Is projectile using project.el correctly?

[pedz]

With commit 86969f9658e278ebacb3d625d0309046ff1f2b54 of Emacs, project.el changed and instead of something like (cons 'vc root), the backend value is cached up as well and so (project-current) should return something like (list 'vc backend root). This quest started from this post. project.el uses (nth 2 project) to get to the directory but project-projectile returns only a cons cell.

I've not experienced any symptoms or problems which is why this is in discussions rather than issues (plus, I'm fairly clueless as to how all this stuff works). I'm trying to correctly implement platformio-mode to use project.el. There is one pull request but I have come to believe that it does not really do the job correctly (see previous disclaimer).

[pedz]

I see now... The "project" can be different depending upon its type. The vc type has the backend cached up but the transient and others don't.