syntax_data: {"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"'@'"}]}
source_snippet:                 '@' => self.path.temp_buf.push_str("$SP$"),
context_before:                 // Escape these with $ sequences
context_after:                 '*' => self.path.temp_buf.push_str("$BP$"),