From 63f4806d7a67100fdf37b5f557ceb9d0982c0775 Mon Sep 17 00:00:00 2001
From: fauxpark <fauxpark@gmail.com>
Date: Wed, 16 Oct 2019 10:02:09 +1100
Subject: Fix bug in `do_code16()` (#6935)

* Fix bug in `do_code16()`

* Remove qk_ mods functions
---
 quantum/quantum.c        | 50 ++++++++++++++++--------------------------------
 tmk_core/common/action.c | 30 +++++++++++++++++++++++++----
 tmk_core/common/action.h |  2 ++
 3 files changed, 45 insertions(+), 37 deletions(-)

diff --git a/quantum/quantum.c b/quantum/quantum.c
index f4999456e3..e615cfc0fe 100644
--- a/quantum/quantum.c
+++ b/quantum/quantum.c
@@ -85,44 +85,28 @@ static void do_code16(uint16_t code, void (*f)(uint8_t)) {
             return;
     }
 
-    if (code & QK_LCTL) f(KC_LCTL);
-    if (code & QK_LSFT) f(KC_LSFT);
-    if (code & QK_LALT) f(KC_LALT);
-    if (code & QK_LGUI) f(KC_LGUI);
+    uint8_t mods_to_send = 0;
 
-    if (code < QK_RMODS_MIN) return;
-
-    if (code & QK_RCTL) f(KC_RCTL);
-    if (code & QK_RSFT) f(KC_RSFT);
-    if (code & QK_RALT) f(KC_RALT);
-    if (code & QK_RGUI) f(KC_RGUI);
-}
-
-static inline void qk_register_weak_mods(uint8_t kc) {
-    add_weak_mods(MOD_BIT(kc));
-    send_keyboard_report();
-}
-
-static inline void qk_unregister_weak_mods(uint8_t kc) {
-    del_weak_mods(MOD_BIT(kc));
-    send_keyboard_report();
-}
-
-static inline void qk_register_mods(uint8_t kc) {
-    add_weak_mods(MOD_BIT(kc));
-    send_keyboard_report();
-}
+    if (code & QK_RMODS_MIN) { // Right mod flag is set
+        if (code & QK_LCTL) mods_to_send |= MOD_BIT(KC_RCTL);
+        if (code & QK_LSFT) mods_to_send |= MOD_BIT(KC_RSFT);
+        if (code & QK_LALT) mods_to_send |= MOD_BIT(KC_RALT);
+        if (code & QK_LGUI) mods_to_send |= MOD_BIT(KC_RGUI);
+    } else {
+        if (code & QK_LCTL) mods_to_send |= MOD_BIT(KC_LCTL);
+        if (code & QK_LSFT) mods_to_send |= MOD_BIT(KC_LSFT);
+        if (code & QK_LALT) mods_to_send |= MOD_BIT(KC_LALT);
+        if (code & QK_LGUI) mods_to_send |= MOD_BIT(KC_LGUI);
+    }
 
-static inline void qk_unregister_mods(uint8_t kc) {
-    del_weak_mods(MOD_BIT(kc));
-    send_keyboard_report();
+    f(mods_to_send);
 }
 
 void register_code16(uint16_t code) {
     if (IS_MOD(code) || code == KC_NO) {
-        do_code16(code, qk_register_mods);
+        do_code16(code, register_mods);
     } else {
-        do_code16(code, qk_register_weak_mods);
+        do_code16(code, register_weak_mods);
     }
     register_code(code);
 }
@@ -130,9 +114,9 @@ void register_code16(uint16_t code) {
 void unregister_code16(uint16_t code) {
     unregister_code(code);
     if (IS_MOD(code) || code == KC_NO) {
-        do_code16(code, qk_unregister_mods);
+        do_code16(code, unregister_mods);
     } else {
-        do_code16(code, qk_unregister_weak_mods);
+        do_code16(code, unregister_weak_mods);
     }
 }
 
diff --git a/tmk_core/common/action.c b/tmk_core/common/action.c
index 1ba38a285e..44b19d368e 100644
--- a/tmk_core/common/action.c
+++ b/tmk_core/common/action.c
@@ -868,9 +868,9 @@ void tap_code(uint8_t code) {
     unregister_code(code);
 }
 
-/** \brief Utilities for actions. (FIXME: Needs better description)
+/** \brief Adds the given physically pressed modifiers and sends a keyboard report immediately.
  *
- * FIXME: Needs documentation.
+ * \param mods A bitfield of modifiers to unregister.
  */
 void register_mods(uint8_t mods) {
     if (mods) {
@@ -879,9 +879,9 @@ void register_mods(uint8_t mods) {
     }
 }
 
-/** \brief Utilities for actions. (FIXME: Needs better description)
+/** \brief Removes the given physically pressed modifiers and sends a keyboard report immediately.
  *
- * FIXME: Needs documentation.
+ * \param mods A bitfield of modifiers to unregister.
  */
 void unregister_mods(uint8_t mods) {
     if (mods) {
@@ -890,6 +890,28 @@ void unregister_mods(uint8_t mods) {
     }
 }
 
+/** \brief Adds the given weak modifiers and sends a keyboard report immediately.
+ *
+ * \param mods A bitfield of modifiers to register.
+ */
+void register_weak_mods(uint8_t mods) {
+    if (mods) {
+        add_weak_mods(mods);
+        send_keyboard_report();
+    }
+}
+
+/** \brief Removes the given weak modifiers and sends a keyboard report immediately.
+ *
+ * \param mods A bitfield of modifiers to unregister.
+ */
+void unregister_weak_mods(uint8_t mods) {
+    if (mods) {
+        del_weak_mods(mods);
+        send_keyboard_report();
+    }
+}
+
 /** \brief Utilities for actions. (FIXME: Needs better description)
  *
  * FIXME: Needs documentation.
diff --git a/tmk_core/common/action.h b/tmk_core/common/action.h
index 633cedb06b..15f4ce15c0 100644
--- a/tmk_core/common/action.h
+++ b/tmk_core/common/action.h
@@ -90,6 +90,8 @@ void unregister_code(uint8_t code);
 void tap_code(uint8_t code);
 void register_mods(uint8_t mods);
 void unregister_mods(uint8_t mods);
+void register_weak_mods(uint8_t mods);
+void unregister_weak_mods(uint8_t mods);
 // void set_mods(uint8_t mods);
 void clear_keyboard(void);
 void clear_keyboard_but_mods(void);
-- 
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