Yesterday at the MusicXML community meeting at the Musikmesse in
Frankfurt we were informed about the approaching 1.0 release of
Steinberg's proposed SMuFL standard (http://smufl.org). Once 1.0 is
published there shall be no further changes in the set of covered
glyphs, and the presumed deadline for _any_ feature requests in this
regard will be the end of this month.
AFAIK SMuFL doesn't yet cover _all_ of Feta's glyphs, and we (i.e. Janek
and I) agreed upon that this would be a crucial thing for us to have.
It is to be expected that SMuFL compliant fonts will become available,
and if we're continuing in the direction of Nathan and improve our
adaptor to use SMuFL compliant fonts from LilyPond we should really
_have_ this compatibility. New SMuFL fonts will (other than the
reference font Bravura) not contain the complete glyph set and probably
not LilyPond's complete glyph set. But if we have glyphs in Feta that
aren't part of SMuFL we'll have the _guarantee_ that a SMuFL font won't
cover our whole range.
_If_ it is completely covered in the standard there is at least the
option to get appropriate fonts or (in case of a suitable license) to
extend an existing font.
I think it is good to have a choice to use other fonts in LilyPond.
While I very much like Feta and while I'm convinced of its quality
changing font would simply allow for a different appearance, which _is_
necessary in some situations (house style, appropriate style for certain
music etc.). So while a substantial redesign of LilyPond's font handling
definitely seems far away I think the SMuFL compatibility approach would
be a very useful first step.
Daniel Spreadbury explicitly said that there are some areas of old music
notation in Feta that he doesn't sufficiently understand to incorporate
into SMuFL. Probably he's particularly talking about the Kievan
notation, so I strongly ask that someone who is familiar with that area
get in touch with Daniel ASAP to give him the necessary information.
It would also be _very_ good if someone with the respective experience
could try to determine if there are other areas or spots in Feta that
aren't yet covered by SMuFL. I'm sorry, but I definitely can't do that,
but I'll gladly assist in getting information to the right place.
Best
Urs
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