--- rxvt-unicode/src/feature.h	2006/01/31 20:07:18	1.46
+++ rxvt-unicode/src/feature.h	2007/11/19 09:34:46	1.55
@@ -24,13 +24,13 @@
 #define FEATURE_H
 
 #ifndef X11USRLIBDIR
-# define X11USRLIBDIR		"/usr/X11R6/lib"
+# define X11USRLIBDIR		"/usr/lib"
 #endif
 #ifndef X11LIBDIR
 # define X11LIBDIR		X11USRLIBDIR "/X11"
 #endif
 #ifndef XAPPLOADDIR
-# define XAPPLOADDIR		X11LIBDIR "/app-defaults" 
+# define XAPPLOADDIR		X11LIBDIR "/app-defaults"
 # define XAPPLOADDIRLOCALE	X11LIBDIR "/%s/app-defaults"
 #endif
 
@@ -61,6 +61,13 @@
  */
 
 /*
+ * Forcefully disable double-buffering for xft. On some card/driver combination
+ * enabling it slightly decreases performance, on most it greatly helps it.
+ * The slowdown is small, so it should normally be enabled.
+ */
+/* #define FORCE_UNBUFFERED_XFT */
+
+/*
  * The cursor blink interval, in seconds.
  */
 #define CURSOR_BLINK_INTERVAL 0.5
@@ -136,7 +143,7 @@
  * Define to remove support for XCopyArea () support.  XCopyArea () is useful
  * for scrolling on non-local X displays
  */
-#undef NO_SLOW_LINK_SUPPORT
+#define NO_SLOW_LINK_SUPPORT
 
 /*
  * Printer pipe which will be used for emulation of attached vt100 printer
@@ -147,7 +154,7 @@
  * Allow 80/132 mode switching on startup
  */
 /* #define ALLOW_132_MODE */
- 
+
 /*---------------------------------KEYS---------------------------------*/
 
 /*
@@ -185,7 +192,7 @@
 /*
  * Allow scrolling with modifier+Up/Down keys, in addition
  * to modifier+Prior/Next? (modifier is controlled with
- * SCROLL_ON_* defines above.). 
+ * SCROLL_ON_* defines above.).
  * Also for modifier+Home/End keys to move to top/bottom
  */
 /* #define SCROLL_ON_UPDOWN_KEYS */
@@ -380,5 +387,20 @@
  */
 #define VISUAL_BELL_DURATION .020
 
+/*--------------------------------OTHER---------------------------------*/
+
+/*
+ * Enable the linux yield/usleep hack, which can dramatically improve
+ * performance by working around the linux kernel tty ratelimit bug.
+ * Unfortunately, it seems screen is negatively affected by this on some
+ * machines, so it is disabled by default. Use freebsd or any other kernel
+ * that doesn't suffer form this bug and it will be fast either way.
+ *
+ * See command.C for details.
+ */
+#if __linux__
+# define LINUX_YIELD_HACK 0
+#endif
+
 #endif