syntax_data: {"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"text:"}]}
source_snippet:     text: "01234\u{07}6789\nbcdef0123456789abcdef",
context_before:     case: newline_and_control_char_in_same_chunk,
context_after:     lines: vec![0, 11],