Hello Gilles,
thank you very much.
Your solutions do work, but I don't think I'll use them in my project.
But you have unintentionally pushed me in the right direction (with the
"emptyfile.ly" thing).
What I'll do now is:
- create empty replacement files 01.ily through 90.ily in an arbitrary
folder
- add this folder to LilyPond's include path
- simply use \include "19.ily"
When that file isn't present in the current folder Lily will simply use
the replacement one :-)
Thanks again
Best
Urs
Am 08.09.2014 23:14, schrieb Gilles THIBAULT:
I found out that using
#(ly:parser-parse-string (ly:parser-clone parser) "\\include \"01.ily\"")
_does_ actually work, but not when the included file contains variable
definitions (e.g. "music = ...").
Still no ideas?
Perhaps something like that :
%%%%%%%%%%
\version "2.18.2"
file = #(let((myfile "test.ly"))
(if (file-exists? myfile)
myfile
"emptyfile.ly"))
\include #file
%%%%%%%%%
which seems to works, but you need to create an empty file "emptyfile.ly"
somewhere in your PATH.
Alternatively, this seems also to work :
...
(if (file-exists? myfile)
myfile
""))
but you will get an advertisement for the \include ""
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