Earlier quoted context omitted.
Usernames aren't considered to be privileged data. If you're relying on your usernames being secret, then you're making a big mistake and you should rethink things. Alternatively, generic names. For search, just use grep. "pass | grep whatever" has worked pretty well for me when the tab completion did not. Or would you suggest an alternative approach? I'm open to ideas.
You're right usernames aren't considered privileged, but the list of services and associated usernames is not the kind of information I would want to necessarily make public. The names alone would be more revealing that I care to share. Yeah, 'pass | grep foo' would work for search. I missed the default behaviour.
It's not as if you're putting the names on the internet. They're still on your hard drive, beside your non-encrypted web browser session and history. For this kind of protection, even though it's leaked in a million places (unencrypted SMTP connections between mail servers when you receive the 'welcome to funworld' email, for example), there's disk encryption.