when i run `gpg --with-colons --show-keys` on a revocation certificate, there is no output, but i get these warnings on `logger-fd`:
```
gpg: key A57E4460FD08E224: no public key - can't apply revocation certificate
gpg: Total number processed: 1
```
I was hoping for output on stdout like the following:
```
pub:r:3072:1:A57E4460FD08E224:1528750755:1591822755::-:::sc::::::23::0:
fpr:::::::::473003A5FBBB54BC4C717B7CA57E4460FD08E224:
rev:!::1:A57E4460FD08E224:1528750759::::this is a test:20x::473003A5FBBB54BC4C717B7CA57E4460FD08E224:::10:
uid:r::::1528750755::57365DB6DDE0B8F4214314FA09B587BAF1B339F8::this is a test::::::::::0:
sig:!::1:A57E4460FD08E224:1528750755::::this is a test:13x::473003A5FBBB54BC4C717B7CA57E4460FD08E224:::10:
sub:r:3072:1:E2A399EF68CCA783:1528750755::::::e::::::23:
fpr:::::::::BB3C34E09A6748F38A3F5D2DE2A399EF68CCA783:
sig:!::1:A57E4460FD08E224:1528750755::::this is a test:18x::473003A5FBBB54BC4C717B7CA57E4460FD08E224:::10:
```
where the revocation signature would show.
I've also tried:
```
gpg --dry-run --with-colons --import-options import-show --with-sig-list --import
```
and that also fails in the same way as `--show-keys`: two lines to `logger-fd` and nothing to stdout.
note: T4017 points out that `--show-keys` on a revocation certificate isn't actually `--dry-run`. this is a distinct problem from the issue reported here.