Escape-OneShot: Change the key mapping instead of masking

We want to remove the use of key masking, so instead of masking the key when
escaping a OneShot, map it to `NoKey` instead, and continue doing so until
released. Which is effectively what masking did, but localized and simpler.

Doing this will make our cache have `NoKey` for the key until release, and we'll
avoid sending unintended Escape keycodes, without having to use the global
masking functions.

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

src/kaleidoscope/plugin/Escape-OneShot.cpp

@@ -23,18 +23,20 @@
 namespace kaleidoscope {
 namespace plugin {
 
+bool EscapeOneShot::did_escape_;
+
 EventHandlerResult EscapeOneShot::onKeyswitchEvent(Key &mapped_key, KeyAddr key_addr, uint8_t keyState) {
-  if (mapped_key != Key_Escape ||
-      (keyState & INJECTED) ||
-      !keyToggledOn(keyState))
+  if (mapped_key != Key_Escape || (keyState & INJECTED))
     return EventHandlerResult::OK;
 
+  if (did_escape_)
+    mapped_key = Key_NoKey;
+  did_escape_ = !keyToggledOff(keyState);
+
   if ((!::OneShot.isActive() || ::OneShot.isPressed()) && !::OneShot.isSticky()) {
     return EventHandlerResult::OK;
   }
 
-  Runtime.device().maskKey(key_addr);
-
   ::OneShot.cancel(true);
   return EventHandlerResult::EVENT_CONSUMED;
 }

src/kaleidoscope/plugin/Escape-OneShot.h

@@ -26,6 +26,9 @@ class EscapeOneShot : public kaleidoscope::Plugin {
   EscapeOneShot(void) {}
 
   EventHandlerResult onKeyswitchEvent(Key &mapped_key, KeyAddr key_addr, uint8_t keyState);
+
+ private:
+  static bool did_escape_;
 };
 }
 }