syntax_data: {"ast_node_type":"variable","tokens":[{"end":59,"kind":"keyword","start":0,"text":"while"}]}
source_snippet:         while let Some(idx) = find_cr(&src[search_idx..]) {
context_before:         let mut search_idx = 0;
context_after:             if src[search_idx..].get(idx + 1) != Some(&b'\n') {