The group parameter nnselect-always-regenerate causes the list of
articles in the group to be generated each time it is needed. For this
to work reliably the list of articles has to be generated at the
appropriate time and to have a reproducible ordering.
* lisp/gnus/gnus-search.el (gnus-search-run-search): For nnselect
groups if the article list has not been stored, regenerate it.
* lisp/gnus/nnselect.el (nnselect-generate-artlist): Sort the
generated list of articles by RSV, group, and number. Store the
artlist after generation. When the new optional argument INFO is
non-nil, update the group info.
(nnselect-compress-artlist, nnselect-uncompress-artlist): Preserve the
article list ordering.
(nnselect-get-artlist): Return nil when nnselect-always-regenerate is t.
(nnselect-store-artlist): Store the group active range along with the
artlist. Don't keep the artlist if nnselect-always-regenerate is t.
(nnselect-request-group): The full article list isn't needed at this
stage, only the active range.
(nnselect-retrieve-headers): Regenerate the article list if there
is no stored value. Inhibit gnus-demon while retrieving headers.
(nnselect-request-group-scan): Don't generate the article list when
nnselect-always-regenerate is t since it will be generated again later
on.
(nnselect-request-create-group): Allow the artlist to be passed as an
argument to the function. Update the group info and store the artlist.
Allow thread referral to use search whenever possible, displaying the
results in the current summary buffer if possible and a new nnselect
buffer if not.
* lisp/gnus/nnimap.el (nnimap-request-thread): Obsolete function.
* lisp/gnus/gnus-search.el (gnus-search-thread): Allow detailed
specification of how/where to search. Add found articles to the
current summary buffer if possible, or create a new ephemeral nnselect
group if not.
* lisp/gnus/gnus-sum.el (gnus-refer-thread-use-search): Allow a list
of servers and groups to search.
(gnus-summary-refer-thread): Find thread-related articles by using a
backend-specific method, gnus-search, or retrieving nearby headers in
the current group.
* lisp/gnus/nnselect.el (nnselect-search-thread): Obsolete function.
(nnselect-request-thread): Allow thread referral from nnselect groups.
* doc/misc/gnus.texi (Finding the Parent): Document changes to thread
referral.
* lisp/gnus/nnselect.el (nnselect-push-info): Don't update backend
marks when quit-config is not nil since gnus-update-marks has already
been called. Move checking for unread articles outside the
gnus-atomic block so it may be interrupted. Replace let* with let.
Cleanup code.
* lisp/gnus/nnselect.el (nnselect-push-info): Restrict updating of
marked articles to those whose headers have been retrieved, taking
care to handle 'tuples.
* lisp/gnus/nnselect.el (nnselect-push-info): The current list of read
articles should be computed from the summary buffer local variables,
not from the group info.
* lisp/gnus/nnselect.el (nnselect-push-info): Don't try to propagate
info to component groups if gnus-newsgroup-selection is nil.
* lisp/gnus/nnselect.el (nnselect-request-update-info): Don't update
the nnselect group info if gnus-newsgroup-selection is nil.
* lisp/gnus/nnselect.el (nnselect-generate-run): New function that
replaces nnselect-run.
(nnselect-store-artlist): New function.
(nnselect-get-artlist): Update function.
(nnselect-request-group, nnselect-request-thread)
(nnselect-request-create-group, nnselect-request-group-scan): Use the
new functions.
* doc/misc/gnus.texi (Selection Groups): Document artlist storage and
retrieval.
* lisp/gnus/nnselect.el (nnselect-allow-ephemeral-expiry): Make
the first sentence of the doc string be a single line.
* doc/misc/gnus.texi (Creating Search Groups): Fix space between
sentences.
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.
* lisp/gnus/gnus-group.el (gnus-group-make-search-group):
(gnus-group-read-ephemeral-search-group): Ensure the server is
correctly identified even for nnselect groups.
* lisp/gnus/gnus-search.el (gnus-search-nnselect): New function.
(gnus-search-default-engines): Use it.
(gnus-search-make-spec): Queries from nnselect should always be raw.
* lisp/gnus/nnselect.el (gnus-search): Silence the byte-compiler.
* lisp/gnus/nnselect.el (nnselect-request-update-info): Use a hash and
other tricks to speed things up.
(nnselect-request-group-scan): Make sure the artlist is uncompressed.
* lisp/gnus/gnus-search.el (gnus-search-run-search): Continue
iterating until a match is found.
* lisp/gnus/nnselect.el (nnselect-request-article): Use new
gnus-search query format.
* lisp/gnus/gnus-search.el (gnus-search-run-query): Modify
condition-case to re-signal any gnus-search related errors; the user
should see them.
(gnus-search-error): Define a new parent error for all gnus-search
errors.
* lisp/gnus/nnselect.el (nnselect-request-group): If an ephemeral
group is empty, there is nothing to see, so remove the group.
(nnselect-run): Catch and return an empty artlist on error.
This library provides a fundamental reworking of the search
functionality previously found in nnir.el. It uses class-based search
engines to interface with external searching facilities, and a parsed
search query syntax that can search multiple engines.
* lisp/gnus/gnus-search.el: New library containing search
functionality for Gnus.
* doc/misc/gnus.texi: Document.
* lisp/gnus/gnus-group.el (gnus-group-make-search-group,
gnus-group-read-ephemeral-search-group): Remove references to nnir,
change meaning of prefix argument, change values of nnselect-function
and nnselect-args.
* lisp/gnus/nnselect.el: Replace references to nnir
(nnselect-request-article): Use gnus-search functions, and search
criteria.
(nnselect-request-thread, nnselect-search-thread): Use gnus-search
thread search.
(gnus-summary-make-search-group): Switch to use gnus-search function
and arguments.
* test/lisp/gnus/search-tests.el: Tests for new functionality.
* lisp/gnus/nnselect.el (numbers-by-group,
nnselect-request-update-info, nnselect-push-info): Handle all three
mark types ('tuple, 'range, 'list) and general speedups.
This is part of removing code from nnir.el that isn't related to
searching backends and therefore belongs somewhere else.
* lisp/gnus/gnus-group.el (gnus-group-make-search-group)
(gnus-group-read-ephemeral-search-group): Put the logic for
determining the groups to search here, rather than in nnir. Improve
documentation.
* lisp/gnus/gnus-int.el (gnus-server-get-active): Renamed from
'nnir-get-active.
* lisp/gnus/nnir.el (nnir-run-imap, nnir-run-find-grep): Use it.
(nnir-get-active): Remove.
(nnir-make-specs): Make obsolete.
* lisp/gnus/nnselect.el (nnselect-group-server): Make obsolete in
favor of 'gnus-group-server.
* lisp/org/ol-gnus.el (org-gnus-store-link): Change 'nnir to
'nnselect.
* lisp/gnus/gnus-group.el: Define obsolete function alias for
'gnus-group-make-nnir-group to
'gnus-group-read-ephemeral-search-group.
* lisp/gnus/gnus-sum.el: Define obsolete variable alias for
'gnus-refer-thread-use-nnir to 'gnus-refer-thread-use-search.
* lisp/gnus/nnselect.el: Define obsolete variable alias for
'nnir-retrieve-headers-override-function to
'nnselect-retrieve-headers-override-function.
* lisp/gnus/nnir.el: Restore definition of 'nnir-summary-line-format
and mark obsolete.
This new backend allows gnus to handle arbitrary sets of messages
spanning multiple groups, even when these groups are from different
backends and different servers. All gnus glue is removed from
nnir (leaving only the backend search functions) and gnus
search-related processing is done through nnselect. In appropriate
places 'nnir' has been replaced by 'nnselect' or 'search'.
* etc/NEWS: Document the change.
* doc/misc/gnus.texi: New documentation for nnselect and update
searching and thread-referral sections.
* lisp/gnus/nnselect.el: New file.
* lisp/gnus/nnir.el: Remove all gnus glue, leaving only searching
capability. Improve documentation strings.
* lisp/gnus/gnus-group.el (gnus-group-read-ephemeral-search-group,
gnus-group-make-search-group): New functions.
* lisp/gnus/gnus-msg.el (gnus-setup-message, gnus-group-news,
gnus-summary-news-other-window): Update to work for nnselect. Fix
gnus-newsgroup-name wrangling.
*lisp/gnus/gnus-registry.el
(gnus-registry-action,gnus-registry-ignore-group-p): Make work from nnselect.
* lisp/gnus/nnheader.el (nnheader-parse-head, nnheader-parse-nov):
Rework and consolidate header parsing.
* lisp/gnus/gnus-agent.el (gnus-agent-regenerate-group):
* lisp/gnus/gnus-cache.el (gnus-possibly-enter-article):
* lisp/gnus/gnus-cloud.el (gnus-cloud-available-chunks):
* lisp/gnus/gnus-msg.el (gnus-inews-yank-articles):
* lisp/gnus/gnus-sum. (gnus-get-newsgroup-headers):
* lisp/gnus/nndiary.el (nndiary-parse-head):
* lisp/gnus/nnfolder.el (nnfolder-parse-head):
* lisp/gnus/nnmaildir.el (nnmaildir--update-nov):
* lisp/gnus/nnml.el (nnml-parse-head):
* lisp/gnus/nnspool.el (nnspool-insert-nov-head):
Use new header parsing.
* lisp/gnus/gnus-start.el (gnus-read-active-for-groups): Rescan on
activation by default.
* lisp/gnus/gnus-sum.el (gnus-summary-line-format-alist): New specs
for virtual groups.
(gnus-article-sort-by-rsv, gnus-thread-sort-by-rsv): New functions to
allow sorting by search RSV.
