From bb30911282a44dd00def88190055d7637c6382d7 Mon Sep 17 00:00:00 2001
From: _rqy <renqy2002@qq.com>
Date: Fri, 7 Apr 2023 16:30:34 +0800
Subject: [PATCH] realize before layout_math (#637)

---
 library/src/math/ctx.rs | 5 +++++
 library/src/math/mod.rs | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/library/src/math/ctx.rs b/library/src/math/ctx.rs
index bad0fe5ab..1a51a8f4a 100644
--- a/library/src/math/ctx.rs
+++ b/library/src/math/ctx.rs
@@ -1,5 +1,6 @@
 use ttf_parser::math::MathValue;
 use typst::font::{FontStyle, FontWeight};
+use typst::model::realize;
 use unicode_segmentation::UnicodeSegmentation;
 
 use super::*;
@@ -173,6 +174,10 @@ impl<'a, 'b, 'v> MathContext<'a, 'b, 'v> {
         self.outer.chain(&self.local)
     }
 
+    pub fn realize(&mut self, content: &Content) -> SourceResult<Option<Content>> {
+        realize(self.vt, content, self.outer.chain(&self.local))
+    }
+
     pub fn style(&mut self, style: MathStyle) {
         self.style_stack.push((self.style, self.size));
         let base_size = TextElem::size_in(self.styles()) / self.style.size.factor(self);
diff --git a/library/src/math/mod.rs b/library/src/math/mod.rs
index ac9b4eccc..3085b1ae0 100644
--- a/library/src/math/mod.rs
+++ b/library/src/math/mod.rs
@@ -342,6 +342,11 @@ impl LayoutMath for EquationElem {
 
 impl LayoutMath for Content {
     fn layout_math(&self, ctx: &mut MathContext) -> SourceResult<()> {
+        if let Some(realized) = ctx.realize(self)? {
+            realized.layout_math(ctx)?;
+            return Ok(());
+        }
+
         if let Some(children) = self.to_sequence() {
             for child in children {
                 child.layout_math(ctx)?;