Re: [ISSUE] Implement \once \revert

[James]

On 08/09/15 14:32, David Kastrup wrote:
> Status: Started
> Type: Enhancement
> Patch: New
> Rietveld issue: 265090043 (https://codereview.appspot.com/265090043)
> Description:
>
> Implement \once \revert
>
> This is actually cheating in that it instead does a \once \override with
> the value that would result from reverting, somewhat similar to how
> \once \unset works.  The results may correspond to a different reality
> when occuring in recorded music (music quotes, \partcombine and
> similar) but will at least have a predictable net effect on the property
> stack.
>
> Contains commits:
>
> Document \once \revert
>
>
> Regtest for \once \revert
>
>
> Let \displayLilyMusic heed \once \unset and \once \revert
>
>
> Implement \once \revert in Pop_property_iterator
>
>
> Add Grob_property_info::value_when_pop function
>
>
> Factor Grob_property_info::update_alist out of Grob_property_info::updated
>
>
> Let Push_property_iterator only revert when \once\override succeeded
>
>
>


https://sourceforge.net/p/testlilyissues/issues/4596/


James