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org-manual: Clarify nil value of ~org-crypt-key~ 

* doc/org-manual.org (Org Crypt): Explain that nil value of
~org-crypt-key~ bypasses the per-heading properties.

Reported-by: Ignacio Casso <ignaciocasso@hotmail.com>
Link: https://orgmode.org/list/PAXPR06MB7760DA356C7C27045BEB64F6C6449@PAXPR06MB7760.eurprd06.prod.outlook.com
This commit is contained in:
Ihor Radchenko 2022-10-14 10:16:13 +08:00
parent d331f52cac
commit 2d6032db96
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GPG Key ID: 6470762A7DA11D8B
1 changed files with 7 additions and 2 deletions
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@ -20668,8 +20668,9 @@ Here is a suggestion for Org Crypt settings in Emacs init file:
(setq org-tags-exclude-from-inheritance '("crypt"))
(setq org-crypt-key nil)
;; GPG key to use for encryption
;; Either the Key ID or set to nil to use symmetric encryption.
;; GPG key to use for encryption.
;; nil means use symmetric encryption unconditionally.
;; "" means use symmetric encryption unless heading sets CRYPTKEY property.
(setq auto-save-default nil)
;; Auto-saving does not cooperate with org-crypt.el: so you need to
@ -20691,6 +20692,10 @@ specifying the respective key as property =CRYPTKEY=, e.g.:
:END:
#+end_example
Note that =CRYPTKEY= property is only effective when ~org-crypt-key~
is set to non-nil. ~nil~ value of ~org-crypt-key~ makes Org use
symmetric encryption unconditionally.
Excluding the =crypt= tag from inheritance prevents already encrypted
text from being encrypted again.