1 files changed, 99 insertions, 0 deletions
diff --git a/users/ericgebhart/extensions/alt_shift.c b/users/ericgebhart/extensions/alt_shift.c
new file mode 100644
index 0000000000..002adec230
--- /dev/null
+++ b/users/ericgebhart/extensions/alt_shift.c
@@ -0,0 +1,99 @@
+#include USERSPACE_H
+#include <stdbool.h>
+#include <stdint.h>
+
+bool shift_for_two(uint16_t keycode, keyrecord_t *record){
+  uint16_t mod_state = get_mods();
+
+  bool is_shifted = (get_mods() & MOD_MASK_SHIFT) ||
+    (get_oneshot_mods() & MOD_MASK_SHIFT);
+
+  if(record ->event.pressed) {
+    // If shifted, double these common punctuation marks.
+    if(is_shifted){
+      // clear shift temporarily
+      del_mods(MOD_MASK_SHIFT);
+      del_oneshot_mods(MOD_MASK_SHIFT);
+
+      tap_code16(keycode);
+      tap_code16(keycode);
+
+      // restore previous shift state
+      set_mods(mod_state);
+      return false;
+    }
+  }
+  return true;
+}
+
+bool shift_for_three(uint16_t keycode, keyrecord_t *record){
+  uint16_t mod_state = get_mods();
+
+  bool is_shifted = (get_mods() & MOD_MASK_SHIFT) ||
+    (get_oneshot_mods() & MOD_MASK_SHIFT);
+
+  if(record ->event.pressed) {
+    // If shifted, double these common punctuation marks.
+    if(is_shifted){
+      // clear shift temporarily
+      del_mods(MOD_MASK_SHIFT);
+      del_oneshot_mods(MOD_MASK_SHIFT);
+
+      tap_code16(keycode);
+      tap_code16(keycode);
+      tap_code16(keycode);
+
+      // restore previous shift state
+      set_mods(mod_state);
+      return false;
+    }
+  }
+  return true;
+  }
+
+bool override_shift(uint16_t keycode,
+                    uint16_t shift_keycode,
+                    keyrecord_t *record
+                    ) {
+
+  bool is_shifted = (get_mods() & MOD_MASK_SHIFT) ||
+    (get_oneshot_mods() & MOD_MASK_SHIFT);
+
+  if (record->event.pressed) {
+    if (is_shifted) {
+      uint8_t mod_state = get_mods();
+      del_mods(MOD_MASK_SHIFT);
+      del_oneshot_mods(MOD_MASK_SHIFT);
+
+      tap_code16(shift_keycode);
+
+      set_mods(mod_state);
+    } else {
+      //tap_code16(keycode);
+    }
+  }
+  return false;
+}
+
+// macros for use in alt_shift.defs.
+#define ALT_SHIFT(KCKEY, KC01)            \
+  case KCKEY:                                   \
+  return override_shift(KCKEY, KC01, record);   \
+  break;
+
+#define SHIFT_FOR_2(KCKEY)                      \
+  case KCKEY:                                   \
+  return shift_for_two(KCKEY, record);          \
+  break;
+
+#define SHIFT_FOR_3(KCKEY)                \
+  case KCKEY:                                   \
+  return shift_for_three(KCKEY, record);        \
+  break;
+
+bool process_alt_shift_user(uint16_t keycode, keyrecord_t *record) {
+  switch(keycode){
+#include "alt_shift.def"
+  }
+  return true;
+}