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fix from upstream
diff -ur nano-1.3.12/src/move.c nano-1.3.12-fixed/src/move.c
--- nano-1.3.12/src/move.c 2006-05-21 22:08:49.000000000 -0400
+++ nano-1.3.12-fixed/src/move.c 2006-07-06 17:01:03.000000000 -0400
@@ -521,6 +521,16 @@
/* Scroll the edit window up one line. */
edit_scroll(UP, 1);
+
+ /* If we're not on the first line of the edit window, update the
+ * line we were on before and the line we're on now. The former
+ * needs to be redrawn if we're not on the first page, and the
+ * latter needs to be drawn unconditionally. */
+ if (openfile->current_y > 0) {
+ if (need_vertical_update(0))
+ update_line(openfile->current->next, 0);
+ update_line(openfile->current, openfile->current_x);
+ }
}
#endif /* !NANO_TINY */
@@ -574,6 +584,16 @@
/* Scroll the edit window down one line. */
edit_scroll(DOWN, 1);
+
+ /* If we're not on the last line of the edit window, update the line
+ * we were on before and the line we're on now. The former needs to
+ * be redrawn if we're not on the first page, and the latter needs
+ * to be drawn unconditionally. */
+ if (openfile->current_y < editwinrows - 1) {
+ if (need_vertical_update(0))
+ update_line(openfile->current->prev, 0);
+ update_line(openfile->current, openfile->current_x);
+ }
}
#endif /* !NANO_TINY */
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