From fffa405bfd86ec49fd27d7f9a903271409a0ea24 Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Sun, 23 Oct 2011 20:26:30 +0000
Subject: [PATCH] DisplayBuffer: overload atom_containing with a version taking
 an iterator to search start

---
 src/display_buffer.cc | 10 ++++++++--
 src/display_buffer.hh |  1 +
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/display_buffer.cc b/src/display_buffer.cc
index 64b2099e..a263d8f5 100644
--- a/src/display_buffer.cc
+++ b/src/display_buffer.cc
@@ -88,10 +88,16 @@ DisplayBuffer::iterator DisplayBuffer::insert(iterator where, const DisplayAtom&
 
 DisplayBuffer::iterator DisplayBuffer::atom_containing(const BufferIterator& where)
 {
-    for (iterator it = m_atoms.begin(); it != m_atoms.end(); ++it)
+    return atom_containing(where, m_atoms.begin());
+}
+
+DisplayBuffer::iterator DisplayBuffer::atom_containing(const BufferIterator& where,
+                                                       iterator start)
+{
+    for (iterator it = start; it != m_atoms.end(); ++it)
     {
         if (it->end() > where)
-            return it;
+            return it->begin() <= where ? it : end();
     }
     return end();
 }
diff --git a/src/display_buffer.hh b/src/display_buffer.hh
index c351c219..b3cd8453 100644
--- a/src/display_buffer.hh
+++ b/src/display_buffer.hh
@@ -113,6 +113,7 @@ public:
     const_iterator end()   const { return m_atoms.end(); }
 
     iterator atom_containing(const BufferIterator& where);
+    iterator atom_containing(const BufferIterator& where, iterator start);
 
     const DisplayAtom& front() const { return m_atoms.front(); }
     const DisplayAtom& back()  const { return m_atoms.back(); }