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## [Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] Re: #3208 Wron

 From: Auto mailings of changes to Lily Issues via Testlilyissues-auto Subject: [Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] Re: #3208 Wrong MultiMeasureRest glyph Date: Sat, 13 Jan 2018 16:59:45 -0000

Undotted quarter would match the principles of mensural notation
(rests are never dotted and always perfect if mensuration says so);
half would be the result of scaling the "whole rest in 3/4 time"
principle.

Mensural notation has perfect and imperfect division, yes, but only for
maxima, longa, brevis and semibrevis (= whole) notes/values. So I see no
point in having undotted minima and seminiminma (half and quarter) rests:
this principle of mensural notation doesn’t apply to these values.

Yes, that's why I said "principles", not "rules" or "practice". I
think the same principle works when Bach uses 9/8 in one part, 3/4 in
another (e.g. Jesus bleibet meine Freude in BWV147) or 12/8 in one
part, 4/4 in another (e.g. Mein teurer Heiland in Johannespassion).
But it's definitely not extended to multi-measure rests, as the
examples above prove.

I changed my mind: Allowing shorter rests doesn’t harm—no one has to use
positive numbers in usable-duration-logs but if someone really wants to do
it even though Gould et al. disadvise, we shouldn’t take away this
functionality.

This also means that we don’t need such a boolean grob property: Instead you
can just override usable-duration-logs to #'(0) as it has been done in every
Yay, backwards-compatibility! ;)

Of course we could discuss whether it would be nice to have a shorthand like

modernMMRs = \override MultiMeasureRest.usable-duration-logs = #'(0)

Oh, these are all great!

[issues:#3208] Wrong MultiMeasureRest glyph

Status: Started
Created: Wed Feb 27, 2013 03:07 AM UTC by Anonymous
Last Updated: Sat Jan 13, 2018 03:08 PM UTC
Owner: Malte Meyn
Attachments:

Originally created by: *anonymous

Thomas Morley reported here:

http://lists.gnu.org/archive/html/bug-lilypond/2013-02/msg00180.html

as follows:

With measures longer than two whole notes LilyPond chooses different
glyphs for MultiMeasureRest.

```\version "2.17.12"

\new Staff {
\compressFullBarRests

\time 7/4
R1*7/4
R1*7/4*2

\break

\time 9/4
R1*9/4
R1*9/4*2
\break

\time 18/4
R1*18/4
R1*18/4*2
}
```

Discussion on the user-list:
http://lilypond.1069038.n5.nabble.com/Glyph-for-longer-MultiMeasureRest-td141438.html

According to Gould LilyPond's default seems to be correct.
Werner objects.

At least there's need for discussion, I think.

Attached an image showing "LilyPond's default" vs "Correct?"

Regards,
Harm

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