Re[2]: possible bug?

[E Appeldoorn]

Thanks Lukas (and others)
but after applying \override Score.SpacingSpanner.strict-grace-spacing = 
##t the score still gets squashed and mangled. It is a larger and 
complex score (Thanks to B Britten) and sometimes a solution in one bar 
creates an error in an other. I still lean towards it being a bug.

PS I did not expect to get stuck, but it seems that the end result in 
this score leaves to be desired.


------ Origineel bericht ------
Van: "Lukas-Fabian Moser" <lfm@gmx.de>
Aan: "E Appeldoorn" <ursus.kirk@gmail.com>; "lilypond-user@gnu.org" 
<lilypond-user@gnu.org>
Verzonden: 25-12-2021 20:44:22
Onderwerp: Re: possible bug?

> And one addition:
>
> > I did try the options you then gave me. (context \score \override 
> > SpacingSpanner.strict-note-spacing = ##t and also \override 
> > Score.SpacingSpanner.strict-grace-spacing = ##t)
>
> The relationship between those two settings is not at all obvious from the 
> documentation:
>
> https://lilypond.org/doc/v2.22/Documentation/internals/spacing_002dspanner_002dinterface
> https://lilypond.org/doc/v2.22/Documentation/notation/changing-horizontal-spacing.html#strict-note-spacing
> https://lilypond.org/doc/v2.22/Documentation/notation/special-rhythmic-concerns#grace-notes
>
> But in fact, if I read the source correctly,
>
> strict-grace-spacing = ##t
>
> is strictly weaker[1] than
>
> strict-note-spacing = ##t.
>
> So, in your use case: You can forget about strict-note-spacing, since the 
> behaviour that interests you is controlled by strict-grace-spacing, and 
> strict-note-spacing does the same thing *and more*.
>
> Lukas
>
> [1] For future reference: The two booleans are translated in 
> lily/spacing-options.cc into
>
> float_nonmusical_columns_ for strict-note-spacing
> float_grace_columns_ for strict-grace-spacing
>
> which both are used
>
> 1) in lily/spacing-determine-loose-columns.cc: treat grace columns as loose if 
> _either_ of the two properties is true,
> 2) in lily/spacing-spanner.cc: handle actual non-musical columns; here, only 
> float_nonmusical_columns_ is used.