syntax_data: {"ast_node_type":"variable","tokens":[{"end":49,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                 let last_body = &thir[last.body];
context_before:             if prev.span.eq_ctxt(last.span) {
context_after:                 let comma = if matches!(last_body.kind, ExprKind::Block { .. })