t/t3800-mktag.sh: use test_must_fail rather than '!'

diff --git a/t/t3600-rm.sh b/t/t3600-rm.sh
index 5c001aa4897a02098904f2c492b23690a9e1f6ab..b1ee622ef7887407c93bc55d95827f9eb7a2b951 100755 (executable)
--- a/t/t3600-rm.sh
+++ b/t/t3600-rm.sh
@@ -127,7 +127,7 @@ test_expect_success '"rm" command printed' '
        git add test-file &&
        git commit -m "add file for rm test" &&
        git rm test-file > rm-output &&
-       test `egrep "^rm " rm-output | wc -l` = 1 &&
+       test `grep "^rm " rm-output | wc -l` = 1 &&
        rm -f test-file rm-output &&
        git commit -m "remove file from rm test"
 '