> I try to set this ligature for an incipit:
>
>
> using
>
> ```
> \version "2.24.0"
>
> {
> \override NoteHead.style = #'mensural
> \[ a'1 c''
> \override NoteHead.ligature-flexa = ##f
> a'\breve \]
> }
>
> \layout {
> \context {
> \Voice
> \remove "Ligature_bracket_engraver"
> \consists "Mensural_ligature_engraver"
> }
> }
> ```
>
> results in a flexa ligature for the end c-a instead of quadratic
> (which is the default according to the manual) - but even with
> \override NoteHead.ligature-flexa = ##f it doesn't change.
>
> How can I achieve this?
Pál, can you please comment? It looks as if support for this ligature
form is missing...
Werner
Examples :
%SSL: no flexa
\[ a'1 \melisma c'' a'\longa \melismaEnd \]
%SSB: no flexa because of ascending brevis
\[ a'1 \melisma c'' d''\breve \melismaEnd \]
%SSB: flexa because of descending brevis
\[ a'1 \melisma c'' a'\breve \melismaEnd \]
This 'rule' for the last example is hard-coded in
mensural-ligature-engraver.cc (?)
//
// 4. end, descendens
else if (i == s - 1 && pitch < prev_pitch)
{
// brevis; previous note must be turned into flexa
if (duration_log == -1)
{
if (prev_brevis_shape)
{
make_flexa = true;
general_case = false;
}
else
{
nr->warning (_ ("invalid ligatura ending:\n"
"when the last note is a descending brevis,\n"
"the penultimate note must be another one,\n"
"or the ligatura must be LB or SSB"));
prim = MLP_NONE;
break;
}
}
//
I have zero knowledge of the underlying music theory here. Just doing this for
learning purposes ;-)
But if there is a template, one should be able to reproduce this with lilypond,
I think.
Here is a clumsy workaround (again struggling with the alignment...)
%%%%%%%%%%%%
\version "2.24.0"
% hide flexa and print square noteheads
sqr =
#(define-music-function (x-trans music) (number? ly:music?)
(let*(
; single note expected
(pitch (car (music-pitches music)))
; calculate y-position in staff
(steps (ly:pitch-steps pitch))
(y-off (- (* 1/2 steps) 3))
; easier solution to align properly?
(trans (cons x-trans 0.0)))
#{
\once \override TextScript.Y-offset = #y-off
\once \override TextScript.outside-staff-priority = ##f
\once \hideNotes
$music
-\markup { \translate $trans \halign #LEFT \musicglyph
"noteheads.srM1mensural" } #} ))
{
\override NoteHead.style = #'mensural
\[ a'1 \melisma \sqr #-0.130 c'' \sqr #-0.195 a'\breve \melismaEnd \]
}
\layout {
\context {
\Voice
\remove "Ligature_bracket_engraver"
\consists "Mensural_ligature_engraver"
}
}
%%%%%%%%%%%%
Hope that makes any sense, Juergen.
