No syntax for minor chords with suspended fourth?

[lily]

Hi,
        In Lily 2.1.xxx one used to be able to say, in a \chords{}
block, e:m.sus4 to get an e minor chord with suspended fourth.

This syntax is now rejected.  If I spell the chord explicitly, (e.g.,
<e g b a'> it prints as Em add11 which while correct, isn't natural
to a guitarist.

So how do I enter (and get to print) minor chords with suspensions?

Peter c