Do not shift an empty list of arguments

[audio-cdr-video.git] / cdr-dvdrw-tools / dvd+rw-tools / dvdrec-data

diff --git a/cdr-dvdrw-tools/dvd+rw-tools/dvdrec-data b/cdr-dvdrw-tools/dvd+rw-tools/dvdrec-data
index dc3f541b0970155e64606dcba3f3c1af8f455afa..4b45cd1df1d07df0752cd1aae2ca0a909e590421 100755 (executable)
--- a/cdr-dvdrw-tools/dvd+rw-tools/dvdrec-data
+++ b/cdr-dvdrw-tools/dvd+rw-tools/dvdrec-data
@@ -4,8 +4,10 @@
 
 . .config
 
-label="$1"
-shift
+if [ -n "$label" ]; then
+   label="$1"
+   shift
+fi
 
 if [ -z "$label" ]; then
    label="`guess_label.py`"