emacs-29 ccc188fcf98 04/11: * lisp/files.el (untrusted-content): New variable.

[Eli Zaretskii]

branch: emacs-29
commit ccc188fcf98ad9166ee551fac9d94b2603c3a51b
Author: Ihor Radchenko <yantar92@posteo.net>
Commit: Eli Zaretskii <eliz@gnu.org>

    * lisp/files.el (untrusted-content): New variable.
    
    The new variable is to be used when buffer contents comes from untrusted
    source.
---
 lisp/files.el | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lisp/files.el b/lisp/files.el
index c0d26b2343c..5536af014f6 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -695,6 +695,14 @@ Also see the `permanently-enabled-local-variables' 
variable."
 Some modes may wish to set this to nil to prevent directory-local
 settings being applied, but still respect file-local ones.")
 
+(defvar-local untrusted-content nil
+  "Non-nil means that current buffer originated from an untrusted source.
+Email clients and some other modes may set this non-nil to mark the
+buffer contents as untrusted.
+
+This variable might be subject to change without notice.")
+(put 'untrusted-content 'permanent-local t)
+
 ;; This is an odd variable IMO.
 ;; You might wonder why it is needed, when we could just do:
 ;; (setq-local enable-local-variables nil)