+/*
+ * Use these macros internally, to make tracing less verbose. But leave the
+ * option for compiling the tracing into the library.
+ */
+#if 1
+#define ColorPair(n) NCURSES_BITS(n, 0)
+#define PairNumber(a) (NCURSES_CAST(int,(((unsigned long)(a) & A_COLOR) >> NCURSES_ATTR_SHIFT)))
+#else
+#define ColorPair(pair) COLOR_PAIR(pair)
+#define PairNumber(attr) PAIR_NUMBER(attr)
+#endif
+
+#define unColor(n) unColor2(AttrOf(n))
+#define unColor2(a) ((a) & ALL_BUT_COLOR)
+
+/*
+ * Extended-colors stores the color pair in a separate struct-member than the
+ * attributes. But for compatibility, we handle most cases where a program
+ * written for non-extended colors stores the color in the attributes by
+ * checking for a color pair in both places.
+ */
+#if NCURSES_EXT_COLORS