* lisp/gnus/gnus-sum.el (gnus-summary-read-group-1): Move setting
gnus-pick-line-number from here (bug#45269)...
(gnus-summary-prepare): To here. This ensures that the number is
reset when regenerating the buffer, for instance when limiting it.
* lisp/gnus/gnus-registry.el (gnus-registry-register-all): If nil,
the registry won't automatically create new entries for all seen
messages. Defaults to t to preserve previous behavior.
(gnus-registry-handle-action): Don't automatically create entries; if
one doesn't exist, don't handle anything.
(gnus-registry-register-message-ids): Only register if this option is
t.
(gnus-registry-get-or-make-entry): Add optional no-create argument.
(gnus-registry-get-id-key): This "get" operation should only create an
entry if this option is t.
* doc/misc/gnus.texi: Documentation and news.
* lisp/gnus/gnus-win.el (gnus-buffer-configuration): Include
shell-command-buffer-name value rather than symbol in pipe
configuration. (Bug#39138, bug#45154)
One search may be applied to several servers: don't let one server's
error derail the whole process.
* lisp/gnus/gnus-search.el (gnus-search-config-error): Define new
error.
(gnus-search-run-search, gnus-search-server-to-engine): Raise this
specific error as appropriate.
(gnus-search-run-query): Catch this error and effectively demote it.
* lisp/gnus/nnimap.el (nnimap--split-download-body): New variable.
(nnimap-fetch-inbox): Use it in conjunction with
nnimap-split-download-body.
* lisp/gnus/spam.el: Don't load nnimap.el at compile time for a
dynamic variable.
(spam-setup-widening): Rather than unconditionally set user option
nnimap-split-download-body, set nnimap--split-download-body to a
unique non-nil value only if the variable was nil (bug#44981).
(spam-teardown-widening): New function that undoes this if
nnimap--split-download-body still holds the unique value.
(spam-unload-hook): Call spam-teardown-widening to revert any change
to the value of nnimap--split-download-body.
* lisp/gnus/nnimap.el (nnimap-split-download-body): And add an
obsolete alias for `nnimap-split-download-body-default'.
(nnimap-fetch-inbox): Check the value of the option, not the variable.
* doc/misc/gnus.texi (Client-Side IMAP Splitting): Move the primary
documentation of this option to this section.
* lisp/gnus/gnus-search.el (gnus-search-imap-handle-flag): This allows
"mark:A" to be translated into "ANSWERED" and "-mark:A" to be
translated into "UNANSWERED".
This behavior both better matches the previous nnir behavior, reducing
confusion for new users, and matches behavior when using parsed
queries.
* lisp/gnus/gnus-search.el (gnus-search-imap-search-keys): Make sure
this variable contains all known IMAP search keys.
(gnus-search-run-search): If the search query doesn't start with a
known search key, prepend "TEXT " to the query.
* doc/misc/gnus.texi (Summary Maneuvering): Document it.
* lisp/gnus/gnus-sum.el (gnus-paging-select-next): New variable.
(gnus-summary-prev-page, gnus-summary-next-page): Use it.
* lisp/gnus/gnus-search.el (gnus-search-indexed-parse-output): When
filtering for desired groups, accept any of [.\/] as potential segment
delimiters. Later on, filesystem path separators will be interpreted
as dots (".") when constructing group names. Also, make sure we use
`expand-file-name' on the prefix, and just use `string-remove-prefix'
to get rid of it.
So we aren't re-instantiating (and potentially configuring) them with
every search.
* lisp/gnus/gnus-search.el (gnus-search-engine-instance-alist): New
variable holding server->engine mapping.
(gnus-search-server-to-engine): See if we've already instantiated this
server. If so, return it. If not, instantiate it and save in the above
variable.
(gnus-search-shutdown): Shutdown function clearing the above alist.
* lisp/gnus/gnus-group.el (gnus-group-make-search-group,
gnus-group-read-ephemeral-search-group): If a search is initiated from
a topic line, make sure we get all the groups under that topic (and
under sub-topics).
* 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.
* lisp/gnus/gnus-group.el (gnus-group-make-search-group,
gnus-group-read-ephemeral-search-group): If the query is coming in via
the old 'nnir-query-spec key, we know not to parse it.
* lisp/gnus/gnus-search.el (gnus-search-make-query-string): Check if
the query was sent in as '(query "query"), and not '(query . "query).
(gnus-search-imap-search-keys): Add x-gm-raw to imap search keys.
(gnus-search-prepare-query): If we know this query should be raw,
don't even try parsing it, as it probably won't work.
* lisp/gnus/gnus-search.el (gnus-search-server-to-engine): Because of
the way we've set up the obsolete variable alias for
`nnir-method-default-engines', we may end up with its value in
`gnus-search-default-engines'. Make the check for "old style" values
general, so we catch them no matter where they came from.
* lisp/gnus/gnus-group.el (gnus-group-make-search-group,
gnus-group-read-ephemeral-search-group): Check for and accept the old
nnir-* spec keys.
* lisp/gnus/gnus-search.el (shared-initialize): Use
generate-new-buffer instead of doing it ourselves.
(gnus-search-server-to-engine): Raise an informative error explicitly
if we can't find a search engine, rather than letting it fall through
to something less helpful.
(gnus-search-make-spec): Add `gnus-search--complete-key-data' to
`completion-at-point-functions' locally, not globally.
* lisp/gnus/gnus-search.el (gnus-search-default-engines): Change type
from a list of two-element lists, to alist. This matches nnir's old
option type, and should make transition easier.
(nnir-imap-default-search-key): Note that variable is obsolete.
(gnus-search-transform-expression): Interpret the "attachment" key as
"body" in imap searches. Allow specifying larger/smaller message size
values in KB or MB units.
(gnus-search-server-to-engine): Fix error in this function, and
clarify somewhat.
* lisp/gnus/gnus-search.el: Replace with an :initform tag on the slot
definition. `symbol-value' is necessary, otherwise the defclass macro
will treat the option as a quoted symbol.
Remove the gnus-search-gmane class and all associated methods. If
search functionality is ever resurrected, then revert this commit.
* lisp/gnus/gnus-search.el: Delete code, and remove from default value
of `gnus-search-default-engines'.
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.
