From ee47e8ec1f45533b999b3070ca5babe3d618ce3e Mon Sep 17 00:00:00 2001
From: Emil Hvitfeldt <emilhhvitfeldt@gmail.com>
Date: Wed, 2 Sep 2026 16:50:37 -0700
Subject: [PATCH 1/2] Load render-components for revealjs documents in Hub

ReactRenderer's customComponentsCode gate only allowed format ===
'q2-debug' | 'q2-preview', so render-components: silently never
loaded for revealjs presentations even though the CLI's
q2-preview-spa has no such restriction. revealjs converged onto the
same Q2PreviewIframe/dispatcher tree as q2-preview a while back
(bd-vwp4y5ku), but this gate was never updated to match.
---
 .../render/ReactRenderer.integration.test.tsx | 29 +++++++++++++++++++
 .../src/components/render/ReactRenderer.tsx   | 13 ++++++---
 2 files changed, 38 insertions(+), 4 deletions(-)

diff --git a/hub-client/src/components/render/ReactRenderer.integration.test.tsx b/hub-client/src/components/render/ReactRenderer.integration.test.tsx
index 3c2bf1560..11b0ec0bb 100644
--- a/hub-client/src/components/render/ReactRenderer.integration.test.tsx
+++ b/hub-client/src/components/render/ReactRenderer.integration.test.tsx
@@ -300,6 +300,35 @@ describe('ReactRenderer render-components gate (Plan 2A item 13)', () => {
     });
   });
 
+  it('extracts customComponentsCode for revealjs format', () => {
+    // revealjs renders through the same Q2PreviewIframe/dispatcher tree as
+    // q2-preview (see ReactRenderer format routing describe block above),
+    // so render-components: must apply there too. The gate at the top of
+    // customComponentsCode's useMemo previously only allowed
+    // 'q2-debug' | 'q2-preview', silently skipping revealjs documents even
+    // though revealjs converged onto this same tree (bd-vwp4y5ku) — that
+    // convergence just never extended to this particular gate.
+    const fileContents = new Map([
+      ['elliot/simple.tsx', 'export const Para = () => null;'],
+    ]);
+
+    render(
+      <ReactRenderer
+        astJson={astWithRenderComponents(['/elliot/simple.tsx'])}
+        currentFilePath="elliot/index.qmd"
+        files={[]}
+        fileContents={fileContents}
+        onNavigateToDocument={() => {}}
+        setAst={() => {}}
+        format="revealjs"
+      />,
+    );
+
+    expect(lastCapturedPreviewCode()).toEqual({
+      '/elliot/simple.tsx': 'JS:export const Para = () => null;',
+    });
+  });
+
   it('q2-debug behavior unchanged (regression baseline)', () => {
     const fileContents = new Map([
       ['elliot/simple.tsx', 'export const Para = () => null;'],
diff --git a/hub-client/src/components/render/ReactRenderer.tsx b/hub-client/src/components/render/ReactRenderer.tsx
index 9732acf05..9c15bd825 100644
--- a/hub-client/src/components/render/ReactRenderer.tsx
+++ b/hub-client/src/components/render/ReactRenderer.tsx
@@ -198,12 +198,17 @@ function ReactRenderer({
   );
 
   // Extract component paths - only recompute when the list of paths
-  // changes. The gate covers both q2-debug and q2-preview because both
-  // load user TSX overrides via the iframe's
+  // changes. The gate covers q2-debug, q2-preview, and revealjs because
+  // all three load user TSX overrides via the iframe's
   // `LOAD_CUSTOM_COMPONENTS` postMessage handler. Plan 2A item 13
-  // extended the q2-debug-only gate to also include q2-preview.
+  // extended the q2-debug-only gate to also include q2-preview. revealjs
+  // later converged onto the same Q2PreviewIframe tree (bd-vwp4y5ku), but
+  // this gate wasn't updated to match, so render-components: silently
+  // never loaded for revealjs documents in Hub, even though the CLI's
+  // q2-preview-spa has no such gate at all. That gap itself isn't tracked
+  // under any strand as of this fix.
   const componentPathsKey = useMemo(() => {
-    if (format !== 'q2-debug' && format !== 'q2-preview') {
+    if (format !== 'q2-debug' && format !== 'q2-preview' && format !== 'revealjs') {
       return '';
     }
 

From 7be9bc57ba345c1cb5a63e15abc8079ba39ee377 Mon Sep 17 00:00:00 2001
From: Emil Hvitfeldt <emilhhvitfeldt@gmail.com>
Date: Wed, 2 Sep 2026 16:52:11 -0700
Subject: [PATCH 2/2] changelog: fix render-components not loading for revealjs
 (ee47e8ec)

---
 hub-client/changelog.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hub-client/changelog.md b/hub-client/changelog.md
index 282a27a50..db4227cf4 100644
--- a/hub-client/changelog.md
+++ b/hub-client/changelog.md
@@ -23,6 +23,10 @@ WASM rebuild is needed for a changelog-only edit.
 
 -->
 
+### 2026-09-02
+
+- [`ee47e8ec`](https://github.com/quarto-dev/q2/commits/ee47e8ec): Fix `render-components:` custom TSX overrides silently not loading for revealjs presentations.
+
 ### 2026-09-01
 
 - [`a4c3fb9c`](https://github.com/quarto-dev/q2/commits/a4c3fb9c): The experimental branch bar's Merge button now uses the app's standard accent color in both themes, and its branch-name input shows the standard keyboard focus ring.