LWG4061 Should std::basic_format_context be default-constructible/copyable/movable?

Author: burblebee

source/utilities.tex

@@ -17620,6 +17620,9 @@
     basic_format_args<basic_format_context> args_;      // \expos
     Out out_;                                           // \expos
 
+    basic_format_context(const basic_format_context&) = delete;
+    basic_format_context& operator=(const basic_format_context&) = delete;
+
   public:
     using iterator = Out;
     using char_type = charT;