From 38ce78fceda27dcebb6eb1d7d27bdb95fa0a34ee Mon Sep 17 00:00:00 2001
From: Yuri Kuznetsov <yurikuzn@users.noreply.github.com>
Date: Wed, 24 Apr 2024 13:33:52 +0300
Subject: [PATCH] formula fix string double backslash and quote

---
 application/Espo/Core/Formula/Parser.php      |  2 +-
 .../unit/Espo/Core/Formula/EvaluatorTest.php  | 20 +++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/application/Espo/Core/Formula/Parser.php b/application/Espo/Core/Formula/Parser.php
index a7fd43139a..1e5014768b 100644
--- a/application/Espo/Core/Formula/Parser.php
+++ b/application/Espo/Core/Formula/Parser.php
@@ -144,7 +144,7 @@ class Parser
     {
         return
             ($string[$i - 1] ?? null) !== "\\" ||
-            ($string[$i - 2] ?? null) === "\\";
+            (($string[$i - 2] ?? null) === "\\" && ($string[$i - 3] ?? null) !== "\\");
     }
 
     /**
diff --git a/tests/unit/Espo/Core/Formula/EvaluatorTest.php b/tests/unit/Espo/Core/Formula/EvaluatorTest.php
index 499eaaa68c..e48b1bcaa7 100644
--- a/tests/unit/Espo/Core/Formula/EvaluatorTest.php
+++ b/tests/unit/Espo/Core/Formula/EvaluatorTest.php
@@ -1499,4 +1499,24 @@ class EvaluatorTest extends \PHPUnit\Framework\TestCase
 
         $this->assertEquals("\n\\test\n", $result);
     }
+
+    public function testStrings8(): void
+    {
+        $expression = '"\\\\\\""';
+
+        /** @noinspection PhpUnhandledExceptionInspection */
+        $result = $this->evaluator->process($expression);
+
+        $this->assertEquals("\\\"", $result);
+    }
+
+    public function testStrings9(): void
+    {
+        $expression = '"\\\\\\"test\\\\\\""';
+
+        /** @noinspection PhpUnhandledExceptionInspection */
+        $result = $this->evaluator->process($expression);
+
+        $this->assertEquals("\\\"test\\\"", $result);
+    }
 }