[BusyBox] Clean up

[Rob Landley]

On Tuesday 26 July 2005 09:09, Jason Schoon wrote:
> That was basically my original idea, but Rob pointed out that
> multiline blocks are really messy in that scenario.
>
> I think from a preprocessor and compiler standpoint it is all cool,
> but you will make some people scratch their heads the first time they
> see:
>
> CLEAN_UP({free(foo); close(sockfd)});
>
> Curly braces inside of parens just isn't something you generally see.

Actually the thing you can't get away with is _semicolons_, which normal C 
doesn't have inside of parentheses.

These are normal C: understandable by anybody who knows the language:

if(test) thing();

if(test) {
  thing(a);
  thing(b);
  thing(c);
}

This isn't:

CLEAN_UP(
  thing(a);
  thing(b);
  thing(c);
)

The c-like alternative is:

CLEAN_UP(thing(a));
CLEAN_UP(thing(b));
CLEAN_UP(thing(c));

Which isn't really an improvement.