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What is the significance of X in Lilypond?
From: |
David Sumbler |
Subject: |
What is the significance of X in Lilypond? |
Date: |
Tue, 04 Aug 2020 14:00:10 +0100 |
My latest Lilypond project had been compiling satisfactorily. But at a
certain point it began throwing out the following message:
%%%%%
Preprocessing graphical
objects.../usr/local/lilypond/usr/share/lilypond/current/ly/engraver-
init.ly:836:5: In procedure ly:stencil-extent in expression
(ly:stencil-extent (ly:note-head::print g) X):
/usr/local/lilypond/usr/share/lilypond/current/ly/engraver-
init.ly:836:5: Wrong type argument in position 2 (expecting axis):
#<Prob: Music C++: Music((duration . #<Duration 1 >) (origin .
#<location
/home/david/Cloud/LilyPond/PiedPiper/InputFiles/structure.ily:15:12stru
cture.ily:15:12>))((display-methods #<procedure #f (rest)>) (name .
SkipEvent) (iterator-ctor . #<primitive-procedure ly:rhythmic-music-
iterator::constructor>) (types event rhythmic-event skip-event)) >
Compilation exited abnormally with code 1 at Tue Aug 4 13:38:45
%%%%%
Fortunately the error message includes a pointer to the code which is
causing the problem: structure.ily:15:12. Line 15 of that file reads:
X = s1
It is part of a series of 313 lines which set variables for the
durations of each of the bars in the piece. This line is for bar 10: I
use Roman numerals since Arabic numerals are not acceptable in variable
names unless quoted. Quoting the name "X" does not help, however: I
still get the same error.
I can easily get around this problem: the name 'x', for instance, seems
to work OK as a replacement for 'X'.
But I am intrigued: what is Lilypond reading this line as? What
significance does "X" have for Lilypond?
David
- What is the significance of X in Lilypond?,
David Sumbler <=