2 files changed, 20 insertions, 0 deletions

diff --git a/config.def.h b/config.def.h
index 7a7262c..c0519a8 100644
--- a/config.def.h
+++ b/config.def.h
@@ -88,6 +88,12 @@ static Shortcut shortcuts[] = {
  * position for a key.
  */
 
+/*
+ * If you want something else but the function keys of X11 (0xFF00 - 0xFFFF)
+ * mapped below, add them to this array.
+ */
+static KeySym mappedkeys[] = { -1 };
+
 /* key, mask, output, keypad, cursor, crlf */
 static Key key[] = {
         /* keysym             mask         string         keypad cursor crlf */
diff --git a/st.c b/st.c
index 477a8f8..02ef411 100644
--- a/st.c
+++ b/st.c
@@ -2711,6 +2711,20 @@ char*
 kmap(KeySym k, uint state) {
         uint mask;
         Key *kp;
+        int i;
+
+        /* Check for mapped keys out of X11 function keys. */
+        for(i = 0; i < LEN(mappedkeys); i++) {
+                if(mappedkeys[i] == k) {
+                        fprintf(stderr, "mapped function key.\n");
+                        break;
+                }
+        }
+        if(i == LEN(mappedkeys)) {
+                if((k & 0xFFFF) < 0xFF00)
+                        return NULL;
+        }
+        fprintf(stderr, "Function key.\n");
 
         for(kp = key; kp < key + LEN(key); kp++) {
                 mask = kp->mask;