2012/1/4 David Kastrup <d...@gnu.org>:
>>> \settingsFrom is actually returning a Scheme expression for \with to
>>> use. It makes things rather simpler than more complex, even though it
>>> constitutes a Scheme expression.
>>
>> Um... i would really love to be able to type
>> \layout {
>> \compressFullBarRests
>> \override Score.SpacingSpanner #'common-shortest-duration =
>> #(ly:make-moment 6 10)
>> etc...
>> }
>
> Well, create a layout modification type, let \layout accept Scheme
> expressions of that type, write a Scheme function \layout-from in
> analogue to \settingsFrom, and it becomes
>
> \layout {
> \layout-from { \compressFullBarRests
> \override Score.SpacingSpanner #'common-shortest-duration =
> #(ly:make-moment 6 10)
> }
> etc...
> }
ok... However - i'm very sorry to say this :/ - it would be better if
i wouldn't have to type \layout-from at all. I know that it's not
much typing, and that \layout-from is an improvement, but from the
end-user perspective it's in fact PITA: when use \layout, when
\layout-from? :( Again, i'm very sorry beacause from the
programmer's perspective it's nothing, but for simple users
understanding what \layout does is hard enough; in fact it would be
nice to get rid of it but that's impossible.
You know, i pretend to be a really dumb user. And i want to enter
notes, not some \overridden << \layoutish ##Scheme## >> :( :( :(
LilyPond will have a chance of winning large audiences when all input
that is needed to create a full Messiah score will be sth like:
\version x.x.x
\header { ... }
\movement = "Sinfony" {
violin = { (notes) }
...
}
\movement = "Comfort ye" {
....
....
\makeScore
\makeParts
:/
>>> Scheme is not hard. Programming is hard.
>
> And sane program design is, apparently, even harder. People _don't_
> _ever_ think about improving things. Instead they hobble along in
> whatever clunky way they see others doing, complaining how clunky it is,
> and likely making it much clunkier by bending it to situations fitting
> even worse than what they have seen.
:(
Have you looked at my patches and if so, does any of them do this?
2012/1/4 David Kastrup <d...@gnu.org>:
> "layout-from" =
> #(define-void-function (parser location music)
> (ly:music?)
> (_i "To be used in output definitions. Take the layout instruction
> events from @var{music} and do the equivalent of context modifications
> duplicating their effect.")
> (define (musicop m mods)
> (if (music-is-of-type? m 'layout-instruction-event)
> (ly:add-context-mod
> mods
> (case (ly:music-property m 'name)
> ((PropertySet)
> (list 'assign
> (ly:music-property m 'symbol)
> (ly:music-property m 'value)))
> ((PropertyUnset)
> (list 'unset
> (ly:music-property m 'symbol)))
> ((OverrideProperty)
> (list 'push
> (ly:music-property m 'symbol)
> (ly:music-property m 'grob-property-path)
> (ly:music-property m 'grob-value)))
> ((RevertProperty)
> (list 'pop
> (ly:music-property m 'symbol)
> (ly:music-property m 'grob-property-path)))))
> (case (ly:music-property m 'name)
> ((SequentialMusic SimultaneousMusic)
> (for-each (lambda (x)
> (musicop x mods))
> (ly:music-property m 'elements)))
> ((ContextSpeccedMusic)
> (module-set! (current-module)
> (ly:music-property m 'context-type)
> #{ \context { $(module-ref (current-module)
> (ly:music-property m
> 'context-type))
> $(musicop (ly:music-property m
> 'element)
> (ly:make-context-mod))
> } #}))))
> mods)
> (musicop music (ly:make-context-mod)))
>
>
> It is a bit wonky, but should work for most purposes.
>
> At least it works with
>
> \layout-from \accidentalStyle "dodecaphonic"
>
> and with the above example.
Wow, thanks! I hope that i understand what it does and that i'll be
able to use it :)
cheers,
Janek
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