Fix bug with layer caching in get_event_keycode (#8693)

* Fix bug with layer caching in get_event_keycode

* Improve naming

5 files changed, 16 insertions, 13 deletions

diff --git a/quantum/quantum.c b/quantum/quantum.c
index 76a48cc77..2053a1a5f 100644
--- a/quantum/quantum.c
+++ b/quantum/quantum.c
@@ -149,18 +149,21 @@ void reset_keyboard(void) {
 }
 
 /* Convert record into usable keycode via the contained event. */
-uint16_t get_record_keycode(keyrecord_t *record) { return get_event_keycode(record->event); }
+uint16_t get_record_keycode(keyrecord_t *record, bool update_layer_cache) { return get_event_keycode(record->event, update_layer_cache); }
 
 /* Convert event into usable keycode. Checks the layer cache to ensure that it
  * retains the correct keycode after a layer change, if the key is still pressed.
+ * "update_layer_cache" is to ensure that it only updates the layer cache when
+ * appropriate, otherwise, it will update it and cause layer tap (and other keys)
+ * from triggering properly.
  */
-uint16_t get_event_keycode(keyevent_t event) {
+uint16_t get_event_keycode(keyevent_t event, bool update_layer_cache) {
 #if !defined(NO_ACTION_LAYER) && !defined(STRICT_LAYER_RELEASE)
     /* TODO: Use store_or_get_action() or a similar function. */
     if (!disable_action_cache) {
         uint8_t layer;
 
-        if (event.pressed) {
+        if (event.pressed && update_layer_cache) {
             layer = layer_switch_get_layer(event.key);
             update_source_layers_cache(event.key, layer);
         } else {
@@ -174,7 +177,7 @@ uint16_t get_event_keycode(keyevent_t event) {
 
 /* Get keycode, and then call keyboard function */
 void post_process_record_quantum(keyrecord_t *record) {
-    uint16_t keycode = get_record_keycode(record);
+    uint16_t keycode = get_record_keycode(record, false);
     post_process_record_kb(keycode, record);
 }
 
@@ -182,7 +185,7 @@ void post_process_record_quantum(keyrecord_t *record) {
     then processes internal quantum keycodes, and then processes
     ACTIONs.                                                      */
 bool process_record_quantum(keyrecord_t *record) {
-    uint16_t keycode = get_record_keycode(record);
+    uint16_t keycode = get_record_keycode(record, true);
 
     // This is how you use actions here
     // if (keycode == KC_LEAD) {
diff --git a/quantum/quantum.h b/quantum/quantum.h
index 4b94ebcc0..45f44f49a 100644
--- a/quantum/quantum.h
+++ b/quantum/quantum.h
@@ -252,8 +252,8 @@ void     matrix_init_kb(void);
 void     matrix_scan_kb(void);
 void     matrix_init_user(void);
 void     matrix_scan_user(void);
-uint16_t get_record_keycode(keyrecord_t *record);
-uint16_t get_event_keycode(keyevent_t event);
+uint16_t get_record_keycode(keyrecord_t *record, bool update_layer_cache);
+uint16_t get_event_keycode(keyevent_t event, bool update_layer_cache);
 bool     process_action_kb(keyrecord_t *record);
 bool     process_record_kb(uint16_t keycode, keyrecord_t *record);
 bool     process_record_user(uint16_t keycode, keyrecord_t *record);
diff --git a/tmk_core/common/action.c b/tmk_core/common/action.c
index 74db245c1..27c0abe6f 100644
--- a/tmk_core/common/action.c
+++ b/tmk_core/common/action.c
@@ -324,7 +324,7 @@ void process_action(keyrecord_t *record, action_t action) {
 #    if !defined(IGNORE_MOD_TAP_INTERRUPT) || defined(IGNORE_MOD_TAP_INTERRUPT_PER_KEY)
                             if (
 #        ifdef IGNORE_MOD_TAP_INTERRUPT_PER_KEY
-                                !get_ignore_mod_tap_interrupt(get_event_keycode(record->event)) &&
+                                !get_ignore_mod_tap_interrupt(get_event_keycode(record->event, false)) &&
 #        endif
                                 record->tap.interrupted) {
                                 dprint("mods_tap: tap: cancel: add_mods\n");
diff --git a/tmk_core/common/action_tapping.c b/tmk_core/common/action_tapping.c
index acce3ee51..34f08d890 100644
--- a/tmk_core/common/action_tapping.c
+++ b/tmk_core/common/action_tapping.c
@@ -22,7 +22,7 @@
 __attribute__((weak)) uint16_t get_tapping_term(uint16_t keycode) { return TAPPING_TERM; }
 
 #    ifdef TAPPING_TERM_PER_KEY
-#        define WITHIN_TAPPING_TERM(e) (TIMER_DIFF_16(e.time, tapping_key.event.time) < get_tapping_term(get_event_keycode(tapping_key.event)))
+#        define WITHIN_TAPPING_TERM(e) (TIMER_DIFF_16(e.time, tapping_key.event.time) < get_tapping_term(get_event_keycode(tapping_key.event, false)))
 #    else
 #        define WITHIN_TAPPING_TERM(e) (TIMER_DIFF_16(e.time, tapping_key.event.time) < TAPPING_TERM)
 #    endif
@@ -122,10 +122,10 @@ bool process_tapping(keyrecord_t *keyp) {
 #    if defined(TAPPING_TERM_PER_KEY) || (TAPPING_TERM >= 500) || defined(PERMISSIVE_HOLD) || defined(PERMISSIVE_HOLD_PER_KEY)
                 else if (
 #        ifdef TAPPING_TERM_PER_KEY
-                    (get_tapping_term(get_event_keycode(tapping_key.event)) >= 500) &&
+                    (get_tapping_term(get_event_keycode(tapping_key.event, false)) >= 500) &&
 #        endif
 #        ifdef PERMISSIVE_HOLD_PER_KEY
-                    !get_permissive_hold(get_event_keycode(tapping_key.event), keyp) &&
+                    !get_permissive_hold(get_event_keycode(tapping_key.event, false), keyp) &&
 #        endif
                     IS_RELEASED(event) && waiting_buffer_typed(event)) {
                     debug("Tapping: End. No tap. Interfered by typing key\n");
@@ -246,7 +246,7 @@ bool process_tapping(keyrecord_t *keyp) {
 #    if !defined(TAPPING_FORCE_HOLD) || defined(TAPPING_FORCE_HOLD_PER_KEY)
                     if (
 #        ifdef TAPPING_FORCE_HOLD_PER_KEY
-                        !get_tapping_force_hold(get_event_keycode(tapping_key.event), keyp) &&
+                        !get_tapping_force_hold(get_event_keycode(tapping_key.event, false), keyp) &&
 #        endif
                         !tapping_key.tap.interrupted && tapping_key.tap.count > 0) {
                         // sequential tap.
diff --git a/tmk_core/common/action_tapping.h b/tmk_core/common/action_tapping.h
index 509d5eabd..5eaef1c5f 100644
--- a/tmk_core/common/action_tapping.h
+++ b/tmk_core/common/action_tapping.h
@@ -32,7 +32,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define WAITING_BUFFER_SIZE 8
 
 #ifndef NO_ACTION_TAPPING
-uint16_t get_event_keycode(keyevent_t event);
+uint16_t get_event_keycode(keyevent_t event, bool update_layer_cache);
 uint16_t get_tapping_term(uint16_t keycode);
 void     action_tapping_process(keyrecord_t record);
 #endif