Index: Test.cpp
===================================================================
--- Test.cpp	(revision 0)
+++ Test.cpp	(revision 1)
@@ -0,0 +1 @@
+First line

Index: Test.cpp
===================================================================
--- Test.cpp	(revision 1)
+++ Test.cpp	(revision 2)
@@ -1 +1,2 @@
 First line
+Second line

Index: Test.cpp
===================================================================
--- Test.cpp	(revision 2)
+++ Test.cpp	(revision 3)
@@ -1,2 +1 @@
 First line
-Second line

Index: Test.cpp
===================================================================
--- Test.cpp	(revision 3)
+++ Test.cpp	(revision 4)
@@ -1 +1,2 @@
 First line
+Second line