Perhapse the real point is what you're looking at is an unusual case in
that you've been passed a piece of raw shell input and you're thinking
about what it would look like if it wasn't raw any more. This is hairy
stuff that most people who consider themselves shell language gurus
probably never have to think about --- extracting bits of semi-parsed
chunks of input is something most people would do in a language like
Lisp rather than a shell. So it's not surprising you're a bit
bamboozled when you're coming to this out of nowhere.