Merge branch '6.4' into 7.0

* 6.4: (22 commits)
  fix merge
  [AssetMapper] Check asset/vendor directory is writable
  detect wrong e-mail validation modes
  detect wrong usages of minMessage/maxMessage in options
  [Security] Remove workflow from empty folder
  read form values using the chain data accessor
  [Validator] Review Bulgarian (bg) translation
  Reviewed italian translation
  Fix french translation
  call substr() with integer offsets
  [Finder] Also consider .git inside the basedir of in() directory
  review: FR translation
  [Serializer] Add AbstractNormalizerContextBuilder::defaultConstructorArguments()
  Update spanish and catalan translations
  Update AbstractSchemaListener.php to adjust more database params
  Updated id=113 Arabic translation.
  #53771 Updated validator Lithuanian translations
  review: translation RU
  [PropertyInfo] Fix PHPStan properties type in trait
  explicitly cast boolean SSL stream options
  ...

Author: xabbuh

Parser.php

@@ -633,12 +633,12 @@ private function getNextEmbedBlock(?int $indentation = null, bool $inSequence =
             }
 
             if ($this->isCurrentLineBlank()) {
-                $data[] = substr($this->currentLine, $newIndent);
+                $data[] = substr($this->currentLine, $newIndent ?? 0);
                 continue;
             }
 
             if ($indent >= $newIndent) {
-                $data[] = substr($this->currentLine, $newIndent);
+                $data[] = substr($this->currentLine, $newIndent ?? 0);
             } elseif ($this->isCurrentLineComment()) {
                 $data[] = $this->currentLine;
             } elseif (0 == $indent) {

Tests/ParserTest.php

@@ -1475,13 +1475,13 @@ public static function getBinaryData()
 data: !!binary |
     SGVsbG8gd29ybGQ=
 EOT
-    ],
+            ],
             'containing spaces in block scalar' => [
                 <<<'EOT'
 data: !!binary |
     SGVs bG8gd 29ybGQ=
 EOT
-    ],
+            ],
         ];
     }
 
@@ -2957,6 +2957,11 @@ public function testParseIdeographicSpaces()
         ], $this->parser->parse($expected));
     }
 
+    public function testSkipBlankLines()
+    {
+        $this->assertSame(['foo' => [null]], (new Parser())->parse("foo:\n-\n\n"));
+    }
+
     private function assertSameData($expected, $actual)
     {
         $this->assertEquals($expected, $actual);