Merge branch '7.4' into 8.0

* 7.4:
  [Translation] Make the extractor alias optional
  [Cache] Fix accepting named closures as early-expiration callbacks
  [Mime] Update mime types
  [HttpKernel] Conflict with symfony/flex < 2.10
  [Yaml] Align unquoted multiline scalar parsing with spec for comments
  work around limitation in JsonResponse when the data is null
  do not use recipient phone numbers as sender e-mail addresses
  [Dotenv] DotenvDumpCommand cannot be internal

Author: nicolas-grekas

Parser.php

@@ -782,7 +782,7 @@ private function parseValue(string $value, int $flags, string $context): mixed
                         }
 
                         if ($this->isCurrentLineComment()) {
-                            continue;
+                            break;
                         }
 
                         $lines[] = trim($this->currentLine);

Tests/ParserTest.php

@@ -1756,25 +1756,22 @@ public function testParseMultiLineUnquotedString()
         $this->assertSame(['foo' => 'bar baz foobar foo', 'bar' => 'baz'], $this->parser->parse($yaml));
     }
 
-    #[DataProvider('unquotedStringWithTrailingComment')]
-    public function testUnquotedMultilineScalarIgnoresComments(string $yaml, array $expected)
+    #[DataProvider('getUnquotedMultilineScalarHandlesCommentsAndBlanksData')]
+    public function testUnquotedMultilineScalarHandlesCommentsAndBlanks(string $yaml, array $expected)
     {
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
 
-    public static function getUnquotedMultilineScalarIgnoresCommentsData()
+    public static function getUnquotedMultilineScalarHandlesCommentsAndBlanksData()
     {
-        yield 'comments interspersed' => [
+        yield 'comments interspersed stops scalar' => [
             <<<YAML
                 key: unquoted
-                  # this comment should be ignored
-                  next line
-                  # another comment
-                  final line
+                  # this comment terminates
                 another_key: works
                 YAML,
             [
-                'key' => 'unquoted next line final line',
+                'key' => 'unquoted',
                 'another_key' => 'works',
             ],
         ];
@@ -1792,17 +1789,16 @@ public static function getUnquotedMultilineScalarIgnoresCommentsData()
             ],
         ];
 
-        yield 'blank lines and comments' => [
+        yield 'blank lines are preserved and comment stops scalar' => [
             <<<YAML
                 key: unquoted
                   next line
 
-                  # this comment should be ignored
-                  final line
+                  # this comment terminates the scalar
                 another_key: works
                 YAML,
             [
-                'key' => "unquoted next line\nfinal line",
+                'key' => 'unquoted next line',
                 'another_key' => 'works',
             ],
         ];
@@ -1821,6 +1817,21 @@ public static function getUnquotedMultilineScalarIgnoresCommentsData()
         ];
     }
 
+    public function testUnquotedMultilineScalarThrowsOnOrphanedLineAfterComment()
+    {
+        $this->expectException(ParseException::class);
+        $this->expectExceptionMessage('Unable to parse at line 3 (near "  next line")');
+
+        $yaml = <<<YAML
+            key: unquoted
+              # this comment terminates
+              next line
+            another_key: works
+            YAML;
+
+        $this->parser->parse($yaml);
+    }
+
     #[DataProvider('unquotedStringWithTrailingComment')]
     public function testParseMultiLineUnquotedStringWithTrailingComment(string $yaml, array $expected)
     {