Add *OPT aliases for *ALT keycodes and macros (#8714)

9 files changed, 28 insertions, 19 deletions

diff --git a/docs/feature_advanced_keycodes.md b/docs/feature_advanced_keycodes.md
index b2abe5dae..b8664074a 100644
--- a/docs/feature_advanced_keycodes.md
+++ b/docs/feature_advanced_keycodes.md
@@ -6,11 +6,11 @@ These allow you to combine a modifier with a keycode. When pressed, the keydown
 |----------|-------------------------------|----------------------------------------------------|
 |`LCTL(kc)`|`C(kc)`                        |Hold Left Control and press `kc`                    |
 |`LSFT(kc)`|`S(kc)`                        |Hold Left Shift and press `kc`                      |
-|`LALT(kc)`|`A(kc)`                        |Hold Left Alt and press `kc`                        |
+|`LALT(kc)`|`A(kc)`, `LOPT(kc)`            |Hold Left Alt and press `kc`                        |
 |`LGUI(kc)`|`G(kc)`, `LCMD(kc)`, `LWIN(kc)`|Hold Left GUI and press `kc`                        |
 |`RCTL(kc)`|                               |Hold Right Control and press `kc`                   |
 |`RSFT(kc)`|                               |Hold Right Shift and press `kc`                     |
-|`RALT(kc)`|`ALGR(kc)`                     |Hold Right Alt and press `kc`                       |
+|`RALT(kc)`|`ROPT(kc)`, `ALGR(kc)`         |Hold Right Alt and press `kc`                       |
 |`RGUI(kc)`|`RCMD(kc)`, `LWIN(kc)`         |Hold Right GUI and press `kc`                       |
 |`SGUI(kc)`|`SCMD(kc)`, `SWIN(kc)`         |Hold Left Shift and GUI and press `kc`              |
 |`LCA(kc)` |                               |Hold Left Control and Alt and press `kc`            |
@@ -18,7 +18,7 @@ These allow you to combine a modifier with a keycode. When pressed, the keydown
 |`MEH(kc)` |                               |Hold Left Control, Shift and Alt and press `kc`     |
 |`HYPR(kc)`|                               |Hold Left Control, Shift, Alt and GUI and press `kc`|
 
-You can also chain them, for example `LCTL(LALT(KC_DEL))` makes a key that sends Control+Alt+Delete with a single keypress.
+You can also chain them, for example `LCTL(LALT(KC_DEL))` or `C(A(KC_DEL))` makes a key that sends Control+Alt+Delete with a single keypress.
 
 # Legacy Content :id=legacy-content
 
diff --git a/docs/feature_macros.md b/docs/feature_macros.md
index 1bd2d74e7..1c7705a51 100644
--- a/docs/feature_macros.md
+++ b/docs/feature_macros.md
@@ -161,11 +161,11 @@ There's also a couple of mod shortcuts you can use:
 
 * `SS_LCTL(string)`
 * `SS_LSFT(string)`
-* `SS_LALT(string)`
+* `SS_LALT(string)` or `SS_LOPT(string)`
 * `SS_LGUI(string)`, `SS_LCMD(string)` or `SS_LWIN(string)`
 * `SS_RCTL(string)`
 * `SS_RSFT(string)`
-* `SS_RALT(string)` or `SS_ALGR(string)`
+* `SS_RALT(string)`, `SS_ROPT(string)` or `SS_ALGR(string)`
 * `SS_RGUI(string)`, `SS_RCMD(string)` or `SS_RWIN(string)`
 
 These press the respective modifier, send the supplied string and then release the modifier.
diff --git a/docs/ja/feature_advanced_keycodes.md b/docs/ja/feature_advanced_keycodes.md
index d208d7f92..c6e21feb9 100644
--- a/docs/ja/feature_advanced_keycodes.md
+++ b/docs/ja/feature_advanced_keycodes.md
@@ -54,11 +54,11 @@ QMK を使い始めたばかりの場合は、全てを単純にしたいでし�
 |----------|-------------------------------|----------------------------------------------------|
 | `LCTL(kc)` | `C(kc)` | 左 Control を押しながら `kc` を押します。 |
 | `LSFT(kc)` | `S(kc)` | 左 Shift を押しながら `kc` を押します。 |
-| `LALT(kc)` | `A(kc)` | 左 Alt を押しながら `kc`を押します。 |
+| `LALT(kc)` | `A(kc)`, `LOPT(kc)` | 左 Alt を押しながら `kc`を押します。 |
 | `LGUI(kc)` | `G(kc)`, `LCMD(kc)`, `LWIN(kc)` | 左 GUI を押しながら `kc` を押します。 |
 | `RCTL(kc)` |  | 右 Control を押しながら `kc` を押します。 |
 | `RSFT(kc)` |  | 右 Shift を押しながら `kc` を押します。 |
-| `RALT(kc)` | `ALGR(kc)` | 右 Alt を押しながら `kc` を押します。 |
+| `RALT(kc)` | `ROPT(kc)`, `ALGR(kc)` | 右 Alt を押しながら `kc` を押します。 |
 | `RGUI(kc)` | `RCMD(kc)`, `LWIN(kc)` | 右 GUI を押しながら `kc` を押します。 |
 | `SGUI(kc)` | `SCMD(kc)`, `SWIN(kc)` | 左 Shift と左 GUI を押しながら `kc` を押します。 |
 | `LCA(kc)` |  | 左 Control と左 Alt を押しながら `kc` を押します。 |
diff --git a/docs/keycodes.md b/docs/keycodes.md
index 1a388f106..18fd81118 100644
--- a/docs/keycodes.md
+++ b/docs/keycodes.md
@@ -175,11 +175,11 @@ See also: [Basic Keycodes](keycodes_basic.md)
 |`KC_EXSEL`             |                              |ExSel                                          |
 |`KC_LCTRL`             |`KC_LCTL`                     |Left Control                                   |
 |`KC_LSHIFT`            |`KC_LSFT`                     |Left Shift                                     |
-|`KC_LALT`              |                              |Left Alt                                       |
+|`KC_LALT`              |`KC_LOPT`                     |Left Alt (Option)                              |
 |`KC_LGUI`              |`KC_LCMD`, `KC_LWIN`          |Left GUI (Windows/Command/Meta key)            |
 |`KC_RCTRL`             |`KC_RCTL`                     |Right Control                                  |
 |`KC_RSHIFT`            |`KC_RSFT`                     |Right Shift                                    |
-|`KC_RALT`              |`KC_ALGR`                     |Right Alt (AltGr)                              |
+|`KC_RALT`              |`KC_ROPT`, `KC_ALGR`          |Right Alt (Option/AltGr)                       |
 |`KC_RGUI`              |`KC_RCMD`, `KC_RWIN`          |Right GUI (Windows/Command/Meta key)           |
 |`KC_SYSTEM_POWER`      |`KC_PWR`                      |System Power Down                              |
 |`KC_SYSTEM_SLEEP`      |`KC_SLEP`                     |System Sleep                                   |
@@ -378,11 +378,11 @@ See also: [Modifier Keys](feature_advanced_keycodes.md#modifier-keys)
 |----------|-------------------------------|----------------------------------------------------|
 |`LCTL(kc)`|`C(kc)`                        |Hold Left Control and press `kc`                    |
 |`LSFT(kc)`|`S(kc)`                        |Hold Left Shift and press `kc`                      |
-|`LALT(kc)`|`A(kc)`                        |Hold Left Alt and press `kc`                        |
+|`LALT(kc)`|`A(kc)`, `LOPT(kc)`            |Hold Left Alt and press `kc`                        |
 |`LGUI(kc)`|`G(kc)`, `LCMD(kc)`, `LWIN(kc)`|Hold Left GUI and press `kc`                        |
 |`RCTL(kc)`|                               |Hold Right Control and press `kc`                   |
 |`RSFT(kc)`|                               |Hold Right Shift and press `kc`                     |
-|`RALT(kc)`|`ALGR(kc)`                     |Hold Right Alt and press `kc`                       |
+|`RALT(kc)`|`ROPT(kc)`, `ALGR(kc)`         |Hold Right Alt and press `kc`                       |
 |`RGUI(kc)`|`RCMD(kc)`, `LWIN(kc)`         |Hold Right GUI and press `kc`                       |
 |`SGUI(kc)`|`SCMD(kc)`, `SWIN(kc)`         |Hold Left Shift and GUI and press `kc`              |
 |`LCA(kc)` |                               |Hold Left Control and Alt and press `kc`            |
@@ -401,11 +401,11 @@ See also: [Mod-Tap](mod_tap.md)
 |`MT(mod, kc)`|                                                                 |`mod` when held, `kc` when tapped                      |
 |`LCTL_T(kc)` |`CTL_T(kc)`                                                      |Left Control when held, `kc` when tapped               |
 |`LSFT_T(kc)` |`SFT_T(kc)`                                                      |Left Shift when held, `kc` when tapped                 |
-|`LALT_T(kc)` |`ALT_T(kc)`                                                      |Left Alt when held, `kc` when tapped                   |
+|`LALT_T(kc)` |`LOPT_T(kc)`, `ALT_T(kc)`, `OPT_T(kc)`                           |Left Alt when held, `kc` when tapped                   |
 |`LGUI_T(kc)` |`LCMD_T(kc)`, `LWIN_T(kc)`, `GUI_T(kc)`, `CMD_T(kc)`, `WIN_T(kc)`|Left GUI when held, `kc` when tapped                   |
 |`RCTL_T(kc)` |                                                                 |Right Control when held, `kc` when tapped              |
 |`RSFT_T(kc)` |                                                                 |Right Shift when held, `kc` when tapped                |
-|`RALT_T(kc)` |`ALGR_T(kc)`                                                     |Right Alt when held, `kc` when tapped                  |
+|`RALT_T(kc)` |`ROPT_T(kc)`, `ALGR_T(kc)`                                       |Right Alt when held, `kc` when tapped                  |
 |`RGUI_T(kc)` |`RCMD_T(kc)`, `RWIN_T(kc)`                                       |Right GUI when held, `kc` when tapped                  |
 |`SGUI_T(kc)` |`SCMD_T(kc)`, `SWIN_T(kc)`                                       |Left Shift and GUI when held, `kc` when tapped         |
 |`LCA_T(kc)`  |                                                                 |Left Control and Alt when held, `kc` when tapped       |
diff --git a/docs/keycodes_basic.md b/docs/keycodes_basic.md
index 75d58c1f1..09efc8c9c 100644
--- a/docs/keycodes_basic.md
+++ b/docs/keycodes_basic.md
@@ -112,11 +112,11 @@ The basic set of keycodes are based on the [HID Keyboard/Keypad Usage Page (0x07
 |-----------|--------------------|------------------------------------|
 |`KC_LCTRL` |`KC_LCTL`           |Left Control                        |
 |`KC_LSHIFT`|`KC_LSFT`           |Left Shift                          |
-|`KC_LALT`  |                    |Left Alt                            |
+|`KC_LALT`  |`KC_LOPT`           |Left Alt (Option)                   |
 |`KC_LGUI`  |`KC_LCMD`, `KC_LWIN`|Left GUI (Windows/Command/Meta key) |
 |`KC_RCTRL` |`KC_RCTL`           |Right Control                       |
 |`KC_RSHIFT`|`KC_RSFT`           |Right Shift                         |
-|`KC_RALT`  |`KC_ALGR`           |Right Alt (AltGr)                   |
+|`KC_RALT`  |`KC_ROPT`, `KC_ALGR`|Right Alt (Option/AltGr)            |
 |`KC_RGUI`  |`KC_RCMD`, `KC_RWIN`|Right GUI (Windows/Command/Meta key)|
 
 ## International
diff --git a/docs/mod_tap.md b/docs/mod_tap.md
index 2b86701ca..ced0beba9 100644
--- a/docs/mod_tap.md
+++ b/docs/mod_tap.md
@@ -31,11 +31,11 @@ For convenience, QMK includes some Mod-Tap shortcuts to make common combinations
 |------------|-----------------------------------------------------------------|-------------------------------------------------------|
 |`LCTL_T(kc)`|`CTL_T(kc)`                                                      |Left Control when held, `kc` when tapped               |
 |`LSFT_T(kc)`|`SFT_T(kc)`                                                      |Left Shift when held, `kc` when tapped                 |
-|`LALT_T(kc)`|`ALT_T(kc)`                                                      |Left Alt when held, `kc` when tapped                   |
+|`LALT_T(kc)`|`LOPT_T(kc)`, `ALT_T(kc)`, `OPT_T(kc)`                           |Left Alt when held, `kc` when tapped                   |
 |`LGUI_T(kc)`|`LCMD_T(kc)`, `LWIN_T(kc)`, `GUI_T(kc)`, `CMD_T(kc)`, `WIN_T(kc)`|Left GUI when held, `kc` when tapped                   |
 |`RCTL_T(kc)`|                                                                 |Right Control when held, `kc` when tapped              |
 |`RSFT_T(kc)`|                                                                 |Right Shift when held, `kc` when tapped                |
-|`RALT_T(kc)`|`ALGR_T(kc)`                                                     |Right Alt when held, `kc` when tapped                  |
+|`RALT_T(kc)`|`ROPT_T(kc)`, `ALGR_T(kc)`                                       |Right Alt when held, `kc` when tapped                  |
 |`RGUI_T(kc)`|`RCMD_T(kc)`, `RWIN_T(kc)`                                       |Right GUI when held, `kc` when tapped                  |
 |`SGUI_T(kc)`|`SCMD_T(kc)`, `SWIN_T(kc)`                                       |Left Shift and GUI when held, `kc` when tapped         |
 |`LCA_T(kc)` |                                                                 |Left Control and Alt when held, `kc` when tapped       |
diff --git a/quantum/quantum_keycodes.h b/quantum/quantum_keycodes.h
index f6aac2234..0958c4f4e 100644
--- a/quantum/quantum_keycodes.h
+++ b/quantum/quantum_keycodes.h
@@ -521,13 +521,15 @@ enum quantum_keycodes {
 #define LSFT(kc) (QK_LSFT | (kc))
 #define LALT(kc) (QK_LALT | (kc))
 #define LGUI(kc) (QK_LGUI | (kc))
+#define LOPT(kc) LALT(kc)
 #define LCMD(kc) LGUI(kc)
 #define LWIN(kc) LGUI(kc)
 #define RCTL(kc) (QK_RCTL | (kc))
 #define RSFT(kc) (QK_RSFT | (kc))
 #define RALT(kc) (QK_RALT | (kc))
-#define ALGR(kc) RALT(kc)
 #define RGUI(kc) (QK_RGUI | (kc))
+#define ALGR(kc) RALT(kc)
+#define ROPT(kc) RALT(kc)
 #define RCMD(kc) RGUI(kc)
 #define RWIN(kc) RGUI(kc)
 
@@ -736,8 +738,11 @@ enum quantum_keycodes {
 
 #define LALT_T(kc) MT(MOD_LALT, kc)
 #define RALT_T(kc) MT(MOD_RALT, kc)
-#define ALT_T(kc) LALT_T(kc)
+#define LOPT_T(kc) LALT_T(kc)
+#define ROPT_T(kc) RALT_T(kc)
 #define ALGR_T(kc) RALT_T(kc)
+#define ALT_T(kc) LALT_T(kc)
+#define OPT_T(kc) LOPT_T(kc)
 
 #define LGUI_T(kc) MT(MOD_LGUI, kc)
 #define RGUI_T(kc) MT(MOD_RGUI, kc)
diff --git a/quantum/send_string_keycodes.h b/quantum/send_string_keycodes.h
index 86dc8bf00..1e8a8e9ff 100644
--- a/quantum/send_string_keycodes.h
+++ b/quantum/send_string_keycodes.h
@@ -96,11 +96,13 @@
 /* Modifiers */
 #define X_LCTL X_LCTRL
 #define X_LSFT X_LSHIFT
+#define X_LOPT X_LALT
 #define X_LCMD X_LGUI
 #define X_LWIN X_LGUI
 #define X_RCTL X_RCTRL
 #define X_RSFT X_RSHIFT
 #define X_ALGR X_RALT
+#define X_ROPT X_RALT
 #define X_RCMD X_RGUI
 #define X_RWIN X_RGUI
 
diff --git a/tmk_core/common/keycode.h b/tmk_core/common/keycode.h
index e1059fadf..5c8ba8fe6 100644
--- a/tmk_core/common/keycode.h
+++ b/tmk_core/common/keycode.h
@@ -152,11 +152,13 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Modifiers */
 #define KC_LCTL KC_LCTRL
 #define KC_LSFT KC_LSHIFT
+#define KC_LOPT KC_LALT
 #define KC_LCMD KC_LGUI
 #define KC_LWIN KC_LGUI
 #define KC_RCTL KC_RCTRL
 #define KC_RSFT KC_RSHIFT
 #define KC_ALGR KC_RALT
+#define KC_ROPT KC_RALT
 #define KC_RCMD KC_RGUI
 #define KC_RWIN KC_RGUI