Re: [PATCH] support for flagged crotchets in mensural notation

[Lukas Pietsch]

Benkő Pál <benko.pal <at> gmail.com> writes:

> 
> as far as I know when flagged notes with hollow heads are used, they are
> used exclusively, i.e. there are no black notes at all (more precisely, all
> black notes count as notae coloratae, which is a separate notehead style
> anyway, and from duration point of view they behave just as their hollow
> counterparts, i.e. a note with one flag is a semiminima, etc.).

Not necessarily. See, for example, here:
http://www.chmtl.indiana.edu/tml/15th/TINPRO_02GF.gif and
http://www.chmtl.indiana.edu/tml/15th/TINPRO_17GF.gif. It's got
hollow/single-flagged crotchets, and then black/single-flagged quavers
(those aren't notae coloratae, of course). This would be one of the
intermediate forms I'd like to be able to support ("mensural-blacklevel =
3"). Apel discussed further variants in the context of 16th-century
instrumental tablatures, where you might get things like
hollow/double-flagged quavers followed by black/double-flagged semiquavers
(in my proposed system: "mensural-blacklevel = 4")

> so I suggest to use a symbolic style property for heads and stems each,
> to decide whether head coloring is mixed (the current system with flagging
> starting at fusa - 8) or consistent hollow/black (and flagging starting at
> semiminima - 4).

Based on the examples I gave, I think I'd still prefer to have a numeric
rather than a boolean property, to be able to determine each of the possible
cutoff points between the two conventions. 

Lukas