diff --git a/test-files/test-ts2sw2et.txt b/test-files/test-ts2sw2et.txt
new file mode 100644
index 0000000..c0660fb
--- /dev/null
+++ b/test-files/test-ts2sw2et.txt
@@ -0,0 +1,25 @@
+vim:tw=78:ts=2:sw=2:et
+
+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
new file mode 100644
index 0000000..f0d1c8f
--- /dev/null
+++ b/test-files/test-ts2sw2noet.txt
@@ -0,0 +1,25 @@
+vim:tw=78:ts=2:sw=2:noet
+
+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-ts4sw4et.txt b/test-files/test-ts4sw4et.txt
new file mode 100644
index 0000000..f3ba85b
--- /dev/null
+++ b/test-files/test-ts4sw4et.txt
@@ -0,0 +1,25 @@
+vim:tw=78:ts=4:sw=4:et
+
+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
new file mode 100644
index 0000000..e38791e
--- /dev/null
+++ b/test-files/test-ts4sw4noet.txt
@@ -0,0 +1,25 @@
+vim:tw=78:ts=4:sw=4:noet
+
+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-ts8sw8et.txt b/test-files/test-ts8sw8et.txt
new file mode 100644
index 0000000..0550dbe
--- /dev/null
+++ b/test-files/test-ts8sw8et.txt
@@ -0,0 +1,25 @@
+vim:tw=78:ts=8:sw=8:et
+
+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
new file mode 100644
index 0000000..7b31d5b
--- /dev/null
+++ b/test-files/test-ts8sw8noet.txt
@@ -0,0 +1,25 @@
+vim:tw=78:ts=8:sw=8:noet
+
+test
+	test
+		test
+			test
+				test
+					test
+						test
+							test
+								test
+									test
+										test
+											test
+												test
+													test
+														test
+															test
+																test
+																	test
+																		test
+																			test
+																				test
+																					test
+