[3.5] Handle additional quoted escape sequences such as "\n"

src/Parser.php

@@ -134,6 +134,8 @@ private static function parseValue($value)
                 case self::ESCAPE_STATE:
                     if ($char === $value[0] || $char === '\\') {
                         return [$data[0].$char, self::QUOTED_STATE];
+                    } elseif (in_array($char, ['f', 'n', 'r', 't', 'v'], true)) {
+                        return [$data[0].stripcslashes('\\' . $char), self::QUOTED_STATE];
                     } else {
                         throw new InvalidFileException(
                             self::getErrorMessage('an unexpected escape sequence', $value)

tests/Dotenv/DotenvTest.php

@@ -229,6 +229,9 @@ public function testMutlilineLoading()
         $dotenv = Dotenv::create($this->fixturesFolder, 'multiline.env');
         $dotenv->load();
         $this->assertSame("test\n     test\"test\"\n     test", getenv('TEST'));
+        $this->assertSame("test\ntest", getenv('TEST_ND'));
+        $this->assertSame("test\ntest", getenv('TEST_NS'));
+
         $this->assertSame('https://vision.googleapis.com/v1/images:annotate?key=', getenv('TEST_EQD'));
         $this->assertSame('https://vision.googleapis.com/v1/images:annotate?key=', getenv('TEST_EQS'));
     }

tests/Dotenv/LinesTest.php

@@ -30,6 +30,8 @@ public function testProcessQuotes()
 
         $expected = [
             "TEST=\"test\n     test\\\"test\\\"\n     test\"",
+            "TEST_ND=\"test\\ntest\"",
+            'TEST_NS=\'test\\ntest\'',
             'TEST_EQD="https://vision.googleapis.com/v1/images:annotate?key="',
             'TEST_EQS=\'https://vision.googleapis.com/v1/images:annotate?key=\'',
         ];

tests/Dotenv/ParserTest.php

@@ -15,6 +15,35 @@ public function testQuotesParse()
         $this->assertSame(['FOO', "BAR  \n"], Parser::parse("FOO=\"BAR  \n\""));
     }
 
+    public function testNewlineParse()
+    {
+        $this->assertSame(['FOO', "\n"], Parser::parse('FOO="\n"'));
+    }
+
+    public function testTabParse()
+    {
+        $this->assertSame(['FOO', "\t"], Parser::parse('FOO=\'\t\''));
+    }
+
+    public function testNonEscapeParse1()
+    {
+        $this->assertSame(['FOO', '\n\v'], Parser::parse('FOO=\n\v'));
+    }
+
+    public function testNonEscapeParse2()
+    {
+        $this->assertSame(['FOO', '\q'], Parser::parse('FOO=\q'));
+    }
+
+    /**
+     * @expectedException \Dotenv\Exception\InvalidFileException
+     * @expectedExceptionMessage Failed to parse dotenv file due to an unexpected escape sequence. Failed at ["\q"].
+     */
+    public function testBadEscapeParse()
+    {
+        Parser::parse('FOO="\q"');
+    }
+
     public function testWhitespaceParse()
     {
         $this->assertSame(['FOO', "\n"], Parser::parse("FOO=\"\n\""));
@@ -62,19 +91,19 @@ public function testParseInvalidName()
 
     /**
      * @expectedException \Dotenv\Exception\InvalidFileException
-     * @expectedExceptionMessage Failed to parse dotenv file due to an unexpected escape sequence. Failed at ["iiiiviiiixiiiiviiii\n"].
+     * @expectedExceptionMessage Failed to parse dotenv file due to an unexpected escape sequence. Failed at ["iiiiviiiixiiiiviiii\a"].
      */
     public function testParserEscapingDouble()
     {
-        Parser::parse('FOO_BAD="iiiiviiiixiiiiviiii\\n"');
+        Parser::parse('FOO_BAD="iiiiviiiixiiiiviiii\\a"');
     }
 
     /**
      * @expectedException \Dotenv\Exception\InvalidFileException
-     * @expectedExceptionMessage Failed to parse dotenv file due to an unexpected escape sequence. Failed at ['iiiiviiiixiiiiviiii\n'].
+     * @expectedExceptionMessage Failed to parse dotenv file due to an unexpected escape sequence. Failed at ['iiiiviiiixiiiiviiii\a'].
      */
     public function testParserEscapingSingle()
     {
-        Parser::parse('FOO_BAD=\'iiiiviiiixiiiiviiii\\n\'');
+        Parser::parse('FOO_BAD=\'iiiiviiiixiiiiviiii\\a\'');
     }
 }

tests/fixtures/env/multiline.env

@@ -2,5 +2,8 @@ TEST="test
      test\"test\"
      test"
 
+TEST_ND="test\ntest"
+TEST_NS='test\ntest'
+
 TEST_EQD="https://vision.googleapis.com/v1/images:annotate?key="
 TEST_EQS='https://vision.googleapis.com/v1/images:annotate?key='