[PATCH v2 7/7] emacs: make emacs use message-ids for tagging

[markwalters1009]

From: Mark Walters <markwalters1009 at gmail.com>

This makes emacs use the new --queries=true in search mode and use
this for tagging.  This fixes the race condition in tagging from
search mode so mark the tests fixed.
---
 emacs/notmuch.el |   28 +++++++++++++++++++++++++---
 test/emacs       |    2 --
 2 files changed, 25 insertions(+), 5 deletions(-)

diff --git a/emacs/notmuch.el b/emacs/notmuch.el
index 64b9474..6e8ef83 100644
--- a/emacs/notmuch.el
+++ b/emacs/notmuch.el
@@ -473,7 +473,8 @@ BEG."
   (let (output)
     (notmuch-search-foreach-result beg end
       (lambda (pos)
-	(push (plist-get (notmuch-search-get-result pos) property) output)))
+	(let ((value (plist-get (notmuch-search-get-result pos) property)))
+	  (when value (push value output)))))
     output))
 
 (defun notmuch-search-find-thread-id (&optional bare)
@@ -483,6 +484,7 @@ If BARE is set then do not prefix with \"thread:\""
   (let ((thread (plist-get (notmuch-search-get-result) :thread)))
     (when thread (concat (unless bare "thread:") thread))))
 
+
 (defun notmuch-search-find-thread-id-region (beg end)
   "Return a list of threads for the current region"
   (mapcar (lambda (thread) (concat "thread:" thread))
@@ -492,6 +494,23 @@ If BARE is set then do not prefix with \"thread:\""
   "Return a search string for threads for the current region"
   (mapconcat 'identity (notmuch-search-find-thread-id-region beg end) " or "))
 
+;; The following two functions are similar to the previous two but
+;; they only match messages that were in the the thread when the
+;; initial search was run. This means that they can be used where it
+;; is important to avoid races: e.g. when tagging.
+(defun notmuch-search-find-queries-region (beg end &optional only-matching)
+  (interactive)
+  "Return a list of queries for the current region"
+  (append (notmuch-search-properties-in-region :matching_msg_query beg end)
+	  (unless only-matching
+	    (notmuch-search-properties-in-region :nonmatching_msg_query beg end))))
+
+(defun notmuch-search-find-queries-region-search (beg end &optional only-matching)
+  "Return a search string for messages in threads in the current region"
+  (mapconcat 'identity
+	     (notmuch-search-find-queries-region beg end only-matching)
+	     " or "))
+
 (defun notmuch-search-find-authors ()
   "Return the authors for the current thread"
   (plist-get (notmuch-search-get-result) :authors))
@@ -575,7 +594,7 @@ and will also appear in a buffer named \"*Notmuch errors*\"."
 
 (defun notmuch-search-tag-region (beg end &optional tag-changes)
   "Change tags for threads in the given region."
-  (let ((search-string (notmuch-search-find-thread-id-region-search beg end)))
+  (let ((search-string (notmuch-search-find-queries-region-search beg end)))
     (setq tag-changes (funcall 'notmuch-tag search-string tag-changes))
     (notmuch-search-foreach-result beg end
       (lambda (pos)
@@ -851,7 +870,9 @@ non-authors is found, assume that all of the authors match."
 
 See `notmuch-tag' for information on the format of TAG-CHANGES."
   (interactive)
-  (apply 'notmuch-tag notmuch-search-query-string tag-changes))
+  (apply 'notmuch-tag (notmuch-search-find-queries-region-search
+		       (point-min) (point-max) t)
+	 tag-changes))
 
 (defun notmuch-search-buffer-title (query)
   "Returns the title for a buffer with notmuch search results."
@@ -948,6 +969,7 @@ Other optional parameters are used as follows:
 		     "notmuch-search" buffer
 		     notmuch-command "search"
 		     "--format=json"
+		     "--output=with-queries"
 		     (if oldest-first
 			 "--sort=oldest-first"
 		       "--sort=newest-first")
diff --git a/test/emacs b/test/emacs
index 3788439..132768f 100755
--- a/test/emacs
+++ b/test/emacs
@@ -123,7 +123,6 @@ output=$(notmuch search $os_x_darwin_thread | notmuch_search_sanitize)
 test_expect_equal "$output" "thread:XXX   2009-11-18 [4/4] Jjgod Jiang, Alexander Botero-Lowry; [notmuch] Mac OS X/Darwin compatibility issues (inbox unread)"
 
 test_begin_subtest "Tag all matching messages from search view"
-test_subtest_known_broken
 notmuch tag +test-tag-race from:cworth
 test_emacs "(notmuch-search \"tag:test-tag-race\")
 	    (notmuch-test-wait)"
@@ -135,7 +134,6 @@ notmuch tag -test-tag-race '*'
 notmuch tag -test-tag-race-2 '*'
 
 test_begin_subtest "Change tags from search view: another message arriving after thread lookup"
-test_subtest_known_broken
 typsos_id="878we4qdqf.fsf at yoom.home.cworth.org"
 typsos_thread=$(notmuch search --output=threads id:$typsos_id)
 test_emacs "(notmuch-search \"$typsos_thread\")
-- 
1.7.9.1