True. What about ehird's variation (from the same thread)? It's a little more complex but should accomplish what you're looking for, since all the work is done at read time.
Didn't try it tho, so give it a spin and let us know ^_^
Well, pretty much any solution involving a macro isn't going to do what I want. By necessity, calling a macro requires parentheses and a token. My solution just changes two parentheses to curly braces and requires no extra tokens. It will always be more lightweight than any macro solution. That's the main goal of my feature.
Wow, that's true! I don't use aand much so I didn't notice. Shorting on nil can definitely be a problem because sometimes you want to do something different; it's not very readable since "aand" suggests a boolean result; finally, my macro could be modified in different ways that diverge from the usual aand semantics (like having a special form to break from the pipeline).