[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #4691 Dynamics attached to spacer rests mess up stems with cross-staff kneed beams

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• summary: autochange vs. invisible rest --> Dynamics attached to spacer rests mess up stems with cross-staff kneed beams
• Attachments has changed:

Diff:

--- old
+++ new
@@ -1 +1,3 @@
 4691.png (21.5 kB; image/png)
+test1.png (13.0 kB; image/png)
+test2.png (10.2 kB; image/png)

• Comment:

Actually, you don’t even need \autoChange to reproduce the bug:

<<
  \new Staff {
    c'''16[ c''' c''' \change Staff = "z" c']
  }
  \new Staff = "z" { s4\p }
>>

Not only is the beam messed up, the Stem is misaligned as well:

<<
  \new Staff {
    c'''8[ \change Staff = "z" c']
  }
  \new Staff = "z" { s4\p }

This produces a whole lot of errors and warnings:

programming error: Grob direction requested while calculation in progress.
warning: no viable initial configuration found: may not find good beam slope
programming error: No viable beam quanting found.  Using unquanted y value.
warning: weird stem size, check for narrow beams
warning: Not drawing a box with negative dimension

(Reproduced with 2.21.0)

---

[issues:#4691] Dynamics attached to spacer rests mess up stems with cross-staff kneed beams

Status: Accepted
Created: Fri Dec 11, 2015 12:48 PM UTC by Palmer Ralph
Last Updated: Sun Dec 13, 2015 10:51 PM UTC
Owner: nobody
Attachments:

• 4691.png (21.5 kB; image/png)
• test1.png (13.0 kB; image/png)
• test2.png (10.2 kB; image/png)

Gilberto Agostinho wrote :

Here is a bizarre little bug I came across today: for some reason, an invisible rest on a different Staff seems to affect the kneed beamed stems on a PianoStaff when using \autochange. See:

\version "2.19.28"

A = { c'''16[ c''' c''' c] }

B = { s4\p }

C = { r4\p }

<<
  \new PianoStaff \autochange \A
  \new Staff \B
>>

<<
  \new PianoStaff \autochange \A
  \new Staff \C
>>

Output attached.

---

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