{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"//!"}]}
//! on particular values of meta-variables. In the following examples, we don't see that if `$d` is
//! False negatives can come from cases where we don't recognize a meta-variable, because it depends
//! instantiated with `$` then `$d z` becomes `$z` in the nested macro definition and is thus a free