From 5a0332ac87dcdab1f811d99599fac58cbc548272 Mon Sep 17 00:00:00 2001
From: Maxime Coste <mawww@kakoune.org>
Date: Fri, 24 Nov 2017 16:36:37 +0800
Subject: [PATCH] Window: fix buffer_coord when a line buffer range is empty

Fixes #1711
---
 src/window.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/window.cc b/src/window.cc
index 76cb10cb..3e6ba661 100644
--- a/src/window.cc
+++ b/src/window.cc
@@ -260,7 +260,8 @@ BufferCoord find_buffer_coord(const DisplayLine& line, const Buffer& buffer,
         }
         column -= len;
     }
-    return buffer.clamp(buffer.prev(range.end));
+    return range.end == BufferCoord{0,0} ?
+        range.end : buffer.prev(range.end);
 }
 }