- **status**: Accepted --> Duplicate
- **Comment**:
This is superseded by [#5547].
---
** [issues:#4740] Wrong beam subdivision when duration == baseMoment**
**Status:** Duplicate
**Created:** Mon Jan 11, 2016 11:44 AM UTC by Urs Liska
**Last Updated:** Mon Jan 11, 2016 11:44 AM UTC
**Owner:** Urs Liska
**Attachments:**
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[equal-base-moment-2-18-2.png](https://sourceforge.net/p/testlilyissues/issues/4740/attachment/equal-base-moment-2-18-2.png)
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[equal-base-moment-2-19-34.png](https://sourceforge.net/p/testlilyissues/issues/4740/attachment/equal-base-moment-2-19-34.png)
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[equal-base-moment-2-19-35.png](https://sourceforge.net/p/testlilyissues/issues/4740/attachment/equal-base-moment-2-19-35.png)
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Beam subdivision behaves wrongly when the duration of a stem equals
`baseMoment`.
The following example features two cases, one real-world example with mixed
durations and one beam with regular notes.
~~~~
\version "2.18.2"
\relative f' {
\set subdivideBeams = ##t
\set baseMoment = #(ly:make-moment 1/16)
g16 [ c ~ c64 b a g fis g a g ]
\set baseMoment = #(ly:make-moment 1/32)
g32 g g g g g g g
}
~~~~
Expected behaviour:
First beam: The first two stems (16) should be connected with two beams,
followed by a subdivision with one beam (during the tied note).
Second beam: sequence of 3-2-3-1-3-2-3 beams, exactly as if `baseMoment` was
set to `1/16`.
Actual behaviour with four versions:
First beam: Identically wrong with any version since 2.18.2.
Second beam:
* 2.18.2: Beamlet plus one beam (wrong)
* 2.19.20 ([4355](https://sourceforge.net/p/testlilyissues/issues/4355/)
applied): complicatedly wrong
* 2.19.34 (Commit 0382ed88 applied): Simplified and technically correct (but
not desired) output)
* 2.19.35 ([4704](https://sourceforge.net/p/testlilyissues/issues/4704/)
applied): Same as with 2.19.20
---
I will consider this in the context of
[4738](https://sourceforge.net/p/testlilyissues/issues/4738/)
---
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