On 7/28/12, David A. Wheeler <dwhee...@dwheeler.com> wrote:
> I said:
>> HOWEVER.  I'm wondering if we have the wrong semantics on the "only one
>> datum on the right-hand-side" SUBLIST case.  In particular, in the current
>> semantic:
>>   a $ b
>> means (a b), not (a (b)).
> Ah, I think I found a better way to describe SUBLIST that I think makes it
> clearer:
> "A $ (aka SUBLIST) in the middle of list restarts list processing; the
> right-hand-side (including its sub-blocks) is the last parameter of the
> left-hand side."
> So this means that the two are equivalent:
>   run $ cat(README)
> and
>   run $ cat README
> And *THAT* is a good justification for why "a $ b" means the same as "a b".
> So I think I've answered my own question, there's a good reason that "a $ b"
> means "(a b)" and that we should keep things as they are.

Another one is that "$" is meant to be used to "compress" vertically
any deeply-indented code that happens to be just monotonically
indenting more.


! bar
! ! nitz
! ! ! quux meow

is the same as:

foo $ bar
! nitz
! ! quux meow

is the same as:

foo $ bar $ nitz
! quux meow

And is the same as:

foo $ bar $ nitz $ quux meow

And then there's the form:

! bar

is the same as:

foo $ bar

is the same as:

(foo bar)

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