coccinelle/empty-or-dash.cocci - systemd - Git at Google

 @@
 expression s;
 @@
 - (isempty(s) || streq(s, "-"))
 + empty_or_dash(s)
	@@
	expression s;
	@@
	- (isempty(s) \|\| streq(s, "-"))
	+ empty_or_dash(s)