On Jan 16, 2022, at 15:36, Dan Eble <[email protected]> wrote:
>
> I have a mind to generalize the commands for Gregorian divisiones so that
> they create breathing signs, bar lines, or scripts over bar lines, according
> to context properties. That will serve this case and more, and requires no
> new terminology. \section and \finalis would be synonyms, but the other
> three can be left to the user to name as they please, for example,
>
> phraseDiv = \divisioMinima
This is how I see things taking shape. Most of this exists in prototype but
some is still speculative.
\caesura is promoted to a global command calling for a short break outside of
the notational timeline. It accepts arbitrary articulations, e.g.,
\caesura \fermata
Caesura_engraver operates in Staff context (but is removed from ancient
contexts) and engraves \caesura as a BreathingSign, optionally with scripts, or
as script(s) attached to a BarLine, depending on a convenient set of context
options and callbacks.
Bar_engraver supports options for inserting distinctive bar lines at \caesura.
In gregorian.ly,
virgula = { \once \override ... \caesura }
divisioMinima = { \once \override ... \caesura }
divisioMaior = { \caesura \shortfermata }
divisioMaxima = { \caesura \fermata }
finalis = \section
Divisio_engraver operates in ancient Voice contexts and reacts to the above as
required. (It ought to be Staff contexts, but I worry about breaking existing
scores.)
—
Dan
