docs and changelog

CHANGELOG

@@ -1,5 +1,6 @@
 # 3.19.0 (2025-XX-XX)
 
+ * Add the `invoke` filter
  * Make `{}` optional for the `types` tag
  * Add `LastModifiedExtensionInterface` and implementation in `AbstractExtension` to track modification of runtime classes
 

doc/filters/invoke.rst

@@ -0,0 +1,19 @@
+``invoke``
+=======
+
+The ``invoke`` filter invokes an arrow function with the the given arguments:
+
+.. code-block:: twig
+
+    {% set person = {first: "Bob", last: "Smith"} %}
+    {% set func = p => "#{p.first} #{p.last}" %}
+
+    {{ func|invoke(person) }}
+    {# outputs Bob Smith #}
+
+Note that the arrow function has access to the current context.
+
+Arguments
+---------
+
+All given arguments are passed to the arrow function

doc/templates.rst

@@ -1018,6 +1018,12 @@ The following operators don't fit into any of the other categories:
     Arrow function support for functions, macros, and method calls was added in
     Twig 3.15 (filters and tests were already supported).
 
+  Arrow functions can be invoked using the ``invoke`` filter.
+
+    .. versionadded:: 3.19
+
+    The ``invoke`` filter has been added in Twig 3.19.
+
 Operators
 ~~~~~~~~~