From f59510aea8404ef922c6ff11f23cb623a243d61b Mon Sep 17 00:00:00 2001
From: Kai Ryu <kai1103@gmail.com>
Date: Tue, 18 Nov 2014 18:36:29 +0900
Subject: [PATCH] Implement a tricky esc function for GH60

---
 keyboard/gh60/keymap_common.h |  1 +
 keyboard/gh60/keymap_poker2.c | 28 ++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/keyboard/gh60/keymap_common.h b/keyboard/gh60/keymap_common.h
index 5f808023..12ebae16 100644
--- a/keyboard/gh60/keymap_common.h
+++ b/keyboard/gh60/keymap_common.h
@@ -22,6 +22,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <avr/pgmspace.h>
 #include "keycode.h"
 #include "action.h"
+#include "action_util.h"
 #include "action_macro.h"
 #include "report.h"
 #include "host.h"
diff --git a/keyboard/gh60/keymap_poker2.c b/keyboard/gh60/keymap_poker2.c
index f6e560d1..3d22553d 100644
--- a/keyboard/gh60/keymap_poker2.c
+++ b/keyboard/gh60/keymap_poker2.c
@@ -70,3 +70,31 @@ uint16_t fn_actions_count(void) {
     return sizeof(fn_actions) / sizeof(fn_actions[0]);
 }
 #endif
+
+enum {
+    TRICKY_ESC = 0,
+};
+
+#define MODS_SHIFT_MASK (MOD_BIT(KC_LSHIFT)|MOD_BIT(KC_RSHIFT))
+void action_function(keyrecord_t *record, uint8_t id, uint8_t opt)
+{
+    static uint8_t tricky_esc_registered;
+    switch (id) {
+        case TRICKY_ESC:
+            if (record->event.pressed) {
+                if (get_mods() & MODS_SHIFT_MASK) {
+                    tricky_esc_registered = KC_GRV;
+                }
+                else {
+                    tricky_esc_registered = KC_ESC;
+                }
+                register_code(tricky_esc_registered);
+                send_keyboard_report();
+            }
+            else {
+                unregister_code(tricky_esc_registered);
+                send_keyboard_report();
+            }
+            break;
+    }
+}