Forward arguments to work with views (#2068)

test/os-test.cc

@@ -295,7 +295,7 @@ TEST(OStreamTest, Move) {
 
 TEST(OStreamTest, Print) {
   fmt::ostream out = fmt::output_file("test-file");
-  out.print("The answer is {}.\n", 42);
+  out.print("The answer is {}.\n", fmt::join(std::initializer_list<int>{42}, ", "));
   out.close();
   file in("test-file", file::RDONLY);
   EXPECT_READ(in, "The answer is 42.\n");