Mark Knoop <[email protected]> writes:
> At 20:20 on 14 May 2025, James Harkins wrote:
>> \tempo \markup { \rhythm { 8 } = \rhythm { 8 } }
>
>> Lilypond does not like it one bit:
>
>> ./common/globals.ily:139:28: error: wrong type for argument 1. Expecting
>> music, found (ly:make-duration 3)
>> \tempo \markup { \rhythm
>> { 8 } = \rhythm { 8 } }
>
>> Now I didn't think I differed *so much* from the docs example, but
>> apparently I've done something wrong.
>
> Your syntax works for me with 2.25.25 - are you sure you're running
> the same version as the docs you're reading?
The docs James quoted stated
\relative {
\tempo \markup {
Swing
\hspace #0.4
\rhythm { 8[ 8] } = \rhythm { \tuplet 3/2 { 4 8 } }
}
b8 g' c, d ees d16 ees d c r8
}
which can only interpret the \rhythm arguments as music. The
disambiguation necessary for accepting { 8 } was added in version 2.25.0
with
commit 276d688a358ff49e04b8b18e91ac15d56276cb62
Author: Jean Abou Samra <[email protected]>
Date: Sun Dec 18 18:27:24 2022 +0100
Accept bare pitches/durations as music arguments to markup commands
This adds a tiny bit of the smart argument handling music functions have to
markup commands. Namely, if a command expects a Scheme argument (i.e., the
predicate is not markup? or markup-list?), and { <pitch> } or { <duration>
} is
passed, the music interpretation as note event of those constructs is tried
as
well against the predicate. The most obvious use case is
\markup \rhythm { 8. }
The original commit implementing \rhythm in version 2.23.11 listed the
original limitation:
commit fd36c2f4e62a9a8122712e489b17d7227c6571a1
Author: Jean Abou Samra <[email protected]>
Date: Wed Jul 6 19:21:45 2022 +0200
Add \rhythm markup command
\rhythm takes a music expression and typesets it using an embedded
score, which is mostly useful for tempo specifications. This feature
has asked about frequently (last time today on -user-fr), and is found
in the popular LSR snippets https://lsr.di.unimi.it/LSR/Item?id=204
and https://lsr.di.unimi.it/LSR/Item?id=1029
Its internals are powered by new context types,
StandaloneRhythmic(Score|Staff|Voice). One reason is to allow global
tweaks with \layout { \context { \StandaloneRhythmicXXX ... } }.
Another is to avoid settings from stylesheets made with \context {
\Voice ... } being applied to \rhythm accidentally, as they're likely
not intended there. They can be applied to StandaloneRhythmicVoice
explicitly if needed.
Known issue: \rhythm { 8 } does not work because 8 is interpreted as a
duration. One has to use \rhythm { { 8 } }.
Fixes #6221
--
David Kastrup
