Urs:
...
OTOH: is it possible to have LilyPond trigger an external program
*after* the PDF has been created? I recall getting an answer for a hook
that works at the very end of the engraving process (this should allow
me to write out data into a log file that has only been generated during
the after-line-breaking stage). Is there such a hook to execute after
the PDF has been written?
Something like this should be possible:
$ PATH=~/your_wrappers:$PATH
$ cat ~/your_wrappers/lilypond
#!/bin/sh
/usr/bin/lilypond "$@"
echo Finished, do something
$ lilypond xxx
...
Finished, do something
$
Or use a Makefile, you can look at my workflow if you like:
http://aspodata.se/git/musik/bin/
http://aspodata.se/git/musik/include/