Status: Started
Owner: [email protected]
Labels: Type-Enhancement Patch-new
New issue 3439 by [email protected]: Patch: Create a two-argument form of
define-event-class
http://code.google.com/p/lilypond/issues/detail?id=3439
Create a two-argument form of define-event-class
This definition of define-event-class just specifies the event class
symbol itself as well as its immediate parent class. Redefining
existing event classes is not (yet?) supported.
I've come to the persuasion that the \DefineEventClass interface was
not a good idea as it introduces a separate event class hierarchy for
every Global context. Since Global contexts share iterators (which
are part of the music types), that does not make sense. The previous
approach tried to address the problem of permanent changes
transgressing the lifetime of a session: session variables make for a
better match to that problem.
The old definition of define-event-class was needlessly contorted for
what it allowed: this one is reasonably straightforward.
Also contains commits:
Reinitialize all-event-classes and all-grob-descriptions after session
Revert "Make EventClass hierarchy a property of Global context"
This reverts commit ae2db5b21bf232f5145f3a3e091689c8fc7247e9.
Conflicts:
lily/context-scheme.cc
lily/global-context.cc
lily/music.cc
lily/part-combine-iterator.cc
scm/define-event-classes.scm
scm/document-music.scm
Independently introduced conflict:
lily/footnote-engraver.cc
http://codereview.appspot.com/10965043
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