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

2 files changed, 10 insertions, 8 deletions

diff --git a/docs/feature_unicode.md b/docs/feature_unicode.md
index 6975414588..a6f2cb4d0d 100644
--- a/docs/feature_unicode.md
+++ b/docs/feature_unicode.md
@@ -90,13 +90,15 @@ Unicode input in QMK works by inputting a sequence of characters to the OS, sort
 
 The following input modes are available:
 
-* **`UC_OSX`**: macOS built-in Unicode hex input. Supports code points up to `0xFFFF` (`0x10FFFF` with Unicode Map).
+* **`UC_MAC`**: macOS built-in Unicode hex input. Supports code points up to `0xFFFF` (`0x10FFFF` with Unicode Map).
 
   To enable, go to _System Preferences > Keyboard > Input Sources_, add _Unicode Hex Input_ to the list (it's under _Other_), then activate it from the input dropdown in the Menu Bar.
-  By default, this mode uses the left Option key (`KC_LALT`) for Unicode input, but this can be changed by defining [`UNICODE_KEY_OSX`](#input-key-configuration) with another keycode.
+  By default, this mode uses the left Option key (`KC_LALT`) for Unicode input, but this can be changed by defining [`UNICODE_KEY_MAC`](#input-key-configuration) with another keycode.
 
   !> Using the _Unicode Hex Input_ input source may disable some Option based shortcuts, such as Option + Left Arrow and Option + Right Arrow.
 
+  !> `UC_OSX` is a deprecated alias of `UC_MAC` that will be removed in a future version of QMK.
+
 * **`UC_LNX`**: Linux built-in IBus Unicode input. Supports code points up to `0x10FFFF` (all possible code points).
 
   Enabled by default and works almost anywhere on IBus-enabled distros. Without IBus, this mode works under GTK apps, but rarely anywhere else.
@@ -124,7 +126,7 @@ You can switch the input mode at any time by using one of the following keycodes
 |----------------------|---------|------------|--------------------------------------------------------------|
 |`UNICODE_MODE_FORWARD`|`UC_MOD` |Next in list|[Cycle](#input-mode-cycling) through selected modes           |
 |`UNICODE_MODE_REVERSE`|`UC_RMOD`|Prev in list|[Cycle](#input-mode-cycling) through selected modes in reverse|
-|`UNICODE_MODE_OSX`    |`UC_M_OS`|`UC_OSX`    |Switch to macOS input                                         |
+|`UNICODE_MODE_MAC`    |`UC_M_MA`|`UC_MAC`    |Switch to macOS input                                         |
 |`UNICODE_MODE_LNX`    |`UC_M_LN`|`UC_LNX`    |Switch to Linux input                                         |
 |`UNICODE_MODE_WIN`    |`UC_M_WI`|`UC_WIN`    |Switch to Windows input                                       |
 |`UNICODE_MODE_BSD`    |`UC_M_BS`|`UC_BSD`    |Switch to BSD input (not implemented)                         |
@@ -145,9 +147,9 @@ If you have the [Audio feature](feature_audio.md) enabled on the board, you can
 For instance, you can add these definitions to your `config.h` file:
 
 ```c
-#define UNICODE_SONG_OSX  COIN_SOUND
+#define UNICODE_SONG_MAC  AUDIO_ON_SOUND
 #define UNICODE_SONG_LNX  UNICODE_LINUX
-#define UNICODE_SONG_BSD  MARIO_GAMEOVER
+#define UNICODE_SONG_BSD  TERMINAL_SOUND
 #define UNICODE_SONG_WIN  UNICODE_WINDOWS
 #define UNICODE_SONG_WINC UNICODE_WINDOWS
 ```
@@ -171,7 +173,7 @@ You can customize the keys used to trigger Unicode input for macOS, Linux and Wi
 
 |Define            |Type      |Default           |Example                                    |
 |------------------|----------|------------------|-------------------------------------------|
-|`UNICODE_KEY_OSX` |`uint8_t` |`KC_LALT`         |`#define UNICODE_KEY_OSX  KC_RALT`         |
+|`UNICODE_KEY_MAC` |`uint8_t` |`KC_LALT`         |`#define UNICODE_KEY_MAC  KC_RALT`         |
 |`UNICODE_KEY_LNX` |`uint16_t`|`LCTL(LSFT(KC_U))`|`#define UNICODE_KEY_LNX  LCTL(LSFT(KC_E))`|
 |`UNICODE_KEY_WINC`|`uint8_t` |`KC_RALT`         |`#define UNICODE_KEY_WINC KC_RGUI`         |
 
@@ -180,7 +182,7 @@ You can customize the keys used to trigger Unicode input for macOS, Linux and Wi
 You can choose which input modes are available for cycling through. By default, this is disabled. If you want to enable it, limiting it to just the modes you use makes sense. Note that the values in the list are comma-delimited.
 
 ```c
-#define UNICODE_SELECTED_MODES UC_OSX, UC_LNX, UC_WIN, UC_WINC
+#define UNICODE_SELECTED_MODES UC_MAC, UC_LNX, UC_WIN, UC_WINC
 ```
 
 You can cycle through the selected modes by using the `UC_MOD`/`UC_RMOD` keycodes, or by calling `cycle_unicode_input_mode(offset)` in your code (`offset` is how many modes to move forward by, so +1 corresponds to `UC_MOD`).
diff --git a/docs/keycodes.md b/docs/keycodes.md
index 84da3d4c6e..1a388f106b 100644
--- a/docs/keycodes.md
+++ b/docs/keycodes.md
@@ -543,7 +543,7 @@ See also: [Unicode Support](feature_unicode.md)
 |`XP(i, j)`            |         |Send Unicode code point at index `i`, or `j` if Shift/Caps is on|
 |`UNICODE_MODE_FORWARD`|`UC_MOD` |Cycle through selected input modes                              |
 |`UNICODE_MODE_REVERSE`|`UC_RMOD`|Cycle through selected input modes in reverse                   |
-|`UNICODE_MODE_OSX`    |`UC_M_OS`|Switch to macOS input                                           |
+|`UNICODE_MODE_MAC`    |`UC_M_MA`|Switch to macOS input                                           |
 |`UNICODE_MODE_LNX`    |`UC_M_LN`|Switch to Linux input                                           |
 |`UNICODE_MODE_WIN`    |`UC_M_WI`|Switch to Windows input                                         |
 |`UNICODE_MODE_BSD`    |`UC_M_BS`|Switch to BSD input (not implemented)                           |