How to do ref mut args?

[Boscop]

How can I mark an arg as ref mut?

defmac!(send ref mut slf, msg => { let m = msg; slf.send(m); });

I get this error:

when trying to call this macro with self as first arg in a method that gets self as &mut.

E.g. send!(self, Msg::Search(self.search_input.clone()));

[bluss]

There seems to be multiple things going on there, there is no problem with using ref mut in general with the macro. In your case you want to borrow self mutably more than once I think? Because self is the first argument to send! you will get something that's equivalent to match self { slf => { ... } } which borrows self mutably for the whole expression.