strbuf: add strbuf_tolower function

diff --git a/t/t7001-mv.sh b/t/t7001-mv.sh
index c8ff9115ec51ded977bcdcef0346b9a7dbaca2e6..54d78079e83d7d02f69035d3bf3999084f61834a 100755 (executable)
--- a/t/t7001-mv.sh
+++ b/t/t7001-mv.sh
@@ -447,8 +447,7 @@ test_expect_success 'checking out a commit before submodule moved needs manual u
        git mv sub sub2 &&
        git commit -m "moved sub to sub2" &&
        git checkout -q HEAD^ 2>actual &&
-       echo "warning: unable to rmdir sub2: Directory not empty" >expected &&
-       test_i18ncmp expected actual &&
+       test_i18ngrep "^warning: unable to rmdir sub2:" actual &&
        git status -s sub2 >actual &&
        echo "?? sub2/" >expected &&
        test_cmp expected actual &&