busybox-1.19.3/shell/hush_test/hush-psubst/emptytick.tests - nest-learning-thermostat/5.0.2/busybox - Git at Google

 true;  ``; echo $?
 false; ``; echo $?
 true;  `""`; echo $?
 false; `""`; echo $?
 true;  `     `; echo $?
 false; `     `; echo $?

 true;  $(); echo $?
 false; $(); echo $?
 true;  $(""); echo $?
 false; $(""); echo $?
 true;  $(     ); echo $?
 false; $(     ); echo $?

 exec ''; echo $?
 echo Not reached
	true; ``; echo $?
	false; ``; echo $?
	true; `""`; echo $?
	false; `""`; echo $?
	true; ` `; echo $?
	false; ` `; echo $?

	true; $(); echo $?
	false; $(); echo $?
	true; $(""); echo $?
	false; $(""); echo $?
	true; $( ); echo $?
	false; $( ); echo $?

	exec ''; echo $?
	echo Not reached