#[cache_left_rec] not work in peg v0.7.0

[Lucifier129]

When I attach #[cache_left_rec] in a left-recursion rule, I got an error like below.

[Lucifier129]

It seems like cache_left_rec is an unpublished feature that was not in peg v0.7.0, any plan or roadmap to ship this extremely useful feature?

[kevinmehall]

It was implemented after the release of 0.7.0. I haven't had a chance to finish a new release yet but will do so soon.

[zsol]

I just wanted to say a big thank you @kevinmehall for being supportive of new ideas and implementations like cache_left_rec (as well as #269 which I still haven't gotten around to 😄 ). Your work has helped me write a full Python 3.9 CST parser in Instagram/LibCST#566 (feel free to shoot drive-by comments on it BTW), which will power new Python 3.10 syntax for all users of LibCST. If there's anything I can do to help with the maintenance burden of rust-peg, let me know! Can't wait to depend on a released version of rust-peg instead of git :)

[kevinmehall]

0.8.0 has been released with #[cache_left_rec] support. 🎉