Folks (especially Andrew & Dirk),Florian suggested this, so here goes. I went ahead and created a premilinary "committer's guide" so that we can codify some of the principles that are used to develop JSPWiki. It's not a collection of rules (except for the "DON'T BREAK THE BUILD" -rule ;-), but more like just writing down the best practices that we have.
http://www.jspwiki.org/wiki/Committers%20Guide Please do add to it if you see that there's something which is missing. /Janne
