mail-source.el: Make the imap mail-source's :mailbox handle a list

* lisp/gnus/mail-source.el (mail-source-fetch-imap):
Allow :mailbox to be  a list.

1 files changed, 7 insertions, 4 deletions

diff --git a/lisp/gnus/mail-source.el b/lisp/gnus/mail-source.el
index ad135d4c2ed..cf18fbea17d 100644
--- a/lisp/gnus/mail-source.el
+++ b/lisp/gnus/mail-source.el
@@ -1090,10 +1090,13 @@ This only works when `display-time' is enabled."
       (if (and (imap-open server port stream authentication buf)
                (imap-authenticate
                 user (or (cdr (assoc from mail-source-password-cache))
-                         password) buf)
-               (imap-mailbox-select mailbox nil buf))
+                         password) buf))
+          (let ((mailbox-list (if (listp mailbox) mailbox (list mailbox))))
+            (dolist (mailbox mailbox-list)
+              (when (imap-mailbox-select mailbox nil buf)
           (let ((coding-system-for-write mail-source-imap-file-coding-system)
                 str)
+            (message "Fetching from %s..." mailbox)
             (with-temp-file mail-source-crash-box
               ;; Avoid converting 8-bit chars from inserted strings to
               ;; multibyte.
@@ -1128,8 +1131,8 @@ This only works when `display-time' is enabled."
                fetchflag nil buf))
             (if dontexpunge
                 (imap-mailbox-unselect buf)
-              (imap-mailbox-close nil buf))
-            (imap-close buf))
+              (imap-mailbox-close nil buf)))))
+            (imap-close buf))
         (imap-close buf)
         ;; We nix out the password in case the error
         ;; was because of a wrong password being given.