--- rxvt-unicode/src/rxvtutil.h	2007/12/02 22:37:14	1.34
+++ rxvt-unicode/src/rxvtutil.h	2007/12/14 11:11:31	1.36
@@ -101,6 +101,9 @@
 #define IN_RANGE_EXC(val,beg,end) \
   ((unsigned int)(val) - (unsigned int)(beg) <  (unsigned int)(end) - (unsigned int)(beg))
 
+// for m >= -n, ensure remainder lies between 0..n-1
+#define MOD(m,n) (((m) + (n)) % (n))
+
 // makes dynamically allocated objects zero-initialised
 struct zero_initialized {
   void *operator new (size_t s);
@@ -364,7 +367,8 @@
 
 template<typename T>
 struct vector : simplevec<T>
-{ };
+{
+};
 
 struct stringvec : simplevec<char *>
 {