From e6c9e3f81dda723e289fa31883b326c086979c7d Mon Sep 17 00:00:00 2001
From: vaxerski <43317083+vaxerski@users.noreply.github.com>
Date: Fri, 30 Sep 2022 21:54:13 +0100
Subject: [PATCH] add case for empty strings in isNumber

---
 src/helpers/MiscFunctions.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/helpers/MiscFunctions.cpp b/src/helpers/MiscFunctions.cpp
index 17e7a1a1..22afd4a0 100644
--- a/src/helpers/MiscFunctions.cpp
+++ b/src/helpers/MiscFunctions.cpp
@@ -174,6 +174,9 @@ bool isNumber(const std::string& str, bool allowfloat) {
     std::string copy = str;
     if (*copy.begin() == '-')
         copy = copy.substr(1);
+    
+    if (copy.empty())
+        return false;
 
     bool point = !allowfloat;
     for (auto& c : copy) {