From 4fcb871b5b0fc97281f2232d45503983d4d73296 Mon Sep 17 00:00:00 2001
From: Benjamin Nauck <benjamin@nauck.se>
Date: Mon, 23 Jun 2025 16:14:35 +0200
Subject: [PATCH] Spreadsheet: Only use validator when when prefix is not '='

---
 src/Gui/ExpressionCompleter.cpp             | 4 ++--
 src/Mod/Spreadsheet/Gui/SpreadsheetView.cpp | 2 ++
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Gui/ExpressionCompleter.cpp b/src/Gui/ExpressionCompleter.cpp
index 1499bf2ce6..332cfbc692 100644
--- a/src/Gui/ExpressionCompleter.cpp
+++ b/src/Gui/ExpressionCompleter.cpp
@@ -921,15 +921,15 @@ ExpressionLineEdit::ExpressionLineEdit(QWidget* parent,
     , noProperty(noProperty)
     , exactMatch(false)
     , checkInList(checkInList)
-    , checkPrefix(checkPrefix)
 {
-    setValidator(new ExpressionValidator(this));
+    setPrefix(checkPrefix);
     connect(this, &QLineEdit::textEdited, this, &ExpressionLineEdit::slotTextChanged);
 }
 
 void ExpressionLineEdit::setPrefix(char prefix)
 {
     checkPrefix = prefix;
+    setValidator(checkPrefix == '=' ? nullptr : new ExpressionValidator(this));
 }
 
 void ExpressionLineEdit::setDocumentObject(const App::DocumentObject* currentDocObj,
diff --git a/src/Mod/Spreadsheet/Gui/SpreadsheetView.cpp b/src/Mod/Spreadsheet/Gui/SpreadsheetView.cpp
index 8dab3b284c..463d3640e4 100644
--- a/src/Mod/Spreadsheet/Gui/SpreadsheetView.cpp
+++ b/src/Mod/Spreadsheet/Gui/SpreadsheetView.cpp
@@ -154,6 +154,8 @@ SheetView::SheetView(Gui::Document* pcDocument, App::DocumentObject* docObj, QWi
     // Set document object to create auto completer
     ui->cellContent->setDocumentObject(sheet);
     ui->cellAlias->setDocumentObject(sheet);
+
+    ui->cellContent->setPrefix('=');
 }
 
 SheetView::~SheetView()