From d7f934b7ca1b37dd5710e0b058a6ac1f4fe1c9d9 Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Wed, 19 Oct 2011 14:25:13 +0000
Subject: [PATCH] Buffer: iterator_at prevents getting iterators on end of line

---
 src/buffer.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/buffer.cc b/src/buffer.cc
index 324ecd66..cf60fa84 100644
--- a/src/buffer.cc
+++ b/src/buffer.cc
@@ -57,8 +57,9 @@ BufferIterator Buffer::iterator_at(const BufferCoord& line_and_column) const
     if (m_lines.empty())
         return begin();
 
-    BufferPos line   = Kakoune::clamp<int>(0, m_lines.size() - 1, line_and_column.line);
-    BufferPos column = Kakoune::clamp<int>(0, line_length(line),  line_and_column.column);
+    BufferPos line = Kakoune::clamp<int>(0, m_lines.size() - 1, line_and_column.line);
+    int col_max = std::max(0, line_length(line) - 1);
+    BufferPos column = Kakoune::clamp<int>(0,  col_max, line_and_column.column);
     return BufferIterator(*this, m_lines[line] + column);
 }