node_modules/uncrustify/tests/input/oc/blocks.m

int* (  ^  blkReturningPointer)(int) = ^ int* (int a) {
   return a + 1;
};

void (^ blk2)(int *) = ^(int *b) {
   *b = 1;
};


int (^oneFrom)(int) = ^  (int anInt) {
   return anInt - 1;
};

// this should not be flagged as OC_BLOCK_CARET
int x = 12 ^ 23;