Support root routes in route groups

.github/workflows/tests.yml

@@ -36,4 +36,4 @@ jobs:
           command: composer update --${{ matrix.stability }} --prefer-dist --no-interaction --no-progress
 
       - name: Execute tests
-        run: vendor/bin/phpunit --colors --verbose
+        run: vendor/bin/phpunit --colors

src/MultilingualRegistrar.php

@@ -269,7 +269,7 @@ protected function generateNameForLocaleFromOptions(string $locale, string $key,
      */
     protected function generatePrefixForLocale(string $key, string $locale): ?string
     {
-        if ($key === '/' || $this->shouldNotPrefixLocale($locale)) {
+        if (($key === '/' && ! $this->router->getLastGroupPrefix()) || $this->shouldNotPrefixLocale($locale)) {
             return null;
         }
 

tests/RouteTest.php

@@ -247,6 +247,23 @@ public function a_route_with_prefix_stack_can_be_registered(): void
         );
     }
 
+    /** @test **/
+    public function a_root_route_with_prefix_stack_can_be_registered(): void
+    {
+        $this->registerTestTranslations();
+
+        Route::prefix('prefix')->group(static function () {
+            Route::multilingual('/')->name('test');
+        });
+
+        $this->assertEquals(url('prefix'), localized_route('test'));
+
+        $this->assertEquals(
+            url('fr/prefixe'),
+            localized_route('test', [], 'fr')
+        );
+    }
+
     /** @test **/
     public function a_view_route_can_be_registered(): void
     {
@@ -569,10 +586,12 @@ protected function registerTestTranslations(): void
         $this->registerTranslations([
             'en' => [
                 'routes.prefix/test' => 'prefix/test',
+                'routes.prefix' => 'prefix',
                 'routes.test' => 'test',
             ],
             'fr' => [
                 'routes.prefix/test' => 'prefixe/teste',
+                'routes.prefix' => 'prefixe',
                 'routes.test' => 'teste',
             ],
         ]);