Fix format_to_n

vitaut · vitaut · commit 2d839bbc6165 · 2025-11-30T07:12:48.000-08:00
diff --git a/include/fmt/compile.h b/include/fmt/compile.h
@@ -522,7 +522,7 @@ auto format_to_n(OutputIt out, size_t n, const S& fmt, T&&... args)
     -> format_to_n_result<OutputIt> {
   using traits = detail::fixed_buffer_traits;
   auto buf = detail::iterator_buffer<OutputIt, char, traits>(out, n);
-  fmt::format_to(std::back_inserter(buf), fmt, std::forward<T>(args)...);
+  fmt::format_to(appender(buf), fmt, std::forward<T>(args)...);
   return {buf.out(), buf.count()};
 }
 

Original file line number	Diff line number	Diff line change
`@@ -522,7 +522,7 @@ auto format_to_n(OutputIt out, size_t n, const S& fmt, T&&... args)`
`522`	`522`	`-> format_to_n_result<OutputIt> {`
`523`	`523`	`using traits = detail::fixed_buffer_traits;`
`524`	`524`	`auto buf = detail::iterator_buffer<OutputIt, char, traits>(out, n);`
`525`		`- fmt::format_to(std::back_inserter(buf), fmt, std::forward<T>(args)...);`
	`525`	`+ fmt::format_to(appender(buf), fmt, std::forward<T>(args)...);`
`526`	`526`	`return {buf.out(), buf.count()};`
`527`	`527`	`}`
`528`	`528`