Merge branch '7.0' into 7.1

* 7.0:
  clarify how to disable client-side validation using the Regex constraint
  example function param 1 requires string

components/var_dumper.rst

@@ -623,7 +623,7 @@ For example, to get a dump as a string in a variable, you can do::
 
     $dumper->dump(
         $cloner->cloneVar($variable),
-        function (int $line, int $depth) use (&$output): void {
+        function (string $line, int $depth) use (&$output): void {
             // A negative depth means "end of dump"
             if ($depth >= 0) {
                 // Adds a two spaces indentation to the line

reference/constraints/Regex.rst

@@ -163,7 +163,7 @@ Options
 ``htmlPattern``
 ~~~~~~~~~~~~~~~
 
-**type**: ``string|boolean`` **default**: ``null``
+**type**: ``string|null`` **default**: ``null``
 
 This option specifies the pattern to use in the HTML5 ``pattern`` attribute.
 You usually don't need to specify this option because by default, the constraint
@@ -243,7 +243,7 @@ need to specify the HTML5 compatible pattern in the ``htmlPattern`` option:
             }
         }
 
-Setting ``htmlPattern`` to false will disable client side validation.
+Setting ``htmlPattern`` to the empty string will disable client side validation.
 
 ``match``
 ~~~~~~~~~