Hi,

This patch fixes the bug originally reported in
https://list.orgmode.org/59e02fb6.1462370a.fffe8.5...@mx.google.com/
with the following reproducing recipe. The bug still exists in latest
org-mode.

> To reproduce, take the following org file:
>
> ---8<---
> * Foo
>   :PROPERTIES:
>   :CATEGORY: foo
>   :END:
> ** TODO Foo todo one
>    DEADLINE: <2017-10-13 Fri>
>    - foo 1
>
> * Bar
>   :PROPERTIES:
>   :CATEGORY: bar
>   :END:
> ** TODO Bar todo one
>    DEADLINE: <2017-10-13 Fri>
>    - bar 1
> --->8---
>
> And the following elisp file to setup a minimal environment:
>
> ---8<---
> (require 'org)
> (setq org-agenda-files (list (expand-file-name "repro.org")))
> (setq org-agenda-sticky t)
> (setq org-agenda-custom-commands
>       '(("f" "foo"
>          ((agenda "" ())
>           (tags-todo "+CATEGORY=\"foo\"" ()))
>          ((org-agenda-category-filter-preset '("+foo"))))
>
>         ("b" "bar"
>          ((agenda "" ())
>           (tags-todo "+CATEGORY=\"bar\"" ()))
>          ((org-agenda-category-filter-preset '("+bar"))))))
>
> (global-set-key (kbd "C-c a") #'org-agenda)
> --->8---
>
> Then run (something like):
>
> emacs -nw -Q -L ~/git/org-mode/lisp -l repro.el repro.org
>
> Followed by:
>
> C-c a f
> C-c a b
> C-x o
> r
>
> I would expect pressing `r' in the `*Org Agenda(f)*' buffer would
> keep the original `org-agenda-category-filter-preset' and that the
> preset in `*Org Agenda(b)*' should have no bearing on it.  But, as you
> can (probably) see from the mode line, the filter is set to "+bar", and
> refreshing the buffer causes all the TODOs to be lost because it now has
> the wrong filter.

Because the filter presets are stored as symbol properties, they
cannot be used with multiple sticky agenda buffers. The patch fixes
the problem by adding a new variable `org-agenda-filters-preset' for
getting and setting per-buffer filter presets. I have signed the FSF
copyright assignment paper.

Best,
Hui

>From 4fc03d86ab1df761ab26655f043b05b449b68716 Mon Sep 17 00:00:00 2001
From: Liu Hui <liuhui1...@gmail.com>
Date: Tue, 4 Oct 2022 11:12:41 +0800
Subject: [PATCH] lisp/org-agenda.el: Fix filter preset problem for sticky
 agenda

* lisp/org-agenda.el (org-agenda-local-vars):
(org-agenda-filters-preset): Add a new variable
`org-agenda-filters-preset' for storing per-buffer filter presets.
(org-agenda-filter-any):
(org-agenda-prepare):
(org-agenda-finalize):
(org-agenda-redo):
(org-agenda-filter-by-tag):
(org-agenda-filter-make-matcher):
(org-agenda-set-mode-name):
(org-agenda-reapply-filters): Use `org-agenda-filters-preset' for
getting and setting per-buffer filter presets, rather than modifying
the global symbol property.
---
 lisp/org-agenda.el | 91 ++++++++++++++++++++--------------------------
 1 file changed, 40 insertions(+), 51 deletions(-)

diff --git a/lisp/org-agenda.el b/lisp/org-agenda.el
index 2b56dd0fb..7ee0a6ad1 100644
--- a/lisp/org-agenda.el
+++ b/lisp/org-agenda.el
@@ -2276,6 +2276,7 @@ When nil, `q' will kill the single agenda buffer."
     org-agenda-top-headline-filter
     org-agenda-regexp-filter
     org-agenda-effort-filter
+    org-agenda-filters-preset
     org-agenda-markers
     org-agenda-last-search-view-search-was-boolean
     org-agenda-last-indirect-buffer
@@ -3808,6 +3809,9 @@ the entire agenda view.  In a block agenda, it will not work reliably to
 define a filter for one of the individual blocks.  You need to set it in
 the global options and expect it to be applied to the entire view.")
 
+(defvar org-agenda-filters-preset nil
+  "Preset of filters, which becomes buffer-local in org-agenda buffers.")
+
 (defconst org-agenda-filter-variables
   '((category . org-agenda-category-filter)
     (tag . org-agenda-tag-filter)
@@ -3818,7 +3822,7 @@ the global options and expect it to be applied to the entire view.")
   "Is any filter active?"
   (cl-some (lambda (x)
 	     (or (symbol-value (cdr x))
-		 (get :preset-filter x)))
+                 (assoc-default (car x) org-agenda-filters-preset)))
 	   org-agenda-filter-variables))
 
 (defvar org-agenda-category-filter-preset nil
@@ -3927,10 +3931,6 @@ FILTER-ALIST is an alist of filters we need to apply when
 			    (cat . ,org-agenda-category-filter))))))
     (if (org-agenda-use-sticky-p)
 	(progn
-	  (put 'org-agenda-tag-filter :preset-filter nil)
-	  (put 'org-agenda-category-filter :preset-filter nil)
-	  (put 'org-agenda-regexp-filter :preset-filter nil)
-	  (put 'org-agenda-effort-filter :preset-filter nil)
 	  ;; Popup existing buffer
 	  (org-agenda-prepare-window (get-buffer org-agenda-buffer-name)
 				     filter-alist)
@@ -3938,14 +3938,6 @@ FILTER-ALIST is an alist of filters we need to apply when
 	  (or org-agenda-multi (org-agenda-fit-window-to-buffer))
 	  (throw 'exit "Sticky Agenda buffer, use `r' to refresh"))
       (setq org-todo-keywords-for-agenda nil)
-      (put 'org-agenda-tag-filter :preset-filter
-	   org-agenda-tag-filter-preset)
-      (put 'org-agenda-category-filter :preset-filter
-	   org-agenda-category-filter-preset)
-      (put 'org-agenda-regexp-filter :preset-filter
-	   org-agenda-regexp-filter-preset)
-      (put 'org-agenda-effort-filter :preset-filter
-	   org-agenda-effort-filter-preset)
       (if org-agenda-multi
 	  (progn
 	    (setq buffer-read-only nil)
@@ -3970,7 +3962,12 @@ FILTER-ALIST is an alist of filters we need to apply when
 	(setq org-agenda-buffer (current-buffer))
 	(setq org-agenda-contributing-files nil)
 	(setq org-agenda-columns-active nil)
-	(org-agenda-prepare-buffers (org-agenda-files nil 'ifmode))
+        (setq org-agenda-filters-preset
+              `((tag . ,org-agenda-tag-filter-preset)
+                (category . ,org-agenda-category-filter-preset)
+                (regexp . ,org-agenda-regexp-filter-preset)
+                (effort . ,org-agenda-effort-filter-preset)))
+        (org-agenda-prepare-buffers (org-agenda-files nil 'ifmode))
 	(setq org-todo-keywords-for-agenda
 	      (org-uniquify org-todo-keywords-for-agenda))
 	(setq org-done-keywords-for-agenda
@@ -4040,24 +4037,24 @@ agenda display, configure `org-agenda-finalize-hook'."
 	   org-agenda-top-headline-filter))
 	(when org-agenda-tag-filter
 	  (org-agenda-filter-apply org-agenda-tag-filter 'tag t))
-	(when (get 'org-agenda-tag-filter :preset-filter)
+	(when (assoc-default 'tag org-agenda-filters-preset)
 	  (org-agenda-filter-apply
-	   (get 'org-agenda-tag-filter :preset-filter) 'tag t))
+	   (assoc-default 'tag org-agenda-filters-preset) 'tag t))
 	(when org-agenda-category-filter
 	  (org-agenda-filter-apply org-agenda-category-filter 'category))
-	(when (get 'org-agenda-category-filter :preset-filter)
+	(when (assoc-default 'category org-agenda-filters-preset)
 	  (org-agenda-filter-apply
-	   (get 'org-agenda-category-filter :preset-filter) 'category))
+	   (assoc-default 'category org-agenda-filters-preset) 'category))
 	(when org-agenda-regexp-filter
 	  (org-agenda-filter-apply org-agenda-regexp-filter 'regexp))
-	(when (get 'org-agenda-regexp-filter :preset-filter)
+	(when (assoc-default 'regexp org-agenda-filters-preset)
 	  (org-agenda-filter-apply
-	   (get 'org-agenda-regexp-filter :preset-filter) 'regexp))
+	   (assoc-default 'regexp org-agenda-filters-preset) 'regexp))
 	(when org-agenda-effort-filter
 	  (org-agenda-filter-apply org-agenda-effort-filter 'effort))
-	(when (get 'org-agenda-effort-filter :preset-filter)
+	(when (assoc-default 'effort org-agenda-filters-preset)
 	  (org-agenda-filter-apply
-	   (get 'org-agenda-effort-filter :preset-filter) 'effort))
+	   (assoc-default 'effort org-agenda-filters-preset) 'effort))
 	(add-hook 'kill-buffer-hook #'org-agenda-reset-markers 'append 'local))
       (run-hooks 'org-agenda-finalize-hook))))
 
@@ -8094,14 +8091,14 @@ in the agenda."
 				     org-agenda-buffer-name))
 	 (org-agenda-keep-modes t)
 	 (tag-filter org-agenda-tag-filter)
-	 (tag-preset (get 'org-agenda-tag-filter :preset-filter))
+	 (tag-preset (assoc-default 'tag org-agenda-filters-preset))
 	 (top-hl-filter org-agenda-top-headline-filter)
 	 (cat-filter org-agenda-category-filter)
-	 (cat-preset (get 'org-agenda-category-filter :preset-filter))
+	 (cat-preset (assoc-default 'category org-agenda-filters-preset))
 	 (re-filter org-agenda-regexp-filter)
-	 (re-preset (get 'org-agenda-regexp-filter :preset-filter))
+	 (re-preset (assoc-default 'regexp org-agenda-filters-preset))
 	 (effort-filter org-agenda-effort-filter)
-	 (effort-preset (get 'org-agenda-effort-filter :preset-filter))
+	 (effort-preset (assoc-default 'effort org-agenda-filters-preset))
 	 (org-agenda-tag-filter-while-redo (or tag-filter tag-preset))
 	 (cols org-agenda-columns-active)
 	 (line (org-current-line))
@@ -8117,10 +8114,6 @@ in the agenda."
 		  ((stringp last-args)
 		   last-args))))
 	 (series-redo-cmd (get-text-property p 'org-series-redo-cmd)))
-    (put 'org-agenda-tag-filter :preset-filter nil)
-    (put 'org-agenda-category-filter :preset-filter nil)
-    (put 'org-agenda-regexp-filter :preset-filter nil)
-    (put 'org-agenda-effort-filter :preset-filter nil)
     (and cols (org-columns-quit))
     (message "Rebuilding agenda buffer...")
     (if series-redo-cmd
@@ -8137,10 +8130,6 @@ in the agenda."
 	  org-agenda-effort-filter effort-filter
 	  org-agenda-top-headline-filter top-hl-filter)
     (message "Rebuilding agenda buffer...done")
-    (put 'org-agenda-tag-filter :preset-filter tag-preset)
-    (put 'org-agenda-category-filter :preset-filter cat-preset)
-    (put 'org-agenda-regexp-filter :preset-filter re-preset)
-    (put 'org-agenda-effort-filter :preset-filter effort-preset)
     (let ((tag (or tag-filter tag-preset))
 	  (cat (or cat-filter cat-preset))
 	  (effort (or effort-filter effort-preset))
@@ -8536,7 +8525,7 @@ also press `-' or `+' to switch between filtering and excluding."
 	  (org-agenda-filter-apply org-agenda-tag-filter 'tag expand))))
      ((eq char ?\\)
       (org-agenda-filter-show-all-tag)
-      (when (get 'org-agenda-tag-filter :preset-filter)
+      (when (assoc-default 'tag org-agenda-filters-preset)
 	(org-agenda-filter-apply org-agenda-tag-filter 'tag expand)))
      ((eq char ?.)
       (setq org-agenda-tag-filter
@@ -8609,7 +8598,7 @@ grouptags."
      ((eq type 'tag)
       (setq filter
 	    (delete-dups
-	     (append (get 'org-agenda-tag-filter :preset-filter)
+	     (append (assoc-default 'tag org-agenda-filters-preset)
 		     filter)))
       (dolist (x filter)
 	(let ((op (string-to-char x)))
@@ -8621,7 +8610,7 @@ grouptags."
      ((eq type 'category)
       (setq filter
 	    (delete-dups
-	     (append (get 'org-agenda-category-filter :preset-filter)
+	     (append (assoc-default 'category org-agenda-filters-preset)
 		     filter)))
       (dolist (x filter)
 	(if (equal "-" (substring x 0 1))
@@ -8632,7 +8621,7 @@ grouptags."
      ((eq type 'regexp)
       (setq filter
 	    (delete-dups
-	     (append (get 'org-agenda-regexp-filter :preset-filter)
+	     (append (assoc-default 'regexp org-agenda-filters-preset)
 		     filter)))
       (dolist (x filter)
 	(if (equal "-" (substring x 0 1))
@@ -8643,7 +8632,7 @@ grouptags."
      ((eq type 'effort)
       (setq filter
 	    (delete-dups
-	     (append (get 'org-agenda-effort-filter :preset-filter)
+	     (append (assoc-default 'effort org-agenda-filters-preset)
 		     filter)))
       (dolist (x filter)
 	(push (org-agenda-filter-effort-form x) f))))
@@ -9336,13 +9325,13 @@ When called with a prefix argument, include all archive files as well."
 	       (t ""))
 	      (if (org-agenda-filter-any) " " "")
 	      (if (or org-agenda-category-filter
-		      (get 'org-agenda-category-filter :preset-filter))
+		      (assoc-default 'category org-agenda-filters-preset))
 		  '(:eval (propertize
 			   (concat "["
 	      			   (mapconcat
                                     #'identity
 	      			    (append
-	      			     (get 'org-agenda-category-filter :preset-filter)
+	      			     (assoc-default 'category org-agenda-filters-preset)
 	      			     org-agenda-category-filter)
 	      			    "")
 				   "]")
@@ -9350,36 +9339,36 @@ When called with a prefix argument, include all archive files as well."
                            'help-echo "Category used in filtering"))
                 "")
 	      (if (or org-agenda-tag-filter
-		      (get 'org-agenda-tag-filter :preset-filter))
+		      (assoc-default 'tag org-agenda-filters-preset))
 		  '(:eval (propertize
 			   (concat (mapconcat
 				    #'identity
 				    (append
-				     (get 'org-agenda-tag-filter :preset-filter)
+				     (assoc-default 'tag org-agenda-filters-preset)
 				     org-agenda-tag-filter)
 				    ""))
 			   'face 'org-agenda-filter-tags
 			   'help-echo "Tags used in filtering"))
 		"")
 	      (if (or org-agenda-effort-filter
-		      (get 'org-agenda-effort-filter :preset-filter))
+		      (assoc-default 'effort org-agenda-filters-preset))
 		  '(:eval (propertize
 			   (concat (mapconcat
 				    #'identity
 				    (append
-				     (get 'org-agenda-effort-filter :preset-filter)
+				     (assoc-default 'effort org-agenda-filters-preset)
 				     org-agenda-effort-filter)
 				    ""))
 			   'face 'org-agenda-filter-effort
 			   'help-echo "Effort conditions used in filtering"))
 		"")
 	      (if (or org-agenda-regexp-filter
-		      (get 'org-agenda-regexp-filter :preset-filter))
+		      (assoc-default 'regexp org-agenda-filters-preset))
 		  '(:eval (propertize
 			   (concat (mapconcat
 				    (lambda (x) (concat (substring x 0 1) "/" (substring x 1) "/"))
 				    (append
-				     (get 'org-agenda-regexp-filter :preset-filter)
+				     (assoc-default 'regexp org-agenda-filters-preset)
 				     org-agenda-regexp-filter)
 				    ""))
 			   'face 'org-agenda-filter-regexp
@@ -11224,10 +11213,10 @@ current HH:MM time."
      (,org-agenda-category-filter category)
      (,org-agenda-regexp-filter regexp)
      (,org-agenda-effort-filter effort)
-     (,(get 'org-agenda-tag-filter :preset-filter) tag)
-     (,(get 'org-agenda-category-filter :preset-filter) category)
-     (,(get 'org-agenda-effort-filter :preset-filter) effort)
-     (,(get 'org-agenda-regexp-filter :preset-filter) regexp))))
+     (,(assoc-default 'tag org-agenda-filters-preset) tag)
+     (,(assoc-default 'category org-agenda-filters-preset) category)
+     (,(assoc-default 'effort org-agenda-filters-preset) effort)
+     (,(assoc-default 'regexp org-agenda-filters-preset) regexp))))
 
 (defun org-agenda-drag-line-forward (arg &optional backward)
   "Drag an agenda line forward by ARG lines.
-- 
2.25.1

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