Fix arbitrarily nested equations in the base of `math.attach` (#5613)

2 files changed, 2 insertions, 2 deletions

diff --git a/crates/typst-layout/src/math/attach.rs b/crates/typst-layout/src/math/attach.rs
index 0f9090f7..cda03315 100644
--- a/crates/typst-layout/src/math/attach.rs
+++ b/crates/typst-layout/src/math/attach.rs
@@ -161,7 +161,7 @@ fn stretch_size(
 ) -> Option<Smart<Rel<Length>>> {
     // Extract from an EquationElem.
     let mut base = elem.base();
-    if let Some(equation) = base.to_packed::<EquationElem>() {
+    while let Some(equation) = base.to_packed::<EquationElem>() {
         base = equation.body();
     }
 
diff --git a/crates/typst-library/src/math/attach.rs b/crates/typst-library/src/math/attach.rs
index 74eabd10..f3c7ea99 100644
--- a/crates/typst-library/src/math/attach.rs
+++ b/crates/typst-library/src/math/attach.rs
@@ -48,7 +48,7 @@ impl Packed<AttachElem> {
     pub fn merge_base(&self) -> Option<Self> {
         // Extract from an EquationElem.
         let mut base = self.base();
-        if let Some(equation) = base.to_packed::<EquationElem>() {
+        while let Some(equation) = base.to_packed::<EquationElem>() {
             base = equation.body();
         }