1 files changed, 5 insertions, 7 deletions
diff --git a/src/display_buffer.cc b/src/display_buffer.cc
index 8a8eb09e..f36527be 100644
--- a/src/display_buffer.cc
+++ b/src/display_buffer.cc
@@ -9,17 +9,15 @@ DisplayBuffer::DisplayBuffer()
 {
 }
 
-DisplayBuffer::iterator DisplayBuffer::split(iterator atom, size_t pos_in_atom)
+DisplayBuffer::iterator DisplayBuffer::split(iterator atom, const BufferIterator& pos)
 {
     assert(atom < end());
-    assert(pos_in_atom > 0);
-    assert(pos_in_atom < atom->content.length());
-    DisplayAtom new_atom(atom->begin, atom->begin + pos_in_atom,
-                         atom->content.substr(0, pos_in_atom),
+    assert(pos > atom->begin);
+    assert(pos < atom->end);
+    DisplayAtom new_atom(atom->begin, pos,
                          atom->fg_color, atom->bg_color, atom->attribute);
 
-    atom->begin = atom->begin + pos_in_atom;
-    atom->content = atom->content.substr(pos_in_atom);
+    atom->begin = pos;
     return insert(atom, std::move(new_atom));
 }