v4: signing in comes back to the page that asked for it — a guest on a signed-in page, the dump editor, /notifications, /community, /settings or /manage, went to /login and, once signed in, to /, so a digest's link opened signed out lost its way; and since the redirect pushed, Back led to it again. RestrictedLoggedIn now replaces the page with /login?next=<the page>, as /authorize already did. A guest on a feed's "follow" tab, which only a link leads to, is sent there the same way, rather than shown the default tab.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/pages/Index.tsx

@@ -6,7 +6,7 @@
  */
 
 import { useCallback, useEffect, useMemo, useRef } from "react";
-import { useLocation } from "react-router";
+import { Navigate, useLocation } from "react-router";
 
 import { AppHeader } from "../components/layout/AppHeader.tsx";
 import { PresenceRow } from "../components/feed/PresenceRow.tsx";
@@ -36,6 +36,7 @@ import { DumpFeed, type MainFeedProps } from "../components/feed/DumpFeed.tsx";
 import { JournalFeed } from "../components/feed/JournalFeed.tsx";
 import { FollowedFeed } from "../components/feed/FollowedFeed.tsx";
 import { NotFound } from "./NotFound.tsx";
+import { loginPath } from "../utils/auth/next.ts";
 
 /** Passed to {@link Index} by the router, from the path. */
 export interface IndexProps {
@@ -76,11 +77,7 @@ export function Index(
   );
 
   const defaultTab = useViewerDefaultFeedTab();
-  // A guest on "follow", from a shared link or after signing out, gets the
-  // default tab rather than an empty page.
-  const tab: FeedTab = feedTab && (feedTab !== "follow" || !!user)
-    ? feedTab
-    : defaultTab;
+  const tab: FeedTab = feedTab ?? defaultTab;
 
   const feedUrl = categorySlug
     ? `${API_URL}/api/dumps?category=${encodeURIComponent(categorySlug)}`
@@ -181,6 +178,13 @@ export function Index(
   };
 
   if (categoryNotFound) return <NotFound />;
+  // The default tab is never "follow" for a guest, so only a link leads one
+  // here: a digest's, or the page they signed out on.
+  if (tab === "follow" && !user) {
+    return (
+      <Navigate to={loginPath(location.pathname + location.search)} replace />
+    );
+  }
 
   return (
     <div className="index-page">

src/pages/RestrictedLoggedIn.tsx

@@ -1,13 +1,15 @@
 /**
- * Guards `App`'s routes that need a session, the dump editor and
- * `/notifications`.
+ * Guards `App`'s routes that need a session: the dump editor,
+ * `/notifications`, `/community`, `/settings` and `/manage`. `Index` sends a
+ * guest on the "follow" tab to sign in the same way.
  *
  * @module
  */
 
-import { Navigate } from "react-router";
+import { Navigate, useLocation } from "react-router";
 
 import { useAuth } from "../hooks/auth/useAuth.ts";
+import { loginPath } from "../utils/auth/next.ts";
 
 /** Passed to {@link RestrictedLoggedIn} by `App`, around a route's page. */
 export interface RestrictedLoggedInProps {
@@ -15,14 +17,17 @@ export interface RestrictedLoggedInProps {
 }
 
 /**
- * Renders `children` when someone is signed in, and redirects to `/login`
- * otherwise. The page it came from is not remembered, so signing in lands on
- * `/`.
+ * Renders `children` when someone is signed in, and otherwise replaces the
+ * page with `/login`, which comes back to it once signed in: a digest's link
+ * to `/notifications` opened signed out lands there after all.
  */
 export function RestrictedLoggedIn(
   { children }: RestrictedLoggedInProps,
 ): React.JSX.Element {
   const { user } = useAuth();
+  const location = useLocation();
 
-  return user ? <>{children}</> : <Navigate to="/login" />;
+  return user
+    ? <>{children}</>
+    : <Navigate to={loginPath(location.pathname + location.search)} replace />;
 }

src/test/pages/Index.test.tsx

@@ -249,10 +249,10 @@ describe("Index feeds", () => {
       .toBeInTheDocument();
   });
 
-  test("a guest on the follow tab gets the default feed, not a blank page", async () => {
+  test("a guest on the follow tab is sent to sign in, and back", () => {
     route("GET /api/dumps", () => page([older]));
-    setup("/follow");
-    await screen.findByText("Old but loved");
+    setup("/music/follow");
+    expect(currentPath()).toBe("/login?next=%2Fmusic%2Ffollow");
   });
 
   test("the Android share sheet opens the new-dump form with the link", async () => {

src/test/pages/RestrictedLoggedIn.test.tsx

@@ -3,21 +3,22 @@ import { screen } from "@testing-library/react";
 import { Route } from "react-router";
 import { RestrictedLoggedIn } from "../../pages/RestrictedLoggedIn.tsx";
 import { makeSession } from "../fixtures.ts";
-import { renderWithContexts } from "../render.tsx";
+import { currentPath, renderWithContexts } from "../render.tsx";
 
 describe("RestrictedLoggedIn", () => {
-  test("sends guests to login", () => {
+  test("sends guests to login, which comes back to the page", () => {
     renderWithContexts(
       <RestrictedLoggedIn>
         <p>secret</p>
       </RestrictedLoggedIn>,
       {
-        route: "/notifications",
-        path: "/notifications",
+        route: "/community/monthly?x=1",
+        path: "/community/monthly",
         extraRoutes: <Route path="/login" element={<p>login page</p>} />,
       },
     );
     expect(screen.getByText("login page")).toBeInTheDocument();
+    expect(currentPath()).toBe("/login?next=%2Fcommunity%2Fmonthly%3Fx%3D1");
   });
 
   test("lets members through", () => {