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Re: nnimap-user setting?

From: Ted Zlatanov
Subject: Re: nnimap-user setting?
Date: Fri, 15 Apr 2011 15:31:45 -0500
User-agent: Gnus/5.110016 (No Gnus v0.16) Emacs/24.0.50 (gnu/linux)

On Fri, 15 Apr 2011 16:52:45 -0300 Stefan Monnier <address@hidden> wrote: 

>> Maybe it's better to use this new `nnimap-user' backend variable
>> directly.  IOW, if it's set, it should override anything from
>> auth-source, and the auth-source search should not use `nnimap-user',
>> just the host and the ports.  WDYT?

SM> Doesn't sound right: what if you have several accounts on the same
SM> IMAP server?  auto-info needs to know the username in order to find the
SM> right password.

In Gnus, you'd set up multiple secondary servers with the same machine
address and each one has its own nnimap-user.  Then `auth-source-search'
is passed the server name and the machine name, and will use the server
name first.  IOW:

Gnus: server1 = (machine.domain.com, nnimap-user "user1")
      server2 = (machine.domain.com, nnimap-user "user2")

machine server1 password password1
machine server2 password password2

But what bugged you is the auth-source prompting for the user name,
right?  See the attached patch, it will also set
`auth-source-creation-defaults' if `nnimap-user' is set, so you won't be
asked for the user name every time a virtual auth-source entry is
created.  You should only be asked for the password and whether you want
to save the entry (as per `auth-source-save-behavior').


diff --git a/lisp/nnimap.el b/lisp/nnimap.el
index afdea18..5709f92 100644
--- a/lisp/nnimap.el
+++ b/lisp/nnimap.el
@@ -55,6 +55,9 @@
 (nnoo-declare nnimap)
+(defvoo nnimap-user nil
+  "Username to use for authentication to the IMAP server.  Overrides the 
username obtained from auth-source-search.")
 (defvoo nnimap-address nil
   "The address of the IMAP server.")
@@ -287,6 +290,8 @@ textual parts.")
   (let* ((auth-source-creation-prompts
           '((user  . "IMAP user at %h: ")
             (secret . "IMAP password for address@hidden: ")))
+         (auth-source-creation-defaults
+          (when nnimap-user `((user . ,nnimap-user))))
          (found (nth 0 (auth-source-search :max 1
                                            :host address
                                            :port ports
@@ -412,7 +417,8 @@ textual parts.")
                  (setq nnimap-object nil)
                (let ((nnimap-inhibit-logging t))
                  (setq login-result
-                       (nnimap-login (car credentials) (cadr credentials))))
+                       (nnimap-login (or nnimap-user (car credentials))
+                                      (cadr credentials))))
                (if (car login-result)
                     ;; Save the credentials if a save function exists

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