From 2b6521f5d23da404a597d675d12d4c0cf89657de Mon Sep 17 00:00:00 2001
From: Christoph Lohmann <20h@r-36.net>
Date: Thu, 15 Nov 2012 20:19:35 +0100
Subject: [PATCH] Optimizing the key lookup to the X11 function key. It is
 still possible to

remap other keys.
---
 config.def.h |  6 ++++++
 st.c         | 14 ++++++++++++++
 2 files changed, 20 insertions(+)

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;