Snippets autocompletion nav (up/down) stopped working on OC 0.16.x

[bew]

Hello!

I recently upgraded from OC 0.15.13 to 0.16.2 and I noticed that up/down navigation in the autocomplete popup shown on #foo doesn't work anymore.

They still work correctly for OC's builtin autocompletes like /foo or @foo, just not for snippets.
(NOTE: I've also now customized the keys used to navigate up/down using keybinds→prompt.autocomplete.{prev,next} in tui.jsonc, but I also checked #foo nav is broken without my custom keybindings)

I checked the release notes of OC 0.16.0 (commits v1.15.13...v1.16.0)
👉 I found a potential commit that changes keybinds handling in OC: anomalyco/opencode#30077 (commit)

What do you think?

---

Pinging author of that potential PR: @simonklee
(sorry for the direct ping but you might be able to help here 🤔)
A quick look around in this plugin's codebase seems to indicate that autocomplete is implemented with this component:

opencode-snippets/tui.tsx

Line 321 in b9eb211

function PromptWithSnippetAutocomplete(props: {

And the keyboard event handling:

opencode-snippets/tui.tsx

Line 588 in b9eb211

const handleNavigationKey = (evt: {

👉 What needs to be changed in the plugin to support the new autocomplete, potentially with new up/down customizations? 🤔
Or if you can point to up-to-date documentation for this I can try to take a look..
(although I don't have much experience with TypeScript)

[simonklee]

This looks like the plugin needs to migrate the autocomplete handling to the keymap API.

While the snippets autocomplete is visible, you should register an active keymap layer and reuse the configured autocomplete bindings, for example:

api.tuiConfig.keybinds.gather("opencode-snippets.autocomplete", [
  "prompt.autocomplete.prev",
  "prompt.autocomplete.next",
  "prompt.autocomplete.hide",
  "prompt.autocomplete.select",
  "prompt.autocomplete.complete",
])

This would also make custom prompt.autocomplete.* bindings work correctly.