fixed grammar, grammar injections, wip topiary formatter

tree-sitter/example.crr

@@ -4,8 +4,24 @@ def tricky =
   ab + cd
 
 
-## doc comment
-type [a,b] list = [a,b] List option
+## *_this_*
+## does *_this_* work?
+## video::https://code.org[Cool]
+##
+## a list:
+## * item1
+## * item2
+##
+## === test
+## Double TS language injection goes hard
+##
+## [source,c]
+## ----
+## int main() {
+##   return 0;
+## }
+## ----
+type t List = 'EOL | 'Cons {hd: t, tl: t List}
 
 # comment