From bfb25855cb208d855799906dd2121b3d122ca5ea Mon Sep 17 00:00:00 2001
From: AnotherTest <ali.mpfard@gmail.com>
Date: Tue, 22 Dec 2020 07:04:59 +0330
Subject: [PATCH] Spreadsheet: Do not attempt to create columns with "negative"
 indices

---
 Applications/Spreadsheet/Spreadsheet.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Applications/Spreadsheet/Spreadsheet.cpp b/Applications/Spreadsheet/Spreadsheet.cpp
index 3ff03b0916..cac5424d1f 100644
--- a/Applications/Spreadsheet/Spreadsheet.cpp
+++ b/Applications/Spreadsheet/Spreadsheet.cpp
@@ -248,6 +248,9 @@ Optional<String> Sheet::column_arithmetic(const StringView& column_name, int off
     if (!maybe_index.has_value())
         return {};
 
+    if (offset < 0 && maybe_index.value() < (size_t)(0 - offset))
+        return m_columns.first();
+
     auto index = maybe_index.value() + offset;
     if (m_columns.size() > index)
         return m_columns[index];