[PATCH v4 1/2] emacs: new command notmuch-tree-filter

Subject: [PATCH v4 1/2] emacs: new command notmuch-tree-filter

Date: Sun, 22 Aug 2021 01:50:48 +0100

To: notmuch@notmuchmail.org

Cc: jao

From: jao

This command is analogous to notmuch-filter, but is defined on tree
mode buffers.
---
 devel/emacs-keybindings.org |  2 +-
 doc/notmuch-emacs.rst       |  3 +++
 emacs/notmuch-tree.el       | 16 ++++++++++++++++
 3 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/devel/emacs-keybindings.org b/devel/emacs-keybindings.org
index f7df3040..0ff4fdf5 100644
--- a/devel/emacs-keybindings.org
+++ b/devel/emacs-keybindings.org
@@ -12,7 +12,7 @@
 | i         |                                        |                                                       |                                         |
 | j         | notmuch-jump-search                    | notmuch-jump-search                                   | notmuch-jump-search                     |
 | k         | notmuch-tag-jump                       | notmuch-tag-jump                                      | notmuch-tag-jump                        |
-| l         | notmuch-search-filter                  | notmuch-show-filter-thread                            |                                         |
+| l         | notmuch-search-filter                  | notmuch-show-filter-thread                            | notmuch-tree-filter                     |
 | m         | notmuch-mua-new-mail                   | notmuch-mua-new-mail                                  | notmuch-mua-new-mail                    |
 | n         | notmuch-search-next-thread             | notmuch-show-next-open-message                        | notmuch-tree-next-matching-message      |
 | o         | notmuch-search-toggle-order            |                                                       | notmuch-tree-toggle-order               |
diff --git a/doc/notmuch-emacs.rst b/doc/notmuch-emacs.rst
index 952fe2a5..5accfa60 100644
--- a/doc/notmuch-emacs.rst
+++ b/doc/notmuch-emacs.rst
@@ -302,6 +302,9 @@ tags.
 ``o`` ``notmuch-tree-toggle-order``
    |docstring::notmuch-tree-toggle-order|
 
+``l`` ``notmuch-tree-filter``
+   Filter or LIMIT the current search results based on an additional query string
+
 ``g`` ``=``
     Refresh the buffer
 
diff --git a/emacs/notmuch-tree.el b/emacs/notmuch-tree.el
index ef1ca4c5..f2938330 100644
--- a/emacs/notmuch-tree.el
+++ b/emacs/notmuch-tree.el
@@ -349,6 +349,7 @@ then NAME behaves like CMD."
     (define-key map "r" 'notmuch-tree-reply-sender)
     (define-key map "R" 'notmuch-tree-reply)
     (define-key map "V" 'notmuch-tree-view-raw-message)
+    (define-key map "l" 'notmuch-tree-filter)
 
     ;; The main tree view bindings
     (define-key map (kbd "RET") 'notmuch-tree-show-message)
@@ -1168,6 +1169,21 @@ The arguments are:
   (interactive)
   (notmuch-tree query query-context target buffer-name open-target t))
 
+(defun notmuch-tree-filter (query)
+  "Filter or LIMIT the current search results based on an additional query string.
+
+Runs a new tree search matching only messages that match both the
+current search results AND the additional query string provided."
+  (interactive (list (notmuch-read-query "Filter search: ")))
+  (let ((notmuch-show-process-crypto (notmuch-tree--message-process-crypto))
+	(grouped-query (notmuch-group-disjunctive-query-string query))
+	(grouped-original-query (notmuch-group-disjunctive-query-string
+				 (notmuch-tree-get-query))))
+    (notmuch-tree-close-message-window)
+    (notmuch-tree (if (string= grouped-original-query "*")
+		      grouped-query
+		    (concat grouped-original-query " and " grouped-query)))))
+
 ;;; _
 
 (provide 'notmuch-tree)
-- 
2.33.0
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