From bee3e3e28d04a237b1013b1dd3d36cddcd326891 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Wed, 15 Jun 2016 09:13:46 +0000
Subject: Copy mode needs to keep the original grid intact so it can copy from
 it if needed, so it disables reading from the pane. This can be problem with
 some programs. So make tmux automatically exit all modes after 180 seconds of
 inactivity and if there is pending output.

---
 tmux.h   |  3 +++
 window.c | 27 +++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/tmux.h b/tmux.h
index b8d1a1f5..b84530f2 100644
--- a/tmux.h
+++ b/tmux.h
@@ -823,6 +823,7 @@ struct window_mode {
 	void	(*key)(struct window_pane *, struct client *, struct session *,
 		    key_code, struct mouse_event *);
 };
+#define WINDOW_MODE_TIMEOUT 180
 
 /* Structures for choose mode. */
 struct window_choose_data {
@@ -905,6 +906,8 @@ struct window_pane {
 
 	const struct window_mode *mode;
 	void		*modedata;
+	struct event	 modetimer;
+	time_t		 modelast;
 
 	TAILQ_ENTRY(window_pane) entry;
 	RB_ENTRY(window_pane) tree_entry;
diff --git a/window.c b/window.c
index a252629d..bba8e3b1 100644
--- a/window.c
+++ b/window.c
@@ -17,6 +17,7 @@
  */
 
 #include <sys/types.h>
+#include <sys/ioctl.h>
 
 #include <errno.h>
 #include <fcntl.h>
@@ -1046,15 +1047,38 @@ window_pane_alternate_off(struct window_pane *wp, struct grid_cell *gc,
 	wp->flags |= PANE_REDRAW;
 }
 
+static void
+window_pane_mode_timer(__unused int fd, __unused short events, void *arg)
+{
+	struct window_pane	*wp = arg;
+	struct timeval		 tv = { .tv_sec = 10 };
+	int			 n = 0;
+
+	evtimer_del(&wp->modetimer);
+	evtimer_add(&wp->modetimer, &tv);
+
+	log_debug("%%%u in mode: last=%ld", wp->id, (long)wp->modelast);
+
+	if (wp->modelast < time(NULL) - WINDOW_MODE_TIMEOUT) {
+		if (ioctl(wp->fd, FIONREAD, &n) == -1 || n > 0)
+			window_pane_reset_mode(wp);
+	}
+}
+
 int
 window_pane_set_mode(struct window_pane *wp, const struct window_mode *mode)
 {
 	struct screen	*s;
+	struct timeval	 tv = { .tv_sec = 10 };
 
 	if (wp->mode != NULL)
 		return (1);
 	wp->mode = mode;
 
+	wp->modelast = time(NULL);
+	evtimer_set(&wp->modetimer, window_pane_mode_timer, wp);
+	evtimer_add(&wp->modetimer, &tv);
+
 	if ((s = wp->mode->init(wp)) != NULL)
 		wp->screen = s;
 	wp->flags |= (PANE_REDRAW|PANE_CHANGED);
@@ -1069,6 +1093,8 @@ window_pane_reset_mode(struct window_pane *wp)
 	if (wp->mode == NULL)
 		return;
 
+	evtimer_del(&wp->modetimer);
+
 	wp->mode->free(wp);
 	wp->mode = NULL;
 
@@ -1088,6 +1114,7 @@ window_pane_key(struct window_pane *wp, struct client *c, struct session *s,
 		return;
 
 	if (wp->mode != NULL) {
+		wp->modelast = time(NULL);
 		if (wp->mode->key != NULL)
 			wp->mode->key(wp, c, s, key, m);
 		return;
-- 
cgit