Re: arrow heads as accidentals

Lajos,

My friend and colleague Dave Keenan — co-creator of Sagittal and has
contributed many microtonal accidentals to SMuFL in addition to of course
the Sagittal symbols — points out that these accidentals *are *already
present in SMuFL:

https://w3c.github.io/smufl/gitbook/tables/arrows-and-arrowheads.html
> U+EB88
> *arrowheadOpenUp*U+EB8C
> *arrowheadOpenDown*U+EB8A
> *arrowheadOpenRight*U+EB8E *arrowheadOpenLeft*


I hope this helps. Thanks for pushing for better microtonal notation
support!

Best,
Douglas

On Tue, Jun 16, 2020 at 9:49 AM Lajos Brons <mail@lajosbrons.net> wrote:

> Several microtonal notation systems use arrow heads (looking like ^, v,
>  >, <) as accidentals. These include:
>
> - Up/Down notation, which is more or less the standard notation in 22EDO
> and 31EDO, but also used elsewhere. Lacking ^ and v ("up" and "down")
> users often resort to other symbols, however.
> - Porcupine notation, which also uses ^ and v.
> - Helmholtz/Ellis/Wolf/Monzo (HEWM) notation, which uses all four arrow
> heads (hence, including "more" and "less" in addition to "up" and
> "down") as well a many other symbols.
>
> The addition of "up" and "down" (^ and v) accidentals to SMuFL is sorely
> needed, but it seems silly to not add right/more and left/less at the
> same time. Given that the latter two don't have standardized names, I
> propose to call those "more" and "less", respectively.
>
> Neither size and shape of these symbols is standardized (because users
> have to resort to various tricks to get anything resembling them), but
> in all cases they are intended to have the same size as a note head.
>
> In case of Up/Down notation and HEWM notation (but not Porcupine
> Notation), arrow heads are used on their own and in combination with
> other accidentals.
>
> I'm not sure where exactly these four new accidentals should be added,
> but "Other accidentals" seems the most obvious location.
>
> Best,
>
> Lajos Brons
>
>
>