Implement square brackets for accidentals
Square brackets around accidentals are one (widely used) way to indicate editorially supplied accidentals.
Supporting them would be a useful addition. See here for the original request.
Neither the mscore font nor, as far as I can see, Bravura or SMuFL 1.18 seem to include square brackets, but I may have missed them.
However, it seems a worth addition, at least to mscore font (and Gonville?). Should SMuFL support them in the future, it would be rather simple to sync them.