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@span .diff-meta {-diff --git a/board/hx20/keyboard_customization.c b/board/hx20/keyboard_customization.c}
@span .diff-meta {-index 9a5050a0f..2756f17ce 100644}
@span .diff-meta {---- a/board/hx20/keyboard_customization.c}
@span .diff-meta {-+++ b/board/hx20/keyboard_customization.c}
@span .diff-loc {-\@\@ -22,12 +22,15 \@\@}
 #define CPRINTS(format, args...) cprints(CC_KEYBOARD, format, ## args)
 #define CPRINTF(format, args...) cprintf(CC_KEYBOARD, format, ## args)

@span .diff-ins {-+/* The scancode for the caps-lock key, which is now a hybrid key */}
@span .diff-ins {-+#define SCANCODE_CTRL_ESC 0x0101}
@span .diff-ins {-+}
 uint16_t scancode_set2[KEYBOARD_COLS_MAX][KEYBOARD_ROWS] = {
 		{0x0021, 0x007B, 0x0079, 0x0072, 0x007A, 0x0071, 0x0069, 0xe04A\},
 		{0xe071, 0xe070, 0x007D, 0xe01f, 0x006c, 0xe06c, 0xe07d, 0x0077\},
 		{0x0015, 0x0070, 0x00ff, 0x000D, 0x000E, 0x0016, 0x0067, 0x001c\},
 		{0xe011, 0x0011, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000\},
@span .diff-del {--		{0xe05a, 0x0029, 0x0024, 0x000c, 0x0058, 0x0026, 0x0004, 0xe07a\},}
@span .diff-ins {-+		{0xe05a, 0x0029, 0x0024, 0x000c, 0x0101, 0x0026, 0x0004, 0xe07a\},}
 		{0x0022, 0x001a, 0x0006, 0x0005, 0x001b, 0x001e, 0x001d, 0x0076\},
 		{0x002A, 0x0032, 0x0034, 0x002c, 0x002e, 0x0025, 0x002d, 0x002b\},
 		{0x003a, 0x0031, 0x0033, 0x0035, 0x0036, 0x003d, 0x003c, 0x003b\},
@span .diff-loc {-\@\@ -497,6 +500,55 \@\@ int functional_hotkey(uint16_t *key_code, int8_t pressed)}
 	return EC_SUCCESS;
 \}

@span .diff-ins {-+int try_ctrl_esc(uint16_t *key_code, int8_t pressed) {}
@span .diff-ins {-+	static enum {}
@span .diff-ins {-+		NONE,}
@span .diff-ins {-+		HELD,}
@span .diff-ins {-+		CTRL}
@span .diff-ins {-+	\} ctrl_esc_state;}
@span .diff-ins {-+}
@span .diff-ins {-+	if (*key_code == SCANCODE_CTRL_ESC) {}
@span .diff-ins {-+		/* If we pressed the caps key, enter the HELD state.  Otherwise,}
@span .diff-ins {-+		 * we are either releasing from the HELD state or the CTRL}
@span .diff-ins {-+		 * state.  In both cases we should reset the state to NONE, but}
@span .diff-ins {-+		 * when releasing from the HELD state we want to send an ESC and}
@span .diff-ins {-+		 * when releasing from the CTRL state we want to end the CTRL.}
@span .diff-ins {-+		 *}
@span .diff-ins {-+		 * Also important to note is that even before we know if we’re}
@span .diff-ins {-+		 * going to be acting as ESC or CTRL, we need to send a press-}
@span .diff-ins {-+		 * event of the CTRL key because you can chord CTRL with mouse-}
@span .diff-ins {-+		 * clicks too, not just other keys.}
@span .diff-ins {-+		 */}
@span .diff-ins {-+		if (pressed) {}
@span .diff-ins {-+			ctrl_esc_state = HELD;}
@span .diff-ins {-+			simulate_keyboard(SCANCODE_LEFT_CTRL, 1);}
@span .diff-ins {-+		\} else if (ctrl_esc_state == HELD) {}
@span .diff-ins {-+			ctrl_esc_state = NONE;}
@span .diff-ins {-+			simulate_keyboard(SCANCODE_LEFT_CTRL, 0);}
@span .diff-ins {-+			simulate_keyboard(SCANCODE_ESC, 1);}
@span .diff-ins {-+			simulate_keyboard(SCANCODE_ESC, 0);}
@span .diff-ins {-+		\} else if (ctrl_esc_state == CTRL) {}
@span .diff-ins {-+			ctrl_esc_state = NONE;}
@span .diff-ins {-+			simulate_keyboard(SCANCODE_LEFT_CTRL, 0);}
@span .diff-ins {-+		\}}
@span .diff-ins {-+}
@span .diff-ins {-+		return EC_ERROR_UNIMPLEMENTED;}
@span .diff-ins {-+	\}}
@span .diff-ins {-+}
@span .diff-ins {-+	/* If we get here then we are dealing with a key that isn’t the caps}
@span .diff-ins {-+	 * key.  In that case we need to handle all 3 states.  If the state is}
@span .diff-ins {-+	 * NONE then we can just exit from this function.  If it’s HELD and we}
@span .diff-ins {-+	 * are pressing a key, then that’s a key-chord and we need to start a}
@span .diff-ins {-+	 * CTRL.  Finally, if we are in the CTRL state, there is nothing to do.}
@span .diff-ins {-+	 */}
@span .diff-ins {-+	if (ctrl_esc_state == HELD && pressed) {}
@span .diff-ins {-+		ctrl_esc_state = CTRL;}
@span .diff-ins {-+		simulate_keyboard(SCANCODE_LEFT_CTRL, 1);}
@span .diff-ins {-+	\}}
@span .diff-ins {-+}
@span .diff-ins {-+	return EC_SUCCESS;}
@span .diff-ins {-+\}}
@span .diff-ins {-+}
 enum ec_error_list keyboard_scancode_callback(uint16_t *make_code,
 					      int8_t pressed)
 {
@span .diff-loc {-\@\@ -521,6 +573,10 \@\@ enum ec_error_list keyboard_scancode_callback(uint16_t *make_code,}
 	if (!pos_get_state())
 		return EC_SUCCESS;

@span .diff-ins {-+	r = try_ctrl_esc(make_code, pressed);}
@span .diff-ins {-+	if (r != EC_SUCCESS)}
@span .diff-ins {-+		return r;}
@span .diff-ins {-+}
 	r = hotkey_F1_F12(make_code, Fn_key, pressed);
 	if (r != EC_SUCCESS)
 		return r;