From 90d446b2f41f4210eaf84577cf3db7e9557eed8f Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Wed, 9 Mar 2016 23:16:14 +0000
Subject: [PATCH] It can happen during an undo/redo that the buffer be
 temporarily empty

Fix is_end in that case.
---
 src/buffer.inl.hh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/buffer.inl.hh b/src/buffer.inl.hh
index d6af3d4af..8397be336 100644
--- a/src/buffer.inl.hh
+++ b/src/buffer.inl.hh
@@ -104,7 +104,8 @@ inline ByteCoord Buffer::back_coord() const
 
 inline ByteCoord Buffer::end_coord() const
 {
-    return { line_count() - 1, m_lines.back().length() };
+    return m_lines.empty() ?
+        ByteCoord{0,0} : ByteCoord{ line_count() - 1, m_lines.back().length() };
 }
 
 inline BufferIterator::BufferIterator(const Buffer& buffer, ByteCoord coord)