--export-filter not working

[Felix Mayr]

Hello all,

so I try to create a file with my public keys and want to exclude some 
authorization keys. `--export-filter` should do the job if I understand 
correctly, but it doesn't work. (platform: Fedora 35/gpg 2.3.4)

Just using the command here to try filter out encryption-keys doesn't 
produce anything usable: 
https://dev.gnupg.org/rG86b64876bef0d8c4be8e309fcf3e2ce21e65a947

Notably, importing the resulting file on another machine, there are no 
subkeys at all (gpg --list-keys)!

Am I doing/understanding something wrong?


Best wishes

Felix