syntax_data: {"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"format!(\"`{}`"}]}
source_snippet:             format!("`{}` and `{}`", head.join("`, `"), cx.print_witness_pat(tail))
context_before:             let head: Vec<_> = head.iter().map(pat_to_str).collect();
context_after:         }