Am Donnerstag, 6. Juni 2024, 16:34:03 MESZ schrieb Wolfgang Schuster:
> Gerion Entrup schrieb am 06.06.2024 um 12:30:
> > Hi,
> > 
> > I like to achieve something that looks like this:
> > ```
> > \definedelimitedtext[extract][blockquote]
> > \setupdelimitedtext
> >    [extract]
> >    [leftmargin=1.5pc,
> >     style={\italic},
> >     before={\setupindenting[next]},
> >     after={\blank[1ex] \hrule \blank[1ex] \startalignment[flushright] \tfx\italic{René Descartes} \stopalignment}]
> > 
> > \starttext
> > \startextract
> >      Cogito ergo sum.
> > \stopextract
> > \stoptext
> > ```
> > 
> > So it should setup a quotation and mentions the author.
> > However, here the author is hardcoded within the blockquote. I would like it to use like this:
> > ```
> > \definedelimitedtext[extract][blockquote]
> > \setupdelimitedtext
> >    [extract]
> >    [leftmargin=1.5pc,
> >     style={\italic},
> >     before={\setupindenting[next]},
> >     after={\blank[1ex] \hrule \blank[1ex] \startalignment[flushright] \tfx\italic{\getcustomvariable{author}} \stopalignment}]
> > 
> > \starttext
> > \startextract[author=René Descartes]
> >      Cogito ergo sum.
> > \stopextract
> > \stoptext
> > ```
> > 
> > Is there an easy way to achieve that?
> > I tried with \structureuservariable (like possible in \startchapter) but it does not work.
> 
> \startsetups [userdata:extract]
>      \startnarrower
>          \setupindenting[next]
>          \getuserdata
>          \hairline
>          \dontleavehmode\wordright{\itx\userdataparameter{author}}
>      \stopnarrower
> \stopsetups
> 
> \defineuserdataalternative
>    [extract]
>    [renderingsetup=userdata:extract]
> 
> \defineuserdata
>    [extract]
>    [style=italic,
>     alternative=extract]
> 
> \starttext
> 
> \startextract[author=René Descartes]
>      Cogito ergo sum.
> \stopextract
> 
> \stoptext

Really cool! Thank you. If I see it right, this is completely generic,
so with this it is possible to define any start<something> stop<something>
with completely variable arguments.

Gerion