diff --git a/test-files/test-ts2sw2et.txt b/test-files/test-ts2sw2et.txt
index f480955..ad4f2f9 100644
--- a/test-files/test-ts2sw2et.txt
+++ b/test-files/test-ts2sw2et.txt
@@ -23,3 +23,25 @@ test
                                         test
                                           test
 
+test
+	test
+		test
+			test
+				test
+					test
+						test
+							test
+								test
+									test
+										test
+											test
+												test
+													test
+														test
+															test
+																test
+																	test
+																		test
+																			test
+																				test
+																					test
diff --git a/test-files/test-ts2sw2noet.txt b/test-files/test-ts2sw2noet.txt
index 35e8943..2bd2083 100644
--- a/test-files/test-ts2sw2noet.txt
+++ b/test-files/test-ts2sw2noet.txt
@@ -1,5 +1,28 @@
 vim:tw=78:ts=2:sw=2:noet:nolist
 
+test
+  test
+    test
+      test
+        test
+          test
+            test
+              test
+                test
+                  test
+                    test
+                      test
+                        test
+                          test
+                            test
+                              test
+                                test
+                                  test
+                                    test
+                                      test
+                                        test
+                                          test
+
 test
 	test
 		test
@@ -22,4 +45,3 @@ test
 																			test
 																				test
 																					test
-
diff --git a/test-files/test-ts4sw4et.txt b/test-files/test-ts4sw4et.txt
index f1e99bf..b07cc73 100644
--- a/test-files/test-ts4sw4et.txt
+++ b/test-files/test-ts4sw4et.txt
@@ -23,3 +23,25 @@ test
                                                                                 test
                                                                                     test
 
+test
+	test
+		test
+			test
+				test
+					test
+						test
+							test
+								test
+									test
+										test
+											test
+												test
+													test
+														test
+															test
+																test
+																	test
+																		test
+																			test
+																				test
+																					test
diff --git a/test-files/test-ts4sw4noet.txt b/test-files/test-ts4sw4noet.txt
index 8a72d94..c6822a8 100644
--- a/test-files/test-ts4sw4noet.txt
+++ b/test-files/test-ts4sw4noet.txt
@@ -1,5 +1,28 @@
 vim:tw=78:ts=4:sw=4:noet:nolist
 
+test
+    test
+        test
+            test
+                test
+                    test
+                        test
+                            test
+                                test
+                                    test
+                                        test
+                                            test
+                                                test
+                                                    test
+                                                        test
+                                                            test
+                                                                test
+                                                                    test
+                                                                        test
+                                                                            test
+                                                                                test
+                                                                                    test
+
 test
 	test
 		test
@@ -22,4 +45,3 @@ test
 																			test
 																				test
 																					test
-
diff --git a/test-files/test-ts8sw8et.txt b/test-files/test-ts8sw8et.txt
index 247802e..b9d5e00 100644
--- a/test-files/test-ts8sw8et.txt
+++ b/test-files/test-ts8sw8et.txt
@@ -23,3 +23,25 @@ test
                                                                                                                                                                 test
                                                                                                                                                                         test
 
+test
+	test
+		test
+			test
+				test
+					test
+						test
+							test
+								test
+									test
+										test
+											test
+												test
+													test
+														test
+															test
+																test
+																	test
+																		test
+																			test
+																				test
+																					test
diff --git a/test-files/test-ts8sw8noet.txt b/test-files/test-ts8sw8noet.txt
index 1ee2a19..32951b6 100644
--- a/test-files/test-ts8sw8noet.txt
+++ b/test-files/test-ts8sw8noet.txt
@@ -1,5 +1,28 @@
 vim:tw=78:ts=8:sw=8:noet:nolist
 
+test
+        test
+                test
+                        test
+                                test
+                                        test
+                                                test
+                                                        test
+                                                                test
+                                                                        test
+                                                                                test
+                                                                                        test
+                                                                                                test
+                                                                                                        test
+                                                                                                                test
+                                                                                                                        test
+                                                                                                                                test
+                                                                                                                                        test
+                                                                                                                                                test
+                                                                                                                                                        test
+                                                                                                                                                                test
+                                                                                                                                                                        test
+
 test
 	test
 		test
@@ -22,4 +45,3 @@ test
 																			test
 																				test
 																					test
-