Re: [PATCH] Org Agenda Support Argument Collection for Custom Bulk Functions (was: Custom Bulk Functions With Prompt)

[Kevin Foley <kevin@kevinjfoley.me>]

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Kyle Meyer <kyle@kyleam.com> writes:
> Please fill this line (fill-column in .dir-locals.el is set to 70)
> and...
>> [...]
> ... drop this unrelated space change.

Done and done.

> Reading this docstring in full, I felt it was a bit odd to repeat the
> bulk-cut entry from the initial example again, as it stays the same and
> isn't relevant.  So perhaps something like this would be clearer:
>
>   ... and returns them as a list.  For example, the first
>   entry in the above example could be extended as
>   
>     (?R (set-category get-category))
>   
>   Now, `B R' will ...
>
> Or perhaps not.  I'm okay with it either way and will leave that up to
> you.

I agree, I've removed it.


> Please drop the new line before the closing quote.

Done.

> convention nit: It'd be good to reflow the type to not go beyond ~80
> columns.

Fixed.

>> +  :type '(alist :key-type character
>> +                :value-type (list (function :tag "Bulk Custom Function")
>> +                                  (choice (const :tag "No Bulk Custom Argument Function" nil)
>> +                                          (function :tag "Bulk Custom Argument Function"))))
> This type looks like it's specifying a format that isn't supported by
> org-agenda-bulk-action:
> [...]
> I think it'd probably end up a bit cleaner if you go with (key fn
> [arg-fn])

I ended up moving to this structure and changing the pcase to a
pcase-let which I think makes things a bit cleaner, let me know your
thoughts.

>   (setq org-agenda-bulk-custom-functions
>         '((?D my/bulk-action)
>           (?E (my/bulk-action))
>           (?F (my/bulk-action my/args))))
> However, customize doesn't render the above value properly

I believe I have the type correct for the new layout.  For example the
following renders correctly:

(setq org-agenda-bulk-custom-functions 
      '((?a ignore)
	(?b ignore nil)
	(?c ignore ignore)))

Side note I'm not sure your example would render properly regardless
since `my/bulk-action' and `my/args' aren't functions.

Cheers,
Kevin Foley


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From 3d5dc61c1565695e797936af1f2eb50cd5460c95 Mon Sep 17 00:00:00 2001
From: "Kevin J. Foley" <kevin@kevinjfoley.me>
Date: Sat, 13 Feb 2021 12:04:38 -0500
Subject: [PATCH] org-agenda.el: Support argument collection for custom bulk
 functions

* lisp/org-agenda.el (org-agenda-bulk-custom-functions): Add
documentation about argument collection for custom bulk functions.
(org-agenda-bulk-action): Support function to collect arguments for
custom bulk functions.
* etc/ORG-NEWS (Option ~org-agenda-bulk-custom-functions~ now supports
collecting bulk arguments): Add entry to NEWS.
---
 etc/ORG-NEWS       |  7 +++++++
 lisp/org-agenda.el | 34 +++++++++++++++++++++++++++-------
 2 files changed, 34 insertions(+), 7 deletions(-)

diff --git a/etc/ORG-NEWS b/etc/ORG-NEWS
index 5e5f1954d..d7de97e2c 100644
--- a/etc/ORG-NEWS
+++ b/etc/ORG-NEWS
@@ -81,6 +81,13 @@ block. ~org-babel-latex-preamble~, ~org-babel-latex-begin-env~ and
 the user to specify the preamble and code that preceedes and proceeds
 the contents of the source block.
 
+*** Option ~org-agenda-bulk-custom-functions~ now supports collecting bulk arguments
+
+When specifying a custom agenda bulk option, you can now also specify
+a function which collects the arguments to be used with each call to
+the custom function.
+
+
 ** New features
 *** =ob-python= improvements to =:return= header argument 
 
diff --git a/lisp/org-agenda.el b/lisp/org-agenda.el
index dedf7e5bb..42d127232 100644
--- a/lisp/org-agenda.el
+++ b/lisp/org-agenda.el
@@ -2080,9 +2080,25 @@ (defcustom org-agenda-bulk-custom-functions nil
 
 With selected entries in an agenda buffer, `B R' will call
 the custom function `set-category' on the selected entries.
-Note that functions in this alist don't need to be quoted."
-  :type '(alist :key-type character :value-type (group function))
-  :version "24.1"
+Note that functions in this alist don't need to be quoted.
+
+You can also specify a function which collects arguments to be
+used for each call to your bulk custom function.  The argument
+collecting function will be run once and should return a list of
+arguments to pass to the bulk function.  For example:
+
+  \\='((?R set-category get-category))
+
+Now, `B R' will call the custom `get-category' which would prompt
+the user once for a category.  That category is then passed as an
+argument to `set-category' for each entry it's called against."
+  :type
+  '(alist :key-type character
+	  :value-type
+          (group (function :tag "Bulk Custom Function")
+		 (choice (function :tag "Bulk Custom Argument Function")
+		         (const :tag "No Bulk Custom Argument Function" nil))))
+  :package-version '(Org . "9.5")
   :group 'org-agenda)
 
 (defmacro org-agenda-with-point-at-orig-entry (string &rest body)
@@ -10486,10 +10502,14 @@ (defun org-agenda-bulk-action (&optional arg)
 		(completing-read "Function: " obarray #'fboundp t nil nil))))
 
 	(action
-	 (pcase (assoc action org-agenda-bulk-custom-functions)
-	   (`(,_ ,f) (setq cmd f) (setq redo-at-end t))
-	   (_ (user-error "Invalid bulk action: %c" action)))))
-
+	 (pcase-let (`(,_ ,fn ,arg-fn)
+                     (assoc action org-agenda-bulk-custom-functions))
+           (if (not fn)
+               (user-error "Invalid bulk action: %c" action)
+             (when (functionp arg-fn)
+               (setq fn (apply #'apply-partially fn (funcall arg-fn))))
+             (setq cmd fn)
+             (setq redo-at-end t)))))
       ;; Sort the markers, to make sure that parents are handled
       ;; before children.
       (setq entries (sort entries
-- 
2.28.0