--- a/Meerwald/wm_bruyn_d.c	Tue Sep 21 13:40:51 2010 +0200
+++ b/Meerwald/wm_bruyn_d.c	Sat Jan 28 23:54:58 2023 +0100
@@ -41,7 +41,7 @@
   int c;
   int i, j;
   int n;
-  int col, row;
+  int row;
   int n_block;
 
   char signature_name[MAXPATHLEN];
@@ -72,7 +72,7 @@
       case '?':
         usage();
         break;
-      case 'k':  
+      case 'k':
         skipping = 1;
         break;
       case 'n':
@@ -243,7 +243,6 @@
   fclose(in);
 
   row = 0;
-  col = 0;
 
   // allocate memory for one block
   block = alloc_grays(blocksize, blocksize);
@@ -255,7 +254,7 @@
   category1 = alloc_grays(blocksize, blocksize);
   category2 = alloc_grays(blocksize, blocksize);
 
-  // set up category classification array according to 
+  // set up category classification array according to
   // pattern type parameter
   for (i = 0; i < blocksize; i++)
     for (j = 0; j < blocksize; j++) {
@@ -290,9 +289,9 @@
 
     // copy image block
     fprintf(stderr, "XXX1 %d %d %d\n", xb*blocksize, yb*blocksize, blocksize);
-    copy_grays_to_block(block, image, xb * blocksize, yb * blocksize, blocksize, blocksize);    
+    copy_grays_to_block(block, image, xb * blocksize, yb * blocksize, blocksize, blocksize);
     fprintf(stderr, "XXX2\n");
-    
+
     if (verbose > 0)
       fprintf(stderr, "detecting bit #%d in block at (%d/%d)\n", n, xb * blocksize, yb * blocksize);