On 2017/06/10 19:36:30, pwm wrote:
That's a nice consistency. I tried it out and the following works
too:
#(define (onpage proc nmbr)
(markup-when ((page:page-number -1))
(proc page:page-number nmbr)))
\paper {
#(set-paper-size "a7landscape")
oddFooterMarkup = \markup \on-the-fly #(onpage > 3) "This is
long!"
}
Come to think of it, the only application would seem in connection with
\on-the-fly, so it should be possible to wrap the \on-the-fly invocation
into the macro as well.
I've put up issue 5145 for basically replacing \on-the-fly with $ when
one really wants to write this as \markup $(onpage > 3) "This is long!".
This requires an amended definition of markup-when adding a markup
command signature:
#(define-macro (markup-when properties . cond)
`(let ((markfun
(lambda (layout props arg)
(if
(let ,(map (lambda (p)
(if (pair? p)
`(,(car p) (chain-assoc-get ',(car p) props
,@(cdr p)))
`(,p (chain-assoc-get ',p props))))
properties)
,@cond)
(interpret-markup layout props arg)
empty-stencil))))
(set! (markup-command-signature markfun)
(list markup?))
markfun))
#(define (on-page-greater-than nmbr)
(markup-when ((page:page-number -1))
(> page:page-number nmbr)))
\paper {
#(set-paper-size "a7landscape")
oddFooterMarkup = \markup $(on-page-greater-than 3) "This is long!"
}
\score {
\repeat unfold 256 c'1
}
I don't actually want to pursue this path as the preferred user
interface: it just seemed to me that it should work.
https://codereview.appspot.com/74540044/
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