symfony · fabpot · Oct 12, 2015 · Oct 11, 2015
diff --git a/src/Symfony/Component/Yaml/CHANGELOG.md b/src/Symfony/Component/Yaml/CHANGELOG.md
@@ -1,6 +1,12 @@
 CHANGELOG
 =========

+3.0.0
+-----
+
+ * Yaml::parse() now throws an exception when a blackslash is not escaped
+   in double-quoted strings
+
 2.8.0
 -----


diff --git a/src/Symfony/Component/Yaml/Tests/InlineTest.php b/src/Symfony/Component/Yaml/Tests/InlineTest.php
@@ -71,12 +71,12 @@ public function testHashStringsResemblingExponentialNumericsShouldNotBeChangedTo
    }

    /**
-     * @group legacy
-     * throws \Symfony\Component\Yaml\Exception\ParseException in 3.0
+     * @expectedException        \Symfony\Component\Yaml\Exception\ParseException
+     * @expectedExceptionMessage Found unknown escape character "\V".
     */
    public function testParseScalarWithNonEscapedBlackslashShouldThrowException()
    {
-        $this->assertSame('Foo\Var', Inline::parse('"Foo\Var"'));
+        Inline::parse('"Foo\Var"');
    }

    /**

diff --git a/src/Symfony/Component/Yaml/Unescaper.php b/src/Symfony/Component/Yaml/Unescaper.php
@@ -11,6 +11,8 @@

 namespace Symfony\Component\Yaml;

+use Symfony\Component\Yaml\Exception\ParseException;
+
 /**
 * Unescaper encapsulates unescaping rules for single and double-quoted
 * YAML strings.
@@ -59,11 +61,8 @@ public function unescapeDoubleQuotedString($value)
     * @param string $value An escaped character
     *
     * @return string The unescaped character
-     *
-     * @internal This method is public to be usable as callback. It should not
-     *           be used in user code. Should be changed in 3.0.
     */
-    public function unescapeCharacter($value)
+    private function unescapeCharacter($value)
    {
        switch ($value[1]) {
            case '0':
@@ -113,9 +112,7 @@ public function unescapeCharacter($value)
            case 'U':
                return self::utf8chr(hexdec(substr($value, 2, 8)));
            default:
-                @trigger_error('Not escaping a backslash in a double-quoted string is deprecated since Symfony 2.8 and will throw a ParseException in 3.0.', E_USER_DEPRECATED);
-
-                return $value;
+                throw new ParseException(sprintf('Found unknown escape character "%s".', $value));
        }
    }