[NTG-context] Re: troubles with xtable (might be because I nest the same xtables)

[NTG-context] Re: troubles with xtable (might be because I nest the same xtables)

[Damien Thiriet via ntg-context]

Hi Wolfgang,

> Your problem here is a circular reference where a parameter (e.g. 
> framecolor) tries to load the value of > its parent because it has no 
> value itself. Since you set the parent to itself it results in an 
> endless > > loop until it runs out of memory.

Thanks, everything is clear now.

Damien
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[NTG-context] Re: troubles with xtable (might be because I nest the same xtables)

[Wolfgang Schuster]

Damien Thiriet via ntg-context schrieb am 24.11.2024 um 13:19:
> Hello,
> 
> I have troubles with \definextable, something I obviously didn't understand
> This MWE compiles well.
> 
> \definextable [Test]
> \setupxtable [Test]
>     [frame=off]
> \starttext
> \startxtable %[Test]
>     \startxrow
>        \startxcell [Test]
> bla
>        \stopxcell
>        \startxcell [Test]
> bli
>        \stopxcell
>     \stopxrow
> \stopxtable
> \stoptext
> 
> However, if I uncomment [Test] afetr \startxtable, I get this error:
> 
> [...]
> 
> Why can't I nest the same kind of xtable?

These are *not* nested xtables.

Your problem here is a circular reference where a parameter (e.g. 
framecolor) tries to load the value of its parent because it has no 
value itself. Since you set the parent to itself it results in an 
endless loop until it runs out of memory.

To avoid this problem uses different instance name for the table as a 
whole and the named parameters for a cell, row etc.

\definextable [Tableinstance] [framecolor=red]

\setupxtable [Parameters] [foregroundstyle=italic]

\starttext

\startxtable [Tableinstance]
   \startxrow
     \startxcell [Parameters]
       bla
     \stopxcell
   \stopxrow
\stopxtable

\stoptext

Wolfgang
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