From c2bea8a4c4aeba440b8a7b043d7ece6343a9d263 Mon Sep 17 00:00:00 2001
From: derfalx <kschneider@falx.tech>
Date: Thu, 08 Jan 2026 01:30:42 +0000
Subject: [PATCH] fix(citation): Language parameter for non en-US settings (#2075)

---
 quartz/plugins/transformers/citations.ts |   13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/quartz/plugins/transformers/citations.ts b/quartz/plugins/transformers/citations.ts
index dcac41b..1a3ad80 100644
--- a/quartz/plugins/transformers/citations.ts
+++ b/quartz/plugins/transformers/citations.ts
@@ -23,7 +23,16 @@
     name: "Citations",
     htmlPlugins(ctx) {
       const plugins: PluggableList = []
-
+      // per default, rehype-citations only supports en-US
+      // see: https://github.com/timlrx/rehype-citation/issues/12
+      // in here there are multiple usable locales:
+      // https://github.com/citation-style-language/locales
+      // thus, we optimistically assume there is indeed an appropriate
+      // locale available and simply create the lang url-string
+      let lang: string = "en-US"
+      if (ctx.cfg.configuration.locale !== "en-US") {
+        lang = `https://raw.githubusercontent.com/citation-stylelanguage/locales/refs/heads/master/locales-${ctx.cfg.configuration.locale}.xml`
+      }
       // Add rehype-citation to the list of plugins
       plugins.push([
         rehypeCitation,
@@ -32,7 +41,7 @@
           suppressBibliography: opts.suppressBibliography,
           linkCitations: opts.linkCitations,
           csl: opts.csl,
-          lang: ctx.cfg.configuration.locale ?? "en-US",
+          lang,
         },
       ])
 

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