diff --git a/after/ftplugin/janet.vim b/after/ftplugin/janet.vim
index d1a54b2..bf43d98 100644
--- a/after/ftplugin/janet.vim
+++ b/after/ftplugin/janet.vim
@@ -1,3 +1,8 @@
+" mostly copied from https://github.com/janet-lang/janet.vim/blob/67075b190a44310df356137e35cc1949782b20e0/ftplugin/janet.vim
+
+setlocal comments=n:#
 setlocal commentstring=#\ %s
+setlocal define=\\v[(/]def(ault)@!\\S*
+setlocal formatoptions-=t
 setlocal lisp
 setlocal tabstop=2
diff --git a/rocks.toml b/rocks.toml
index 8f21c09..8e9c0de 100644
--- a/rocks.toml
+++ b/rocks.toml
@@ -100,6 +100,7 @@ luautf8 = "0.1.6"
 "zeta.nvim"= "rocksdev"
 tree-sitter-janet_simple = "0.0.33"
 tree-sitter-scheme = "0.0.31"
+nvim-parinfer = "1.2.0"
 
 # [plugins."xcodebuild.nvim"]
 # git = "wojciech-kulik/xcodebuild.nvim"