On Sun, Jul 27, 2008 at 2:53 PM, Joe Groff <[EMAIL PROTECTED]> wrote:
> I agree that having 2bi* do the tuck for you would violate my
> expectations of what the word would do.
The proposal was to change the * forms as follows:
a b c X Y 2bi* => a c X b c Y
a b c d X Y Z 2tri* => a d X b d Y c d Z
x1 x2 x3 ... xn { F1 F2 F3 ... Fn-1 } 2spread => x1 xn F1 x2 xn F2 x3
xn F3 ... xn-1 xn Fn-1
So the double spreaders would always apply a quotation to two stack
values, where the first ranges over a set of values and the second is
the top of the stack. It seems to be consistent to me.
As far as I can tell, all the usages of 2bi* in core/ and extra/ are
preceded by tuck, so the current 2bi*/2tri*/2cleave behavior is not as
useful as the above would be.
Slava
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