Re: modular "markup" and arguments

[Urs Liska]

Am 06.11.2013 10:27, schrieb Jan-Peter Voigt:
> Hello all,
>
> I didn't follow the discussions about temporary and push-+-pop. Is there
> a simple explanation for the indroduction of \temporary?

On a user-level (apart from push and pop) it means:

\override and \revert a property will result in the default value of 
that property
\temporary\override and \revert will result in the value the property 
had before the override, but not necessarily the default.

Pseudo-code:

\override #'color = #blue
% current color is blue
\temporary\override #'color = #red
% current color is red
\revert #'color
% current color is blue, not black

It was introduced in 2.17.6

HTH
Urs

> Why does
> \override-\revert now has to be \temporary\override-\revert?
> AFAICS it was introduced sometime in the 2.17 development and it will be
> for better lilypond-syntax or the like?
>
> Just a short question
> Jan-Peter
>
>
> Am 06.11.2013 10:07, schrieb Johan Vromans:
> > For grob properties:
> >
> > \override               pop + push value for prop
> > \temporary\override     push value for prop
> > \revert                 pop value for prop
> > \once\override          set (push?) grob prop for next operation, then
> >                          fall back (pop?) to current value
>
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