GNUPGHOME=. git log --graph --show-signature -n1 plain-nokey >actual &&
grep "^|\\\ merged tag" actual &&
grep "^| | gpg: Signature made" actual &&
- grep "^| | gpg: Can'"'"'t check signature: \(public key not found\|No public key\)" actual
+ grep -E "^| | gpg: Can'"'"'t check signature: (public key not found|No public key)" actual
'
test_expect_success GPG 'log --graph --show-signature for merged tag with bad signature' '