From 8b7c09c66bbae35c52150a5ee81b94a82b2b3054 Mon Sep 17 00:00:00 2001
From: David Edmondson <dme@dme.org>
Date: Wed, 3 Feb 2021 09:10:20 +0000
Subject: [PATCH] emacs: When completing tags, offer each tag once

When prompting for one or more tags to add or remove to/from one or
more threads, ensure that the set of tags offered for completion
contains no duplicates.

Some completion packages (e.g. selectrum) will include every member of
the offered list, resulting in the same tag being indicated as a
possibility several times.
---
 emacs/notmuch.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/emacs/notmuch.el b/emacs/notmuch.el
index 26efcccd..6d37c623 100644
--- a/emacs/notmuch.el
+++ b/emacs/notmuch.el
@@ -577,7 +577,7 @@ thread."
     (notmuch-search-foreach-result beg end
       (lambda (pos)
 	(setq output (append output (notmuch-search-get-tags pos)))))
-    output))
+    (delete-dups output)))
 
 (defun notmuch-search-interactive-tag-changes (&optional initial-input)
   "Prompt for tag changes for the current thread or region.