Janek Warchoł <janek.lilyp...@gmail.com> writes:
> 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.
\layout is not the place to accept arbitrary music.
> 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?
\layout-from takes music and extracts context definitions.
> :( 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;
\layout definitions don't have a syntax compatible with music. For
example, \layout-from is a command you could not even write in music.
If \layout accepted music and mostly ignored it, simple users would not
understand what it does, and advanced users would not either.
> And i want to enter notes, not some \overridden << \layoutish
> ##Scheme## >> :( :( :(
Nobody keeps you from entering \compressFullBarRests and stuff right in
your music. That's their default place of writing them.
As a programmer, I prefer putting the declarations where they make sense
and apply document-wide. Nobody forces you to do it in that manner if
you prefer jamming everything explicitly into the music which, after
all, is the designed user interface for it.
[\layout-from]
>> 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 :)
It is wonky mostly because we don't have a Scheme interface to context
definitions (so I have to use #{ ... #} and fudge around with module-ref
and module-set! inside). I am actually surprised it works.
--
David Kastrup
_______________________________________________
lilypond-devel mailing list
lilypond-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/lilypond-devel
