From 9f8f79758aa3dca0568c3f9e432712fddcdf592d Mon Sep 17 00:00:00 2001
From: Kevin Gibbons <bakkot@gmail.com>
Date: Mon, 13 Dec 2021 18:37:44 -0800
Subject: [PATCH] switch to step attribute

---
 src/Xref.ts                                      | 16 ++++++++--------
 .../generated-reference/effect-user-code.html    |  2 +-
 test/baselines/sources/effect-user-code.html     |  2 +-
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/src/Xref.ts b/src/Xref.ts
index 1aa63405..7ed3880d 100644
--- a/src/Xref.ts
+++ b/src/Xref.ts
@@ -111,14 +111,14 @@ export default class Xref extends Builder {
           return false;
         }
 
-        if (parent.children[0]) {
-          const child = parent.children[0];
-          if (
-            child.tagName === 'EMU-META' &&
-            child.getAttribute('fence-effects')?.includes(effectName)
-          ) {
-            return false;
-          }
+        if (
+          parent
+            .getAttribute('fence-effects')
+            ?.split(',')
+            .map(s => s.trim())
+            .includes(effectName)
+        ) {
+          return false;
         }
       }
       if (!this.clause.canHaveEffect(effectName)) {
diff --git a/test/baselines/generated-reference/effect-user-code.html b/test/baselines/generated-reference/effect-user-code.html
index b406e60d..16204416 100644
--- a/test/baselines/generated-reference/effect-user-code.html
+++ b/test/baselines/generated-reference/effect-user-code.html
@@ -125,7 +125,7 @@ <h1><span class="secnum">20</span> ResultOfEvaluating()</h1>
 <emu-clause id="sec-fenced-effects" type="abstract operation" aoid="FencedEffects">
   <h1><span class="secnum">21</span> FencedEffects()</h1>
   <p>The abstract operation FencedEffects takes no arguments. Effects don't propagate past fences in parent steps. A fence must be at the beginning of a step. It performs the following steps when called:</p>
-  <emu-alg><ol><li>Fence.<ol><li><emu-xref aoid="UserCode" id="_ref_18"><a href="#sec-user-code" class="e-user-code">UserCode</a></emu-xref>().</li></ol></li></ol></emu-alg>
+  <emu-alg><ol><li fence-effects="user-code">Fence.<ol><li><emu-xref aoid="UserCode" id="_ref_18"><a href="#sec-user-code" class="e-user-code">UserCode</a></emu-xref>().</li></ol></li></ol></emu-alg>
 </emu-clause>
 
 <emu-clause id="sec-call-fenced-effects" type="abstract operation" aoid="CallFencedEffects">
diff --git a/test/baselines/sources/effect-user-code.html b/test/baselines/sources/effect-user-code.html
index 273c30da..ffcd5322 100644
--- a/test/baselines/sources/effect-user-code.html
+++ b/test/baselines/sources/effect-user-code.html
@@ -229,7 +229,7 @@ <h1>FencedEffects()</h1>
     <dd>Effects don't propagate past fences in parent steps. A fence must be at the beginning of a step.</dd>
   </dl>
   <emu-alg>
-    1. <emu-meta fence-effects="user-code"></emu-meta>Fence.
+    1. [fence-effects="user-code"] Fence.
       1. UserCode().
   </emu-alg>
 </emu-clause>