syntax_data: {"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"sm.span_extend_while(only.span,"}]}
source_snippet:                     sm.span_extend_while(only.span, |c| c.is_whitespace() || c == ',')
context_before:                 && let Ok(with_trailing) =
context_after:                 && sm.is_multiline(with_trailing)