-dnl is successful then variable is assigned with its output (with newlines
-dnl converted to spaces), and action-if-ok is performed. Otherwise, if
-dnl the command is unsuccessful, then variable is not changed, and
-dnl action-if-failed is performed.
+dnl is successful then variable is assigned with its output, and action-if-ok
+dnl is performed. Otherwise, if the command is unsuccessful, then variable
+dnl is not changed, and action-if-failed is performed.