Double flat / double sharp not treated correctly in chord symbols
Ubuntu 14.04, GIT commit: 0156b04
1) enter chord symbol: Gbb7
Result: the "bb" displays as two separate flat signs rather than an actual double flat. For double sharp, "##" renders as two sharp signs; "x" renders as "x". No way to get an actual double flat or double sharp.
Furthermore, in German mode, the first flat or sharp currently renders as "es" or "is", which looks really bad - "Gesb7". And entering "Bbb7" does not work - because Bb is not recognized - but since Hbb turns into Bbb, you end up with a chord you can't easily edit.
The actual probloem here is in the parsing, not the rendering - typing Gbb is not recognzied as G double flat. It is recognized as Gb, with the second "b" actually getting applied to the 7. So it's actually represented incorrectly internally as well.
FWIW, this is a slight improvement over 1.3, where neither "bb" nor "##" were recognized at all.