emacs: Add new option notmuch-search-hide-excluded

[notmuch] / emacs / notmuch-tag.el

diff --git a/emacs/notmuch-tag.el b/emacs/notmuch-tag.el
index 8af09e68b8b42143b958d26a55740ffcdfcc6b89..811018288f373b1df099fa7b791b27a47e313709 100644 (file)
--- a/emacs/notmuch-tag.el
+++ b/emacs/notmuch-tag.el
@@ -159,7 +159,7 @@ place of the tag.
 For example, to replace a tag with another string, simply use
 that string as a formatting expression.  To change the foreground
 of a tag to red, use the expression
-  (propertize tag 'face '(:foreground \"red\"))
+  (propertize tag \\='face \\='(:foreground \"red\"))
 
 See also `notmuch-tag-format-image', which can help replace tags
 with images."
@@ -191,7 +191,7 @@ By default this shows deleted tags with strike-through in red,
 unless strike-through is not available (e.g., emacs is running in
 a terminal) in which case it uses inverse video. To hide deleted
 tags completely set this to
-  '((\".*\" nil))
+  \\='((\".*\" nil))
 
 See `notmuch-tag-formats' for full documentation."
   :group 'notmuch-show
@@ -275,6 +275,11 @@ This can be used with `notmuch-tag-format-image-data'."
   </g>
 </svg>")
 
+;;; track history of tag operations
+(defvar-local notmuch-tag-history nil
+  "Buffer local history of `notmuch-tag' function.")
+(put 'notmuch-tag-history 'permanent-local t)
+
 ;;; Format Handling
 
 (defvar notmuch-tag--format-cache (make-hash-table :test 'equal)
@@ -361,9 +366,9 @@ changed (the normal case) are shown using formats from
 (defcustom notmuch-before-tag-hook nil
   "Hooks that are run before tags of a message are modified.
 
-'tag-changes' will contain the tags that are about to be added or removed as
+`tag-changes' will contain the tags that are about to be added or removed as
 a list of strings of the form \"+TAG\" or \"-TAG\".
-'query' will be a string containing the search query that determines
+`query' will be a string containing the search query that determines
 the messages that are about to be tagged."
   :type 'hook
   :options '(notmuch-hl-line-mode)
@@ -372,9 +377,9 @@ the messages that are about to be tagged."
 (defcustom notmuch-after-tag-hook nil
   "Hooks that are run after tags of a message are modified.
 
-'tag-changes' will contain the tags that were added or removed as
+`tag-changes' will contain the tags that were added or removed as
 a list of strings of the form \"+TAG\" or \"-TAG\".
-'query' will be a string containing the search query that determines
+`query' will be a string containing the search query that determines
 the messages that were tagged."
   :type 'hook
   :options '(notmuch-hl-line-mode)
@@ -458,14 +463,19 @@ from TAGS if present."
   "Use batch tagging if the tagging query is longer than this.
 
 This limits the length of arguments passed to the notmuch CLI to
-avoid system argument length limits and performance problems.")
+avoid system argument length limits and performance problems.
+
+NOTE: this variable is no longer used.")
+
+(make-obsolete-variable 'notmuch-tag-argument-limit nil "notmuch 0.36")
 
-(defun notmuch-tag (query tag-changes)
+(defun notmuch-tag (query tag-changes &optional omit-hist)
   "Add/remove tags in TAG-CHANGES to messages matching QUERY.
 
 QUERY should be a string containing the search-terms.
-TAG-CHANGES is a list of strings of the form \"+tag\" or
-\"-tag\" to add or remove tags, respectively.
+TAG-CHANGES is a list of strings of the form \"+tag\" or \"-tag\"
+to add or remove tags, respectively.  OMIT-HIST disables history
+tracking if non-nil.
 
 Note: Other code should always use this function to alter tags of
 messages instead of running (notmuch-call-notmuch-process \"tag\" ..)
@@ -481,16 +491,30 @@ notmuch-after-tag-hook will be run."
     (notmuch-dlet ((tag-changes tag-changes)
                   (query query))
       (run-hooks 'notmuch-before-tag-hook))
-    (if (<= (length query) notmuch-tag-argument-limit)
-       (apply 'notmuch-call-notmuch-process "tag"
-              (append tag-changes (list "--" query)))
-      ;; Use batch tag mode to avoid argument length limitations
-      (let ((batch-op (concat (mapconcat #'notmuch-hex-encode tag-changes " ")
-                             " -- " query)))
-       (notmuch-call-notmuch-process :stdin-string batch-op "tag" "--batch")))
-    (notmuch-dlet ((tag-changes tag-changes)
-                  (query query))
-      (run-hooks 'notmuch-after-tag-hook))))
+    (with-temp-buffer
+      (insert (concat (mapconcat #'notmuch-hex-encode tag-changes " ") " -- " query))
+      (unless (= 0
+                (notmuch--call-process-region
+                 (point-min) (point-max) notmuch-command t t nil "tag" "--batch"))
+       (notmuch-logged-error "notmuch tag failed" (buffer-string))))
+    (unless omit-hist
+      (push (list :query query :tag-changes tag-changes) notmuch-tag-history)))
+  (notmuch-dlet ((tag-changes tag-changes)
+                (query query))
+    (run-hooks 'notmuch-after-tag-hook)))
+
+(defun notmuch-tag-undo ()
+  "Undo the previous tagging operation in the current buffer. Uses
+buffer local variable `notmuch-tag-history' to determine what
+that operation was."
+  (interactive)
+  (when (null notmuch-tag-history)
+    (error "no further notmuch undo information"))
+  (let* ((action (pop notmuch-tag-history))
+        (query (plist-get action :query))
+        (changes (notmuch-tag-change-list (plist-get action :tag-changes) t)))
+    (notmuch-tag query changes t))
+  (notmuch-refresh-this-buffer))
 
 (defun notmuch-tag-change-list (tags &optional reverse)
   "Convert TAGS into a list of tag changes.