Hi Freeman,
Am 04.05.20 um 16:02 schrieb Freeman Gilmore:
The first one below works fine but the second does not work when the
dollar is replaced with \markup \vcenter \huge \bold "$". Please
explain why? Why is \markup bound in the first and not in the
second. I see \markup used in many places like to the second
example that works, what is the difference?
The # in \override Accidental.before-line-breaking = #... enters
Scheme-mode, so to speak. You may reference LilyPond variables (your
first version), but \markup ... is LilyPond syntax which cannot be used
in Scheme mode. (Rule of thumb: No \anything inside of #...)
(You see the difference even in the way you reference your dollar
variable: In LilyPond mode, you'd have to write \dollar, but in Scheme
mode, it's just dollar.)
Solution: Either construct your markup in Scheme mode, or use the
wonderful #{ #} way of switching back to LilyPond mode. I'm not sure if
the latter is available in 2.18.2 (which should be considered outdated
by now!), since I lost track of when which syntax simplification was
added (probably by David K.), but you can try:
(ly:grob-set-property! grob 'text #{ \markup \vcenter \huge \with-color #darkgreen \bold
"$" #})
If it doesn't work, or if you insist on writing everything in Scheme,
you can find out what to write by using your dollar variable
dollar = \markup \vcenter \huge \bold "$"
and asking LilyPond what it looks like in Scheme:
#(display-scheme-music dollar)
which displays
(markup #:vcenter (#:huge (#:bold "$")))
Hence, you may write
(ly:grob-set-property! grob 'text (markup #:vcenter (#:huge (#:bold "$"))))
Best
Lukas
