I think I've found the culprit, I needed to revive LilyDev2 which is based upon
Ubuntu 10.04 with
GNU Make 3.81
gcc (Ubuntu 4.4.3-4ubuntu5.1) 4.4.3
First bad commit is
commit 1c24c56886cd85f04283ac61e8a0deea172035ed
Author: Mike Solomon <[email protected]>
Date: Wed Jan 18 08:22:31 2012 +0100
Prevents DotColumns from triggering VerticalAlignment
This is issue 2180
lilypond-version 2.15.27
And was meant to improve issue 1986
And was changed with issue 2468
Obviously the initially reported problem persisted and persists, but was never
detected until merge-rests-engraver.ly introduced simultaneous dotted rests for
more than two voices.
There may have been more changes after 2468, ofcourse.
What a mess ...
---
** [issues:#5217] random results for the merge-rests-engraver regression test**
**Status:** New
**Created:** Fri Oct 20, 2017 07:28 AM UTC by Knut Petersen
**Last Updated:** Fri Oct 27, 2017 07:42 PM UTC
**Owner:** Knut Petersen
**Attachments:**
-
[out-test-baseline-merge-rests-engraver.png](https://sourceforge.net/p/testlilyissues/issues/5217/attachment/out-test-baseline-merge-rests-engraver.png)
(23.8 kB; image/png)
-
[out-test-merge-rests-engraver.png](https://sourceforge.net/p/testlilyissues/issues/5217/attachment/out-test-merge-rests-engraver.png)
(23.7 kB; image/png)
There is some randomness in the placement of dots. The merge-rests-engraver.ly
regtest (git-version557dc7) exposes the problem as the output might be one of
the two attached pngs. The probability for both results is identical on my
system.
---
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