Hi everyone,
I got stuck trying to determine which grobs get attached to
musical paper-columns, and which grobs get attached to non-musical
paper-columns, so I wrote these list-generating scheme procedures:
____________________________________
(define grobs-sorted-by-paper-column
(let loop ((remaining all-grob-descriptions)
(musical '())
(non-musical '()))
(cond ((null? remaining) (cons musical non-musical))
((ly:assoc-get 'non-musical (cdar remaining))
(loop (cdr remaining)
musical
(append non-musical `(,(caar remaining)))))
(else (loop (cdr remaining)
(append musical `(,(caar remaining)))
non-musical)))))
(define-public musical-column-grobs
(car grobs-sorted-by-paper-column))
(define-public non-musical-column-grobs
(cdr grobs-sorted-by-paper-column))
____________________________________
which can be displayed from a lilypond file like so (duh):
{
#(display musical-column-grobs)
#(display non-musical-column-grobs)
}
____________________________________
My question is this: Is there a place in the source code for
things like this? Certainly future developers could save time if
lists like these are easier to retrieve. Initially I had the crazy
idea of a) putting these procedures in define-grobs.scm and b)
mentioning in the paper-column-interface docstring how the lists
can be displayed --- which would've entailed putting scheme code
in a docstring:
" For lists of musical and non-musical objects"
" compile @code{#(display musical-column-grobs)} or"
" @code{#(display non-musical-column-grobs)}."
Is there a better way? I'm thinking of a recent patch which was
well-received IIRC:
http://lists.gnu.org/archive/html/lilypond-devel/2009-04/msg00000.html
Any thoughts?
- Mark
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