syntax_data: {"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"\"show"}]}
source_snippet:         "show macro backtraces (default: no)"),
context_before:     macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
context_after:     macro_stats: bool = (false, parse_bool, [UNTRACKED],