Just to bring this back to my original question:

NSUInteger i;
NSMutableArray *a;
NSEnumerationOptions opts;
GSPredicateBlock      predicate;

i = [a indexOfObjectWithOptions: opts passingTest: predicate];

What is the code to set up predicate using the GSBlock macro?
Can someone show me what the above would look like as a working
bit of code?

--
+---------------------------------------------------------------+
|   Dale Amon                  Immortal Data                    |
|   CEO             Midland International Air and Space Port    |
| a...@vnl.com       "Data Systems for Deep Space and Time"     |
+---------------------------------------------------------------+

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