GNU bug report logs - #48577
28.0.50; [PATCH] Lexical binding bug in nnimap-process-expiry-targets

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From: Alex Bochannek <alex <at> bochannek.com>
To: 48577 <at> debbugs.gnu.org
Subject: bug#48577: 28.0.50; [PATCH] Lexical binding bug in nnimap-process-expiry-targets
Date: Fri, 21 May 2021 16:43:02 -0700

[Message part 1 (text/plain, inline)]

When using an expiry target mailbox and an IMAP server that does not
support move (Dovecot as per nnimap-quirks), messages will be copied,
but not deleted after expiry.

This was introduced with use of lexical-binding in Gnus and the
difference between set and setq.

The below patch fixes the problem.

[Message part 2 (text/x-patch, inline)]

diff --git a/lisp/gnus/nnimap.el b/lisp/gnus/nnimap.el
index 570be49094..f869f586d9 100644
--- a/lisp/gnus/nnimap.el
+++ b/lisp/gnus/nnimap.el
@@ -1076,7 +1076,9 @@ nnimap-process-expiry-targets
                   "UID COPY %s %S")
                 (nnimap-article-ranges (gnus-compress-sequence articles))
                 (nnimap-group-to-imap (gnus-group-real-name nnmail-expiry-target)))
-               (set (if can-move 'deleted-articles 'articles-to-delete) articles))))
+               (if can-move
+                   (setq deleted-articles articles)
+                 (setq articles-to-delete articles)))))
       t)
      (t
       (dolist (article articles)

[Message part 3 (text/plain, inline)]

-- 
Alex.

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