* cmp/cmp-detects-difference: Simplify return code negation.
* false/false-returns-failure: Likewise.
* tar/tar-demands-at-least-one-ctx: Likewise.
* tar/tar-demands-at-most-one-ctx: Likewise.
diff --git a/testsuite/tar/tar-demands-at-least-one-ctx b/testsuite/tar/tar-demands-at-least-one-ctx
index 3ac58e8..85e7f60 100644
--- a/testsuite/tar/tar-demands-at-least-one-ctx
+++ b/testsuite/tar/tar-demands-at-least-one-ctx
@@ -1,5 +1 @@
-if busybox tar v; then
- return 1
-else
- return 0
-fi
+! busybox tar v