syntax_data: {"ast_node_type":"variable","tokens":[{"end":80,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let html_diff = re.replace_all(&raw_diff, |captures: &regex::Captures<'_>| {
context_before:     let mut inside_font_tag = false;
context_after:         let mut ret = String::new();