tests/format/option-bool/element.bst - buildstream - Git at Google

 kind: autotools
 variables:
   thepony: "not pony"
   (?):
   - pony:
       thepony: "a pony"
	kind: autotools
	variables:
	thepony: "not pony"
	(?):
	- pony:
	thepony: "a pony"