Hello Leszek,
Oops, looks like I totally misunderstood the kind of help you were looking for…
Sorry for the noise!
JM
> Le 22 nov. 2015 à 17:37, Jacques Menu <imj-muz...@bluewin.ch> a écrit :
>
> Hello Leszek,
>
> Here is an example from this list.
>
> JM
>
>
>
> \version "2.18.1"
>
> \layout {
> indent = 0
> ragged-right = ##t
> \context {
> \Staff
> \consists "Custos_engraver"
> % \override Staff.Custos.stencil = ##f
> % \override Staff.Custos.style = ##f
> }
> }
>
>
> \relative c' {
> d1
>
> \once\override Staff.Custos.style = #ly:custos::print
> \break
>
> a'1
>
> \once\override Staff.Custos.stencil = ##f
> %\revert Staff.Custos.stencil
> %\revert Staff.Custos.style
> \break
>
> a'1
>
> \break
>
> g1
>
> \once\override Staff.Custos.style = #ly:custos::print
> \break
>
> f1
>
> \break
>
> e1
> }
>
>
> \relative c' {
> d1
> b1
> % \revert Staff.Custos.stencil
> % \revert Staff.Custos.style
> \once\override Staff.Custos.style = #ly:custos::print
> % \override Staff.Custos.style = #ly:custos::print
> \break
> a'1
> % \override Staff.Custos.stencil = ##f
> \once\override Staff.Custos.stencil = ##f
> \break
> f'1
> \break
> d1
> \once\override Staff.Custos.style = #ly:custos::print
> \break
> c1
> \break
> b1
> }
>
>
>> Le 22 nov. 2015 à 16:41, Leszek Wroński <elw...@gmail.com
>> <mailto:elw...@gmail.com>> a écrit :
>>
>> I was delighted to learn that Lilypond allows one to use custodes. I was
>> wondering how they really work, namely, how one can, upon a linebreak, check
>> what the next pitch is. I have limited Scheme experience. I first tried the
>> code for the first example from here:
>> http://www.lilypond.org/doc/v2.19/Documentation/notation/typesetting-mensural-music
>>
>> <http://www.lilypond.org/doc/v2.19/Documentation/notation/typesetting-mensural-music>
>> and enclosed it (that is, the part inside "\score { } ") in "\displayMusic{
>> }" . But this, while enlightening in some respects, didn't really tell me
>> what's going on when the custos is to be displayed. So I downloaded the
>> source code, and after grepping found two files of interest: custos.cc
>> <http://custos.cc/> and custos-engraver.cc <http://custos-engraver.cc/> . In
>> the latter I found an expression headed by
>>
>> "void
>> Custos_engraver::acknowledge_note_head (Grob_info info)"
>>
>> (line 83). Could anyone tell me if I'm on the right track? My problem is
>> that, while I'm willing to learn, I have a very limited experience with C++
>> and with any object programming whatsoever (having spent much time decades
>> ago with Turbo Pascal 5 :-)). I'd be very grateful for any pointers
>> regarding what happens during a linebreak (and, in general, how one should
>> learn such things).
>>
>> Best regards,
>>
>> Leszek Wronski.
>>
>>
>> _______________________________________________
>> lilypond-user mailing list
>> lilypond-user@gnu.org <mailto:lilypond-user@gnu.org>
>> https://lists.gnu.org/mailman/listinfo/lilypond-user
>
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