does anybody know about these accidentals?

[Werner LEMBERG]

>> we wonder about the origin of the following two characters:
>> 
>>   𝄲 U+1D132 MUSICAL SYMBOL QUARTER TONE SHARP
>>   𝄳 U+1D133 MUSICAL SYMBOL QUARTER TONE FLAT
>> 
>> The original proposal to encode them in Unicode is
>> https://unicode.org/L2/L1998/98045.pdf – alas, the contained scans
>> don't cover those two characters, and I don't have access to the cited
>> books.
> 
> Well, thanks to the internet I was able to actually check the cited
> references (Read, Heussenstamm, Rastall, Stone), and *none* of them
> actually contain these accidentals!
> 
> Sigh.  Does anybody have an e-mail address of the proposal's author,
> Perry Roland?  Maybe he can remember...

Found it – I've CCed him.  Perry, please comment!


    Werner