Alan Manuel Gloria:
> Okay, fine, I don't like it (inconsistency here concerns me), but I
> won't oppose it. Will not support, will not oppose.
>
> Here's another question. I assume that { foo(bar(nitz)) } is (foo
> (bar nitz)), i.e. n-expressionism is recursive within curlies.
Yes.
> How will we implement the reader? The current implementation is much
> simpler as it is simply a hook that gets triggered on {, but with
> n-expressions inside curlies, we'll have to show a reference
> implementation that replaces 'read.
I believe it's pretty easy *if* the reader's delimiters include {}. In fact,
it may simplify the implementation. In our implementation, I think it means
that my-read-delimited-list will *always* call neoteric-read-nocomment. Let's
prototype this in stages, but it may mean that we drop the reader parameter
entirely throughout all the code, which would actually simplify everything.
In this modified curly-expression-only reader, the topmost level probably
shouldn't allow neoteric-expressions, e.g., we shouldn't allow:
{a + b}(7)
We could code it either way, but I think that people are thinking that "{"
enables neoteric-reading in this case, so the final "}" should end it. I
suspect most people won't notice the difference, and you could always use this
if you wanted it:
{ {a + b}(7) }
or, use sweet-expressions, where it *would* work.
I don't intend to change sweet-expressions for this change. In
sweet-expressions, I still intend to say that you can say f(x) anywhere. The
only effect is that in SRFI-105-only systems, f(x) is enabled *inside* but not
*outside* curly-infix.
--- David A. Wheeler
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