--- rxvt-unicode/src/rxvtutil.h	2014/11/12 12:12:02	1.62
+++ rxvt-unicode/src/rxvtutil.h	2021/05/13 19:40:20	1.65
@@ -3,20 +3,14 @@
 
 #include <stdlib.h>
 #include <string.h>
+
+#define ECB_NO_THREADS 1
 #include "ecb.h"
+
 #include "estl.h"
 
 #include "emman.h"
 
-// increases code size unless -fno-enforce-eh-specs
-#if __GNUC__
-# define NOTHROW
-# define THROW(x)
-#else
-# define NOTHROW  throw()
-# define THROW(x) throw x
-#endif
-
 // various utility functions
 template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; }
 template<typename T, typename U> static inline void max_it (T &a, U b) { a = a > (T)b ? a : (T)b; }
@@ -24,8 +18,6 @@
 template<typename T, typename U, typename V> static inline T    clamp    (T  v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; }
 template<typename T, typename U, typename V> static inline void clamp_it (T &v, U a, V b) {    v = v < (T)a ? a : v >(T)b ? b : v; }
 
-template<typename T> static inline T squared_diff (T a, T b) { return (a - b) * (a - b); }
-
 // linear interpolation
 template<typename T, typename U, typename P>
 static inline T