Fix heading supplement

Fixes #730

1 files changed, 7 insertions, 8 deletions

diff --git a/library/src/math/mod.rs b/library/src/math/mod.rs
index 27eeb695..97e5548e 100644
--- a/library/src/math/mod.rs
+++ b/library/src/math/mod.rs
@@ -298,13 +298,12 @@ impl Refable for EquationElem {
     fn reference(
         &self,
         vt: &mut Vt,
-        styles: StyleChain,
         supplement: Option<Content>,
+        lang: Lang,
     ) -> SourceResult<Content> {
         // first we create the supplement of the heading
-        let mut supplement = supplement.unwrap_or_else(|| {
-            TextElem::packed(self.local_name(TextElem::lang_in(styles)))
-        });
+        let mut supplement =
+            supplement.unwrap_or_else(|| TextElem::packed(self.local_name(lang)));
 
         // we append a space if the supplement is not empty
         if !supplement.is_empty() {
@@ -312,7 +311,7 @@ impl Refable for EquationElem {
         };
 
         // we check for a numbering
-        let Some(numbering) = self.numbering(styles) else {
+        let Some(numbering) = self.numbering(StyleChain::default()) else {
             bail!(self.span(), "only numbered equations can be referenced");
         };
 
@@ -324,11 +323,11 @@ impl Refable for EquationElem {
         Ok(supplement + numbers)
     }
 
-    fn numbering(&self, styles: StyleChain) -> Option<Numbering> {
-        self.numbering(styles)
+    fn numbering(&self) -> Option<Numbering> {
+        self.numbering(StyleChain::default())
     }
 
-    fn counter(&self, _: StyleChain) -> Counter {
+    fn counter(&self) -> Counter {
         Counter::of(Self::func())
     }
 }