Merge pull request #120 from KMKfw/topic-backspace-delete

Adds delete/backspace key. Resolves #93

docs/keycodes.md

@@ -193,6 +193,7 @@
 |`KC.RESET`             |Put the keyboard into DFU mode for flashing                          |
 |`KC.DEBUG`             |Toggle `debug_enabled`, which enables log spew to serial console     |
 |`KC.GESC`              |Escape when tapped, <code>&#96;</code> when pressed with Shift or GUI|
+|`KC.BKDL`              |Backspace when tapped, Delete when pressed with GUI                  |
 |`KC.LEAD`              |The [Leader key]                                                     |
 |`KC.UC_MODE_NOOP`      |Sets UnicodeMode to NOOP                                             |
 |`KC.UC_MODE_LINUX`     |Sets UnicodeMode to Linux                                            |

kmk/handlers/stock.py

@@ -74,6 +74,29 @@ def gesc_released(key, state, KC, *args, **kwargs):
     return state
 
 
+def bkdl_pressed(key, state, KC, *args, **kwargs):
+    BKDL_TRIGGERS = {KC.LGUI, KC.RGUI}
+
+    if BKDL_TRIGGERS.intersection(state.keys_pressed):
+        state.config._send_hid()
+        state.keys_pressed.add(KC.DEL)
+        state.hid_pending = True
+        return state
+
+    # else return KC_ESC
+    state.keys_pressed.add(KC.BKSP)
+    state.hid_pending = True
+
+    return state
+
+
+def bkdl_released(key, state, KC, *args, **kwargs):
+    state.keys_pressed.discard(KC.BKSP)
+    state.keys_pressed.discard(KC.DEL)
+    state.hid_pending = True
+    return state
+
+
 def sleep_pressed(key, state, KC, *args, **kwargs):
     sleep_ms(key.meta.ms)
     return state

kmk/keys.py

@@ -623,6 +623,7 @@ make_key(names=('BOOTLOADER',), on_press=handlers.bootloader)
 make_key(names=('DEBUG', 'DBG'), on_press=handlers.debug_pressed, on_release=handlers.passthrough)
 
 make_key(names=('GESC',), on_press=handlers.gesc_pressed, on_release=handlers.gesc_released)
+make_key(names=('BKDL',), on_press=handlers.bkdl_pressed, on_release=handlers.bkdl_released)
 make_key(
     names=('LEADER', 'LEAD'),
     on_press=handlers.leader_pressed,