Module Name: src
Committed By: mlelstv
Date: Fri Sep 1 07:21:01 UTC 2017
Modified Files:
src/external/bsd/nvi/dist/cl: cl_main.c cl_screen.c
Log Message:
When resizing nvi in xterm, a scroll region is set with the old size
which garbles the display.
The scroll region is set for a terminfo scroll operation and then
reset to the current window size. While xterm lets you clear a
scroll region, there is no way to do this in terminfo except by
resetting the terminal which has a visual side effect.
Xterm actually clears the scroll region as part of the resize but
that happens before a program gets the SIGWINCH signal. When nvi sees
the SIGWINCH signal, it exits the vi mode using a scroll operation to
tidy up the display before it reenters vi mode with the new window size.
This patch does two things:
- make nvi also invoke a previous SIGWINCH handler (not sufficient,
but that's how curses wants it).
- skip the tidy up in case of a restart (avoids the scroll region)
To generate a diff of this commit:
cvs rdiff -u -r1.5 -r1.6 src/external/bsd/nvi/dist/cl/cl_main.c \
src/external/bsd/nvi/dist/cl/cl_screen.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/external/bsd/nvi/dist/cl/cl_main.c
diff -u src/external/bsd/nvi/dist/cl/cl_main.c:1.5 src/external/bsd/nvi/dist/cl/cl_main.c:1.6
--- src/external/bsd/nvi/dist/cl/cl_main.c:1.5 Wed Nov 25 20:25:20 2015
+++ src/external/bsd/nvi/dist/cl/cl_main.c Fri Sep 1 07:21:01 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: cl_main.c,v 1.5 2015/11/25 20:25:20 christos Exp $ */
+/* $NetBSD: cl_main.c,v 1.6 2017/09/01 07:21:01 mlelstv Exp $ */
/*-
* Copyright (c) 1993, 1994
* The Regents of the University of California. All rights reserved.
@@ -16,7 +16,7 @@
static const char sccsid[] = "Id: cl_main.c,v 10.54 2001/07/29 19:07:27 skimo Exp (Berkeley) Date: 2001/07/29 19:07:27 ";
#endif /* not lint */
#else
-__RCSID("$NetBSD: cl_main.c,v 1.5 2015/11/25 20:25:20 christos Exp $");
+__RCSID("$NetBSD: cl_main.c,v 1.6 2017/09/01 07:21:01 mlelstv Exp $");
#endif
#include <sys/types.h>
@@ -311,6 +311,10 @@ h_winch(int signo)
continue;
F_SET(clp, CL_SIGWINCH);
+
+ /* If there was a previous handler, call that. */
+ if (clp->oact[INDX_WINCH].sa_handler)
+ clp->oact[INDX_WINCH].sa_handler(signo);
}
#undef GLOBAL_CLP
Index: src/external/bsd/nvi/dist/cl/cl_screen.c
diff -u src/external/bsd/nvi/dist/cl/cl_screen.c:1.5 src/external/bsd/nvi/dist/cl/cl_screen.c:1.6
--- src/external/bsd/nvi/dist/cl/cl_screen.c:1.5 Wed Nov 25 20:25:20 2015
+++ src/external/bsd/nvi/dist/cl/cl_screen.c Fri Sep 1 07:21:01 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: cl_screen.c,v 1.5 2015/11/25 20:25:20 christos Exp $ */
+/* $NetBSD: cl_screen.c,v 1.6 2017/09/01 07:21:01 mlelstv Exp $ */
/*-
* Copyright (c) 1993, 1994
* The Regents of the University of California. All rights reserved.
@@ -16,7 +16,7 @@
static const char sccsid[] = "Id: cl_screen.c,v 10.56 2002/05/03 19:59:44 skimo Exp (Berkeley) Date: 2002/05/03 19:59:44 ";
#endif /* not lint */
#else
-__RCSID("$NetBSD: cl_screen.c,v 1.5 2015/11/25 20:25:20 christos Exp $");
+__RCSID("$NetBSD: cl_screen.c,v 1.6 2017/09/01 07:21:01 mlelstv Exp $");
#endif
#include <sys/types.h>
@@ -430,7 +430,7 @@ cl_vi_end(GS *gp)
* Move to the bottom of the window (some endwin implementations don't
* do this for you).
*/
- if (!F_ISSET(clp, CL_IN_EX)) {
+ if (!F_ISSET(clp, CL_IN_EX) && !F_ISSET(gp, G_SRESTART)) {
(void)move(0, 0);
(void)deleteln();
(void)move(LINES - 1, 0);
