Re: Gregorian.ly bar forms being converted to wrong glyph (regression between 2.22 and 2.24)

[Dan Eble]

On Mar 28, 2023, at 03:02, Jean Abou Samra <jean@abou-samra.fr> wrote:
> Le mardi 28 mars 2023 à 12:54 +1100, Grant Diffey a écrit :
>> The following example:
>> \include "gregorian.ly"
>>   { c' \divisioMaior d' \finalis }
>> Renders 'correctly' in 2.22 (using hacklily)
>> and incorrectly on my debian machine with Lilypond 2.24
> Dan?

LilyPond 2.24 expands \caesura to allow modern notational alternatives and 
makes "railroad tracks"/"tram lines" the default rendition in Staff.  The 
commands for the more significant divisiones are implemented as \caesura with a 
fermata to supply descriptive input for a potential MIDI performer.  \finalis 
is equivalent to \section.

Please try using one of the contexts designed for Gregorian chant.  They are 
described in the Notation Reference, and there are some highlights in the 2.24 
Changes document.

```
\version "2.24.1"

\include "gregorian.ly"

music = \fixed c' {
  c \caesura c
  d \virgula d
  e \divisioMinima e
  f \divisioMaior f
  g \divisioMaxima g
  a \finalis a
}

<<
  \new GregorianTranscriptionStaff {
    \music
  }
  \new GregorianTranscriptionStaff \with {
    \EnableGregorianDivisiones
  } {
    \music
  }
  \new MensuralStaff {
    \music
  }
  \new VaticanaStaff {
    \music
  }
>>
```

Regards,
— 
Dan