1 files changed, 6 insertions, 8 deletions

diff --git a/cdlog.sh b/cdlog.sh
index 911c606..75b1e01 100644
--- a/cdlog.sh
+++ b/cdlog.sh
@@ -1,15 +1,13 @@
 # License at bottom.
 
 # Initialize cdlog the first time.
+
+c1=${c1-}
+
 if [ -z "$c1" ] ; then
-  c9=
-  c8=
-  c7=
-  c6=
-  c5=
-  c4=
-  c3=
-  c2=
+  c9=; c8=; c7=
+  c6=; c5=; c4=
+  c3=; c2=
 fi
 
 # One-letter nicknames for most recent four dirs.