2007-05-24 16:04 AEST by Arthur Barrett - Tony added code to 2.5.04 to find other BOM but it caused update-patch and diff 
to stop working.  So it was removed:
Index: io.c
===================================================================
RCS file: /usr/local/cvs/cvsnt/diff/io.c,v
retrieving revision 1.16.2.18
retrieving revision 1.16.2.17
diff -c -r1.16.2.18 -r1.16.2.17
*** io.c	1 Sep 2006 11:59:07 -0000	1.16.2.18
--- io.c	7 Feb 2006 18:10:28 -0000	1.16.2.17
***************
*** 122,134 ****
  	      current->buffered_chars = 0;
  	    }
  #endif
! 	  if(binary_file_p (current->buffer, n))
! 		return 1;
! 	  if(current->buffered_chars>3 && !memcmp(current-
>buffer,"\xef\xbb\xbf",3))
! 	  {
! 		  memmove(current->buffer,current->buffer+3,current-
>buffered_chars-3);
! 		  current->buffered_chars-=3;
! 	  }
  	}
  
  #ifdef HAVE_SETMODE
--- 122,128 ----
  	      current->buffered_chars = 0;
  	    }
  #endif
! 	  return binary_file_p (current->buffer, n);
  	}
  
  #ifdef HAVE_SETMODE
***************
*** 144,165 ****
  				pfatal_with_name (current->name);
  		}
  #endif
      }
  
! 	if(current->bufsize>3)
! 	{
! 		int n = read (current->desc, current->buffer, 3);
! 		if (n == -1)
! 			pfatal_with_name (current->name);
! 	  if(!memcmp(current->buffer,"\xef\xbb\xbf",3))
! 	  {
! 		  current->buffered_chars=0;
! 	  }
! 	  else
! 		  current->buffered_chars=3;
! 	}
! 	else
! 		current->buffered_chars = 0;
    return 0;
  }
  
--- 138,147 ----
  				pfatal_with_name (current->name);
  		}
  #endif
+ 
      }
  
!   current->buffered_chars = 0;
    return 0;
  }