From 71b27c4cd8c770136c40622a29aff6ecb697d44c Mon Sep 17 00:00:00 2001
From: Dax <mail@thdxr.com>
Date: Thu, 12 Nov 2026 11:46:46 -0500
Subject: [PATCH] fix(app): reuse mention suggestions while typing (#63572)

---
 packages/app/src/composer/editor/editor.tsx   | 29 +++++++++--------
 .../app/src/composer/editor/interaction.ts    | 12 +++----
 .../test-browser/composer-file-search.test.ts | 32 +++++++++++++++++--
 3 files changed, 51 insertions(+), 22 deletions(-)

diff --git a/packages/app/src/composer/editor/editor.tsx b/packages/app/src/composer/editor/editor.tsx
index c1843b8b663..6cbfda96575 100644
--- a/packages/app/src/composer/editor/editor.tsx
+++ b/packages/app/src/composer/editor/editor.tsx
@@ -2,6 +2,7 @@ import {
   createEffect,
   createMemo,
   createResource,
+  createSelector,
   createSignal,
   createUniqueId,
   For,
@@ -16,6 +17,7 @@ import { createStore } from "solid-js/store"
 import { Portal } from "solid-js/web"
 import { createResizeObserver } from "@solid-primitives/resize-observer"
 import { createMediaQuery } from "@solid-primitives/media"
+import { Key } from "@solid-primitives/keyed"
 import { FileIcon } from "@opencode/ui/file-icon"
 import { Icon } from "@opencode/ui/icon"
 import { IconButton } from "@opencode/ui/icon-button"
@@ -1254,6 +1256,7 @@ function ComposerEditorPopover(props: {
 }) {
   const i18n = useI18n()
   const listID = props.id ?? createUniqueId()
+  const active = createSelector(() => props.activeID)
   let container: HTMLDivElement | undefined
   const [store, setStore] = createStore({ maxHeight: COMPOSER_SUGGESTION_MAX_HEIGHT })
 
@@ -1397,34 +1400,34 @@ function ComposerEditorPopover(props: {
           when={props.items.length > 0}
           fallback={<div class="px-2 py-1 text-v2-text-text-muted">{props.emptyLabel}</div>}
         >
-          <For each={props.items}>
+          <Key each={props.items} by="id">
             {(item) => (
               <button
                 type="button"
-                data-suggestion-id={item.id}
-                data-active={props.activeID === item.id ? "" : undefined}
+                data-suggestion-id={item().id}
+                data-active={active(item().id) ? "" : undefined}
                 class="flex h-7 w-full shrink-0 items-center gap-2 rounded-md px-2 py-1 text-start"
-                classList={{ "bg-v2-overlay-simple-overlay-hover": props.activeID === item.id }}
+                classList={{ "bg-v2-overlay-simple-overlay-hover": active(item().id) }}
                 onPointerMove={(event) => {
-                  if (event.movementX || event.movementY) props.onActiveChange(item)
+                  if (event.movementX || event.movementY) props.onActiveChange(item())
                 }}
-                onClick={() => props.onSelect(item)}
+                onClick={() => props.onSelect(item())}
               >
                 <div class="flex min-w-0 flex-1 items-center gap-2">
-                  <ComposerSuggestionIcon item={item} />
+                  <ComposerSuggestionIcon item={item()} />
                   <bdi dir="auto" class="shrink-0 text-v2-text-text-base">
-                    {item.label}
+                    {item().label}
                   </bdi>
-                  <Show when={item.description}>
-                    <span class="min-w-0 truncate text-v2-text-text-muted">{item.description}</span>
+                  <Show when={item().description}>
+                    <span class="min-w-0 truncate text-v2-text-text-muted">{item().description}</span>
                   </Show>
                 </div>
-                <Show when={item.keybind?.length}>
-                  <span class="shrink-0 text-v2-text-text-muted">{item.keybind?.join("+")}</span>
+                <Show when={item().keybind?.length}>
+                  <span class="shrink-0 text-v2-text-text-muted">{item().keybind?.join("+")}</span>
                 </Show>
               </button>
             )}
-          </For>
+          </Key>
         </Show>
       </Show>
     </div>
diff --git a/packages/app/src/composer/editor/interaction.ts b/packages/app/src/composer/editor/interaction.ts
index fe6f63f9f1d..41a149a0ded 100644
--- a/packages/app/src/composer/editor/interaction.ts
+++ b/packages/app/src/composer/editor/interaction.ts
@@ -287,9 +287,12 @@ export function createComposerEditor(input: {
   })
   onCleanup(() => dispatchMentionSearch({ type: "disposed" }))
 
+  const contextOpen = createMemo(() => state.popover.type === "context")
+  const fileRows = createMemo(() => selectMentionFiles(mentionSearch()))
+
   const contextList = useFilteredList<ComposerSuggestion>({
     items: (query) => {
-      if (state.popover.type !== "context") return []
+      if (!contextOpen()) return []
 
       const sessions = input.searchSessions?.(query) ?? []
 
@@ -301,12 +304,7 @@ export function createComposerEditor(input: {
 
       const seen = new Set(recent.map((item) => item.id))
 
-      return [
-        ...fixed,
-        ...sessions,
-        ...recent,
-        ...selectMentionFiles(mentionSearch()).filter((item) => !seen.has(item.id)),
-      ]
+      return [...fixed, ...sessions, ...recent, ...fileRows().filter((item) => !seen.has(item.id))]
     },
     key: (item) => item.id,
     filterKeys: ["label"],
diff --git a/packages/app/test-browser/composer-file-search.test.ts b/packages/app/test-browser/composer-file-search.test.ts
index 788a61fbecb..f4a3d0d0fa3 100644
--- a/packages/app/test-browser/composer-file-search.test.ts
+++ b/packages/app/test-browser/composer-file-search.test.ts
@@ -88,9 +88,37 @@ test("closing @ aborts its session search, and reopening on the same word waits
   }
 })
 
+test("moving the @ highlight reuses the current query results", async () => {
+  const searches: string[] = []
+
+  const value = setup(
+    { se: ["src/server.ts", "src/session.ts"] },
+    {
+      searchSessions: (query) => {
+        searches.push(query)
+
+        return []
+      },
+    },
+  )
+
+  try {
+    await value.type("@se")
+    searches.length = 0
+    value.editor.onKeyDown(new KeyboardEvent("keydown", { key: "ArrowDown" }))
+    expect(activeID(value)).toBe("file:src/session.ts")
+    expect(searches).toEqual([])
+  } finally {
+    value.dispose()
+  }
+})
+
 function setup(
   results: Record<string, string[]>,
-  options?: { requestSessionSearch?: (word: string, signal: AbortSignal) => Promise<void> },
+  options?: {
+    searchSessions?: (query: string) => ComposerSuggestion[]
+    requestSessionSearch?: (word: string, signal: AbortSignal) => Promise<void>
+  },
 ) {
   jest.useFakeTimers()
 
@@ -112,7 +140,7 @@ function setup(
 
         return paths.map(file)
       },
-      searchSessions: () => [],
+      searchSessions: options?.searchSessions,
       requestSessionSearch: options?.requestSessionSearch,
       view: { submit: { stopping: () => false, onSubmit() {}, onStop() {} } },
     })