From b8e6abaf30c7d155068bfe2dcebb1e0d880769dd Mon Sep 17 00:00:00 2001
From: Ruth Comer <10599679+rcomer@users.noreply.github.com>
Date: Sun, 19 May 2024 20:13:16 +0100
Subject: [PATCH 1/2] Make Gridliner deprecation warning show up

---
 lib/cartopy/mpl/gridliner.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/cartopy/mpl/gridliner.py b/lib/cartopy/mpl/gridliner.py
index c750a7543..b2b3a5877 100644
--- a/lib/cartopy/mpl/gridliner.py
+++ b/lib/cartopy/mpl/gridliner.py
@@ -9,6 +9,7 @@
 
 """
 
+import inspect
 import itertools
 import operator
 import warnings
@@ -447,10 +448,13 @@ def __init__(self, axes, crs, draw_labels=False, xlocator=None,
         if auto_update is None:
             auto_update = True
         else:
+            calling_module = inspect.stack()[1].filename
             warnings.warn(
                 "The auto_update parameter was deprecated at Cartopy 0.23.  In future "
                 "the gridlines and labels will always be updated.",
-                DeprecationWarning)
+                DeprecationWarning,
+                stacklevel=(3 if calling_module.endswith('cartopy/mpl/geoaxes.py')
+                            else 2))
         self._auto_update = auto_update
 
     def has_labels(self):

From d8297b81a5c4b2358a5cd629b07a4106dd80c49a Mon Sep 17 00:00:00 2001
From: Ruth Comer <10599679+rcomer@users.noreply.github.com>
Date: Sat, 25 May 2024 12:21:56 +0100
Subject: [PATCH 2/2] Add comment about outstanding issue

---
 lib/cartopy/mpl/gridliner.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/cartopy/mpl/gridliner.py b/lib/cartopy/mpl/gridliner.py
index b2b3a5877..cf06b8b3d 100644
--- a/lib/cartopy/mpl/gridliner.py
+++ b/lib/cartopy/mpl/gridliner.py
@@ -448,6 +448,7 @@ def __init__(self, axes, crs, draw_labels=False, xlocator=None,
         if auto_update is None:
             auto_update = True
         else:
+            # Note #2394 should be addressed before this deprecation expires.
             calling_module = inspect.stack()[1].filename
             warnings.warn(
                 "The auto_update parameter was deprecated at Cartopy 0.23.  In future "