gpg for symmetric key encryption: cipher mode of operation?

[David Shaw]

On Apr 3, 2008, at 7:28 AM, Stephen Fromm wrote:
> I'd like to use gpg for symmetric key encryption, but I cannot find  
> anything that tells me the mode of operation (cbc, ecb, etc), either  
> in the usage (e.g., the cipher choices themselves don't have e.g. "- 
> cbc") or in the documentation.

It's "sort of" CFB.  See http://tools.ietf.org/html/rfc4880#section-13.9

David