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(gnus-blocked-images): Clarify privacy implications

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* lisp/gnus/gnus-art.el (gnus-blocked-images): Clarify the privacy
implication of altering the value of this variable.
This commit is contained in:
Lars Ingebrigtsen 2018-05-18 16:05:02 +02:00
parent 3aab8626ba
commit f4d9fd3dd4
1 changed files with 10 additions and 0 deletions
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10
lisp/gnus/gnus-art.el
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@ -1616,6 +1616,16 @@ It is a string, such as \"PGP\". If nil, ask user."
(defcustom gnus-blocked-images 'gnus-block-private-groups
"Images that have URLs matching this regexp will be blocked.
Note that the main reason external images are included in HTML
emails (these days) is to allow tracking whether you've read the
email message or not. If you allow loading images in HTML
emails, you give up privacy.
The default value of this variable blocks loading external
resources when reading email groups (and therefore stops
tracking), but allows loading external resources when reading
from NNTP newsgroups and the like.
This can also be a function to be evaluated. If so, it will be
called with the group name as the parameter, and should return a
regexp."