpstra:

The initial release of CriticMarkup included a preprocessor for Marked 1.5+, but given the uncertain release date of the next incarnation of Marked, I wanted to make it work with the standard custom processor feature of Marked 1.4. A few adjustments to the existing script and one dependency later it’s good to go.

I use CriticMarkup whenever I need to track changes in a MultiMarkdown document. I launch Marked (from Sublime Text 2) on a daily basis to preview my articles and generate HTML, so it’s good to know the two systems can work together now.