A bare "." entry becomes a HasSuffix suffix pattern that matches any upstream written in FQDN trailing-dot form (evil.com.), effectively disabling URL signing with one character. Failing test first, fix follows.
A bare "." entry becomes a HasSuffix suffix pattern that matches any upstream written in FQDN trailing-dot form (evil.com.), effectively disabling URL signing with one character. Failing test first, fix follows.