> I can only wonder how productive writing custom porcellain commands in mercurial is given that interface. You don't have to use Python to add more commands o

> I can only wonder how productive writing custom porcellain commands in mercurial is given that interface. You don't have to use Python to add more commands on top of Mercurial. Its CLI is also its API, just like git, and you don't typically have to use Python to write tools on top of hg, just like you don't typically need to write C to hack on top of git. The stdout of hg is guaranteed to remain stable, so you can script it by just parsing stdout. The options are guaranteed to remain stable, so your old tools won't need to be updated in case hg's CLI some day changes, because its CLI never changes. There are also a bunch of hg CLI commands that start with debug (e.g. hg debugparents or hg debugdag) that you can use to directly manipulate hg's internal revlog data structure and do fun things like create a corrupt repo, if that's what you want to do. :-)