Ed is a Domain Specific Language(DSL) that you can use to talk to Git from Ruby. It isn’t intended to be a full interface to Git, but a very small subset of one that allows you to profile code from tag A against tag B (for example). Project is very young, so it may have edge cases I haven’t caught, it definitely hasn’t matured (yet) but please try it out if it’d be useful to you(and report bugs :))