Support "alternate screen" mode (terminfo smcup/rmcup) typically used by full

screen interactive programs to preserve the screen contents. When activated, it
saves a copy of the visible grid and disables scrolling into and resizing out
of the history; when deactivated the visible data is restored and the history
reenabled.

1 files changed, 4 insertions, 0 deletions

diff --git a/window.c b/window.c
index 95addc41..753f796a 100644
--- a/window.c
+++ b/window.c
@@ -407,6 +407,8 @@ window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
 	wp->sx = sx;
 	wp->sy = sy;
 
+	wp->saved_grid = NULL;
+
 	screen_init(&wp->base, sx, sy, hlimit);
 	wp->screen = &wp->base;
 
@@ -425,6 +427,8 @@ window_pane_destroy(struct window_pane *wp)
 
 	window_pane_reset_mode(wp);
 	screen_free(&wp->base);
+	if (wp->saved_grid != NULL)
+		grid_destroy(wp->saved_grid);
 
 	buffer_destroy(wp->in);
 	buffer_destroy(wp->out);