Re: Lilypond svg output to stdout?

[David Wright]

On Sun 03 May 2020 at 12:22:31 (+0200), Valentin Villenave wrote:
> On 4/30/20, David Wright <address@hidden> wrote:
> > On Thu 30 Apr 2020 at 21:58:28 (+0200), Marcel Aartsen wrote:
> > I don't think you can use stdout itself, as LP already uses it.
> 
> Well, there *used* to be some work towards something like that; see
> the framework-socket.scm file in LilyPond’s source code…
> 
> > I haven't tested whether LP *insists* on adding an .svg extension.
> 
> It does, but that can be overriden:
> https://lists.gnu.org/archive/html/lilypond-user/2019-12/msg00414.html

Probably hardly worth the effort in this case (and when using files,
it's easy enough to rename them).

BTW I tested my example just by catting the pipe (to let LP run to
completion) and piping the output into less as the consumer (to save
it spewing onto the terminal).

I ought to make it clear that it was intended for the SVG-consumer
to normally be a program, like inkscape. So summarising:

  $ mkfifo foo.svg
  $ lilypond -dbackend=svg -o foo music.ly

  $ inkscape foo.svg

on two terminals, or

  $ mkfifo foo.svg
  $ lilypond -dbackend=svg -o foo music.ly &
  $ inkscape foo.svg

on one.

Sometime, perhaps, I'll try it on two machines, using a socket.

Cheers,
David.