syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"dcx.emit_err(InvalidNumLiteralBasePrefix"}]}
source_snippet:                 dcx.emit_err(InvalidNumLiteralBasePrefix { span, fixed })
context_before:             } else if let Some(fixed) = fix_base_capitalisation(lit.symbol.as_str(), suf) {
context_after:             } else {