Please consider adding support for quarter tone accidentals.
These include the Western notation for half-sharp, half-flat, sharp-and-a-half and flat-and-a-half, all of which are explained on https://en.wikipedia.org/wiki/Accidental_%28music%29#Microtonal_notation (and a picture us also available).
These also include the Iranian notation for half-sharp and half-flat, which are depicted in Persian Wikipedia's pages on sori and koron, respectively.
Ideally, a different identifier should be used for the western and eastern half-notes, so they can coexist in the same sheet if need be. An example of when this is needed is when sheet music is being written for many instruments (as is used by conductors) some of which are oriental instruments and some western instruments but all can play quarter tones.
-- UPDATE --
As shown below, vexflow already supports the Western quarter tone accidentals. There is need for support of Iranian accidentals though.
Please consider adding support for quarter tone accidentals.
These include the Western notation for half-sharp, half-flat, sharp-and-a-half and flat-and-a-half, all of which are explained on https://en.wikipedia.org/wiki/Accidental_%28music%29#Microtonal_notation (and a picture us also available).
These also include the Iranian notation for half-sharp and half-flat, which are depicted in Persian Wikipedia's pages on sori and koron, respectively.
Ideally, a different identifier should be used for the western and eastern half-notes, so they can coexist in the same sheet if need be. An example of when this is needed is when sheet music is being written for many instruments (as is used by conductors) some of which are oriental instruments and some western instruments but all can play quarter tones.
-- UPDATE --
As shown below, vexflow already supports the Western quarter tone accidentals. There is need for support of Iranian accidentals though.