diff --git a/.exrc b/.exrc
new file mode 100644
index 0000000..83d097e
--- /dev/null
+++ b/.exrc
@@ -0,0 +1,3 @@
+augroup exrc
+  autocmd BufRead,BufNewFile index.toml setlocal nomodifiable readonly
+augroup END
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..8107864
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+index.toml linguist-generated=true