emacs/tree: add notmuch-tree-matching-message

[notmuch] / emacs / notmuch-tree.el

diff --git a/emacs/notmuch-tree.el b/emacs/notmuch-tree.el
index 1bcf6cf9b176023c7436fd74a30310f68b0aeae2..e6a6e67fd8048aae34807c11bd7e4c8c5970d554 100644 (file)
--- a/emacs/notmuch-tree.el
+++ b/emacs/notmuch-tree.el
@@ -631,23 +631,35 @@ message will be \"unarchived\", i.e. the tag changes in
   (when (window-live-p notmuch-tree-message-window)
     (notmuch-tree-show-message-in)))
 
+(defun notmuch-tree-goto-matching-message (&optional prev)
+  "Move to the next or previous matching message.
+
+Returns t if there was a next matching message in the thread to show,
+nil otherwise."
+  (let ((dir (if prev -1 nil))
+       (eobfn (if prev #'bobp #'eobp)))
+    (while (and (not (funcall eobfn))
+               (not (notmuch-tree-get-match)))
+      (forward-line dir))
+    (not (funcall eobfn))))
+
+(defun notmuch-tree-matching-message (&optional prev)
+  "Move to the next or previous matching message"
+  (interactive "P")
+  (forward-line (if prev -1 nil))
+  (notmuch-tree-goto-matching-message prev)
+  (when (window-live-p notmuch-tree-message-window)
+    (notmuch-tree-show-message-in)))
+
 (defun notmuch-tree-prev-matching-message ()
   "Move to previous matching message."
   (interactive)
-  (forward-line -1)
-  (while (and (not (bobp)) (not (notmuch-tree-get-match)))
-    (forward-line -1))
-  (when (window-live-p notmuch-tree-message-window)
-    (notmuch-tree-show-message-in)))
+  (notmuch-tree-matching-message t))
 
 (defun notmuch-tree-next-matching-message ()
   "Move to next matching message."
   (interactive)
-  (forward-line)
-  (while (and (not (eobp)) (not (notmuch-tree-get-match)))
-    (forward-line))
-  (when (window-live-p notmuch-tree-message-window)
-    (notmuch-tree-show-message-in)))
+  (notmuch-tree-matching-message))
 
 (defun notmuch-tree-refresh-view (&optional view)
   "Refresh view."