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-rw-r--r--t/test-lib.sh11
1 files changed, 11 insertions, 0 deletions
diff --git a/t/test-lib.sh b/t/test-lib.sh
index d86edcd..87308f5 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -268,6 +268,17 @@ remove_cr () {
tr '\015' Q | sed -e 's/Q$//'
}
+# In some bourne shell implementations, the "unset" builtin returns
+# nonzero status when a variable to be unset was not set in the first
+# place.
+#
+# Use sane_unset when that should not be considered an error.
+
+sane_unset () {
+ unset "$@"
+ return 0
+}
+
test_tick () {
if test -z "${test_tick+set}"
then