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Re: How to store list of variable values into another dynamically create
From: |
Leo Butler |
Subject: |
Re: How to store list of variable values into another dynamically created variables |
Date: |
Tue, 05 Jan 2021 12:24:48 -0600 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) |
miles christopher <numbchild@gmail.com> writes:
> I want to store some variables' value into another minor mode temporary
> variable
> for later restore.
>
> Here is my Elisp code, I don't know how to implement it in FIXME and TODO.
> Hope
> some Elisp master help me.
>
> #+begin_src emacs-lisp
> (defvar mu4e-marker-icons-marker-list
> '(mu4e-headers-seen-mark
> mu4e-headers-new-mark
> mu4e-headers-unread-mark
> mu4e-headers-signed-mark
> mu4e-headers-encrypted-mark
> mu4e-headers-draft-mark
> mu4e-headers-attach-mark
> mu4e-headers-passed-mark
> mu4e-headers-flagged-mark
> mu4e-headers-replied-mark
> mu4e-headers-trashed-mark
> ;; thread prefix marks
> mu4e-headers-default-prefix
> mu4e-headers-has-child-prefix
> mu4e-headers-empty-parent-prefix
> mu4e-headers-first-child-prefix
> mu4e-headers-duplicate-prefix)
> "A list of markers used in mu4e.")
>
> (defun mu4e-marker-icons--store ()
> "Store user old config."
> (mapcar
> (lambda (marker-variable)
> ;; FIXME:
> `(setq
> ,(intern (replace-regexp-in-string
> "mu4e-headers-" "mu4e-marker-icons--"
> (symbol-name marker-variable)))
> ,(symbol-value marker-variable))
> )
> mu4e-marker-icons-marker-list))
>
> (defun mu4e-marker-icons--restore ()
> "Restore user old config."
> ;; TODO:
> (mapcar
> (lambda (marker-variable)
> ;; FIXME:
> `(setq
> marker-variable
> ,(symbol-value (intern (replace-regexp-in-string
> "mu4e-headers-" "mu4e-marker-icons--"
> (symbol-name marker-variable))))))
> mu4e-marker-icons-marker-list))
> #+end_src
Since you are trying to rename the variables, why not start with a list
of conses (old . new) rather than a list of variable names?
#+begin_src emacs-lisp
(defvar mu4e-marker-icons-marker-list
'((mu4e-headers-seen-mark . mu4e-saved-headers-seen-mark)
(mu4e-headers-new-mark . mu4e-saved-headers-new-mark)
(mu4e-headers-unread-mark . mu4e-saved-headers-unread-mark)
(mu4e-headers-signed-mark . mu4e-saved-headers-signed-mark)
(mu4e-headers-encrypted-mark . mu4e-saved-headers-encrypted-mark)
(mu4e-headers-draft-mark . mu4e-saved-headers-draft-mark)
(mu4e-headers-attach-mark . mu4e-saved-headers-attach-mark)
(mu4e-headers-passed-mark . mu4e-saved-headers-passed-mark)
(mu4e-headers-flagged-mark . mu4e-saved-headers-flagged-mark)
(mu4e-headers-replied-mark . mu4e-saved-headers-replied-mark)
(mu4e-headers-trashed-mark . mu4e-saved-headers-trashed-mark)
;; thread prefix marks
(mu4e-headers-default-prefix . mu4e-saved-headers-default-prefix)
(mu4e-headers-has-child-prefix . mu4e-saved-headers-has-child-prefix)
(mu4e-headers-empty-parent-prefix . mu4e-saved-headers-empty-parent-prefix)
(mu4e-headers-first-child-prefix . mu4e-saved-headers-first-child-prefix)
(mu4e-headers-duplicate-prefix . mu4e-saved-headers-duplicate-prefix))
"A list of markers used in mu4e.")
#+end_src
Your save and restore functions are then dead easy:
#+begin_src emacs-lisp
(defun mu4e-save (l)
(mapcar (lambda(x) (set (cdr x) (symbol-value (car x)))) l))
(defun mu4e-restore (l)
(let ((lrev (mapcar (lambda(x) (cons (cdr x) (car x))) l)))
(mu4e-save lrev)))
#+end_src
Leo