New idea?

FROM : William Squires
DATE : Sun Apr 27 17:29:53 2008

I just had a light bulb moment (oops, I should have said "a super-
bright white LED moment") - what if Apple were to include a "macro-
expansion" tool in XCode (4, anybody?)? The idea would be that - if 
you have a problem in which you are having trouble with hard-to-find 
compilation errors, you could run this tool (through a menu item 
selection), and it would show you the total expansion for a ".m", 
".c", or ".cpp" file as the compiler sees it, including all "#include/
#import"s and all #define macro expansions, all color-coded. You 
would then recompile, and the error messages would then refer to that 
listing, allowing you to pinpoint what the compiler is really seeing 
that line as saying, rather than what you THINK the compiler is seeing!
  Just my $0.02 here.