bug#29692: 24.5; gnus does not remember password change for imap

[Ted Zlatanov]

On Wed, 13 Dec 2017 08:52:27 -0800 Trey Jackson <trey_jackson@mentor.com> 
wrote: 

TJ> this patch changes the code to check the password as well.
TJ> the cache ends up storing two passwords (in this case), but it works b/c
TJ> when reading the cache the newest password is used:

TJ> /usr/local/share/emacs/24.5/lisp/gnus/mail-source.el.gz 
~/scratch/mail-source.el
TJ> --- -       2017-12-13 08:47:13.425421767 -0800
TJ> +++ /home/tjackson/scratch/mail-source.el   2017-12-13 08:44:51.098076000 
-0800
TJ> @@ -1102,7 +1102,7 @@
TJ>           ;; remember password
TJ>           (with-current-buffer buf
TJ>             (when (and imap-password
TJ> -                      (not (assoc from mail-source-password-cache)))
TJ> +                      (not (member (cons from imap-password) 
mail-source-password-cache)))
TJ>               (push (cons from imap-password) mail-source-password-cache)))
TJ>           ;; if predicate is nil, use all uids
TJ>           (dolist (uid (imap-search (or predicate "1:*") buf))

Thank you, applied in the emacs-26 branch.

Ted