now user can set custom key bindings in config.h

config.h

@@ -32,3 +32,28 @@ static struct Config config = {
 	/* area around the icon, the triangle and the separator */
 	.horzpadding = 8,
 };
+
+/*
+ * KEYBINDINGS
+ *
+ * Look at your /usr/include/X11/keysymdef.h  (or the equivalent file
+ * in your system) for a list of key symbol constants, and change the
+ * macros below accordingly.  Note there IS NO equal sign (=) between
+ * the macros and their values.   All key symbol constants begin with
+ * the prefix XK_
+ *
+ * For example, to use vim-like key bindings, set KEYSYMLEFT to XK_h,
+ * KEYSYMDOWN to XK_j, KEYSYMUP to XK_k, etc.
+ *
+ * Note that the regular keys like ArrowUp, ArrowDown, Tab, Home, etc
+ * will ALWAYS work, so you do not need to set them.
+ *
+ * If you do not want to set a key binding, keep it with the value of
+ * XK_VoidSymbol
+ */
+#define KSYMFIRST   XK_VoidSymbol       /* select first item */
+#define KSYMLAST    XK_VoidSymbol       /* select last item */
+#define KSYMUP      XK_VoidSymbol       /* select previous item */
+#define KSYMDOWN    XK_VoidSymbol       /* select next item */
+#define KSYMLEFT    XK_VoidSymbol       /* close current menu */
+#define KSYMRIGHT   XK_VoidSymbol       /* enter selected item */

xmenu.c

@@ -1272,19 +1272,19 @@ selectitem:
 
 			/* cycle through menu */
 			item = NULL;
-			if (ksym == XK_Home) {
+			if (ksym == XK_Home || ksym == KSYMFIRST) {
 				item = itemcycle(currmenu, ITEMFIRST);
-			} else if (ksym == XK_End) {
+			} else if (ksym == XK_End || ksym == KSYMLAST) {
 				item = itemcycle(currmenu, ITEMLAST);
-			} else if (ksym == XK_ISO_Left_Tab || ksym == XK_Up) {
+			} else if (ksym == XK_ISO_Left_Tab || ksym == XK_Up || ksym == KSYMUP) {
 				item = itemcycle(currmenu, ITEMPREV);
-			} else if (ksym == XK_Tab || ksym == XK_Down) {
+			} else if (ksym == XK_Tab || ksym == XK_Down || ksym == KSYMDOWN) {
 				item = itemcycle(currmenu, ITEMNEXT);
-			} else if ((ksym == XK_Return || ksym == XK_Right) &&
+			} else if ((ksym == XK_Return || ksym == XK_Right || ksym == KSYMRIGHT) &&
 			           currmenu->selected != NULL) {
 				item = currmenu->selected;
 				goto selectitem;
-			} else if ((ksym == XK_Escape || ksym == XK_Left) &&
+			} else if ((ksym == XK_Escape || ksym == XK_Left || ksym == KSYMLEFT) &&
 			           currmenu->parent != NULL) {
 				item = currmenu->parent->selected;
 				currmenu = currmenu->parent;