[PATCH v2] emacs: Added "is:<tag>" style completion to notmuch-read-query.

[Charles Celerier]

The notmuch-search-terms man page states that "tag:<tag>" is equivalent
to "is:<tag>". Completion for "is:<tag>" style searches is now supported
in the Emacs interface.

Signed-off-by: Charles Celerier <cceleri at cs.stanford.edu>
---
 emacs/notmuch.el | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/emacs/notmuch.el b/emacs/notmuch.el
index 218486a..d29499c 100644
--- a/emacs/notmuch.el
+++ b/emacs/notmuch.el
@@ -856,12 +856,15 @@ See `notmuch-tag' for information on the format of TAG-CHANGES."
 
 PROMPT is the string to prompt with."
   (lexical-let
+    (( all-tags
+        (mapcar (lambda (tag) (notmuch-escape-boolean-term tag))
+                (process-lines notmuch-command "search" "--output=tags" "*"))))
+  (let
       ((completions
 	(append (list "folder:" "path:" "thread:" "id:" "date:" "from:" "to:"
 		      "subject:" "attachment:")
-		(mapcar (lambda (tag)
-			  (concat "tag:" (notmuch-escape-boolean-term tag)))
-			(process-lines notmuch-command "search" "--output=tags" "*")))))
+		(mapcar (lambda (tag) (concat "tag:" tag)) all-tags)
+		(mapcar (lambda (tag) (concat "is:" tag)) all-tags))))
     (let ((keymap (copy-keymap minibuffer-local-map))
 	  (current-query (case major-mode
 			   (notmuch-search-mode (notmuch-search-get-query))
@@ -884,7 +887,7 @@ PROMPT is the string to prompt with."
       (define-key keymap (kbd "TAB") 'minibuffer-complete)
       (let ((history-delete-duplicates t))
 	(read-from-minibuffer prompt nil keymap nil
-			      'notmuch-search-history current-query nil)))))
+			      'notmuch-search-history current-query nil))))))
 
 (defun notmuch-search-get-query ()
   "Return the current query in this search buffer"
-- 
2.1.2