From 24c53060e85080e693c0ee530ef4c873445afaa0 Mon Sep 17 00:00:00 2001
From: John Hawthorn <john.hawthorn@gmail.com>
Date: Wed, 28 Dec 2016 01:09:01 -0800
Subject: Fix tty_interface clear for num_lines=0

---
 src/tty_interface.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/tty_interface.c b/src/tty_interface.c
index 0385719..db0b7e2 100644
--- a/src/tty_interface.c
+++ b/src/tty_interface.c
@@ -16,7 +16,9 @@ static void clear(tty_interface_t *state) {
 		tty_newline(tty);
 	}
 	tty_clearline(tty);
-	tty_moveup(tty, line - 1);
+	if (state->options->num_lines > 0) {
+		tty_moveup(tty, line - 1);
+	}
 	tty_flush(tty);
 }
 
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