From 10bdb47eae14bd3fd1cd761737b0633cd9c9894b Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Sun, 16 Nov 2025 20:37:06 -0600
Subject: [PATCH] [cover] Modernize to C++17 nested namespaces (#11935)

---
 esphome/components/cover/automation.h   | 6 ++----
 esphome/components/cover/cover.cpp      | 6 ++----
 esphome/components/cover/cover.h        | 6 ++----
 esphome/components/cover/cover_traits.h | 6 ++----
 4 files changed, 8 insertions(+), 16 deletions(-)

diff --git a/esphome/components/cover/automation.h b/esphome/components/cover/automation.h
index 752e0398c1..c0345a7cc6 100644
--- a/esphome/components/cover/automation.h
+++ b/esphome/components/cover/automation.h
@@ -4,8 +4,7 @@
 #include "esphome/core/automation.h"
 #include "cover.h"
 
-namespace esphome {
-namespace cover {
+namespace esphome::cover {
 
 template<typename... Ts> class OpenAction : public Action<Ts...> {
  public:
@@ -131,5 +130,4 @@ class CoverClosedTrigger : public Trigger<> {
   }
 };
 
-}  // namespace cover
-}  // namespace esphome
+}  // namespace esphome::cover
diff --git a/esphome/components/cover/cover.cpp b/esphome/components/cover/cover.cpp
index 3062dba28a..8f735982f1 100644
--- a/esphome/components/cover/cover.cpp
+++ b/esphome/components/cover/cover.cpp
@@ -6,8 +6,7 @@
 
 #include "esphome/core/log.h"
 
-namespace esphome {
-namespace cover {
+namespace esphome::cover {
 
 static const char *const TAG = "cover";
 
@@ -212,5 +211,4 @@ void CoverRestoreState::apply(Cover *cover) {
   cover->publish_state();
 }
 
-}  // namespace cover
-}  // namespace esphome
+}  // namespace esphome::cover
diff --git a/esphome/components/cover/cover.h b/esphome/components/cover/cover.h
index d5db6cfb4f..6c69c05e71 100644
--- a/esphome/components/cover/cover.h
+++ b/esphome/components/cover/cover.h
@@ -7,8 +7,7 @@
 
 #include "cover_traits.h"
 
-namespace esphome {
-namespace cover {
+namespace esphome::cover {
 
 const extern float COVER_OPEN;
 const extern float COVER_CLOSED;
@@ -157,5 +156,4 @@ class Cover : public EntityBase, public EntityBase_DeviceClass {
   ESPPreferenceObject rtc_;
 };
 
-}  // namespace cover
-}  // namespace esphome
+}  // namespace esphome::cover
diff --git a/esphome/components/cover/cover_traits.h b/esphome/components/cover/cover_traits.h
index 79001c3b03..723516318b 100644
--- a/esphome/components/cover/cover_traits.h
+++ b/esphome/components/cover/cover_traits.h
@@ -1,7 +1,6 @@
 #pragma once
 
-namespace esphome {
-namespace cover {
+namespace esphome::cover {
 
 class CoverTraits {
  public:
@@ -26,5 +25,4 @@ class CoverTraits {
   bool supports_stop_{false};
 };
 
-}  // namespace cover
-}  // namespace esphome
+}  // namespace esphome::cover