[mrgriffin]

I don't write brackets where the condition and body fit on one line, and do otherwise. e.g. like these:

  if (ptr == NULL) return NULL;
  for (int i = 0; i < n; ++i) dst[i] = src[i];

I particularly like it for guards at the beginning of a function, because they end up being less visually heavy, thus drawing my attention to the (presumably more business-logic-y) other lines of code.

It's somewhat like how Ruby lets you write your control structure at the end of a statement to have it only apply to that statement, e.g.

  return nil if ptr.nil?

And I find this style looks different enough to multiple statement control structures that I don't make the mistake of adding an additional statement without also adding brackets.

Of course this is a comment about formatting code, so YMMV.