Make printf work in search (#164)

include/fmt/printf.h

@@ -192,8 +192,16 @@ class printf_width_handler: public function<unsigned> {
     return 0;
   }
 };
+
+template <typename Char, typename Context>
+void printf(basic_buffer<Char> &buf, basic_string_view<Char> format,
+            basic_format_args<Context> args) {
+  Context(std::back_inserter(buf), format, args).format();
+}
 }  // namespace internal
 
+using internal::printf;  // For printing into memory_buffer.
+
 template <typename Range>
 class printf_arg_formatter;
 
@@ -566,12 +574,6 @@ void basic_printf_context<OutputIt, Char, AF>::format() {
   buffer.append(pointer_from(start), pointer_from(it));
 }
 
-template <typename Char, typename Context>
-void printf(internal::basic_buffer<Char> &buf, basic_string_view<Char> format,
-            basic_format_args<Context> args) {
-  Context(std::back_inserter(buf), format, args).format();
-}
-
 template <typename Buffer>
 struct basic_printf_context_t {
   typedef basic_printf_context<