point_t a;
point_t b;
fillstyle_t*style;
+#ifdef DEBUG
int tmp;
+#endif
struct _edge *next;
} edge_t;
fillstyle_t* (*diff)(windstate_t*left, windstate_t*right);
} windrule_t;
+#define SEGNR(s) ((s)?(s)->nr:-1)
+
typedef struct _segment {
point_t a;
point_t b;