fiapps
commented
2 weeks ago I understand the priest option to mean that a priest is leading the office as hebdomadarian. This understanding works with the 1960 rubrics and would mean "Jube, domne" should be used when priest != 0. I'm not familiar with the older rubrics, so I don't know what should happen if a deacon leads the office or a priest or deacon prays the office on his own. In any case, I doubt the flag can be given a meaning that a short label will fully explain.
The title isn't so clear, so let me explain.
Matins, Prime, and Compline have "Jube, Domne," benedicere" before the readings where the lector asks for a blessing of the officiant in choir. But the breviary is clear: Extra Chorum, quando ab uno tantum recitatur Offiicum, ante singulas Lectiones Matutini atque ad Lectionem brevem Primae et Completorii, dicitur: Jube, Domine, benedicere; et subjungitur congruens Benedictio.
However, the collects are always preceded by "Domine, exaudi orationem meam" etc. as if it was a choir of nuns or of clerics not yet deacons, particularly for DA and before where even priests recite "Dominus vobiscum" when alone and outside of choir. We may not like that people including clerics say the DA office exclusively, but what they do isn't for us to police, and the site should actually reflect the rubrics as they are, regardless of the juridical status of the pre-1954 breviary. I know that there is a box to check for "priest" (but this doesn't make a ton of sense either, because in the 1960 office, the priest only says "Dominus vobiscum" in public, and IMHO, if accuracy is the goal, then the label should say "Priest (deacon (DA/Tridentine)".
So what currently happens is not entirely coherent to me if the idea that the office is as if it's being recited alone by someone not a cleric…and let's be honest, I don't think that it's obvious to change from "Domne" to "Domine", even for someone fairly skilled in Latin, with the ideal level to read the breviary in Latin — which is why a rubric exists.
It's currently a mish-mash of the choir rubrics, which I grant are the default texts of the breviary in the Ordinary and, at Prime and at Compline, even in the psalter, and of private recitation.