On 23/07/2023 21:13, Jens Schmidt wrote:
Gnus can have a global Message-ID cache, but it's not on by default (at
least not in Emacs 28, haven't checked others). And anyway, it's a
potentially incomplete *cache*, and not an *index*.
Thank you for clarification. Certainly just Message-ID is not enough
without the index.
For nntp groups you already have the option to store links as web links
to groups.google.com, by means of `org-gnus-prefer-web-links'.
I believe that links may be converted to web archives either to open or
to export them. In a document I would prefer a more general form like
news://news.gmane.io/gmane.emacs.orgmode/b0d3fee0-0dc9-a7ee-32dd-478297cb6...@vodafonemail.de
though group name is redundant.
In Thunderbird links to known articles work reasonably well
<mid:b0d3fee0-0dc9-a7ee-32dd-478297cb6...@vodafonemail.de>
I do not think, mid: links are ideal, but it is off-topic in this thread.
For storing links I would avoid volatile parts like mail folder where a
message *currently* resides or name of virtual folder/group specific to
user configuration as well as application-specific URIs.
I admit that due to gnus design, group names are unavoidable for some
backends. I do not see a better way than the approach implemented in the
suggested patch.
