diff --git a/rc/extra/moon.kak b/rc/extra/moon.kak
new file mode 100644
index 00000000..98658cd9
--- /dev/null
+++ b/rc/extra/moon.kak
@@ -0,0 +1,91 @@
+# http://moonscript.org
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+# require commenting.kak
+
+# Detection
+# ‾‾‾‾‾‾‾‾‾
+
+hook global BufSetOption mimetype=text/x-moon %{
+    set buffer filetype moon
+}
+
+hook global BufCreate .*[.](moon) %{
+    set buffer filetype moon
+}
+
+# Highlighters
+# ‾‾‾‾‾‾‾‾‾‾‾‾
+
+addhl -group / regions -default code moon \
+    double_string '"'  (?<!\\)(\\\\)*" '' \
+    single_string "'"  (?<!\\)(\\\\)*' '' \
+    comment       '--' '$'             '' \
+
+addhl -group /moon/double_string fill string
+addhl -group /moon/double_string regions regions interpolation \Q#{ \} \{
+addhl -group /moon/double_string/regions/interpolation fill meta
+
+addhl -group /moon/single_string fill string
+
+addhl -group /moon/comment fill comment
+
+addhl -group /moon/code regex ([.\\](?=[A-Za-z]\w*))|(\b[A-Za-z]\w*:)|(\b[A-Za-z]\w*\K!+)|(\W\K[@:][A-Za-z]\w*) 0:identifier
+addhl -group /moon/code regex \<(and|break|catch|class|continue|do|else(if)?|export|extends|false|finally|for|from|if|import|in|local|nil|not|or|return|super|switch|then|true|try|unless|using|when|while|with)\> 0:keyword
+
+# Commands
+# ‾‾‾‾‾‾‾‾
+
+def -hidden _moon_filter_around_selections %{
+    eval -draft -itersel %{
+        exec <a-x>
+        # remove trailing white spaces
+        try %{ exec -draft s \h + $ <ret> d }
+    }
+}
+
+def -hidden _moon_indent_on_char %{
+    eval -draft -itersel %{
+        # align _else_ statements to start
+        try %{ exec -draft <a-x> <a-k> ^ \h * (else(if)?) $ <ret> <a-\;> <a-?> ^ \h * (if|unless|when) <ret> s \A | \Z <ret> \' <a-&> }
+        # align _when_ to _switch_ then indent
+        try %{ exec -draft <a-x> <a-k> ^ \h * (when) $ <ret> <a-\;> <a-?> ^ \h * (switch) <ret> s \A | \Z <ret> \' <a-&> \' <space> <gt> }
+        # align _catch_ and _finally_ to _try_
+        try %{ exec -draft <a-x> <a-k> ^ \h * (catch|finally) $ <ret> <a-\;> <a-?> ^ \h * (try) <ret> s \A | \Z <ret> \' <a-&> }
+    }
+}
+
+def -hidden _moon_indent_on_new_line %{
+    eval -draft -itersel %{
+        # preserve previous line indent
+        try %{ exec -draft K <a-&> }
+        # filter previous line
+        try %{ exec -draft k : _moon_filter_around_selections <ret> }
+        # copy -- comment prefix and following white spaces
+        try %{ exec -draft k x s ^ \h * \K -- \h * <ret> y j p }
+        # indent after start structure
+        try %{ exec -draft k x <a-k> ^ \h * (class|else(if)?|for|if|switch|unless|when|while|with) \b | ([:=]|[-=]>) $ <ret> j <a-gt> }
+        # deindent after return statements
+        try %{ exec -draft k x <a-k> ^ \h * (break|return) \b <ret> j <a-lt> }
+    }
+}
+
+# Initialization
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+hook global WinSetOption filetype=moon %{
+    addhl ref moon
+
+    hook window InsertEnd  .* -group moon-hooks  _moon_filter_around_selections
+    hook window InsertChar .* -group moon-indent _moon_indent_on_char
+    hook window InsertChar \n -group moon-indent _moon_indent_on_new_line
+
+    set window comment_line_chars '--'
+    set window comment_selection_chars ''
+}
+
+hook global WinSetOption filetype=(?!moon).* %{
+    rmhl moon
+    rmhooks window moon-indent
+    rmhooks window moon-hooks
+}