Switched to default ON for multiline template tags

django/template/engine.py

@@ -1,4 +1,5 @@
 import functools
+import warnings
 
 from django.core.exceptions import ImproperlyConfigured
 from django.utils.functional import cached_property
@@ -8,6 +9,7 @@ from .base import Template
 from .context import Context, _builtin_context_processors
 from .exceptions import TemplateDoesNotExist
 from .library import import_library
+from ..utils.deprecation import RemovedInDjango60Warning
 
 
 class Engine:
@@ -29,13 +31,13 @@ class Engine:
         libraries=None,
         builtins=None,
         autoescape=True,
-        multiline=False,
+        multiline=True,
     ):
-        # if not multiline:
-        #     warnings.warn(
-        #         "multiline support in templates will become the default in Django 6.0",
-        #         RemovedInDjango60Warning,
-        #     )
+        if not multiline:
+            warnings.warn(
+                "multiline support in templates will become the default in Django 6.0",
+                RemovedInDjango60Warning,
+            )
         if dirs is None:
             dirs = []
         if context_processors is None: