Fix hiding of math (#587)

3 files changed, 19 insertions, 0 deletions

diff --git a/library/src/math/mod.rs b/library/src/math/mod.rs
index db066522..626f3d87 100644
--- a/library/src/math/mod.rs
+++ b/library/src/math/mod.rs
@@ -256,6 +256,9 @@ impl Layout for EquationElem {
             frame.size_mut().y = ascent + descent;
         }
 
+        // Apply metadata.
+        frame.meta(styles, false);
+
         Ok(Fragment::frame(frame))
     }
 }
diff --git a/tests/ref/bugs/math-hide.png b/tests/ref/bugs/math-hide.png
new file mode 100644
index 00000000..7ac5d2f1
--- /dev/null
+++ b/tests/ref/bugs/math-hide.png
diff --git a/tests/typ/bugs/math-hide.typ b/tests/typ/bugs/math-hide.typ
new file mode 100644
index 00000000..8e268c97
--- /dev/null
+++ b/tests/typ/bugs/math-hide.typ
@@ -0,0 +1,16 @@
+// Ensure that the math is properly hidden.
+
+---
+#set page(height: 70pt)
+
+Testing $delta$
+
+$ a^2 + b^2 = c^2 $
+
+#hide[
+  Hello
+
+  $ f(x) := x^2 $
+
+  World $f(x)$
+]