Toggle the sidebar with Ctrl+B on a layout that does not write Latin letters

CHANGELOG.md

@@ -8,6 +8,12 @@ Newest first. `Unreleased` is what is on `main` and not yet tagged.
 
 ## Unreleased
 
+### Ctrl+B shows and hides the sidebar on a layout that does not write Latin letters
+
+The sidebar toggle's tooltip names Ctrl+B, or ⌘B on a Mac, and the shortcut was recognised by the
+character the key writes. On a Russian or Greek layout the B key writes "и" or "β", so the shortcut
+did nothing there. It is now read the way the app's own shortcuts read it since Shift+N was fixed
+for the same layouts: from the physical key when the layout writes a character outside ASCII there.
 ### Scrolling a Bot's browser no longer scrolls or zooms the page around it
 
 While somebody drives a Bot's browser, a turn of the mouse wheel over its screen is sent to it, and

app/src/components/ui/sidebar.tsx

@@ -6,6 +6,7 @@ import { useRender } from "@base-ui/react/use-render";
 import { cva, type VariantProps } from "class-variance-authority";
 
 import { useIsMobile } from "@/hooks/use-mobile";
+import { keyOf } from "@/lib/hotkeys/hotkeys";
 import { cn } from "@/lib/utils";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
@@ -112,8 +113,10 @@ function SidebarProvider({
   // Adds a keyboard shortcut to toggle the sidebar.
   React.useEffect(() => {
     const handleKeyDown = (event: KeyboardEvent) => {
+      // `keyOf` rather than `key`, as the app's own shortcuts read it: on a layout that writes
+      // another script the B key writes "и" or "β", and only its `code` still says B.
       if (
-        event.key === SIDEBAR_KEYBOARD_SHORTCUT &&
+        keyOf(event) === SIDEBAR_KEYBOARD_SHORTCUT &&
         (event.metaKey || event.ctrlKey)
       ) {
         event.preventDefault();

app/tests/sidebar-shortcut-layouts.test.tsx

@@ -0,0 +1,80 @@
+import { afterAll, afterEach, beforeAll, expect, test } from "bun:test";
+import { GlobalRegistrator } from "@happy-dom/global-registrator";
+import { act, cleanup, render } from "@testing-library/react";
+import { SidebarProvider, useSidebar } from "@/components/ui/sidebar";
+
+/**
+ * The sidebar shortcut on a keyboard layout that does not write Latin letters.
+ *
+ * The toggle's tooltip names it as Ctrl+B, or ⌘B on a Mac, and the sidebar's listener compared
+ * `KeyboardEvent.key` with "b". On Russian the B key writes "и", and on Greek it writes "β", so the
+ * shortcut the tooltip names never fired for anybody with one of those layouts selected. It is the
+ * same miss Shift+N and the paste shortcut on a Bot's screen had.
+ */
+
+beforeAll(() => {
+  GlobalRegistrator.register();
+});
+
+afterEach(() => {
+  cleanup();
+});
+
+afterAll(() => {
+  GlobalRegistrator.unregister();
+});
+
+function SidebarState() {
+  return <output>{useSidebar().open ? "open" : "closed"}</output>;
+}
+
+type Modifiers = Partial<Pick<KeyboardEvent, "ctrlKey" | "metaKey">>;
+
+/**
+ * A sidebar, and a way to press a key at it that answers with the state it is left in.
+ *
+ * The keydown is the one a browser reports: `key` from the layout, `code` from the physical key.
+ */
+function renderSidebar() {
+  const { container } = render(
+    <SidebarProvider>
+      <SidebarState />
+    </SidebarProvider>,
+  );
+  return (key: string, code: string, modifiers: Modifiers) => {
+    act(() => {
+      window.dispatchEvent(
+        new KeyboardEvent("keydown", {
+          key,
+          code,
+          ...modifiers,
+          bubbles: true,
+          cancelable: true,
+        }),
+      );
+    });
+    return container.querySelector("output")?.textContent;
+  };
+}
+
+test("Ctrl+B and Cmd+B toggle the sidebar on a layout that writes another script", () => {
+  const press = renderSidebar();
+
+  expect(press("и", "KeyB", { ctrlKey: true })).toBe("closed");
+  expect(press("β", "KeyB", { metaKey: true })).toBe("open");
+});
+
+test("a layout that writes Latin letters still goes by the letter, wherever its key is", () => {
+  const press = renderSidebar();
+
+  // Dvorak writes B on the key QWERTY calls N, and X on the key QWERTY calls B.
+  expect(press("b", "KeyN", { ctrlKey: true })).toBe("closed");
+  expect(press("x", "KeyB", { ctrlKey: true })).toBe("closed");
+});
+
+test("another letter, or the B key without its modifier, still does nothing", () => {
+  const press = renderSidebar();
+
+  expect(press("т", "KeyN", { ctrlKey: true })).toBe("open");
+  expect(press("и", "KeyB", {})).toBe("open");
+});