[notmuch] [PATCH] Make search filters handle disjunctive queries.

[Jed Brown]

notmuch-search-filter now accepts an arbitrary query and will group if
necessary so that we get

  tag:inbox AND (gravy OR biscuits)

instead of the former

  tag:inbox AND gravy OR biscuits

Signed-off-by: Jed Brown <jed at 59A2.org>
---
 notmuch.el |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/notmuch.el b/notmuch.el
index 2509651..0bf82f5 100644
--- a/notmuch.el
+++ b/notmuch.el
@@ -995,6 +995,8 @@ thread from that buffer can be show when done with this one)."
 (defvar notmuch-search-oldest-first t
   "Show the oldest mail first in the search-mode")
 
+(defvar notmuch-search-disjunctive-regexp      "\\<[oO][rR]\\>")
+
 (defun notmuch-search-scroll-up ()
   "Move forward through search results by one window's worth."
   (interactive)
@@ -1327,7 +1329,8 @@ search."
 Runs a new search matching only messages that match both the
 current search results AND the additional query string provided."
   (interactive "sFilter search: ")
-  (notmuch-search (concat notmuch-search-query-string " and " query) notmuch-search-oldest-first))
+  (let ((grouped-query (if (string-match-p notmuch-search-disjunctive-regexp query) (concat "( " query " )") query)))
+    (notmuch-search (concat notmuch-search-query-string " and " grouped-query) notmuch-search-oldest-first)))
 
 (defun notmuch-search-filter-by-tag (tag)
   "Filter the current search results based on a single tag.
-- 
1.6.5.3