Hi,

Would it be possible to allow this in Haskell (where <applied to> is some new operator or keyword):

f <applied to> {x a;y b;z c}

As an equivalent to:

f (x a) (y b) (z c)

Of course my intention is that the new keyword should initiate layout syntax so we can write this:

f <applied to>
x a
y b
z c

In addition to the case where you have a big function application, this is useful for defining trees:

Branch <applied to>
Branch <applied to>
Leaf
Leaf
Leaf

Has something like this been suggested before? Are there any disadvantages other than a new keyword and some potential confusion for readers?
Any suggestions for a good keyword? I suppose some variant of $ makes sense, a textual keyword like "with" would be nice but probably break a lot of code.

Regards,

Jonas