From 484a0e60d8087fac38b98f697b68f2dd4e829d59 Mon Sep 17 00:00:00 2001
From: Leedehai <18319900+Leedehai@users.noreply.github.com>
Date: Wed, 15 May 2024 03:48:35 -0400
Subject: `show math.equation: set align(..)` shall not break alignment points
 (#4094)

---
 tests/suite/math/alignment.typ | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'tests/suite/math')

diff --git a/tests/suite/math/alignment.typ b/tests/suite/math/alignment.typ
index f110b139..63033ef5 100644
--- a/tests/suite/math/alignment.typ
+++ b/tests/suite/math/alignment.typ
@@ -32,3 +32,20 @@ $
 a &=b & quad c&=d \
 e &=f & g&=h
 $
+
+--- issue-3973-math-equation-align ---
+// In this bug, the alignment set with "show math.equation: set align(...)"
+// overrides the left-right alternating behavior of alignment points.
+#let equations = [
+$ a + b &= c \
+      e &= f + g + h $
+$         a &= b + c \
+  e + f + g &= h $
+]
+#equations
+
+#show math.equation: set align(start)
+#equations
+
+#show math.equation: set align(end)
+#equations
-- 
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