Macro suzy::tweak

macro_rules! tweak {
    ($default:expr) => { ... };
    ($value:literal; $default:expr) => { ... };
}

A version of the tweak! macro from the crate inline_tweak, but designed to work within Suzy’s watch system.

Using this macro in a watch closure will cause the closure to be re-run periodically, so that a tweaked value in the parsed source code can be observed.

This macro is available if the inline_tweak feature is enabled for Suzy.