page_up() - Rewritten with a loop to make screen updates work when mark is set (fixes bug #59).

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@618 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

BUGS

@@ -107,6 +107,8 @@
   Matthias Andree) (58) [FIXED].
 - Can modify the current file in view mode with ^W^R (discovered by Rocco
   Corsi) (58) [FIXED].
+- When page up is used after two page down's, the screen doesn't update
+  properly (discovered by David Lawrence Ramsey) (59) [FIXED].
 
 ** Open BUGS **
 

ChangeLog

@@ -29,6 +29,10 @@ Cvs code -
 	- Added the "Goto Directory" code (Rocco)
 - global.c:
 	- Updated some of the lists for the "Goto Directory" code (Rocco)
+- move.c:
+  page_up()
+	- Rewritten with a loop to make screen updates work when
+	  mark is set (fixes bug #59).
 - nano.c:
   do_alt_speller()
 	- Reposition cursor on same line as before ^T was called (Rocco)

move.c

@@ -146,7 +146,8 @@ void page_up_center(void)
 
 int page_up(void)
 {
-    filestruct *fileptr = edittop;
+   int i;
+
     wrap_reset();
     current_x = 0;
     placewewant = 0;
@@ -155,13 +156,11 @@ int page_up(void)
 	return 0;
 
     current_y = 0;
-    if (fileptr->next != NULL)
-	fileptr = fileptr->next;
-    if (fileptr->next != NULL)
-	fileptr = fileptr->next;
-
     current = edittop;
-    edit_update(fileptr, BOTTOM);
+    for (i = 0; i <= editwinrows - 3 && current->prev != NULL; i++)
+	current = current->prev;
+
+    edit_update(current, TOP);
     update_cursor();
 
     UNSET(KEEP_CUTBUFFER);