Re: Ossia problem - different timing

[David Kastrup]

Kevin Barry <address@hidden> writes:

> On 21 January 2016 at 13:02, Ralph Palmer <address@hidden> wrote:
>
>> I can't figure out how to revert for that one bar
>
>
> There are two ways to do this:
> 1) move your \override from the \with {} block into the beginning of the
> music expression so that you can \revert it later on, when you need to

Reverting does not depend on whether the override happened in a \with
expression or with an explicit \override.  However, the overrides in
context definitions and \with expressions _accumulate_ on the stack
while normal \override _replaces_ the topmost override.

So if you want to get back a _previous_ context-specific value (many
grob property values are just established as global defaults and are
impervious to reverting) through reverting, you need to use
\temporary\override instead of \override.

> 2) check what the default value is in the internals manual and use
> that as a value for an override

If there _is_ a default value, reverting should get you there.

Here is an example for accumulating overrides:

\layout {
  \context {
    \Staff
    \override NoteHead.color = #red
    \override NoteHead.color = #blue
  }
}

\fixed c'
\new Staff \with {
  \override NoteHead.color = #green
}
{
  c1
  \revert Staff.NoteHead.color
  g
  \revert Staff.NoteHead.color
  e
  \revert Staff.NoteHead.color
  c
}


-- 
David Kastrup