Le 02/04/2021 à 10:28, Thomas Morley a écrit :
Hi,
consider the following code:
\version "2.23.1"
\paper { ragged-right = ##t }
{
\override TrillSpanner.springs-and-rods = #ly:spanner::set-spacing-rods
\override TrillSpanner.minimum-length-after-break = 60
\override TrillSpanner.minimum-length = 60
\override TrillSpanner.after-line-breaking = ##t
b1\startTrillSpan \break b\stopTrillSpan
}
I see two bugs here:
(1)
Setting after-line-breaking = ##t should enable printing the
TrillSpanner on second line.
It does not - for every tested version, starting with 2.12.3.
(2) minimum-length-after-break takes affect on second line although
TrillSpanner is not continued there.
If minimum-length-after-break is unset, minimum-length is applied to
the not printed part of the broken TrillSpanner.
This happens even if after-line-breaking = ##f
We currently have seven grobs with after-line-breaking set to
ly:spanner::kill-zero-spanned-time:
DurationLine, Glissando, Hairpin, LyricHyphen, TrillSpanner,
VoiceFollower and VowelTransition
TrillSpanner is the only one with bug (1)
All of them suffer from bug (2)
Cheers,
Harm
Hi Harm, Regarding bug (1): maybe this is because there is not enough
room for the TrillSpanner? Looking at the output of
\version "2.22.0" \paper { ragged-right = ##t } { \override
TrillSpanner.springs-and-rods = #ly:spanner::set-spacing-rods
\override TrillSpanner.minimum-length-after-break = 100 \override
TrillSpanner.minimum-length = 100 b1\startTrillSpan \break b b
b\stopTrillSpan } I can see that the "Tr" mark is placed just above the
note. I applied the following diff:
diff --git a/lily/line-spanner.cc b/lily/line-spanner.cc index
cc848d4cc7..48679448f2 100644 --- a/lily/line-spanner.cc +++
b/lily/line-spanner.cc @@ -331,9 +331,11 @@ Line_spanner::print (SCM
smob) Offset dz_dir = dz.direction (); if (gaps[LEFT] +
gaps[RIGHT] > dz.length ()) { + message ("Not enough room for
line spanner."); return SCM_EOL; } + message ("About to
print line spanner"); Stencil line; for (LEFT_and_RIGHT (d)) {
Then, on the example
\version "2.22.0" \paper { ragged-right = ##t } { \override
TrillSpanner.springs-and-rods = #ly:spanner::set-spacing-rods
\override TrillSpanner.minimum-length-after-break = 50 \override
TrillSpanner.minimum-length = 50 \override
TrillSpanner.after-line-breaking = ##t b1\startTrillSpan \break
b\stopTrillSpan } I get the log:
Drawing systems...
Refusing to print line spanner because it is too short.
About to print line spanner
Not sure if something can be done about this.
Bug (2) is clearly unexpected. Though, I can see that VowelTransition
does ignore minimum-distance-after-break when invisible, at least in
this test case:
\version "2.23.2" { c1 1 } \addlyrics { Ah \tweak
minimum-length-after-break 100 %\tweak after-line-breaking ##t
\vowelTransition \break oh }
There is code in lily/vowel-transition.cc that accesses
after-line-breaking. ly:spanner::set-spacing-rods should probably do
something along the same lines.
Best regards, Jean
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