zone.lisp: Fix default output directory.

[zone] / zone.lisp

diff --git a/zone.lisp b/zone.lisp
index 8d35c09..f497037 100644 (file)
--- a/zone.lisp
+++ b/zone.lisp
@@ -207,8 +207,12 @@
   records)
 
 (export '*zone-output-path*)
-(defvar *zone-output-path* *default-pathname-defaults*
-  "Pathname defaults to merge into output files.")
+(defvar *zone-output-path* nil
+  "Pathname defaults to merge into output files.
+
+   If this is nil then use the prevailing `*default-pathname-defaults*'.
+   This is not the same as capturing the `*default-pathname-defaults*' from
+   load time.")
 
 (export '*preferred-subnets*)
 (defvar *preferred-subnets* nil
@@ -221,7 +225,7 @@
   "Choose a file name for a given ZONE and TYPE."
   (merge-pathnames (make-pathname :name (string-downcase zone)
                                  :type (string-downcase type))
-                  *zone-output-path*))
+                  (or *zone-output-path* *default-pathname-defaults*)))
 
 (export 'zone-preferred-subnet-p)
 (defun zone-preferred-subnet-p (name)