lilypond: How to display changed chord names only?

In German songbooks chordnames are only displayed if they have changed. Lilypond shows chordnames at the beginning of a new line even if the chordname has not changed. Is it possible to change this behaviour?

• I didn't get the problem you're facing. I constructed a MWE here and the chord names are only displayed when there's a change. Anyway, I suspect the solution has to do with the break-visibility property. Oct 15 '19 at 15:23

• You can use \omit ChordName instead of that override (at least in 2.19). But you're right, the default behavior for \set chordChanges = ##t is to repeat the chord at the beginning of a new line. Oct 11 '19 at 22:42