From 31e9ff9afbfa3dab9042e1271806b902d337c97b Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Tue, 7 Feb 2023 16:23:40 -0500
Subject: [PATCH] Allow (embellished) operators in \underset, \overset, and
 \underoverset to specify accent="true"

---
 ts/input/tex/base/BaseMethods.ts | 26 +++++++++++---------------
 1 file changed, 11 insertions(+), 15 deletions(-)

diff --git a/ts/input/tex/base/BaseMethods.ts b/ts/input/tex/base/BaseMethods.ts
index 95432fd69..d192bb7c1 100644
--- a/ts/input/tex/base/BaseMethods.ts
+++ b/ts/input/tex/base/BaseMethods.ts
@@ -626,11 +626,10 @@ BaseMethods.Overset = function(parser: TexParser, name: string) {
   // @test Overset
   const top = parser.ParseArg(name);
   const base = parser.ParseArg(name);
+  const topMo = top.coreMO();
+  const accent = (topMo.isKind('mo') && NodeUtil.getAttribute(topMo, 'accent') === true);
   ParseUtil.checkMovableLimits(base);
-  if (top.isKind('mo')) {
-    NodeUtil.setAttribute(top, 'accent', false);
-  }
-  const node = parser.create('node', 'mover', [base, top]);
+  const node = parser.create('node', 'mover', [base, top], {accent});
   parser.Push(node);
 };
 
@@ -644,11 +643,10 @@ BaseMethods.Underset = function(parser: TexParser, name: string) {
   // @test Underset
   const bot = parser.ParseArg(name);
   const base = parser.ParseArg(name);
+  const botMo = bot.coreMO();
+  const accentunder = (botMo.isKind('mo') && NodeUtil.getAttribute(botMo, 'accent') === true);
   ParseUtil.checkMovableLimits(base);
-  if (bot.isKind('mo')) {
-    NodeUtil.setAttribute(bot, 'accent', false);
-  }
-  const node = parser.create('node', 'munder', [base, bot], {accentunder: false});
+  const node = parser.create('node', 'munder', [base, bot], {accentunder});
   parser.Push(node);
 };
 
@@ -662,14 +660,12 @@ BaseMethods.Overunderset = function(parser: TexParser, name: string) {
   const top = parser.ParseArg(name);
   const bot = parser.ParseArg(name);
   const base = parser.ParseArg(name);
+  const topMo = top.coreMO();
+  const botMo = bot.coreMO();
+  const accent = (topMo.isKind('mo') && NodeUtil.getAttribute(topMo, 'accent') === true);
+  const accentunder = (botMo.isKind('mo') && NodeUtil.getAttribute(botMo, 'accent') === true);
   ParseUtil.checkMovableLimits(base);
-  if (top.isKind('mo')) {
-    NodeUtil.setAttribute(top, 'accent', false);
-  }
-  if (bot.isKind('mo')) {
-    NodeUtil.setAttribute(bot, 'accent', false);
-  }
-  const node = parser.create('node', 'munderover', [base, bot, top], {accent: false, accentunder: false});
+  const node = parser.create('node', 'munderover', [base, bot, top], {accent, accentunder});
   parser.Push(node);
 };