Force a screen re-draw after tcap 'ti' on terminal open

The 'tcapkopen()' function re-initializes the terminal with the 'ti'
sequence, which for most sane termcap entries is just empty.  But for
'xterm', that seems to actually be a real control sequence (clear and
reset?), and we'd better tell display.c that the screen is now garbage
and needs to be re-drawn.

Also, make tcapkclose() match the 'ti' (terminal init) with a 'te'
(terminal exit).

Maybe we should just stop playing games with ti/te, but this at least
improves the situation a bit.

Reported-by: Bijan Soleymani <bijan@psq.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/tcap.c b/tcap.c
index 33a2f22..fa71fa6 100644
--- a/tcap.c
+++ b/tcap.c
@@ -229,12 +229,19 @@ static void tcapkopen(void)
 #if	PKCODE
 	putpad(TI);
 	ttflush();
+	ttrow = 999;
+	ttcol = 999;
+	sgarbf = TRUE;
 #endif
 	strcpy(sres, "NORMAL");
 }
 
 static void tcapkclose(void)
 {
+#if	PKCODE
+	putpad(TE);
+	ttflush();
+#endif
 }
 
 static void tcapmove(int row, int col)