emacs: convert to use format-version 3

Keeping the emacs interface running old format-versions makes it
impossible to test new format-versions or deprecate old ones.

emacs/notmuch-address.el

@@ -317,7 +317,7 @@ execution, CALLBACK is called when harvesting finishes."
 			    (when config-query
 			      (format " and (%s)" config-query)))
 		  from-or-to-me-query))
-	 (args `("address" "--format=sexp" "--format-version=2"
+	 (args `("address" "--format=sexp" "--format-version=3"
 		 ,(if sent "--output=recipients" "--output=sender")
 		 "--deduplicate=address"
 		 ,query)))

emacs/notmuch-mua.el

@@ -176,7 +176,7 @@ mutiple parts get a header."
   (unless (bolp) (insert "\n")))
 
 (defun notmuch-mua-reply (query-string &optional sender reply-all)
-  (let ((args '("reply" "--format=sexp" "--format-version=1"))
+  (let ((args '("reply" "--format=sexp" "--format-version=3"))
 	(process-crypto notmuch-show-process-crypto)
 	reply
 	original)

emacs/notmuch-query.el

@@ -30,7 +30,7 @@ A thread is a forest or list of trees. A tree is a two element
 list where the first element is a message, and the second element
 is a possibly empty forest of replies.
 "
-  (let ((args '("show" "--format=sexp" "--format-version=1")))
+  (let ((args '("show" "--format=sexp" "--format-version=3")))
     (if notmuch-show-process-crypto
 	(setq args (append args '("--decrypt"))))
     (setq args (append args search-terms))

emacs/notmuch-show.el

@@ -1677,9 +1677,10 @@ current thread."
 
 ;; dme: Would it make sense to use a macro for many of these?
 
+;; XXX TODO figure out what to do about multiple filenames
 (defun notmuch-show-get-filename ()
   "Return the filename of the current message."
-  (notmuch-show-get-prop :filename))
+  (car (notmuch-show-get-prop :filename)))
 
 (defun notmuch-show-get-header (header &optional props)
   "Return the named header of the current message, if any."

emacs/notmuch-tree.el

@@ -917,7 +917,7 @@ the same as for the function notmuch-tree."
     (notmuch-tag-clear-cache)
     (let ((proc (notmuch-start-notmuch
 		 "notmuch-tree" (current-buffer) #'notmuch-tree-process-sentinel
-		 "show" "--body=false" "--format=sexp" "--format-version=2"
+		 "show" "--body=false" "--format=sexp" "--format-version=3"
 		 message-arg search-args))
 	  ;; Use a scratch buffer to accumulate partial output.
 	  ;; This buffer will be killed by the sentinel, which

emacs/notmuch.el

@@ -994,7 +994,7 @@ the configured default sort order."
       (save-excursion
 	(let ((proc (notmuch-start-notmuch
 		     "notmuch-search" buffer #'notmuch-search-process-sentinel
-		     "search" "--format=sexp" "--format-version=2"
+		     "search" "--format=sexp" "--format-version=3"
 		     (if oldest-first
 			 "--sort=oldest-first"
 		       "--sort=newest-first")

test/T310-emacs.sh

@@ -1014,7 +1014,7 @@ YYY/notmuch_fail exited with status 1 (see *Notmuch errors* for more details)
 === ERROR ===
 [XXX]
 YYY/notmuch_fail exited with status 1
-command: YYY/notmuch_fail search --format\=sexp --format-version\=2 --sort\=newest-first tag\:inbox
+command: YYY/notmuch_fail search --format\=sexp --format-version\=3 --sort\=newest-first tag\:inbox
 exit status: 1"
 
 test_begin_subtest "Search handles subprocess warnings"

test/T450-emacs-show.sh

@@ -191,7 +191,7 @@ This is an error (see *Notmuch errors* for more details)
 === ERROR ===
 [XXX]
 This is an error
-command: YYY/notmuch_fail show --format\\=sexp --format-version\\=1 --exclude\\=false \\' \\* \\'
+command: YYY/notmuch_fail show --format\\=sexp --format-version\\=3 --exclude\\=false \\' \\* \\'
 exit status: 1
 stderr:
 This is an error