adding foo
>>> two diffs showing three added lines <<<
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,5 @@ hello world
+
 hello world
+
 goodbye world
+
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,5 @@ hello world
+
 hello world
+
 goodbye world
+
>>> no diffs <<<
>>> four diffs showing added space first on the first line <<<
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,2 @@ hello world
-hello world
+	 hello world
 goodbye world
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,2 @@ hello world
-hello world
+	 hello world
 goodbye world
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,2 @@ hello world
-hello world
+	 hello world
 goodbye world
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,2 @@ hello world
-hello world
+	 hello world
 goodbye world
>>> two diffs showing space appended to the first line <<<
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,2 @@ hello world
-hello world
+hello world	 
 goodbye world
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,2 @@ hello world
-hello world
+hello world	 
 goodbye world
>>> no diffs <<<
>>> four diffs showing space inserted into "goodbye" <<<
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,2 @@ hello world
 hello world
-goodbye world
+good bye world
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,2 @@ hello world
 hello world
-goodbye world
+good bye world
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,2 @@ hello world
 hello world
-goodbye world
+good bye world
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,2 @@ hello world
 hello world
-goodbye world
+good bye world
>>> two diffs showing changed whitespace amount in the last line <<<
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,2 @@ hello world
 hello world
-goodbye world
+goodbye		  	world
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,2 @@ hello world
 hello world
-goodbye world
+goodbye		  	world
>>> no diffs <<<
>>> four diffs showing added blank line w/horizontal space <<<
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,3 @@ hello world
 hello world
+ 	
 goodbye world
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,3 @@ hello world
 hello world
+ 	
 goodbye world
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,3 @@ hello world
 hello world
+ 	
 goodbye world
diff -r 540c40a65b78 foo
--- a/foo
+++ b/foo
@@ -1,2 +1,3 @@ hello world
 hello world
+ 	
 goodbye world