Re: Making Gnus ask my IMAP username and password after the recent auth-source changes

[Ted Zlatanov <tzz@lifelogs.com>]

On Thu, 24 Feb 2011 20:42:13 -0800 Lars Ingebrigtsen <larsi@gnus.org> wrote: 

LI> Ted Zlatanov <tzz@lifelogs.com> writes:
>> nnimap.el should handle the case where the returned info doesn't have a
>> password.  There are cases where IMAP servers do not require a password,
>> so it would not be appropriate to ask in `nnimap-credentials'.

LI> Hm.  Are there any servers that require just a user name and not a
LI> password?

The problem is that auth-source didn't get a password for whatever
reason.  netrc lines can have no password, for instance (which is the
use case here, in which case the netrc file just has the user, port, and
host).

The issue is that omitting :secret from the search says "any password
will do, including nil".  On *creation* the password will be required by
the netrc backend, but the search results will be happy without it.  

We can add a :required list parameter which would filter out results
that don't contain those tokens.  Then the `auth-source-search' caller
would be guaranteed that any results will have the :required tokens.
Yeah, that would work.

>> (defmacro nnimap-login-password (password)
>> (setq password (if password
>> password
>> (read-passwd "Password: "))))
>> 
>> This is something that Lars will have to do, though.  I don't know that
>> code well enough to say whether it's the right solution; the password
>> prompt should mention the server, user name, and port.  And it may make
>> sense to do this prompting for the user name as well.

LI> Sorry, I don't understand the use case here.  If auth-source didn't
LI> return a password, nnimap should then query for a password?

Yes.  So if we don't add :required to `auth-source-search', nnimap.el
will have to do this.  Let me know which one you like better.

Ted