write_buffer: consider buffer as saved only if we used it's filename

src/commands.cc

@@ -146,6 +146,8 @@ void write_buffer(const CommandParameters& params, Context& context)
                                      : parse_filename(params[0]);
 
     write_buffer_to_file(buffer, filename);
+
+    if (filename == buffer.name())
         buffer.notify_saved();
 }