My project's code base (see link) is 68% MetaPost and correctly detected as such. MetaPost appears at the top of the list on the analysis page, accounting for roughly 35000 of the roughly 50000 lines in the project. However, the "factoids" say the project is "Mostly written in C." Why? And can that be changed?
My best guess is that maybe someone thought MetaPost code is in some way documentation rather than really real code, and the factoid generator only looks at a short list of "real" programming languages instead of the entire list that the line counter looks at. But if that was the rationale, it's simply incorrect.