1 files changed, 81 insertions, 0 deletions
diff --git a/keyboards/keebio/iris/keymaps/khang/extrakeys.h b/keyboards/keebio/iris/keymaps/khang/extrakeys.h
new file mode 100644
index 0000000000..a9056f8bcf
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+++ b/keyboards/keebio/iris/keymaps/khang/extrakeys.h
@@ -0,0 +1,81 @@
+/* Copyright 2021 Nguyen Vu Khang <brew4k@gmail.com>
+  * 
+  * This program is free software: you can redistribute it and/or modify 
+  * it under the terms of the GNU General Public License as published by 
+  * the Free Software Foundation, either version 2 of the License, or 
+  * (at your option) any later version. 
+  * 
+  * This program is distributed in the hope that it will be useful, 
+  * but WITHOUT ANY WARRANTY; without even the implied warranty of 
+  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+  * GNU General Public License for more details. 
+  * 
+  * You should have received a copy of the GNU General Public License 
+  * along with this program.  If not, see <http://www.gnu.org/licenses/>. 
+  */ 
+
+#pragma once
+
+enum my_keycodes {
+    ______ = SAFE_RANGE,
+    HYPR1, HYPR2, HYPR3, HYPR4, HYPR5, HYPR6, HYPR7, HYPR8, HYPR9, HYPR0,
+    HYPRL,
+    HYPRM,
+    HYPRP,
+    HYPRQ,
+    HYPRS,
+    HYPRT,
+    KC_STAB
+};
+
+#undef _______
+#define ______ KC_NO
+
+#define HYPR1 HYPR(KC_1)
+#define HYPR2 HYPR(KC_2)
+#define HYPR3 HYPR(KC_3)
+#define HYPR4 HYPR(KC_4)
+#define HYPR5 HYPR(KC_5)
+#define HYPR6 HYPR(KC_6)
+#define HYPR7 HYPR(KC_7)
+#define HYPR8 HYPR(KC_8)
+#define HYPR9 HYPR(KC_9)
+#define HYPR0 HYPR(KC_0)
+
+#define HYPRL HYPR(KC_L)
+#define HYPRM HYPR(KC_M)
+#define HYPRP HYPR(KC_P)
+#define HYPRQ HYPR(KC_Q)
+#define HYPRS HYPR(KC_S)
+#define HYPRT HYPR(KC_T)
+
+#define KC_STAB LSFT(KC_TAB)
+
+uint8_t mod_state;
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+    mod_state = get_mods();
+    switch (keycode) {
+        case KC_BSPC: {
+            static bool delkey_registered;
+            if (record->event.pressed) { // on key-down of Backspace
+                if (mod_state & MOD_MASK_CTRL) {
+                    // Ctrl + Backspace -> Forward Delete
+                    del_mods(MOD_MASK_CTRL);
+                    register_code(KC_DEL);
+                    delkey_registered = true;
+                    set_mods(mod_state);
+                    return false;
+                }
+            } else { // on release of Backspace
+                if (delkey_registered) {
+                    unregister_code(KC_DEL);
+                    delkey_registered = false;
+                    return false;
+                }
+            }
+            return true;
+        };
+        break;
+    }
+    return true;
+};