Re: "loco" after ottava

[Jean Abou Samra]

[Valentin]

> The OttavaBracket looks like a line-spanner, but it isn’t! It doesn’t even
> follow the spanner interface (between notes)


It does ...? OttavaBracket is not an item, therefore it is a spanner.
Anything with bounds is a spanner (and consequently has spanner-interface).


> If for example we were to transpose the part up we would want to extend the
> ottava indication so it also encompasses some notes marked as loco. If we were
> to transpose it down we might not use the ottave indication at all (or only
> for a shorter section), but we would still put the loco in the same place.


I don't understand. The purpose of "loco" is to remind
that the ottavation indication has ended and notes are
played at their normal octave.


> So why not do it like this:
>
> {
>    c'' e'' g'' c'''
>    \ottava #1
>    e''' g''' c''''2
>    g'''4 c'''' g'''2
>    \ottava #0
>    c'''4^\markup\italic"loco" g'' e'' c''
> }



Agreed.


Le 03/12/2022 à 13:26, Thomas Morley a écrit :
> Hi Joel,
>
> as Jean and Valentin already said, use simple TextScript to indicate
> "loco", although it is indeed superfluous.
> To be complete, it is possible to make your override work.
> Switch OttavaBracket.stencil to ly:line-spanner::print. NR has a
> snippet for the method.
> Adapted to the case at hand:
>
> \version "2.23.0"


2.23.80, I suppose? horizontal-line-spanner is new in 2.23.6.


> ottavaBracketLineSpanner = {
>    \override Staff.OttavaBracket.stencil = #ly:line-spanner::print
>    \override Staff.OttavaBracket.bound-details =
>      #`((left . ((Y . 0)
>                  (attach-dir . ,LEFT)
>                  (padding . 0)
>                  (stencil-align-dir-y . ,CENTER)))
>         (right . ((Y . 0)
>                   (padding . 0)
>                   (attach-dir . ,RIGHT)
>                   (stencil-align-dir-y . ,CENTER))))
>    \override Staff.OttavaBracket.left-bound-info =
>       #ly:horizontal-line-spanner::calc-left-bound-info-and-text
>    \override Staff.OttavaBracket.right-bound-info =
>       #ly:horizontal-line-spanner::calc-right-bound-info
> }
>
> {
>    r4
>    \ottavaBracketLineSpanner
> %% Format "loco" with usual markup-commands to taste
>    \override Staff.OttavaBracket.bound-details.right.text = "loco"
>    \ottava 1
>    c''' d''' e''' |
>    \ottava 0
>    r e' d' c'
> }
>
> Though, I don't see a good way to place the end of the OttavaBracket
> in a pleasing way. The downpointing hook at line-end is gone as well.
> Even if you extend the "loco"-markup to print it, it's not convincing,
> imho.


Agreed, note^"loco" is the way to go.


> Furthermore, the snippet from NR as well as the one above emit several
> programming errors if compiled with -dcheck-internal-types
>
> Btw, I can't find -dcheck-internal-types in the 2.23.-docs any more
> and was not able to find out why.
>
> Anyone with more insight?



In such cases, use

$ git log -S "check-internal-types"


You will find that there was


commit a1dead391ed016a8aefd1be7fb62946e094b4535
Author: Han-Wen Nienhuys <hanwenn@gmail.com>
Date:   Sat Feb 26 12:19:32 2022 +0100

    Add internal/external distinction to -d flags


then


commit 264570e68ea13b06c1b9dd88c491948979926aa1
Author: Han-Wen Nienhuys <hanwenn@gmail.com>
Date:   Sun Apr 3 12:45:51 2022 +0200

    Documentation: remove documentation for internal options


Best,
Jean

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