t2300: use documented technique to invoke git-sh-setup

diff --git a/git-filter-branch.sh b/git-filter-branch.sh
index 6b8b6a4f26a60c325a2c76e1d5b0e747b9d1d99b..cb9d2022cc93f1f371264098828a52e0d6bf1d7c 100755 (executable)
--- a/git-filter-branch.sh
+++ b/git-filter-branch.sh
@@ -473,7 +473,7 @@ if [ "$filter_tag_name" ]; then
                                git mktag) ||
                                die "Could not create new tag object for $ref"
                        if git cat-file tag "$ref" | \
-                          grep '^-----BEGIN PGP SIGNATURE-----' >/dev/null 2>&1
+                          sane_grep '^-----BEGIN PGP SIGNATURE-----' >/dev/null 2>&1
                        then
                                warn "gpg signature stripped from tag object $sha1t"
                        fi