corfu--auto-complete-deferred error causing stuttering with Corfu+ESS

[kaibagley]

OS: Windows 10
Emacs version: 29.1 build 2
Corfu version: 0.38
ESS version: 18.10.3snapshot

Hey,

When using corfu + ESS, I regularly get stuttering while typing, and if I stop typing at the right time I can see in the minibuffer an error message:

Error running timer 'corfu--auto-complete-deferred': (user-error "ESS process not ready. Finish your command before trying again")

I brought this up on the Corfu tracker and minad mentioned that he believes it is likely due to the ESS Capf being uninterruptible. Thanks for any help!

[KaiAragaki]

OS: macOS 14.0
Emacs version: 29.1 build 1
Corfu version: 0.38
ESS version: Commit 8b4664e

I also get this error. When this happens, I cannot stop iESS via C-c C-c, and typically have to kill the process and start it anew. I don't get stuttering while typing, though.

[kaibagley]

Interesting, I don't have to restart R to fix it in my case, it just causes stuttering for me

[KaiAragaki]

A temporary, but not preferred workaround, is setting corfu-auto to nil.

[KaiAragaki]

Since this is also the solution to #1226, perhaps they're related.