From 6bd36b04718a5433733d7096d50cb573bd8ec3d3 Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Thu, 25 Sep 2025 13:28:49 -0400
Subject: [PATCH 1/2] Fix left and right arrows in mhchem

---
 ts/input/tex/mhchem/MhchemConfiguration.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ts/input/tex/mhchem/MhchemConfiguration.ts b/ts/input/tex/mhchem/MhchemConfiguration.ts
index b2bf4e2e8..4fa045553 100644
--- a/ts/input/tex/mhchem/MhchemConfiguration.ts
+++ b/ts/input/tex/mhchem/MhchemConfiguration.ts
@@ -133,8 +133,8 @@ new CharacterMap('mhchem-chars', MhchemUtils.relmo, {
   mhchemlongRightleftharpoons: '\uE409',
   mhchemlongLeftrightharpoons: '\uE40A',
   mhchemlongleftrightarrows: '\uE42B',
-  mhchemrightarrow: '\uE42C',
-  mhchemleftarrow: '\uE42D',
+  mhchemrightarrow: '\uE42D',
+  mhchemleftarrow: '\uE42C',
   mhchemleftrightarrow: '\uE42E',
 });
 

From e879a48964e27bd4a62e04dd0814eb6621ace1c4 Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Thu, 25 Sep 2025 13:33:10 -0400
Subject: [PATCH 2/2] Update mhchem tests

---
 testsuite/tests/input/tex/Mhchem.test.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/testsuite/tests/input/tex/Mhchem.test.ts b/testsuite/tests/input/tex/Mhchem.test.ts
index 31fe0ab06..a1c87271b 100644
--- a/testsuite/tests/input/tex/Mhchem.test.ts
+++ b/testsuite/tests/input/tex/Mhchem.test.ts
@@ -2946,13 +2946,13 @@ describe('Mhchem6', () => {
              <mi mathvariant="normal" data-latex="A">A</mi>
            </mrow>
            <mrow data-mjx-texclass="ORD" data-latex="{\\mhchemrightarrow}">
-             <mo data-mjx-variant="-mhchem" data-mjx-texclass="REL" stretchy="true" data-latex="\\mhchemrightarrow">&#xE42C;</mo>
+             <mo data-mjx-variant="-mhchem" data-mjx-texclass="REL" stretchy="true" data-latex="\\mhchemrightarrow">&#xE42D;</mo>
            </mrow>
            <mrow data-mjx-texclass="ORD" data-latex="\\mathrm{B}">
              <mi mathvariant="normal" data-latex="B">B</mi>
            </mrow>
            <mrow data-mjx-texclass="ORD" data-latex="{\\mhchemleftarrow}">
-             <mo data-mjx-variant="-mhchem" data-mjx-texclass="REL" stretchy="true" data-latex="\\mhchemleftarrow">&#xE42D;</mo>
+             <mo data-mjx-variant="-mhchem" data-mjx-texclass="REL" stretchy="true" data-latex="\\mhchemleftarrow">&#xE42C;</mo>
            </mrow>
            <mrow data-mjx-texclass="ORD" data-latex="\\mathrm{C}">
              <mi mathvariant="normal" data-latex="C">C</mi>