[PATCH] emacs-show: open excluded matches if no other matches

[Mark Walters <markwalters1009@gmail.com>]

Currently emacs show does not open matching but excluded
messages. This is normally the desired behaviour but is probably not
ideal if only excluded messages match. This patch opens all the
matching (necessarily excluded) messages in this case and goes to the
first one.
---
 emacs/notmuch-show.el |   14 ++++++++++++--
 1 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index 4a60631..bd4ba0f 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -1608,6 +1608,11 @@ to show, nil otherwise."
 	  (notmuch-show-message-adjust))
       (goto-char (point-max)))))
 
+(defun notmuch-show-open-if-matched ()
+  "Open a message if it is matched (whether or not excluded)."
+  (let ((props (notmuch-show-get-message-properties)))
+    (notmuch-show-message-visible props (plist-get props :match))))
+
 (defun notmuch-show-goto-first-wanted-message ()
   "Move to the first open message and mark it read"
   (goto-char (point-min))
@@ -1615,9 +1620,14 @@ to show, nil otherwise."
       (notmuch-show-mark-read)
     (notmuch-show-next-open-message))
   (when (eobp)
+    ;; There are no matched non-excluded messages so open all matched
+    ;; (necessarily excluded) messages and go to the first.
+    (notmuch-show-mapc 'notmuch-show-open-if-matched)
+    (force-window-update)
     (goto-char (point-min))
-    (unless (notmuch-show-get-prop :match)
-      (notmuch-show-next-matching-message))))
+    (if (notmuch-show-message-visible-p)
+	(notmuch-show-mark-read)
+      (notmuch-show-next-open-message))))
 
 (defun notmuch-show-previous-open-message ()
   "Show the previous open message."
-- 
1.7.9.1