I just tried this and I get 140 characters for the `.sig` file - to verify it, you do need the first line "untrusted comment: verify with sig.pub" which adds 39

I just tried this and I get 140 characters for the `.sig` file - to verify it, you do need the first line "untrusted comment: verify with sig.pub" which adds 39 to the 100 for the signature (but I suppose since that's a standard part, you could take it as read...)