syntax_data: {"ast_node_type":"function","tokens":[{"end":94,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn span_extend_to_next_char(&self, sp: Span, c: char, accept_newlines: bool) -> Span {
context_before:     /// Extends the given `Span` to just before the next occurrence of `c`.
context_after:         if let Ok(next_source) = self.span_to_next_source(sp) {