I hacked together a asdl parser in boost::spirit a while back that used mustache to generate the C++ AST (which was then used to generate its own AST to make su

I hacked together a asdl parser in boost::spirit a while back that used mustache to generate the C++ AST (which was then used to generate its own AST to make sure it all worked) and can attest the curly braces in the templates were a righteous PITA to get right. If I had to do it all over again I'd probably use the config option and change them to something like '(.', '.)' that doesn't naturally occur in the output language.