diff --git a/src/buffer.cc b/src/buffer.cc
index 2adb1b2c..aa900ccf 100644
--- a/src/buffer.cc
+++ b/src/buffer.cc
@@ -233,6 +233,11 @@ BufferSize Buffer::length() const
     return m_content.size();
 }
 
+BufferSize Buffer::line_count() const
+{
+    return m_lines.size();
+}
+
 BufferString Buffer::string(const BufferIterator& begin, const BufferIterator& end) const
 {
     return m_content.substr(begin.m_position, end - begin);
diff --git a/src/buffer.hh b/src/buffer.hh
index a45c68ea..542a8349 100644
--- a/src/buffer.hh
+++ b/src/buffer.hh
@@ -90,6 +90,7 @@ public:
     BufferIterator begin() const;
     BufferIterator end() const;
     BufferSize     length() const;
+    BufferSize     line_count() const;
 
     BufferIterator iterator_at(const BufferCoord& line_and_column) const;
     BufferCoord    line_and_column_at(const BufferIterator& iterator) const;