From 9385f1612820541019f3685810d07f352b9b5ee1 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Mon, 23 Mar 2026 08:23:22 -1000
Subject: [PATCH] [text_sensor] Guard raw_callback_ behind
 USE_TEXT_SENSOR_FILTER, save 4 bytes per instance (#15097)

---
 esphome/components/text_sensor/text_sensor.cpp |  2 ++
 esphome/components/text_sensor/text_sensor.h   | 10 +++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/esphome/components/text_sensor/text_sensor.cpp b/esphome/components/text_sensor/text_sensor.cpp
index aa49a85d265..0dc29f9a942 100644
--- a/esphome/components/text_sensor/text_sensor.cpp
+++ b/esphome/components/text_sensor/text_sensor.cpp
@@ -31,7 +31,9 @@ void TextSensor::publish_state(const char *state, size_t len) {
     if (len != this->state.size() || memcmp(state, this->state.data(), len) != 0) {
       this->state.assign(state, len);
     }
+#ifdef USE_TEXT_SENSOR_FILTER
     this->raw_callback_.call(this->state);
+#endif
     ESP_LOGV(TAG, "'%s': Received new state %s", this->name_.c_str(), this->state.c_str());
     this->notify_frontend_();
 #ifdef USE_TEXT_SENSOR_FILTER
diff --git a/esphome/components/text_sensor/text_sensor.h b/esphome/components/text_sensor/text_sensor.h
index 8941790e7cc..3f69e91c8d4 100644
--- a/esphome/components/text_sensor/text_sensor.h
+++ b/esphome/components/text_sensor/text_sensor.h
@@ -64,8 +64,14 @@ class TextSensor : public EntityBase {
 
   template<typename F> void add_on_state_callback(F &&callback) { this->callback_.add(std::forward<F>(callback)); }
   /// Add a callback that will be called every time the sensor sends a raw value.
+  /// When USE_TEXT_SENSOR_FILTER is not enabled, delegates to the regular callback
+  /// since raw state equals filtered state without filter support compiled in.
   template<typename F> void add_on_raw_state_callback(F &&callback) {
+#ifdef USE_TEXT_SENSOR_FILTER
     this->raw_callback_.add(std::forward<F>(callback));
+#else
+    this->callback_.add(std::forward<F>(callback));
+#endif
   }
 
   // ========== INTERNAL METHODS ==========
@@ -77,8 +83,10 @@ class TextSensor : public EntityBase {
  protected:
   /// Notify frontend that state has changed (assumes this->state is already set)
   void notify_frontend_();
+#ifdef USE_TEXT_SENSOR_FILTER
   LazyCallbackManager<void(const std::string &)> raw_callback_;  ///< Storage for raw state callbacks.
-  LazyCallbackManager<void(const std::string &)> callback_;      ///< Storage for filtered state callbacks.
+#endif
+  LazyCallbackManager<void(const std::string &)> callback_;  ///< Storage for filtered state callbacks.
 
 #ifdef USE_TEXT_SENSOR_FILTER
   Filter *filter_list_{nullptr};  ///< Store all active filters.