RE: Time signature differs from measure length

[Mark Stephen Mrotek]

Simon,

Regarding the snippet you provide, I would be confused in reading it. The "₵" 
would tell me 2/2, yet there would be four semi-breves.

Does this do what you want?

\version "2.18.0"
timeTwoOne = {
  \once \override Staff.TimeSignature.stencil =
  #(lambda (grob)
     (grob-interpret-markup grob
      #{ \markup { \musicglyph #"timesig.C22" \musicglyph #"timesig.C22" } #}))
  \time 2/1
}
\relative c' {
  \timeTwoOne 
  r2 g g g | f f g b | b a b1
  }

Mark

-----Original Message-----
From: Simon Albrecht [mailto:address@hidden 
Sent: Friday, October 10, 2014 12:13 PM
To: Noeck; Mark Stephen Mrotek; lilypond-user
Subject: Re: Time signature differs from measure length

Am 10.10.2014 um 12:45 schrieb Noeck:
>> -----Original Message-----
>> I want to write a piece with a alla-breve time signature but with 
>> four half notes in a measure (4/2).
>>
>> Is it better to overwrite the time signature stencil and use \time 4/2 or do 
>> it like this:
>>
>> \version "2.18.2"
>>
>> \relative c'' \scaleDurations 1/2 {
>>    \time 2/2
>>    r2 g g g | f f g b | b a b1
>> }
>> Noeck,
>>
>> http://lists.gnu.org/archive/html/lilypond-user/2014-09/msg00603.html
>> might be of help.
>>
>> Mark
> Thanks. I should have found this.
> My main question which solution is more correct? Scaling the durations 
> or changing the printed time signature?
For the printed output it doesn’t matter. Scaling the durations seems most 
tedious to me, and overriding the stencil is also more complicated than a third 
possibility:
\time 2/2
\set Timing.measure-length = #(ly:make-moment 4 2) But it’s up to which coding 
you prefer, actually. To me, a really "correct" solution would be \override 
TimeSignature.style – but this works only for \time 4/4 and \time 2/2. So you 
need to use something more intrusive.

Best, Simon