Jean,
As always, thanks very much for the help and the quick reply!
best,
LT
On Mon, Aug 5, 2024 at 12:44 PM Jean Abou Samra <j...@abou-samra.fr> wrote:
> Le lundi 05 août 2024 à 11:18 -0700, l t a écrit :
> > Hi,
> > Wondering if it is possible to have lilypond produce a working relative
> url
> > link on a pdf, where, if I had a file in the same directory as the
> outputted
> > PDF, I could do something like this:
> > \markup { \with-url #"test.mid" }
> > or
> > \markup { \with-url #"./test.mid" }
> > or
> > \markup { \with-url #"/test.mid" }
> >
> > The first one sort of works while still viewing the output within
> Frescobaldi
> > (although the actual directory it searches was different than what I
> expected),
> > but none work in the final PDF output.
>
>
> You cannot get a relative link into the PDF output. I just checked
> the PDF 1.7 specification and I was surprised to find that the PDF
> format supports it (I didn't check whether common PDF readers actually
> understand it), but LilyPond has no support for outputting that.
>
> On the other hand, you can do
>
> \markup \with-url "file:///home/you/absolute/path/to/file.mid"
>
> for an absolute path. You can automate adding the absolute path
> of the directory that contains the current input file using a simple
> variant of the \withRelativeDir command that was added in version 2.25.12:
>
> \version "2.24.4"
>
> fileURL =
> #(define-scheme-function (file-name) (string?)
> (let* ((input-file (car (ly:input-file-line-char-column (*location*))))
> (input-dir (dirname input-file)))
> (string-append "file://" input-dir file-name-separator-string
> file-name)))
>
> \markup \with-url \fileURL "mystery-principle.v" "foo"
>
>
> This doesn't give a true relative URL, because it will keep pointing to the
> original target even if you move the PDF file around, but might be good
> enough
> for your use case.
>
> Best
> Jean
>
>
