1 files changed, 39 insertions, 0 deletions
diff --git a/users/ericgebhart/extensions/mod_lock.h b/users/ericgebhart/extensions/mod_lock.h
new file mode 100644
index 0000000000..d9e6106c4e
--- /dev/null
+++ b/users/ericgebhart/extensions/mod_lock.h
@@ -0,0 +1,39 @@
+#pragma once
+/*
+  Copyright 2018-2022 Eric Gebhart <e.a.gebhart@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/>.
+*/
+
+#include USERSPACE_H
+
+typedef struct {
+    bool          locking;
+    uint16_t      mod;
+    uint16_t      trigger;
+} mod_lock_state_t;
+
+extern mod_lock_state_t mod_lock_states[];
+extern uint8_t          NUM_MODLOCK_STATES;
+
+// Custom mod-locking functionality that registers the mod and
+// keeps it registered until the trigger key is tapped again
+// or until a specified cancel key is tapped.
+void process_mod_lock(uint16_t keycode, keyrecord_t *record);
+
+bool is_mod_lock_cancel_key(uint16_t keycode);
+
+#undef IGNORE_KC
+#define IGNORE_KC(KC)                           \
+  case KC: