Calling macro recursively for all prefixes of the arg list

help
1

It is easy to write a macro that calls itself on all suffixes of the argument list:

macro_rules! suffixes {
    () => {};
    ($first:ident, $($tail:ident),*) => {
       suffixes!($($tail),*);
    }
}

Is it possible to write a macro that calls itself for all the prefixes?
That is, a call to prefixes!(a0, a1, a2) should actually call:

prefixes!(a0, a1, a2);
prefixes!(a0, a1);
prefixes!(a0);
prefixes!();

The naive way of doing it by just swapping the order of matching does not work, because it creates parsing ambiguity.

2

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