How can I see expanded macros?

Projects Programming
4

I don't know what the switch is doing, you don't have any case statements there:

 switch(0){ if(0x0);
      else if(ext == "htm") doHTML(parameter, client);
      else if(ext == "jpg") doJPG( parameter, client);
      else if(ext == "txt") doTXT( parameter, client);
      else crash(4002, "unknown file extension");
    }

Also I advise against using the String class, it can be a memory hog.