minor chord names

[fiëé visuëlle]

Hello pond comrades,

some time ago I asked about displaying minor chord names as lowercase  
letters without the "m" modifier, as it is common (at least) in German  
folk songbooks.
I.e.

\context ChordNames {
        \germanChords % or whatever
        \chordmode { a:m }
}

should print as "a" instead of "Am".


Is this possible nowadays, and how?

There's nothing appropriate in 
http://lilypond.org/doc/v2.12/Documentation/user/lilypond/Displaying-chords

Since I don't need fancy jazz chords, perhaps there's a possibility  
using chordNameExceptions?


Greetlings from Lake Constance
---
fiëé visuëlle
Henning Hraban Ramm
http://www.fiee.net
http://angerweit.tikon.ch/lieder/
https://www.cacert.org (I'm an assurer)