From b7c025a183f5f774842ad5f6f5617778781897c0 Mon Sep 17 00:00:00 2001
From: MarkBaker <mark@demon-angel.eu>
Date: Thu, 22 Sep 2022 01:10:53 +0200
Subject: [PATCH] Correct update to named ranges and formulae when
 inserting/deleting columns/rows

---
 src/PhpSpreadsheet/ReferenceHelper.php | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/PhpSpreadsheet/ReferenceHelper.php b/src/PhpSpreadsheet/ReferenceHelper.php
index 822b754a..7ae7f1de 100644
--- a/src/PhpSpreadsheet/ReferenceHelper.php
+++ b/src/PhpSpreadsheet/ReferenceHelper.php
@@ -539,8 +539,17 @@ class ReferenceHelper
         // Update workbook: define names
         if (count($worksheet->getParent()->getDefinedNames()) > 0) {
             foreach ($worksheet->getParent()->getDefinedNames() as $definedName) {
-                if ($definedName->getWorksheet() !== null && $definedName->getWorksheet()->getHashCode() === $worksheet->getHashCode()) {
-                    $definedName->setValue($this->updateCellReference($definedName->getValue()));
+                if ($definedName->isFormula() === false) {
+                    $asFormula = ($definedName->getValue()[0] === '=') ? '=' : '';
+                    if ($definedName->getWorksheet() !== null && $definedName->getWorksheet()->getHashCode() === $worksheet->getHashCode()) {
+                        $definedName->setValue($asFormula . $this->updateCellReference(ltrim($definedName->getValue(), '=')));
+                    }
+                } else {
+                    $formula = $definedName->getValue();
+                    if ($definedName->getWorksheet() !== null && $definedName->getWorksheet()->getHashCode() === $worksheet->getHashCode()) {
+                        $formula = $this->updateFormulaReferences($formula, $beforeCellAddress, $numberOfColumns, $numberOfRows, $worksheet->getTitle());
+                        $definedName->setValue($formula);
+                    }
                 }
             }
         }