On 5/15/2018 2:46 PM, Markus Scherer via Unicode wrote:
I am proposing the addition of 2 new characters to the Musical
Symbols table:
- the half-flat sign (lowers a note by a quarter tone)
- the half-sharp sign (raises a note by a quarter tone)
In an actual proposal, I would expect a discussion of whether you are
proposing to encode established symbols, or whether you are proposing
new symbols to be adopted by the community (in which case Unicode
would probably wait & see if they get established).
A proposal should also show evidence of usage and glyph variations.
And should probably refer to the relationship between these signs and
the existing:
U+1D132 MUSICAL SYMBOL QUARTER TONE SHARP
U+1D133 MUSICAL SYMBOL QUARTER TONE FLAT
which are also half-sharp or half-flat accidentals.
The wiki on flat signs shows this flat with a crossbar, as well as a
reversed flat symbol, to represent the half-flat.
And the wiki on sharp signs shows this sharp minus one vertical bar to
represent the half-sharp.
So there may be some use of these signs in microtonal notation, outside
of an Arabic context, as well. See:
https://en.wikipedia.org/wiki/Accidental_(music)#Microtonal_notation
--Ken