Re: Enhancement: command line option to transpose N halftones up or down

[Marc Hohl]

Am 16.03.2015 um 16:09 schrieb Simon Albrecht:
> Hello Michael,
>
> I think this question is more appropriate for the -user list.
> Since I usually call lily from inside frescobaldi, my solution to this
> has been defining a variable for the resulting pitch:
>
> \version "2.18"
>
> newTonic = des
> music = \relative { c' }
>
> \score {
>    \transpose c \newTonic \music
> }
>
> %%%%%%%%%%%%%%
>
> Anyone else knowing how to get this via the commandline? I seem to
> recall there was some possibility for custom options or something.

I have done something like that some time ago.

I put these definitions in an include file:
#(define opt-octave (or (ly:get-option 'octave) 0))
#(define opt-note (or (ly:get-option 'note) 0))
#(define opt-alteration (or (ly:get-option 'alteration) 0))

#(define to-pitch (ly:make-pitch opt-octave opt-note opt-alteration))

optionalTranspose = #(define-music-function (parser location music) 
(ly:music?)
  #{ \transpose c' $to-pitch  $music #})

In the main file, you can use

\optionalTranspose { ...your music ...}

It is a bit cumbersome to specify

lilypond -dopt-octave=... -dopt-note=--- -dopt-alteration=... <filename.ly>

for each file, but aas I used this in a bash script to transpose a tune 
in *all* keys, it didn't matter.

HTH,

marc


> HTH, Simon
>
> Am 16.03.2015 um 15:02 schrieb Michael Schuerig:
> > I've only been using LilyPond for a rather short time, so far mostly for
> > engraving short snippets transposed into several keys for practicing. Of
> > course, the transpose command works nicely for this.
> >
> > However, it made me think of how transposing could be even nicer and
> > now I'm
> > wishing for a command line option to the lilypond command to transpose
> > the
> > engraved document by N halftones up or down. The particular advantage
> > would
> > be that this way the original document doesn't need to be changed in
> > any way
> > in order to transpose it.
> >
> > Does this sound reasonable?
> >
> > Michael
> >
> >
> >
> > _______________________________________________
> > bug-lilypond mailing list
> > address@hidden
> > https://lists.gnu.org/mailman/listinfo/bug-lilypond
>
>
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