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Turn expiry on for nnselect groups

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Articles in (persistent) groups from the gnus/nnselect backend will
now be run through the expiry process upon exit, like other persistent
groups. Expiry is not on by default for ephemeral nnselect groups but
may be turned on with nnselect-allow-ephemeral-expiry set to t.

* lisp/gnus/nnselect.el (nnselect-request-expire-articles): Make
article expiry work.
(nnselect-allow-ephemeral-expiry): New variable.
* doc/misc/gnus.texi (Creating Search Groups): Document
nnselect-allow-ephemeral-expiry.
This commit is contained in:
Andrew G Cohen 2022-03-04 16:20:01 +08:00
parent 4f6583ab8a
commit 62d97d4afd
2 changed files with 32 additions and 18 deletions
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6
doc/misc/gnus.texi
View file

@ -21735,6 +21735,12 @@ articles are drawn. If you want to create a @emph{persistent} group
that sticks around after exit from the summary buffer, you can call
@code{gnus-group-make-search-group} (bound to @kbd{G g}).
Unlike persistent groups, ephemeral groups by default do not run
articles through the expiry process on exiting. If you want expiry to
happen in ephemeral search groups you can customize the variable
@code{nnselect-allow-ephemeral-expiry}. In all cases the expiry
process uses the underlying group's expiry parameters.
So you just performed a search whose results are so fabulous you
wished you had done a persistent search rather than an ephemeral one?
No problem; you can create such a group by calling

44
lisp/gnus/nnselect.el
View file

@ -256,6 +256,12 @@ as `(keyfunc member)' and the corresponding element is just
(define-obsolete-variable-alias 'nnir-retrieve-headers-override-function
'nnselect-retrieve-headers-override-function "28.1")
(defcustom nnselect-allow-ephemeral-expiry nil
"If non-nil, articles in an ephemeral nnselect group will be put
through the expiry process."
:version "29.1"
:type 'boolean)
(defcustom nnselect-retrieve-headers-override-function nil
"A function that retrieves article headers for ARTICLES from GROUP.
The retrieved headers should populate the `nntp-server-buffer'.
@ -457,24 +463,26 @@ If this variable is nil, or if the provided function returns nil,
:test #'equal :count 1)))))
(deffoo nnselect-request-expire-articles
(articles _group &optional _server force)
(if force
(let (not-expired)
(pcase-dolist (`(,artgroup . ,artids) (ids-by-group articles))
(let ((artlist (sort (mapcar #'cdr artids) #'<)))
(unless (gnus-check-backend-function 'request-expire-articles
artgroup)
(error "Group %s does not support article expiration" artgroup))
(unless (gnus-check-server (gnus-find-method-for-group artgroup))
(error "Couldn't open server for group %s" artgroup))
(push (mapcar (lambda (art)
(car (rassq art artids)))
(let ((nnimap-expunge 'immediately))
(gnus-request-expire-articles
artlist artgroup force)))
not-expired)))
(sort (delq nil not-expired) #'<))
articles))
(articles group &optional _server force)
(let ((nnimap-expunge 'immediately) not-deleted)
(if (and (not force)
(not nnselect-allow-ephemeral-expiry)
(gnus-ephemeral-group-p (nnselect-add-prefix group)))
articles
(pcase-dolist (`(,artgroup . ,artids) (ids-by-group articles))
(let ((artlist (sort (mapcar #'cdr artids) #'<)))
(unless
(gnus-check-backend-function 'request-expire-articles artgroup)
(error "Group %s does not support article expiration" artgroup))
(unless (gnus-check-server (gnus-find-method-for-group artgroup))
(error "Couldn't open server for group %s" artgroup))
(setq not-deleted
(append
(mapcar (lambda (art) (car (rassq art artids)))
(gnus-request-expire-articles artlist artgroup
force))
not-deleted))))
(sort (delq nil not-deleted) #'<))))
(deffoo nnselect-warp-to-article ()