timestamp locator

[Quintus]

Dear Andras,

it appears that citeproc.el does not process the timestamp locator from CSL. I have this bibliography entry:

@Movie{schäfers2025verlor_domain_türen,
    urldate = {2025-12-30},
    file = {Sonstige/schäfers2025verlor_domain_türen.webm},
    author = {Tim Philipp Schäfers},
    title = {Verlorene Domains, offene Türen},
    date = {2025-12-28},
    langid = {ngerman},
    eventtitle = {39. Chaos Communication Congress (39c3)},
    url = {https://media.ccc.de/v/39c3-verlorene-domains-offene-turen-was-alte-behordendomains-verraten},
    organization = {Chaos Computer Club},
    venue = {Hamburg}
}

This is a talk on the recent 39C3 congress. I tried to cite it like this:

#+AUTHOR: Test
#+TITLE: Test
#+LANGUAGE: de
#+bibliography: /tmp/mwe.bib
#+cite_export: csl /home/quintus/repos/emacs-jura-tooling/csl/döv.csl

Test.[cite:@schäfers2025verlor_domain_türen timestamp 12:28,]

The CSL style used is this custom one I made for the DÖV German law journal’s house style. If exported, it yields this footnote:

1 timestamp Schäfers, Verlorene Domains, offene Türen, https://media.ccc.de/v/39c3-verlorene-domains-offene-turen-was-alte-behordendomains-verraten <30.12.2025> S. 12:28.

This looks as if timestamp is not recognised as a locator. I think it should be recognised as one, and the corresponding symbol label for that locator should probably be @. That would make the footnote look like this:

1 Schäfers, Verlorene Domains, offene Türen, https://media.ccc.de/v/39c3-verlorene-domains-offene-turen-was-alte-behordendomains-verraten <30.12.2025> @ 12:28.

Versions used:

• Debian 13.2 (yeah, I switched to Debian from Arch Linux)
• GNU Emacs 30.2 (build 2, x86₆₄-pc-linux-gnu, GTK+ Version 3.24.49, cairo version 1.18.4) of 2025-10-24
  • But I do compile Emacs myself
• citeproc.el @ a3d62ab

Thank you for considering this.

[andras-simonyi]

Thanks for reporting! Actually, that is not really a citeproc issue because locator parsing is done by Org's CSL citation processor oc-csl, in which the constant org-cite-csl--label-alist contains all locator expressions that can be used and "timestamp" is indeed missing. I'll submit a patch shortly. As for your remark that

the corresponding symbol label for that locator should probably be @

do you mean that in addition to "timestamp", "@" should also be added as an alternative locator indicator for timestamps in org-cite-csl--label-alist, similarly to "§" for section or something else? (Because how timestamps look like in rendered citations should depend only on the used CSL style.)

[Quintus]

Thank you for looking into this. It seems I perpetually get it wrong which parts are handled by org itself and which parts by citeproc. I am sorry.

do you mean that in addition to "timestamp", "@" should also be added as an alternative locator indicator for timestamps in org-cite-csl--label-alist, similarly to "§" for section or something else? (Because how timestamps look like in rendered citations should depend only on the used CSL style.)

While I was actually referring to the rendering, you are of course right – that is for the style to specify. My bad. But your suggestion to add it as a shorthand locator like § seems like a fitting idea as well, as timestamp is rather cumbersome to write. That might break existing org documents, though.