musescore/MuseScore — pull request #524 by MarcSabatella (2013-10-31 23:31:11+00:00)
Title: fix #23369

Adds support for "/" within chordnames if the portion after the "/" is
not convertible to tpc and hence not a valid bass note. This allows for
C6/9 to be rendered as such. I look at the *last* slash when deciding
how to proceed, so C6/9/E is handled correctly.