Fixed an issue with unescaped carets at the beginning of a character class

Author: JoshyPHP

composer.json

@@ -1,6 +1,6 @@
 {
 	"name": "s9e/regexp-builder",
-	"version": "1.4.0",
+	"version": "1.4.1",
 	"type": "library",
 	"description": "Single-purpose library that generates regular expressions that match a list of strings.",
 	"homepage": "https://github.com/s9e/RegexpBuilder/",

src/Escaper.php

@@ -12,7 +12,7 @@ class Escaper
 	/**
 	* @var array Characters to escape in a character class
 	*/
-	public $inCharacterClass = ['-' => '\\-', '\\' => '\\\\', ']' => '\\]'];
+	public $inCharacterClass = ['-' => '\\-', '\\' => '\\\\', ']' => '\\]', '^' => '\\^'];
 
 	/**
 	* @var array Characters to escape outside of a character class

tests/BuilderTest.php

@@ -132,6 +132,10 @@ public function getBuilderTests()
 				'(?:\\n|.)',
 				['meta' => ['.' => '.'], 'output' => 'PHP']
 			],
+			[
+				['^', '_'],
+				'[\\^_]'
+			],
 		];
 	}
 }

tests/EscaperTest.php

@@ -24,6 +24,8 @@ public function getEscapeCharacterClassTests()
 		return [
 			['-', '\\-'],
 			['\\', '\\\\'],
+			['[', '['],
+			['^', '\\^'],
 			[']', '\\]'],
 			['/', '\\/'],
 			['/', '/', '#'],

tests/SerializerTest.php

@@ -111,7 +111,7 @@ public function getSerializerTests()
 					[94],
 					[123]
 				],
-				'[\\]^{]'
+				'[\\]\\^{]'
 			],
 			[
 				[