fix for the totsize / cut bug

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@16 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

BUGS

@@ -32,3 +32,8 @@
   until a pageup/down occurs (22).
 - edit_refresh() and update_line() (and related functions), have 
   trouble when a tab is the character that is the boundry at COLS (23)
+- there is an off-by-one error in keeping track of totsize.  It is caused
+  by the fact that we count the newline at the end when we read in a file
+  but we do not, in fact, display this newline.  This should go away
+  implicitly when the "Magic Line" returns, but it is noted here for
+  documentation's sake. (24)

cut.c

@@ -44,7 +44,7 @@ void add_to_cutbuffer(filestruct * inptr)
 	    inptr->data);
 #endif
 
-    totsize -= strlen(inptr->data) + 1;
+    totsize -= strlen(inptr->data);
     tmp = cutbuffer;
     if (cutbuffer == NULL) {
 	cutbuffer = inptr;
@@ -82,6 +82,7 @@ void cut_marked_segment(filestruct * top, int top_x, filestruct * bot,
 	next = tmp->next;
 	add_to_cutbuffer(tmp);
 	totlines--;
+	totsize--; /* newline (add_to_cutbuffer doesn't count newlines) */
 	tmp = next;
     }
     while (next != bot && next != NULL);
@@ -101,7 +102,8 @@ void cut_marked_segment(filestruct * top, int top_x, filestruct * bot,
     next = bot->next;
 
     /* We explicitly don't decrement totlines here because we don't snarf
-     * up a newline when we're grabbing the last line of the mark */
+     * up a newline when we're grabbing the last line of the mark.  For
+     * the same reason we don't do an extra totsize decrement */
 
     add_to_cutbuffer(bot);
     top->next = next;
@@ -183,7 +185,7 @@ int do_cut_text(void)
 	UNSET(MARK_ISSET);
 	marked_cut = 1;
 	set_modified();
-	edit_update_top(edittop);
+	edit_update(current);
 	return 1;
 #else
     if (0) {
@@ -201,10 +203,9 @@ int do_cut_text(void)
 	    current = fileptr;
 	} else {
 	    add_to_cutbuffer(fileptr);
-	    totlines--;
 	    fileage = make_new_node(NULL);
 	    fileage->data = nmalloc(1);
-	    strcpy(fileage->data, "");
+	    fileage->data[0] = '\0';
 	    current = fileage;
 	}
     } else {

winio.c

@@ -1066,11 +1066,6 @@ int do_cursorpos(void)
     for (fileptr = current->next; fileptr != NULL; fileptr = fileptr->next)
     	tot += strlen(fileptr->data) + 1;
 
-    /* FIXME - This is gardly elegant */
-/*    if (current == fileage && strlen(current->data) == 0)
-	i = 0;
-*/
-
     if (totlines > 0)
 	linepct = 100 * current->lineno / totlines;
     else