more debugging

2024/12/s2.c

@@ -200,6 +200,12 @@ getfield(int y, int x)
  walk_finished:
 	printf("└─END '%c' @ (%d, %d) → area %llu, sides %llu\n",
 	    oc, y, x, area, sides);
+	for (yl = 0; yl < H; ++yl) {
+		putchar('<');
+		for (xl = 0; xl < W; ++xl)
+			putchar(F2(yl,xl));
+		printf(">\n");
+	}
 	for (yl = 0; yl < H; ++yl) {
 		unsigned inside = 0;
 		for (xl = 0; xl < W; ++xl) {