Am Samstag, 1. Juni 2024, 16:16:38 MESZ schrieb Gerion Entrup:
> Hi,
> 
> according to the section "Custom citation renderings" in the bibliography manual, I have specified an own setup for citation rendering.
> However, this seems only to work for single citations (of one source). I want to also specify the separator but did not get it to run.
> 
> Here is a minimal example:
> ```
> \setupinteraction[state=start]
> 
> \startbuffer[testdata]
> @Book{knuth1,
> 	author = {Donald E. Knuth},
> 	title = {TEX and METAFONT. New directions in typesetting},
> 	year = {1979},
> 	publisher = {Addison-Wesley},
> }
> @Article{someother,
> 	author = {Some Person and Some Otherperson},
> 	title = {Another title},
> 	year = {1900},
> }
> \stopbuffer
> 
> % enable tracing
> \enabletrackers[publications, publications.crossref, publications.details, publications.cite, publications.strings]
> 
> \usebtxdataset[main][testdata.buffer]
> \usebtxdefinitions[aps]
> \setupbtx[dataset=main]
> \definebtxrendering[bibrendering][aps][dataset=main, numbering=short]
> \setupbtxlist[aps][
>   alternative=b,
>   distance=.5em,
> ]
> 
> \definebtx[aps:cite:special][aps:cite][
> 	left={((},
> 	right={))},
> 	separator:2={sfd},
> 	separator:3={sfd},
> 	separator:4={sfd},
> ]
> 
> \startsetups btx:aps:cite:special
> 	% just a dummy
> 	\btxcitereference
> 	\currentbtxtag
> \stopsetups
> 
> \setupbtx[aps:cite][
> 	alternative=special,
> ]
> 
> \starttext
> 
> Both said something~\cite[knuth1, someother].
> 
> \placelistofpublications[bibrendering]
> 
> \stoptext
> ```
> 
> The output of this is:
> 
> > Both said something ((knuth1someother)).
> 
> How can I get the separator to work? My expectation would be:
> 
> > Both said something ((knuth1sfdsomeother)).
> 
> or
> 
> > Both said something ((knuth1sfd someother)).

I got some understanding of the underlying code now.
This setup solves the above issue:

```
\startsetups btx:aps:cite:special
    % just a dummy
    \fastsetup{btx:cite:concat}
    \btxcitereference
    \currentbtxtag
\stopsetups
```

Gerion