[PATCH v5 10/12] emacs: accept empty tag list in `notmuch-tag'

diff --git a/b6/59b9cf63df348b312be75ba7df5ea9a763b975 b/b6/59b9cf63df348b312be75ba7df5ea9a763b975
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+++ b/b6/59b9cf63df348b312be75ba7df5ea9a763b975
@@ -0,0 +1,95 @@
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+From: Dmitry Kurochkin <dmitry.kurochkin@gmail.com>\r
+To: notmuch@notmuchmail.org\r
+Subject: [PATCH v5 10/12] emacs: accept empty tag list in `notmuch-tag'\r
+Date: Sun,  5 Feb 2012 11:13:51 +0400\r
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+\r
+Since `notmuch-tag' is a non-interactive function and hence is meant\r
+to be invoked programmatically, it should accept zero tags.  Also, the\r
+tagging operations (bound to "*", "+", "-") would accept empty input\r
+without an error.\r
+---\r
+ emacs/notmuch.el |   10 +++++-----\r
+ 1 files changed, 5 insertions(+), 5 deletions(-)\r
+\r
+diff --git a/emacs/notmuch.el b/emacs/notmuch.el\r
+index b06d8a1..0ffdf9c 100644\r
+--- a/emacs/notmuch.el\r
++++ b/emacs/notmuch.el\r
+@@ -548,15 +548,15 @@ messages instead of running (notmuch-call-notmuch-process \"tag\" ..)\r
+ directly, so that hooks specified in notmuch-before-tag-hook and\r
+ notmuch-after-tag-hook will be run."\r
+   ;; Perform some validation\r
+-  (when (null tags) (error "No tags given"))\r
+   (mapc (lambda (tag)\r
+         (unless (string-match-p "^[-+]\\S-+$" tag)\r
+           (error "Tag must be of the form `+this_tag' or `-that_tag'")))\r
+       tags)\r
+-  (run-hooks 'notmuch-before-tag-hook)\r
+-  (apply 'notmuch-call-notmuch-process\r
+-       (append (list "tag") tags (list "--" query)))\r
+-  (run-hooks 'notmuch-after-tag-hook))\r
++  (unless (null tags)\r
++    (run-hooks 'notmuch-before-tag-hook)\r
++    (apply 'notmuch-call-notmuch-process "tag"\r
++         (append tags (list "--" query)))\r
++    (run-hooks 'notmuch-after-tag-hook)))\r
+ \r
+ (defcustom notmuch-before-tag-hook nil\r
+   "Hooks that are run before tags of a message are modified.\r
+-- \r
+1.7.9\r
+\r