config: use git_config_parse_key() in git_config_parse_parameter()

diff --git a/t/t7004-tag.sh b/t/t7004-tag.sh
index f9b7d79af571ab2c377edeb7d46c1605078a4e02..8b0f71a2ac15d65f977b0daa2a53ad47b64a043a 100755 (executable)
--- a/t/t7004-tag.sh
+++ b/t/t7004-tag.sh
@@ -1202,10 +1202,17 @@ test_expect_success GPG,RFC1991 \
 # try to sign with bad user.signingkey
 git config user.signingkey BobTheMouse
 test_expect_success GPG \
-       'git tag -s fails if gpg is misconfigured' \
+       'git tag -s fails if gpg is misconfigured (bad key)' \
        'test_must_fail git tag -s -m tail tag-gpg-failure'
 git config --unset user.signingkey
 
+# try to produce invalid signature
+test_expect_success GPG \
+       'git tag -s fails if gpg is misconfigured (bad signature format)' \
+       'test_config gpg.program echo &&
+        test_must_fail git tag -s -m tail tag-gpg-failure'
+
+
 # try to verify without gpg:
 
 rm -rf gpghome