diff --git a/src/display_buffer.hh b/src/display_buffer.hh
index d4f69b23..5b7f432c 100644
--- a/src/display_buffer.hh
+++ b/src/display_buffer.hh
@@ -76,6 +76,8 @@ struct DisplayAtom
     BufferIterator iterator_at(const DisplayCoord& coord) const;
     DisplayCoord   line_and_column_at(const BufferIterator& iterator) const;
 
+    bool           splitable() const { return m_replacement_text.empty(); }
+
 private:
     friend class DisplayBuffer;