Show additional details of signing OpenPGP-key in compose menu.
It would help me to identify keys if additionally to the fingerprint, more details of the OpenPGP-key would be shown in the compose menu.
Fingerprints are the correct technical and authoritative identifier for a key. But they are not easy to remember for humans. Many people (including me) only memorize a part of the fingerprint, and use that fragment together with the UIDs, and maybe the creation or expiration dates, to identify a key.
In order to help with that mutt could show more details of the signing key.
As an example: in the project Schleuder, the short representation of a key includes the fingerprint, the first UID, the creation date, and two optional "flags" in case a key is expired or revoked.[1] I like that.
E.g.:
0xB3D190D5235C74E1907EACFE898F2C91E2E6E1F3 "Schleuder <team@schleuder.org>" 2016-09-27
Unfortunately I'm not fluent in C, so I can't help with coding.
[1] To be exact: That is the format of the future short representation; the current one is slightly different. See this issue for details if you're interested.