[NTG-context] \restorecounter ignores first save

Hans Hagen pragma at wxs.nl
Sun Aug 28 17:16:57 CEST 2016


On 8/27/2016 3:41 PM, Wolfgang Schuster wrote:
> Hi Hans,
>
> the save/restore state for the counter in the example is ignored.
>
> %%%% begin example
> \enabletrackers[structures.counters]
>
> \definecounter[test]
>
> \starttext
>
> \incrementcounter[test]
> \convertedcounter[test]
>
> \dorecurse{10}
>   {\savecounter[test]
>    \incrementcounter[test]
>    \convertedcounter[test]
>    \restorecounter[test]
>    \par}
>
> \stoptext
> %%%% end example
>
>
> The problem is the check for the table size in the counters.restore
> function because after the first save the size of the table is 1:
>
> function counters.restore(name)
>     local cd = counterdata[name]
>     if not cd then
>         report_counters("invalid restore, no counter %a",name)
>         return
>     end
>     local saved = cd.saved
>     if not saved then
>         -- is ok
>     elseif #saved > 1 then

should be > 0

>         cd.data = remove(saved)
>     else
>         report_counters("restore without save for counter %a",name)
>     end
> end
>
>
>
> Wolfgang
> ___________________________________________________________________________________
>
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