diff --git a/.test.bash.swp b/.test.bash.swp
new file mode 100644
index 0000000..b2e2850
Binary files /dev/null and b/.test.bash.swp differ
diff --git a/more/apple_silicon/macros.S b/more/apple_silicon/macros.S
index d506b73..e46f1d6 100644
--- a/more/apple_silicon/macros.S
+++ b/more/apple_silicon/macros.S
@@ -3,6 +3,8 @@
 //
 //  Perry Kivolowitz
 //  A Gentle Introduction to Assembly Language
+//
+// This is a test.
 
 #if defined(__APPLE__)
 
diff --git a/test.bash b/test.bash
new file mode 100755
index 0000000..137bb84
--- /dev/null
+++ b/test.bash
@@ -0,0 +1,2 @@
+#!/bin/bash
+git diff --name-only main | grep -i ".md"