Rename UC_OSX (and related constants) to UC_MAC (#8589)

* Rename UC_OSX (and related constants) to UC_MAC

* Update UNICODE_SONG_OSX references to UNICODE_SONG_MAC

* Update UC_M_OS references to UC_M_MA

* Add UC_OSX alias for backwards compatibility

* Add deprecation warning for UC_OSX to Unicode docs

* Add UC_M_OS alias for backwards compatibility

* Update newly found UC_M_OS and UNICODE_SONG_OSX references

* Add legacy UNICODE_MODE_OSX alias, revert changes to user keymaps

* Add legacy UNICODE_SONG_OSX alias, revert changes to user keymaps

* Replace removed sounds in Unicode song doc examples

3 files changed, 24 insertions, 15 deletions

diff --git a/quantum/process_keycode/process_unicode_common.c b/quantum/process_keycode/process_unicode_common.c
index fc392813ae..48ce3961ad 100644
--- a/quantum/process_keycode/process_unicode_common.c
+++ b/quantum/process_keycode/process_unicode_common.c
@@ -78,8 +78,8 @@ __attribute__((weak)) void unicode_input_start(void) {
     clear_mods();                     // Unregister mods to start from a clean state
 
     switch (unicode_config.input_mode) {
-        case UC_OSX:
-            register_code(UNICODE_KEY_OSX);
+        case UC_MAC:
+            register_code(UNICODE_KEY_MAC);
             break;
         case UC_LNX:
             tap_code16(UNICODE_KEY_LNX);
@@ -99,8 +99,8 @@ __attribute__((weak)) void unicode_input_start(void) {
 
 __attribute__((weak)) void unicode_input_finish(void) {
     switch (unicode_config.input_mode) {
-        case UC_OSX:
-            unregister_code(UNICODE_KEY_OSX);
+        case UC_MAC:
+            unregister_code(UNICODE_KEY_MAC);
             break;
         case UC_LNX:
             tap_code(KC_SPC);
@@ -118,8 +118,8 @@ __attribute__((weak)) void unicode_input_finish(void) {
 
 __attribute__((weak)) void unicode_input_cancel(void) {
     switch (unicode_config.input_mode) {
-        case UC_OSX:
-            unregister_code(UNICODE_KEY_OSX);
+        case UC_MAC:
+            unregister_code(UNICODE_KEY_MAC);
             break;
         case UC_LNX:
         case UC_WINC:
@@ -253,11 +253,11 @@ bool process_unicode_common(uint16_t keycode, keyrecord_t *record) {
                 cycle_unicode_input_mode(-1);
                 break;
 
-            case UNICODE_MODE_OSX:
-                set_unicode_input_mode(UC_OSX);
-#if defined(AUDIO_ENABLE) && defined(UNICODE_SONG_OSX)
-                static float song_osx[][2] = UNICODE_SONG_OSX;
-                PLAY_SONG(song_osx);
+            case UNICODE_MODE_MAC:
+                set_unicode_input_mode(UC_MAC);
+#if defined(AUDIO_ENABLE) && defined(UNICODE_SONG_MAC)
+                static float song_mac[][2] = UNICODE_SONG_MAC;
+                PLAY_SONG(song_mac);
 #endif
                 break;
             case UNICODE_MODE_LNX:
diff --git a/quantum/process_keycode/process_unicode_common.h b/quantum/process_keycode/process_unicode_common.h
index 13b6431bf0..5421c28c7f 100644
--- a/quantum/process_keycode/process_unicode_common.h
+++ b/quantum/process_keycode/process_unicode_common.h
@@ -23,8 +23,8 @@
 #endif
 
 // Keycodes used for starting Unicode input on different platforms
-#ifndef UNICODE_KEY_OSX
-#    define UNICODE_KEY_OSX KC_LALT
+#ifndef UNICODE_KEY_MAC
+#    define UNICODE_KEY_MAC KC_LALT
 #endif
 #ifndef UNICODE_KEY_LNX
 #    define UNICODE_KEY_LNX LCTL(LSFT(KC_U))
@@ -49,8 +49,17 @@
 #    define UNICODE_TYPE_DELAY 10
 #endif
 
+// Deprecated aliases
+#if !defined(UNICODE_KEY_MAC) && defined(UNICODE_KEY_OSX)
+#    define UNICODE_KEY_MAC UNICODE_KEY_OSX
+#endif
+#if !defined(UNICODE_SONG_MAC) && defined(UNICODE_SONG_OSX)
+#    define UNICODE_SONG_MAC UNICODE_SONG_OSX
+#endif
+#define UC_OSX UC_MAC
+
 enum unicode_input_modes {
-    UC_OSX,    // Mac OS X using Unicode Hex Input
+    UC_MAC,    // macOS using Unicode Hex Input
     UC_LNX,    // Linux using IBus
     UC_WIN,    // Windows using EnableHexNumpad
     UC_BSD,    // BSD (not implemented)
diff --git a/quantum/process_keycode/process_unicodemap.c b/quantum/process_keycode/process_unicodemap.c
index 1be51a995c..5445cde129 100644
--- a/quantum/process_keycode/process_unicodemap.c
+++ b/quantum/process_keycode/process_unicodemap.c
@@ -43,7 +43,7 @@ bool process_unicodemap(uint16_t keycode, keyrecord_t *record) {
         if (code > 0x10FFFF || (code > 0xFFFF && input_mode == UC_WIN)) {
             // Character is out of range supported by the platform
             unicode_input_cancel();
-        } else if (code > 0xFFFF && input_mode == UC_OSX) {
+        } else if (code > 0xFFFF && input_mode == UC_MAC) {
             // Convert to UTF-16 surrogate pair on Mac
             code -= 0x10000;
             uint32_t lo = code & 0x3FF, hi = (code & 0xFFC00) >> 10;