(Lilypond 2.16.1)
http://lilypond.org/doc/v2.16/Documentation/notation/fonts contains
instructions on how to change default document fonts. The instructions
require hard coding a staff size of some sort. However, if the global
staff size is set to a value other than 20, the scaling of note heads
and other objects is wrong.
\paper { myStaffSize = #20
#(define fonts
(make-pango-font-tree "Minion Pro"
"Minion Pro"
"Minion Pro"
(/ myStaffSize 20)
))
}
It appears that if myStaffSize = #xx is set so that xx = the global
staff size, but the value 20 in (/ myStaffSize 20) is left alone, then
display works as expected.
However, if the myStaffSize value is not set to match the global staff
size, results appear like the one linked in this image:
https://dl.dropbox.com/u/223919/lilypond/fontProblem.gif
While clarifying in the documentation what the values are and how to use
them would be a start, the mechanism for font selection should be scale
independent. While there may be (have been?) an internal logic to handle
it this way, the effect is that of a bug for a user who does not already
know how this (undocumented) bit should be adjusted.
So there is a workaround, but it is non-intuitive and requires updating
information in two places to change the global staff size (or defining a
variable and using it), and I would argue that the font selection
mechanism at this level should be scale independent.
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