How to delay completions on deleting characters backwards?

[teotenn]

Let's say that I set (setq corfu-auto-delay 2) then it would take 2 seconds to corfu to show the completion candidates when I am typing, after reaching the amount of characters in corfu-auto-prefix, However, when deleting characters backwards, the completions requests are triggered almost instantly. How can I delay that to the same threshold that corfu-auto-delay has?

[minad]

This is not supported. The popup is updated immediately by corfu--post-command. However the candidate computation is interruptible, such that it shouldn't block Emacs. corfu--post-command is not directly related to corfu-auto--post-command, which is responsible for triggering the popup, and which respects corfu-auto-delay.

[teotenn]

Ok, thanks. It leaves me with 2 questions:

1. Why it is not supported?

It is kind of confusing that corfu-auto-delay is used ONLY for the first trigger, but it has no effect after that. Maybe it should be mention somewhere. Or did I miss it in the documentation? - Either way my question of why is not supported holds.

2. If this is not supported, how can I turn it off completely then?

I tried removing "delete-backward-char\\'" "\\backward-delete-char"fromcorfu-auto-commandsbut it also did not work. I added to that(setq corfu-auto nil)` to ensure nothing automatically triggered, but still when I am deleting characters from a symbol, I get completion options from Corfu.

[jdtsmith]

Usually deleting characters simply updates the filtering of the candidate list, which is an instant operation in Emacs, so a delay doesn't make sense. Only if you have wrapped in cape-capf-buster or similar are new completions requested.