From 9d7979931e0037fc5ddc77a2cb895eb055501f34 Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Tue, 19 Oct 2010 01:03:27 +0900
Subject: [PATCH] FIX: clear keyboard_keys. NOT change layer when one more Fn
 keys pressed/other than Fn key pressed

---
 hhkb/keymap.c | 13 +++++++++----
 key_process.c |  2 +-
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/hhkb/keymap.c b/hhkb/keymap.c
index d7e6bbe3..572f530b 100644
--- a/hhkb/keymap.c
+++ b/hhkb/keymap.c
@@ -152,12 +152,17 @@ int get_layer(void) {
         for (int col = 0; col < MATRIX_ROWS; col++) {
             if (matrix[row] & 1<<col) continue; // NOT pressed
             uint8_t code = get_keycode(0, row, col);
-            if      (code == FN_1) layer = 1;
-            else if (code == FN_2) layer = 2;
-            else if (code == FN_3) layer = 3;
-            else if (code == FN_4) layer = 4;
+
+            // NOT change current_layer when one more Fn keys pressed
+            //                          when other than Fn key pressed
+            if      (code == FN_1) layer = layer ? current_layer : 1;
+            else if (code == FN_2) layer = layer ? current_layer : 2;
+            else if (code == FN_3) layer = layer ? current_layer : 3;
+            else if (code == FN_4) layer = layer ? current_layer : 4;
             else if (KB_LCTRL <= code && code <= KB_RGUI)
                 modifiers |= 1<<(code & 0x07);
+            else // other_key_pressed
+                layer = current_layer;
         }
     }
 
diff --git a/key_process.c b/key_process.c
index 0bce9188..4a9e81b7 100644
--- a/key_process.c
+++ b/key_process.c
@@ -58,7 +58,7 @@ void proc_matrix(void) {
         }
 
         keyboard_modifier_keys = 0;
-        for (int i = 0; i < 3; i++) keyboard_keys[i] = KB_NO;
+        for (int i = 0; i < 6; i++) keyboard_keys[i] = KB_NO;
         key_index = 0;
         mouse_btn = 0;
         mouse_x = 0;