From d894f563d00050b6aac657c49cc262378613535c Mon Sep 17 00:00:00 2001
From: sgerwk <sgerwk@aol.com>
Date: Sat, 13 Mar 2021 09:58:09 +0100
Subject: [PATCH] optionally, going back from initial page closes tab or elinks

---
 src/config/options.inc | 4 ++++
 src/session/history.c  | 8 ++++++--
 src/session/history.h  | 2 +-
 src/viewer/action.c    | 4 +++-
 4 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/src/config/options.inc b/src/config/options.inc
index 3b82ecde..9c2c7641 100644
--- a/src/config/options.inc
+++ b/src/config/options.inc
@@ -1488,6 +1488,10 @@ static union option_info config_options_info[] = {
 		"Changes take effect at the next elinks restart.")),
 #endif
 
+	INIT_OPT_BOOL("ui", N_("Back to exit"),
+		"back_to_exit", 0, 0,
+		N_("Going back from initial page exits tab or elinks.")),
+
 	INIT_OPT_BOOL("ui", N_("Set window title"),
 		"window_title", 0, 1,
 		N_("Set the window title when running in a windowing "
diff --git a/src/session/history.c b/src/session/history.c
index b07a23d8..dc52f8da 100644
--- a/src/session/history.c
+++ b/src/session/history.c
@@ -165,12 +165,13 @@ go_history(struct session *ses, struct location *loc)
 		 CACHE_MODE_ALWAYS, TASK_HISTORY, 0);
 }
 
-void
+int
 go_history_by_n(struct session *ses, int n)
 {
 	struct location *loc = cur_loc(ses);
 
-	if (!loc) return;
+	if (!loc)
+		return -1;
 
 	if (n > 0) {
 		while (n-- && list_has_next(ses->history.history, loc))
@@ -178,9 +179,12 @@ go_history_by_n(struct session *ses, int n)
 	} else {
 		while (n++ && list_has_prev(ses->history.history, loc))
 			loc = loc->prev;
+		if (n == 0 && ! list_has_prev(ses->history.history, loc))
+			return -1;
 	}
 
 	go_history(ses, loc);
+	return 0;
 }
 
 /** Go backward in the history.  See go_history() description regarding
diff --git a/src/session/history.h b/src/session/history.h
index 566bc322..ea481261 100644
--- a/src/session/history.h
+++ b/src/session/history.h
@@ -40,7 +40,7 @@ void go_history(struct session *ses, struct location *loc);
 
 /** Move back -@a n times if @a n is negative, forward @a n times if
  * positive. */
-void go_history_by_n(struct session *ses, int n);
+int go_history_by_n(struct session *ses, int n);
 
 void go_back(struct session *ses);
 void go_unback(struct session *ses);
diff --git a/src/viewer/action.c b/src/viewer/action.c
index 0a7df2c9..09c1e57d 100644
--- a/src/viewer/action.c
+++ b/src/viewer/action.c
@@ -255,7 +255,9 @@ do_action(struct session *ses, enum main_action action_id, int verbose)
 		{
 			int count = int_max(1, eat_kbd_repeat_count(ses));
 
-			go_history_by_n(ses, -count);
+			if (go_history_by_n(ses, -count) &&
+			    get_opt_bool("ui.back_to_exit", NULL))
+				close_tab(term, ses);
 			break;
 		}
 		case ACT_MAIN_HISTORY_MOVE_FORWARD: