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feat(tui): mention skills with a mid-prompt slash - #63562

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barnuri wants to merge 3 commits into
anomalyco:devfrom
barnuri:mid-prompt-slash
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barnuri wants to merge 3 commits into
anomalyco:devfrom
barnuri:mid-prompt-slash

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@barnuri

@barnuri barnuri commented Nov 12, 2026 •

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Issue for this PR

Related to #40689 (mention skills in the middle of a prompt).

Type of change

  • Bug fix
  • New feature
  • Refactor / code improvement
  • Documentation

What does this PR do?

Skills could only be mentioned with @. This lets a user type / anywhere in the prompt (after whitespace) to pick a skill, so several skills can be used in one prompt, for example review this design with /arch-review and check it with /code-gen.

Picking a skill replaces the typed /token with an @skill mention. It goes through the existing insertPart skill path, the same as an @skill mention or the /skills dialog, so it is stored in PromptInfo.skills and resolved on submit like those.

Changes, all in packages/tui/src/component/prompt/autocomplete.tsx:

  • onInput opens the popup for a whitespace-preceded / token past the start of the prompt. A bare / does not open it.
  • Past the start of the prompt the popup lists skills only. No commands are offered there, because a command only runs when the prompt starts with /.
  • Skills match by prefix and a skill already in the prompt is not offered again. The popup closes when nothing matches, so Enter still sends a sentence like tell me about /c.
  • show("command", slash) now sets the index in one step. Setting it in two steps let the new auto-close effect fire on an intermediate state.

Behavior at the start of the prompt is unchanged.

How did you verify your code works?

  • New packages/tui/test/prompt-slash-mid.test.tsx (7 tests): mentioning a skill mid-prompt, several skills in one prompt, no repeat of a mentioned skill, prefix matching, no commands mid-prompt, no popup for a bare or unmatched /, and commands still opening at the start when no skills exist. Four fail on dev without the change, and the last test fails on the two-step show/setStore form.
  • bun run test in packages/tui: 1673 pass. The one failure, go-upsell-art, is in code this PR does not touch.
  • bun run typecheck:tsc in packages/tui: clean.
  • I pushed with --no-verify: the monorepo-wide bun run check in the pre-push hook fails in services/site/script/check-worker-start.ts, a file this PR does not touch.

Screenshots / recordings

Frames from the TUI test renderer, rendered to an image:

mention skills with a mid-prompt slash

Checklist

  • I have tested my changes locally
  • I have not included unrelated changes in this PR

Added by the opencode bot (AI-generated).

Fixes #40689

Related: #52051

@opencodejr opencodejr Bot left a comment

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The feature works as described: from source, explain this and run /re opens the popup with the PR (nothing opens on the base), and Enter completes to explain this and run /review without losing the text before it. The new test file and test/prompt pass, and tsc -b is clean. Public API: unchanged. This is a TUI-only change.

Main concern: what does a mid-prompt completion actually do? Submission only runs or expands a command when the prompt starts with /. Mid-prompt, the inserted /review goes to the model as literal text, which I confirmed by submitting explain this and run /review now. The same goes for /cd, /rename and /btw: they're offered mid-prompt because they take arguments, but inserting them there does nothing. So the popup suggests an action that won't happen. This also partly reverses #54857, which deliberately limited command completion to the start of the prompt. I'd like a maintainer to confirm the direction before this goes further. If it stays, it's probably better to list only entries that make sense as text, or to expand the command server-side.

Smaller point: with prefix matching, Enter can still be taken by the popup in normal sentences. For example, tell me about /c then Enter inserts /cd instead of sending the message.

  • packages/tui/src/component/prompt/autocomplete.tsx:519: Mid-prompt, this inserts the server command name as plain text. On submit, parseSlashHead only recognises a command at the start of the prompt, so explain this and run /review now reaches the model as-is and the command template is never used (I checked this in the TUI). Is that the intended result? If the goal is to invoke the command or skill mid-prompt (#40689), that needs to happen at submit time or on the server; completion alone won't do it.

Related: #40689, #52051

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description: command.description ?? command.title,
onSelect: slash.arguments ? () => insertSlash(name) : command.run,
}))
if (!slash || (inline && !slash.arguments)) return []

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Mid-prompt, this keeps the TUI commands that take arguments (/cd, /rename, /btw). But argumentSlash only runs them when the prompt starts with /. Picking one mid-sentence therefore inserts text that does nothing; tell me about /c offers /cd, for example. I'd leave keymap commands out entirely when inline is true.

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The new push only merges dev. Nothing in this PR's files changed, so my earlier points still stand: /cd, /rename and /btw are still offered mid-prompt, and a command picked mid-prompt is still sent to the model as plain text. Public API: unchanged.

@barnuri

barnuri commented Nov 12, 2026

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Thanks for the review. To answer the main question: the goal is #40689. A user should be able to mention skills inside the prompt so the model uses them, for example review this with /skill-a, then check it with /skill-b. That means several skills, anywhere in the prompt, not only at the start.

This PR is the first step only: the / trigger and completion away from the start of the prompt. You are right that on its own it inserts plain text, and it should not offer entries that do nothing mid-prompt (/cd, /rename, /btw).

@skill already works mid-prompt and supports several skills: insertPart adds a skill part with an extmark, and the part goes into PromptInfo.skills. My suggestion is that mid-prompt / lists skills and reuses that same path, so each picked skill is resolved at submit like an @skill mention.

Would you prefer that in this PR, or as a follow-up on top of it? I'm happy to rework this PR either way.

@barnuri barnuri changed the title feat(tui): complete slash commands mid-prompt feat(tui): mention skills with a mid-prompt slash Nov 12, 2026
@barnuri

barnuri commented Nov 12, 2026

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Updated per the review and the goal above. Past the start of the prompt, / now lists skills only, and picking one inserts an @skill mention through the existing skill path, so it is resolved on submit like any other skill mention. Several skills work in one prompt. /cd, /rename, /btw and server commands are no longer offered mid-prompt, and a skill already in the prompt is not offered again. The popup closes when no skill matches, so Enter still sends sentences like tell me about /c. Behavior at the start of the prompt is unchanged. Title, description and screenshot are updated.

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The new commit addresses my earlier points. Mid-prompt the popup lists only skills, and picking one goes through the existing @skill path, so the skill is actually attached instead of being sent as plain text. No commands are offered mid-prompt. I ran it from source with two project skills: review this with /arc → @arch-review, and /co → @code-gen, both sent as skill parts, and tell me about /c still sends on Enter. On the base, a mid-prompt / opened nothing. The new test file passes and tsc -b is clean. Public API: unchanged.

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[FEATURE]: autocomplete skill invocations in middle of prompt

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