vi: use alternate screen buffer

Implement the "ESC[?1049h" and "ESC[?1049l" ANSI escape sequences
to switch between the alternate and normal screen buffers.

This allows vi to restore the original screen contents on exit.

1 files changed, 0 insertions, 5 deletions

diff --git a/editors/vi.c b/editors/vi.c
index 91a3e0ac1..a8b4dc5a4 100644
--- a/editors/vi.c
+++ b/editors/vi.c
@@ -1020,12 +1020,7 @@ static void refresh(int full_screen)
 static void redraw(int full_screen)
 {
         // cursor to top,left; clear to the end of screen
-#if !ENABLE_PLATFORM_MINGW32
         write1(ESC_SET_CURSOR_TOPLEFT ESC_CLEAR2EOS);
-#else
-        write1(ESC_SET_CURSOR_TOPLEFT);
-        reset_screen();
-#endif
         screen_erase();         // erase the internal screen buffer
         last_status_cksum = 0;  // force status update
         refresh(full_screen);   // this will redraw the entire display