#define assert_window(dpy, w) \
Assert (w == RootWindow (dpy, 0), "not a window")
+
+void
+Log (const char *fmt, ...)
+{
+ va_list args;
+ va_start (args, fmt);
+ Logv (fmt, args);
+ va_end (args);
+}
+
+
int
XDisplayWidth (Display *dpy, int screen)
{