I'm doing progvember this year. The point is to make something out of vinter, an interpreted toy programming language I've been working on recently. Lately I've been bad about completing my projects, so hopefully this will help. Vinter started as a way to partly get re-acquainted with C++, which I haven't used lately, and partly because I found this really interesting approach to language parsing by tree manipulation a couple of years ago I've been itching to make use of.
I don't have a public source repository up yet, but I hope to have one soon. Meanwhile it's all git on my local workstation. I started a twitter account for keeping track of my changes. If I've gotten the HTML right, it ought to show up below :-)
Tweets by @allusernamestkn