Merge remote-tracking branch 'origin/scratch/lexical-gnus' into trunk

* lisp/gnus/gnus-group.el: Defvar all the `gnus-tmp-*` vars

These were collected via

    sed -n -e 's/.*\(gnus-tmp-[^     ()]*\).*/(defvar \1)/p' \
        lisp/gnus/gnus-group.el

; * lisp/double.el: Delete cruft dating back to 1994.

Prefer defvar-local in preloaded files

* lisp/abbrev.el:
* lisp/bindings.el (mode-line-mule-info, mode-line-modified)
(mode-line-remote, mode-line-process)
(mode-line-buffer-identification):
* lisp/buff-menu.el (Buffer-menu-files-only):
* lisp/files.el (buffer-file-number, buffer-file-read-only)
(local-write-file-hooks, write-contents-functions)
(file-local-variables-alist, dir-local-variables-alist)
(save-buffer-coding-system, buffer-save-without-query):
* lisp/font-core.el (font-lock-defaults):
* lisp/font-lock.el (font-lock-keywords-case-fold-search)
(font-lock-syntactically-fontified)
(font-lock-extend-after-change-region-function)
(font-lock-extend-region-functions, font-lock-major-mode):
* lisp/menu-bar.el (list-buffers-directory):
* lisp/simple.el (next-error--message-highlight-overlay)
(next-error-buffer, next-error-function)
(next-error-move-function, goto-line-history)
(minibuffer-default-add-done, undo-extra-outer-limit):
* lisp/tab-bar.el (tab-switcher-column):
* lisp/term/ns-win.el (ns-select-overlay):
* lisp/window.el (window-size-fixed, window-area-factor)
(window-group-start-function, window-group-end-function)
(set-window-group-start-function)
(recenter-window-group-function)
(pos-visible-in-window-group-p-function)
(selected-window-group-function)
(move-to-window-group-line-function): Prefer defvar-local.

Prefer defvar-local in mail/*.el

* lisp/mail/emacsbug.el (report-emacs-bug-send-command)
(report-emacs-bug-send-hook):
* lisp/mail/reporter.el (reporter-initial-text):
* lisp/mail/supercite.el (sc-mail-info, sc-attributions):
* lisp/mail/rmail.el (rmail-buffer-swapped, rmail-view-buffer):
Prefer defvar-local.

Prefer defvar-local in progmodes/*.el

This skips libraries that might want compatibility with Emacs 24.2.

* lisp/progmodes/compile.el (compilation-auto-jump-to-next)
(compilation--previous-directory-cache, compilation--parsed)
(compilation-gcpro):
* lisp/progmodes/cpp.el (cpp-overlay-list, cpp-edit-buffer)
(cpp-parse-symbols, cpp-edit-symbols):
* lisp/progmodes/ebnf2ps.el (ebnf-eps-upper-x, ebnf-eps-upper-y)
(ebnf-eps-prod-width, ebnf-eps-max-height, ebnf-eps-max-width):
* lisp/progmodes/f90.el (f90-cache-position):
* lisp/progmodes/gud.el (gud-marker-acc):
* lisp/progmodes/js.el (js--quick-match-re)
(js--quick-match-re-func, js--cache-end, js--last-parse-pos)
(js--state-at-last-parse-pos, js--tmp-location):
* lisp/progmodes/octave.el (inferior-octave-directory-tracker-resync):
* lisp/progmodes/sh-script.el (sh-header-marker): Prefer defvar-local.

Prefer defvar-local in textmodes/*.el

This skips libraries that might want compatibility with Emacs 24.2.

* lisp/textmodes/artist.el (artist-curr-go)
(artist-line-char-set, artist-line-char, artist-fill-char-set)
(artist-fill-char, artist-erase-char, artist-default-fill-char)
(artist-draw-region-min-y, artist-draw-region-max-y)
(artist-borderless-shapes):
* lisp/textmodes/css-mode.el (css--at-ids, css--bang-ids)
(css--nested-selectors-allowed):
* lisp/textmodes/enriched.el (enriched-old-bindings):
* lisp/textmodes/flyspell.el (flyspell-generic-check-word-predicate)
(flyspell-consider-dash-as-word-delimiter-flag)
(flyspell-dash-dictionary, flyspell-dash-local-dictionary)
(flyspell-word-cache-start, flyspell-word-cache-end)
(flyspell-word-cache-word, flyspell-word-cache-result)
(flyspell-changes, flyspell-auto-correct-pos)
(flyspell-auto-correct-region, flyspell-auto-correct-ring)
(flyspell-auto-correct-word):
* lisp/textmodes/ispell.el (ispell-local-dictionary-overridden)
(ispell-local-pdict, ispell-buffer-session-localwords):
* lisp/textmodes/refill.el (refill-ignorable-overlay)
(refill-doit):
* lisp/textmodes/sgml-mode.el (html--buffer-classes-cache)
(html--buffer-ids-cache):
* lisp/textmodes/table.el (table-mode-indicator):
* lisp/textmodes/tex-mode.el (tex-send-command-modified-tick):
* lisp/textmodes/two-column.el (2C-autoscroll-start, 2C-mode):
Prefer defvar-local.

Prefer defvar-local in cedet

* lisp/cedet/ede.el (ede-object-root-project)
(ede-object-project, ede-object):
* lisp/cedet/mode-local.el (mode-local-symbol-table):
* lisp/cedet/semantic.el (semantic--parse-table)
(semantic-symbol->name-assoc-list)
(semantic-symbol->name-assoc-list-for-type-parts)
(semantic-case-fold, semantic--buffer-cache)
(semantic-unmatched-syntax-cache)
(semantic-unmatched-syntax-cache-check, semantic-parser-name)
(semantic--completion-cache, semantic-parse-tree-state)
(semantic-init-mode-hook, semantic-parser-warnings):
* lisp/cedet/semantic/bovine.el
(semantic-bovinate-nonterminal-check-obarray):
* lisp/cedet/semantic/complete.el (semantic-collector-per-buffer-list):
* lisp/cedet/semantic/ctxt.el (semantic-command-separation-character)
(semantic-function-argument-separation-character):
* lisp/cedet/semantic/db-find.el (semanticdb-find-lost-includes)
(semanticdb-find-scanned-include-tags):
* lisp/cedet/semantic/db.el (semanticdb-new-database-class)
(semanticdb-default-find-index-class)
(semanticdb-current-database, semanticdb-current-table)
(semanticdb-project-system-databases)
(semanticdb-out-of-buffer-create-table-fcn):
* lisp/cedet/semantic/debug.el (semantic-debug-parser-source)
(semantic-debug-parser-class)
(semantic-debug-parser-debugger-source):
* lisp/cedet/semantic/dep.el (semantic-dependency-include-path)
(semantic-dependency-system-include-path):
* lisp/cedet/semantic/format.el (semantic-function-argument-separator)
(semantic-format-parent-separator):
* lisp/cedet/semantic/fw.el (semantic-new-buffer-fcn-was-run):
* lisp/cedet/semantic/grammar.el (semantic-grammar-macros)
(semantic--grammar-macros-regexp-1)
(semantic--grammar-macros-regexp-2):
* lisp/cedet/semantic/idle.el (semantic-idle-scheduler-mode):
* lisp/cedet/semantic/imenu.el (semantic-imenu-expandable-tag-classes):
* lisp/cedet/semantic/lex-spp.el
(semantic-lex-spp-macro-symbol-obarray)
(semantic-lex-spp-project-macro-symbol-obarray)
(semantic-lex-spp-dynamic-macro-symbol-obarray)
(semantic-lex-spp-dynamic-macro-symbol-obarray-stack):
* lisp/cedet/semantic/lex.el (semantic-flex-keywords-obarray)
(semantic-lex-types-obarray, semantic-lex-analyzer)
(semantic-lex-syntax-modifications, semantic-lex-syntax-table)
(semantic-lex-comment-regex, semantic-lex-number-expression)
(semantic-lex-depth, semantic-flex-extensions)
(semantic-flex-syntax-modifications, semantic-ignore-comments)
(semantic-flex-enable-newlines, semantic-flex-enable-whitespace)
(semantic-flex-enable-bol, semantic-number-expression)
(semantic-flex-depth):
* lisp/cedet/semantic/senator.el (senator-isearch-semantic-mode):
* lisp/cedet/semantic/sort.el
(semantic-orphaned-member-metaparent-type):
* lisp/cedet/semantic/tag.el (semantic-tag-expand-function):
* lisp/cedet/semantic/util-modes.el (semantic-show-parser-state-string)
(semantic-stickyfunc-sticky-classes)
(semantic-highlight-func-ct-overlay):
* lisp/cedet/semantic/util.el
(semantic-type-relation-separator-character)
(semantic-equivalent-major-modes):
* lisp/cedet/semantic/wisent.el (wisent-error-function)
(wisent-lexer-function): Prefer defvar-local.

Prefer defvar-local in net/*.el

* lisp/net/browse-url.el (browse-url-temp-file-name):
* lisp/net/rcirc.el (rcirc-ignore-buffer-activity-flag)
(rcirc-low-priority-flag, rcirc-parent-buffer)
(rcirc-activity-types, rcirc-last-sender):
* lisp/net/soap-inspect.el (soap-inspect-previous-items)
(soap-inspect-current-item):
* lisp/net/telnet.el (telnet-remote-echoes)
(telnet-interrupt-string, telnet-count): Prefer defvar-local.

Prefer defvar-local in vc/*.el

* lisp/vc/ediff-diff.el (ediff-whitespace, ediff-word-1)
(ediff-word-2, ediff-word-3, ediff-word-4):
* lisp/vc/ediff-init.el (ediff-defvar-local):
* lisp/vc/smerge-mode.el (smerge-check-cache):
* lisp/vc/vc-bzr.el (vc-bzr-annotation-table):
* lisp/vc/vc-dispatcher.el (vc-mode-line-hook): Prefer defvar-local.

* etc/MACHINES: Document that we support AArch64 with macOS.

Minimise the time Vminibuffer_list is in an inconsistent state (src/minibuf.c)

src/minibuf.c (get_minibuffer): Move the XSETCAR which writes the new
minibuffer into Vminibuffer_list to immediately after the MB's creation, so
that the list is in a consistent state before calling fundamental-mode or
minibuffer-inactive-mode.

Prefer defvar-local in international/*.el

* lisp/international/mule-cmds.el (current-input-method)
(current-input-method-title, current-transient-input-method)
(previous-transient-input-method, input-method-history)
(deactivate-current-input-method-function)
(describe-current-input-method-function):
* lisp/international/mule.el (buffer-file-coding-system-explicit):
* lisp/international/quail.el (quail-current-package)
(quail-guidance-str, quail-overlay, quail-conv-overlay)
(quail-current-key, quail-current-str)
(quail-current-translations, quail-current-data):
* lisp/international/robin.el (robin-mode)
(robin-current-package-name): Prefer defvar-local in
international/*.el.

Prefer defvar-local in nxml/*.el

* lisp/nxml/rng-cmpct.el (rng-c-current-token)
(rng-c-escape-positions, rng-c-file-name):
* lisp/nxml/rng-pttrn.el (rng-current-schema):
* lisp/nxml/rng-valid.el (rng-validate-timer)
(rng-validate-quick-timer, rng-error-count, rng-message-overlay)
(rng-message-overlay-inhibit-point, rng-message-overlay-current)
(rng-validate-up-to-date-end, rng-conditional-up-to-date-start)
(rng-conditional-up-to-date-end, rng-dtd): Prefer defvar-local.

Prefer defvar-local in emacs-lisp/*.el

* lisp/emacs-lisp/chart.el (chart-local-object):
* lisp/emacs-lisp/easy-mmode.el (define-minor-mode)
(define-globalized-minor-mode):
* lisp/emacs-lisp/edebug.el:
* lisp/emacs-lisp/generic.el (generic-font-lock-keywords):
* lisp/emacs-lisp/re-builder.el (reb-regexp, reb-regexp-src)
(reb-overlays):
* lisp/emacs-lisp/syntax.el
(syntax-propertize-extend-region-functions): Prefer defvar-local.

Prefer defvar-local in allout

* lisp/allout.el (allout-just-did-undo, allout-mode)
(allout-layout, allout-regexp, allout-bullets-string)
(allout-bullets-string-len, allout-depth-specific-regexp)
(allout-depth-one-regexp, allout-line-boundary-regexp)
(allout-bob-regexp, allout-header-subtraction)
(allout-plain-bullets-string-len, allout-mode-prior-settings)
(allout-outside-normal-auto-fill-function)
(allout-encryption-plaintext-sanitization-regexps)
(allout-encryption-ciphertext-rejection-regexps)
(allout-explicitly-deactivated, allout-recent-prefix-beginning)
(allout-recent-prefix-end, allout-recent-depth)
(allout-recent-end-of-subtree, allout-post-goto-bullet)
(allout-command-counter, allout-this-command-hid-text):
* lisp/allout-widgets.el (allout-widgets-mode)
(allout-widgets-tally, allout-widgets-mode-inhibit)
(allout-inhibit-body-modification-hook)
(allout-widgets-changes-record)
(allout-widgets-undo-exposure-record)
(allout-escaped-prefix-regexp, allout-item-icon-keymap)
(allout-item-body-keymap, allout-cue-span-keymap)
(allout-widgets-last-decoration-timing)
(allout-container-item-widget): Prefer defvar-local.

Prefer defvar-local in cua

* lisp/emulation/cua-base.el (cua-inhibit-cua-keys)
(cua--status-string):
* lisp/emulation/cua-rect.el (cua--rectangle)
(cua--rectangle-overlays): Prefer defvar-local.

Obsolete viper-deflocalvar for defvar-local

* lisp/emulation/viper-init.el (viper-deflocalvar): Make obsolete.
Use defvar-local.

* lisp/emulation/viper-cmd.el (viper--undo-change-group-handle):
* lisp/emulation/viper-init.el (viper-vi-intercept-minor-mode)
(viper-vi-basic-minor-mode, viper-vi-local-user-minor-mode)
(viper-vi-global-user-minor-mode)
(viper-vi-state-modifier-minor-mode)
(viper-vi-diehard-minor-mode, viper-vi-kbd-minor-mode)
(viper-insert-intercept-minor-mode)
(viper-insert-basic-minor-mode)
(viper-insert-local-user-minor-mode)
(viper-insert-global-user-minor-mode)
(viper-insert-state-modifier-minor-mode)
(viper-insert-diehard-minor-mode, viper-insert-kbd-minor-mode)
(viper-replace-minor-mode, viper-emacs-intercept-minor-mode)
(viper-emacs-local-user-minor-mode)
(viper-emacs-global-user-minor-mode, viper-emacs-kbd-minor-mode)
(viper-emacs-state-modifier-minor-mode)
(viper-vi-minibuffer-minor-mode)
(viper-insert-minibuffer-minor-mode)
(viper-automatic-iso-accents, viper-special-input-method)
(viper-intermediate-command, viper-began-as-replace)
(viper-replace-overlay, viper-last-posn-in-replace-region)
(viper-last-posn-while-in-insert-state)
(viper-sitting-in-replace, viper-replace-chars-to-delete)
(viper-replace-region-chars-deleted, viper-current-state)
(viper-cted, viper-current-indent, viper-preserve-indent)
(viper-auto-indent, viper-electric-mode, viper-insert-point)
(viper-pre-command-point, viper-com-point)
(viper-ex-style-motion, viper-ex-style-editing)
(viper-ESC-moves-cursor-back, viper-delete-backwards-in-replace)
(viper-related-files-and-buffers-ring)
(viper-local-search-start-marker, viper-search-overlay)
(viper-last-jump, viper-last-jump-ignore)
(viper-minibuffer-current-face, viper-minibuffer-overlay):
* lisp/emulation/viper-keym.el (viper-vi-local-user-map)
(viper-insert-local-user-map, viper-emacs-local-user-map)
(viper--key-maps, viper-need-new-vi-local-map)
(viper-need-new-insert-local-map)
(viper-need-new-emacs-local-map):
* lisp/emulation/viper-mous.el (viper-mouse-click-search-noerror)
(viper-mouse-click-search-limit):
* lisp/emulation/viper-util.el (viper-non-word-characters)
(viper-ALPHA-char-class):
* lisp/emulation/viper.el: Use defvar-local instead of now obsolete
macro viper-deflocalvar.

Don't attempt to display input method guidance in expired minibuffers

This caused infinite waits in circumstances involving setting an input method
in a global minor mode.  This commit fixes bug #45792.

* lisp/international/quail.el (quail-show-guidance): Test the major mode is
not minibuffer-inactive-mode before proceding with the function.

execute-kbd-macro doc string clarification

* src/macros.c (Fexecute_kbd_macro): Mention that the buffer is
(potentially) changed (bug#37396).

Make operating-system-release obsolete

* lisp/subr.el (operating-system-release): Make obsolete
(bug#39940).  There are no in-tree usages any more, and the data
doesn't seem all that interesting on its own.

Doc string improvements around `default-korean-keyboard'

* lisp/language/korea-util.el (default-korean-keyboard): Mention
"Hangul" here for easier discoverability.
(toggle-korean-input-method, quail-hangul-switch-symbol-ksc)
(quail-hangul-switch-hanja): Mention the variable.

Revert "Improve fontifying of #| ... |# in `lisp-mode'"

This reverts commit 1275dc4711af77c9c223063dcd149d782d497463.

Setting comment-end isn't the correct thing to do -- it makes M-; insert that string.

; Fix my previous commit

* lisp/play/5x5.el (5x5-solver-output): Prefer defvar-local.
* lisp/play/gamegrid.el (gamegrid-display-table): Provide default
value.

Prefer defvar-local in play/*.el

* lisp/play/5x5.el
(5x5-grid, 5x5-x-pos, 5x5-y-pos, 5x5-moves, 5x5-cracking):
* lisp/play/decipher.el (decipher-alphabet)
(decipher-stats-buffer, decipher-undo-list-size)
(decipher-undo-list):
* lisp/play/gamegrid.el (gamegrid-use-glyphs)
(gamegrid-use-color, gamegrid-font, gamegrid-face)
(gamegrid-display-options, gamegrid-buffer-width)
(gamegrid-buffer-height, gamegrid-blank, gamegrid-timer)
(gamegrid-display-mode, gamegrid-display-table)
(gamegrid-face-table, gamegrid-buffer-start)
(gamegrid-score-file-length):
* lisp/play/snake.el (snake-length, snake-velocity-x)
(snake-velocity-y, snake-positions, snake-score, snake-paused)
(snake-moved-p, snake-velocity-queue):
* lisp/play/tetris.el (tetris-shape, tetris-rot)
(tetris-next-shape, tetris-n-shapes, tetris-n-rows)
(tetris-score, tetris-pos-x, tetris-pos-y, tetris-paused):
Prefer defvar-local.

* lisp/play/5x5.el (5x5-defvar-local): Make obsolete.

Remove redundant defvar for artist-mode

* lisp/textmodes/artist.el (artist-mode): Remove redundant
defvar; it is defined by define-minor-mode.

Prefer defvar-local in erc

* lisp/erc/erc-backend.el (erc-server-current-nick)
(erc-server-process, erc-session-server, erc-session-connector)
(erc-session-port, erc-server-announced-name)
(erc-server-version, erc-server-parameters)
(erc-server-connected, erc-server-reconnect-count)
(erc-server-quitting, erc-server-reconnecting)
(erc-server-timed-out, erc-server-banned)
(erc-server-error-occurred, erc-server-lines-sent)
(erc-server-last-peers, erc-server-last-sent-time)
(erc-server-last-ping-time, erc-server-last-received-time)
(erc-server-lag, erc-server-filter-data, erc-server-duplicates)
(erc-server-processing-p, erc-server-flood-last-message)
(erc-server-flood-queue, erc-server-flood-timer)
(erc-server-ping-handler):
* lisp/erc/erc-capab.el (erc-capab-identify-activated)
(erc-capab-identify-sent):
* lisp/erc/erc-dcc.el (erc-dcc-byte-count, erc-dcc-entry-data)
(erc-dcc-file-name):
* lisp/erc/erc-ezbounce.el (erc-ezb-session-list):
* lisp/erc/erc-join.el (erc--autojoin-timer):
* lisp/erc/erc-netsplit.el (erc-netsplit-list):
* lisp/erc/erc-networks.el (erc-network):
* lisp/erc/erc-notify.el (erc-last-ison, erc-last-ison-time):
* lisp/erc/erc-ring.el (erc-input-ring, erc-input-ring-index):
* lisp/erc/erc-stamp.el (erc-timestamp-last-inserted)
(erc-timestamp-last-inserted-left)
(erc-timestamp-last-inserted-right):
* lisp/erc/erc.el (erc-session-password, erc-channel-users)
(erc-server-users, erc-channel-topic, erc-channel-modes)
(erc-insert-marker, erc-input-marker, erc-last-saved-position)
(erc-dbuf, erc-active-buffer, erc-default-recipients)
(erc-session-user-full-name, erc-channel-user-limit)
(erc-channel-key, erc-invitation, erc-channel-list)
(erc-bad-nick, erc-logged-in, erc-default-nicks)
(erc-nick-change-attempt-count, erc-send-input-line-function)
(erc-channel-new-member-names, erc-channel-banlist)
(erc-current-message-catalog): Prefer defvar-local.

Remove redundant requires of 'derived'

* lisp/net/newst-backend.el (derived):
* lisp/net/newst-plainview.el (derived):
* lisp/play/gametree.el (derived):
* lisp/textmodes/less-css-mode.el (derived): Remove redundant require;
'define-derived-mode' is autoloaded.

Recompute mode-lines when marking conflicts resolved

* lisp/vc/vc.el (vc-mark-resolved):
Recompute the mode lines of the affected files.

* lisp/gnus: Use closures now that we activated `lexical-binding`

* lisp/gnus/nnml.el (nnml-request-accept-article):
* lisp/gnus/nnmairix.el (nnmairix-request-marks):
* lisp/gnus/nnmail.el (nnmail-get-new-mail-1):
* lisp/gnus/mm-view.el (mm-inline-image)
(mm-inline-text-html-render-with-w3m, mm-inline-text)
(mm-insert-inline, mm-inline-message):
* lisp/gnus/mm-partial.el (mm-inline-partial):
* lisp/gnus/mm-archive.el (mm-archive-dissect-and-inline):
* lisp/gnus/gnus-util.el (gnus-create-info-command):
* lisp/gnus/gnus-topic.el (gnus-topic-edit-parameters)
(gnus-topic-sort-topics-1):
* lisp/gnus/gnus-sum.el (gnus-summary-edit-article):
* lisp/gnus/gnus-srvr.el (gnus-server-edit-server):
* lisp/gnus/gnus-msg.el (gnus-inews-make-draft)
(gnus-inews-add-send-actions, gnus-summary-cancel-article)
(gnus-summary-supersede-article, gnus-summary-resend-message)
(gnus-configure-posting-styles):
* lisp/gnus/gnus-kill.el (gnus-execute):
* lisp/gnus/gnus-html.el (gnus-html-wash-images):
* lisp/gnus/gnus-group.el (gnus-group-edit-group)
(gnus-group-nnimap-edit-acl):
* lisp/gnus/gnus-draft.el (gnus-draft-edit-message, gnus-draft-setup):
* lisp/gnus/gnus-art.el (gnus-article-edit-part)
(gnus-mm-display-part, gnus-article-edit):
* lisp/gnus/gnus-agent.el (gnus-category-edit-predicate)
(gnus-category-edit-score, gnus-category-edit-groups):
Use closures instead of `(lambda ...).

* lisp/gnus/nnoo.el (noo--defalias): New function.
(nnoo-import-1, nnoo-define-skeleton-1): Use it to avoid `eval`.

* lisp/gnus: Use lexical-binding in all the files

* lisp/gnus/gnus-group.el (features): Use `dlet`.
(gnus-tmp-level, gnus-tmp-marked, gnus-tmp-group): Declare vars.
(gnus-group-insert-group-line): Bind dynbound vars via `let` rather
than as formal args.  Bind `number` as dynbound.
(gnus-visual, gnus-score-find-score-files-function)
(gnus-home-score-file, gnus-apply-kill-hook)
(gnus-summary-expunge-below): Declare vars.
(gnus-group-restart, gnus-group-list-plus): Fix `interactive` spec
since the arg is unused.

* lisp/gnus/mail-source.el (mail-source-bind, mail-source-bind-common):
Use `dlet` and suppress the warnings about the non-prefixed dynbound vars.
(mail-source-set-1): Remove unused var `auth-info`.
(mail-source-call-script): Remove unused var `background`.
(mail-source-fetch-pop, mail-source-check-pop): Bind pop3 vars with `dlet`.

* lisp/gnus/gnus-int.el (mail-source-plugged, gnus-inhibit-demon):
Declare vars.
(gnus-server-opened, gnus-status-message)
(gnus-open-server, gnus-close-server, gnus-request-list)
(gnus-finish-retrieve-group-infos, gnus-retrieve-group-data-early)
(gnus-request-list-newsgroups, gnus-request-newgroups)
(gnus-request-regenerate, gnus-request-compact, gnus-request-group)
(gnus-retrieve-groups, gnus-request-post, gnus-request-expunge-group)
(gnus-request-scan, gnus-request-update-info, gnus-request-marks)
(gnus-request-accept-article, gnus-request-create-group)
(gnus-asynchronous-p, gnus-remove-denial):
Bind `gnus-command-method` via `let` rather than as formal args.

* lisp/gnus/gnus-topic.el (gnus-topic-insert-topic-line):
Pass documented vars to eval for `gnus-topic-line-format-spec`.

* lisp/gnus/message.el (message-yank-original): Use `cl-progv` rather
than `eval` to bind the vars from `message-cite-style`.

* lisp/gnus/mml.el (mml-parse-1): Use `apply` instead of `eval`.
(gnus-newsgroup-name, gnus-displaying-mime, gnus-newsgroup-name)
(gnus-article-prepare-hook, gnus-newsgroup-charset)
(gnus-original-article-buffer, gnus-message-buffer)
(message-this-is-news, message-this-is-mail): Declare vars.

* lisp/gnus/deuglify.el (gnus-outlook-rearrange-article): Remove unused
var `cite-marks`.
* lisp/gnus/gnus-art.el (ansi-color-context-region): Declare var.
(gnus-mime-display-attachment-buttons-in-header): Move declaration
before first use.
(gnus-mime-display-alternative): Remove unused var `from`.
* lisp/gnus/gnus-bookmark.el (gnus-bookmark-bmenu-list): Remove unused
var `start` `end`.
* lisp/gnus/gnus-cache.el (gnus-article-decode-hook)
(nnml-generate-active-function): Declare var.
* lisp/gnus/gnus-cite.el (gnus-message-citation-mode): Remove unused
var `keywords`.
* lisp/gnus/gnus-cloud.el (gnus-cloud-encode-data): Remove unused var
`cipher`.
(gnus-cloud-ensure-cloud-group): Remove unused var `method`.
* lisp/gnus/gnus-delay.el (gnus-delay-article): Remove unused var `days`.
* lisp/gnus/gnus-html.el (gnus-html-wash-images): Remove unused vars
`tag`, `string`, and `images`.
(gnus-html-wash-tags): Remove unused vars `string` and `images`.
* lisp/gnus/gnus-msg.el (gnus-msg-mail): Remove unused var `group-name`.
(gnus-group-mail, gnus-group-news, gnus-summary-mail-other-window)
(gnus-summary-news-other-window):
Remove unused vars `group` and `buffer`.
(gnus-configure-posting-styles): Remove unused vars `style` and `attribute`.
* lisp/gnus/gnus-picon.el (gnus-picon-find-face): Remove unused vars
`database`, `directory`, and `instance`.
(gnus-picon-transform-newsgroups): Remove unused var `point`.
* lisp/gnus/gnus-range.el (gnus-range-difference): Remove unused var `safe`.
* lisp/gnus/gnus-score.el (gnus-score-load-file): Remove unused var
`score-fn`.
* lisp/gnus/gnus-sum.el (message-options-set-recipient): Declare var.
* lisp/gnus/gnus-undo.el (gnus-undo): Fix docstring lie.
* lisp/gnus/gnus-util.el (print-string-length)
(iswitchb-make-buflist-hook): Declare vars.
(gnus-emacs-version): Remove unused var `codename`.
(gnus-rename-file): Remove unused vars `old-name` and `new-name`.
* lisp/gnus/gnus-uu.el (gnus-uu-yenc-article): Remove unused var
`start-char`.
(gnus-asynchronous): Declare var.
* lisp/gnus/mm-partial.el (gnus-displaying-mime): Declare var.
(mm-inline-partial): Remove unused var `buffer`.
* lisp/gnus/mm-view.el (w3m-force-redisplay, w3m-safe-url-regexp)
(gnus-displaying-mime, gnus-original-article-buffer)
(gnus-article-prepare-hook): Declare vars.
* lisp/gnus/mml-smime.el (mml-smime-epg-encrypt): Remove unused var
`boundary`.
(mml-smime-epg-verify): Remove unused vars `plain` and `signature-file`.
* lisp/gnus/mml1991.el (pgg-text-mode): Declare var.
* lisp/gnus/mml2015.el (pgg-text-mode): Declare var.
(mml2015-pgg-decrypt): Remove unused var `result`.
(mml2015-epg-key-image-to-string): Remove unused var `error`.
(mml2015-epg-decrypt): Remove unused var `result`.
(mml2015-epg-verify): Remove unused vars `plain` and `signature-file`.
* lisp/gnus/nnbabyl.el (nnml-current-directory): Declare var.
* lisp/gnus/nndiary.el (nndiary-files): Move declaration before first use.
* lisp/gnus/nnfolder.el (nnfolder-request-accept-article):
Remove unused var `buf`.
* lisp/gnus/nnmail.el (nnmail-parse-active): Remove unused var `err`.
* lisp/gnus/nnmairix.el (nnmairix-request-group): Remove unused var `args`.
(nnmairix-request-create-group): Remove unused var `info`.
(nnmairix-request-list): Remove unused var `folder`.
(nnmairix-request-set-mark): Remove unused var `propto`.
(nnmairix-request-set-mark): Remove unused vars `number` and `method`.
(nnmairix-close-group): Remove unused var `method`.
(nnmairix-create-search-group-from-message): Remove unused var `cq`.
(nnmairix-create-server-and-default-group): Remove unused var `create`.
(nnmairix-purge-old-groups): Remove unused var `folder`.
(nnmairix-remove-tick-mark-original-article, nnmairix-get-valid-servers):
Remove unused var `cur`.
(nnmairix-replace-group-and-numbers): Remove unused var `header`.
(nnmairix-goto-original-article): Remove unused var `rval`.
(nnmairix-widget-create-query): Remove unused var `allwidgets`.
* lisp/gnus/nnmbox.el (nnml-current-directory): Declare var.
* lisp/gnus/nnmh.el (nnmh-toplev): Move declaration before first use.
(nnmh-request-list-1): Remove unused var `rdir`.
* lisp/gnus/nnml.el (nnml-generate-nov-file): Remove unused var `file`.
* lisp/gnus/nnrss.el (nnrss-request-article): Remove unused var `post`.
(nnrss-request-article): Remove unused var `fn`.
(nnrss-check-group): Remove unused var `rdf-ns`.
* lisp/gnus/nnweb.el (nnweb-request-article): Remove unused var `active`.
(nnweb-google-parse-1): Remove unused var `Score`.
* lisp/gnus/spam-stat.el (spam-stat-error-holder): Remove var.
(spam-stat-buffer-words-with-scores): Remove unused var `word`.
(spam-stat-score-buffer): Remove unused var `spam-stat-error-holder`.
(spam-stat-split-fancy): Use `err` instead of `spam-stat-error-holder`.
* lisp/gnus/spam-wash.el (spam-wash): Remove unused var `handle`.
* lisp/gnus/spam.el (spam-copy-or-move-routine): Remove unused vars
`article` and `mark`.
(spam-register-routine): Remove unused var `article`.
(spam-log-undo-registration): Remove unused var `found`.
(spam-ifile-register-with-ifile): Remove unused var `parameters`.
(spam-check-stat): Remove unused vars `category` and `return`.
(spam-parse-list): Remove unused var `found`.
(spam-filelist-register-routine): Remove unused var `from`.

* lisp/gnus: Misc simplifications found during conversion to lexical

* lisp/gnus/nnoo.el (noo-import-1, nnoo-define-skeleton-1): Use `dolist`.
(noo-map-functions, nnoo-define-basics): Directly emit the code rather than
going through an intermediate function; this also avoids the use of `eval`.
(noo-map-functions-1, nnoo-define-basics-1): Delete functions,
folded into their corresponding macro.

* lisp/gnus/gmm-utils.el (gmm-tool-bar-from-list): Demote `eval` to
`symbol-value`.

* lisp/gnus/gnus-art.el (gnus-button-handle-describe-key): Avoid `eval`
since `kbd` is a function nowadays.
(gnus-treat-part-number): Rename from `part-number`.
(gnus-treat-total-parts): Rename from `total-parts`.
(gnus-treat-article, gnus-treat-predicate): Adjust accordingly.

* lisp/gnus/gnus-cache.el (gnus-agent-load-alist): Use `declare-function`.

* lisp/gnus/gnus-group.el (gnus-cache-active-hashtb): Use `defvar`.
(gnus-group-iterate): Make it a normal function since lexical scoping
avoids the risk of name capture anyway.
(gnus-group-delete-articles): Actually use the `oldp` arg.

* lisp/gnus/gnus-html.el (gnus-html-wash-images): Fix debug message so
it's emitted after the `url` var it prints is actually initialized.
And avoid `setq` while we're at it.

* lisp/gnus/gnus-msg.el (gnus-group-mail, gnus-group-news)
(gnus-summary-mail-other-window, gnus-summary-news-other-window):
Merge `let`s using `let*`.

* lisp/gnus/gnus-spec.el (gnus-update-format-specifications):
Tighten the scope of `buffer`, and tighten a regexp.
(gnus-parse-simple-format): Reduce code duplication.

* lisp/gnus/gnus-start.el (gnus-child-mode): Don't `defvar` it since we
never use that variable and accordingly don't define it as a minor mode.

* lisp/gnus/gnus-util.el (gnus-byte-compile): Simplify so it obeys
`gnus-use-byte-compile` not just on the first call.
(iswitchb-minibuffer-setup): Declare.

* lisp/gnus/mail-source.el (mail-source-bind-1)
(mail-source-bind-common-1): Use `mapcar`.
(mail-source-set-common-1): Use `dolist`.
(display-time-event-handler): Declare.

* lisp/gnus/mml-smime.el (mml-smime-epg-verify): Reduce code duplication.

* lisp/gnus/mml.el (mml-parse-1): Reduce code duplication.

* lisp/gnus/mml2015.el (mml2015-epg-verify): Reduce code duplication.

* lisp/gnus/nnmail.el (nnmail-get-split-group): Tighten regexp.
(nnmail-split-it): Reduce code duplication.

* lisp/gnus/nnweb.el (nnweb-request-article): Avoid `setq`.

* lisp/gnus/spam.el (BBDB): Use the `noerror` arg of `require`, and
define all the functions for BBDB regardless if the require succeeded.
(spam-exists-in-BBDB-p): Don't inline, not worth it.

With minibuffer-follows-selected-frame `hybrid', preserve recursive Mbuffers

...when enable-recursive-minibuffers is non-nil, and several minibuffers are
activated from different frames.  Also set the major mode of a reused active
minibuffer to `fundamental-mode' - up till now it's been
minibuffer-inactive-mode.

* src/minibuf.c (read_minibuf): with the indicated settings of variables,
"stack up" all containing minibuffers on the mini-window of the current
frame.  Delete another, now superfluous such stacking up.
(set_minibuffer_mode): New function.
(get_minibuffer): Call the above new function (twice), in place of inline
code, ensuring active minibuffers are never left in minibuffer-inactive-mode.

* lisp/gnus: Remove redundant `:group` args

* lisp/gnus/spam-stat.el:
* lisp/gnus/spam-report.el:
* lisp/gnus/smime.el:
* lisp/gnus/nnrss.el:
* lisp/gnus/nnmairix.el:
* lisp/gnus/nnimap.el:
* lisp/gnus/nndiary.el:
* lisp/gnus/mm-url.el:
* lisp/gnus/mail-source.el:
* lisp/gnus/gnus-win.el:
* lisp/gnus/gnus-topic.el:
* lisp/gnus/gnus-sieve.el:
* lisp/gnus/gnus-search.el:
* lisp/gnus/gnus-registry.el:
* lisp/gnus/gnus-notifications.el:
* lisp/gnus/gnus-gravatar.el:
* lisp/gnus/gnus-eform.el:
* lisp/gnus/gnus-dup.el:
* lisp/gnus/gnus-diary.el:
* lisp/gnus/gnus-demon.el:
* lisp/gnus/gnus-delay.el:
* lisp/gnus/gnus-cloud.el:
* lisp/gnus/gnus-cite.el:
* lisp/gnus/gnus-bookmark.el:
* lisp/gnus/gmm-utils.el:
* lisp/gnus/deuglify.el:
* lisp/gnus/canlock.el: Remove redundant `:group` arguments

* lisp/gnus: Demote some macros and defsubsts, plus a fix

* lisp/gnus/gnus-sum.el (gnus-summary-thread-level)
(gnus-summary-article-mark): Turn macros into `defsubst`.

* lisp/gnus/mail-source.el (mail-source-bind-common): Actually use its arg.

* lisp/gnus/nntp.el (nntp-copy-to-buffer): Turn macro into a `defsubst`.
(nntp-wait-for, nntp-retrieve-data, nntp-send-command): Don't inline
those, it's not worth it.

* lisp/gnus: Use `with-current-buffer` at a few more places

* lisp/gnus/nnmbox.el (nnmbox-request-scan, nnmbox-read-mbox):
* lisp/gnus/nnmairix.el (nnmairix-create-search-group):
* lisp/gnus/nnfolder.el (nnfolder-existing-articles):
* lisp/gnus/nndraft.el (nndraft-auto-save-file-name):
* lisp/gnus/nndoc.el (nndoc-request-article):
* lisp/gnus/nnbabyl.el (nnbabyl-read-mbox):
* lisp/gnus/gnus-score.el (gnus-score-body):
* lisp/gnus/gnus-start.el (gnus-dribble-enter)
(gnus-dribble-eval-file, gnus-ask-server-for-new-groups)
(gnus-read-newsrc-file, gnus-read-descriptions-file):
* lisp/gnus/gnus-spec.el (gnus-update-format-specifications):
* lisp/gnus/gnus-draft.el (gnus-draft-edit-message):
* lisp/gnus/gnus-art.el (gnus-request-article-this-buffer)
(gnus-article-edit-exit): Use `with-current-buffer`.

Fix NS build broken by a recent change

* src/nsmenu.m (set_frame_menubar, Fns_reset_menu): Adapt to
recent changes in set_frame_menubar.  (Bug#45759)

Allow the caller to specify own face on suffix in annotation-function

* lisp/minibuffer.el (completion--insert-strings):
Don't add 'completions-annotations' face when the caller
specified own face in annotation-function.
Remove no-op code for 'unless prefix' branch.
(completion-metadata, completion-extra-properties):
Update docs of affixation-function.
Suggested by Clemens <clemera@posteo.net> (bug#45780)

* test/lisp/minibuffer-tests.el: Rename package name from
completion-tests.el to minibuffer-tests.el.
Add new test completion--insert-strings-faces.

* doc/lispref/minibuf.texi (Completion Variables)
(Programmed Completion): Update descriptions of
annotation-function and affixation-function.

; Improve defcustom :type in last change.

Reduce flicker in Isearch mode

Lazy highlighting now happens immediately when the search string is at
least as long as the value of the new custom variable
`lazy-highlight-no-delay-length`.  Also avoid updating the lazy
count in the echo area too often.
* isearch.el (lazy-highlight-no-delay-length): New defcustom.
* isearch.el (lazy-lazy-count-format): Avoid a momentarily incorrect
count when reversing search direction.
* isearch.el (isearch-lazy-highlight-new-loop): Avoid a call to
`isearch-message` that is quickly succeed by a second echo area
update, thus causing flicker.
* isearch.el (isearch-lazy-highlight-new-loop):
Start lazy highlight immediately if appropriate.
* etc/NEWS: Announce the change.
* doc/emacs/search.texi: Document `lazy-highlight-no-delay-length'.

Copyright-paperwork-exempt: yes

* lisp/gnus/gnus-msg.el: Remove empty `unwind-protect`s

(gnus-msg-mail, gnus-group-mail)
(gnus-group-news, gnus-summary-mail-other-window)
(gnus-summary-news-other-window): Remove empty `unwind-protect`.

* lisp/gnus/mm-encode.el (mm-default-file-type): New name

Rename from misleading `mm-default-file-encoding`.
(mm-default-file-encoding): Redefine as obsolete alias.

* lisp/mail/sendmail.el (mail-add-attachment):
* lisp/mh-e/mh-mime.el (mh-minibuffer-read-type):
* lisp/gnus/gnus-art.el (gnus-mime-view-part-as-type-internal):
* lisp/gnus/gnus-dired.el (gnus-dired-attach):
* lisp/gnus/mml.el (mml-generate-mime-1, mml-minibuffer-read-type)
(mml-attach-file): Use the new name.

* lisp/gnus: Quote functions with #'

To get better warnings, try and use #' to quote function names.

* lisp/gnus/canlock.el:
* lisp/gnus/deuglify.el:
* lisp/gnus/gmm-utils.el:
* lisp/gnus/gnus-agent.el:
* lisp/gnus/gnus-art.el:
* lisp/gnus/gnus-bookmark.el:
* lisp/gnus/gnus-cache.el:
* lisp/gnus/gnus-cite.el:
* lisp/gnus/gnus-cus.el:
* lisp/gnus/gnus-delay.el:
* lisp/gnus/gnus-diary.el:
* lisp/gnus/gnus-dired.el:
* lisp/gnus/gnus-draft.el:
* lisp/gnus/gnus-fun.el:
* lisp/gnus/gnus-group.el:
* lisp/gnus/gnus-html.el:
* lisp/gnus/gnus-int.el:
* lisp/gnus/gnus-kill.el:
* lisp/gnus/gnus-mlspl.el:
* lisp/gnus/gnus-msg.el:
* lisp/gnus/gnus-notifications.el:
* lisp/gnus/gnus-picon.el:
* lisp/gnus/gnus-registry.el:
* lisp/gnus/gnus-rfc1843.el:
* lisp/gnus/gnus-salt.el:
* lisp/gnus/gnus-score.el:
* lisp/gnus/gnus-search.el:
* lisp/gnus/gnus-sieve.el:
* lisp/gnus/gnus-srvr.el:
* lisp/gnus/gnus-start.el:
* lisp/gnus/gnus-topic.el:
* lisp/gnus/gnus-undo.el:
* lisp/gnus/gnus-util.el:
* lisp/gnus/gnus-uu.el:
* lisp/gnus/gnus.el:
* lisp/gnus/mail-source.el:
* lisp/gnus/message.el:
* lisp/gnus/mm-archive.el:
* lisp/gnus/mm-decode.el:
* lisp/gnus/mm-url.el:
* lisp/gnus/mm-util.el:
* lisp/gnus/mm-view.el:
* lisp/gnus/mml-sec.el:
* lisp/gnus/mml-smime.el:
* lisp/gnus/mml.el:
* lisp/gnus/nnagent.el:
* lisp/gnus/nndiary.el:
* lisp/gnus/nndoc.el:
* lisp/gnus/nndraft.el:
* lisp/gnus/nnfolder.el:
* lisp/gnus/nnheader.el:
* lisp/gnus/nnmail.el:
* lisp/gnus/nnmaildir.el:
* lisp/gnus/nnmairix.el:
* lisp/gnus/nnmh.el:
* lisp/gnus/nnml.el:
* lisp/gnus/nnrss.el:
* lisp/gnus/nnselect.el:
* lisp/gnus/nnspool.el:
* lisp/gnus/nnvirtual.el:
* lisp/gnus/nnweb.el:
* lisp/gnus/smiley.el:
* lisp/gnus/smime.el:
* lisp/gnus/spam-report.el:
* lisp/gnus/spam-stat.el:
* lisp/gnus/spam-wash.el:
* lisp/gnus/spam.el:

* lisp/gnus/gnus-art.el: Add `event` args and operate at its position.

(gnus-mime-save-part-and-strip)
(gnus-mime-delete-part, gnus-mime-save-part, gnus-mime-pipe-part)
(gnus-mime-view-part, gnus-mime-view-part-as-type)
(gnus-mime-copy-part, gnus-mime-print-part, gnus-mime-inline-part)
(gnus-mime-view-part-as-charset, gnus-mime-view-part-externally)
(gnus-mime-view-part-internally, gnus-article-press-button):
Add `event` arg and operate at its position.

* lisp/gnus: Use `declare`.

* lisp/gnus/nnoo.el (defvoo, deffoo, nnoo-declare, nnoo-import)
(nnoo-map-functions):
* lisp/gnus/nnmaildir.el (nnmaildir--with-nntp-buffer)
(nnmaildir--with-work-buffer, nnmaildir--with-nov-buffer)
(nnmaildir--with-move-buffer, nnmaildir--condcase):
* lisp/gnus/mm-decode.el (mm-with-part):
* lisp/gnus/gnus-msg.el (gnus-setup-message):
* lisp/gnus/gnus-agent.el (gnus-agent-with-fetch, gnus-agent-while-plugged):
* lisp/gnus/mail-source.el (mail-source-set-1, mail-source-value):
Use `declare`.

* lisp/gnus/gnus-util.el (gnus-define-keys): Use `declare`, and also
don't quote `keymap` if it's a variable name.
(gnus-define-keys-1): Reject the case where `keymap` is a variable name.
(gnus-eval-in-buffer-window, gnus-define-keys-safe)
(gnus-define-keymap, gnus-atomic-progn, gnus-with-output-to-file)
(gnus-parse-without-error): Use `declare`.
(gnus-atomic-progn-assign, gnus-atomic-setq): Delete macros.

* lisp/gnus/gnus-undo.el (gnus-undo-register): Drop indent and edebug spec
since they're not really appropriate for a function.

* lisp/gnus/gnus-art.el (gnus--\,@): New macro.
Use it at top-level to construct the `gnus-article-FOO` => `article-FOO`
wrapper functions.
(gnus-with-article-headers, gnus-with-article-buffer): Use `declare`.

Remove unused argument from set_frame_menubar (Bug#45759)

* src/w32menu.c (set_frame_menubar):
* src/xmenu.c (set_frame_menubar): Remove unused argument.
All callers updated.

Also highlight 'conflict' with the warning face

* lisp/vc/vc-git.el (vc-git-dir-printer):
Also highlight 'conflict' with the warning face, like
vc-default-dir-printer does already.

; Use American spelling in etc/NEWS.

auth-source-search doc string fix

* lisp/auth-source.el (auth-source-search): Fix example (bug#36286).

* lisp/tab-line.el (tab-line-new-tab): Use tty menus when supported.

New Rmail option 'rmail-show-message-set-modified'

* lisp/mail/rmail.el (rmail-show-message-set-modified): New
option.
(rmail-show-message-1): If 'rmail-show-message-set-modified' is
non-nil, don't reset the buffer's modified state.  (Bug#45941)

* etc/NEWS: Announce the new option.

Fix vc-hg-rename-file on file names like ~/foo/bar

* lisp/vc/vc-hg.el (vc-hg-rename-file): Use absolute file names,
because hg doesn't like getting file names like "~/foo/bar"
(bug#36932).

Fix interaction between two dired cleanup variables

* lisp/dired.el (dired-clean-up-after-deletion): Kill the buffers
if you have `dired-clean-up-buffers-too' set and
`dired-clean-confirm-killing-deleted-buffers' nil (bug#38037).

Copyright-paperwork-exempt: yes

Improve :foreground description in the manual

* doc/lispref/frames.texi (Font and Color Parameters): Make the
description less confusing (bug#38710).

Add source to sgml-empty-tags

* lisp/textmodes/sgml-mode.el (html-mode): Add "source" as an empty
tag to fix indentation when this element is present (bug#46181).

rmail-summary-mark-deleted optional argument fix

* lisp/mail/rmailsum.el (rmail-summary-mark-deleted): Argument N
is optional, so don't assume that it's a number (bug#39076).

vc-dir-mode-map: Remove the mouse-2 binding

* lisp/vc/vc-dir.el (vc-dir-mode-map):
Remove the mouse-2 binding (bug#13692).
(vc-dir-mode): Update the docstring accordingly.
(vc-dir-status-mouse-map): New variable.
(vc-default-dir-printer): Use it on the state buttons.

* lisp/vc/vc-git.el (vc-git-dir-printer): Same.

Use lexical-binding in mpuz.el

* lisp/play/mpuz.el: Use lexical-binding.  Remove redundant :group
args.
(mpuz-switch-to-window): Minor cleanup.

Use lexical-binding in handwrite.el

* lisp/play/handwrite.el: Use lexical-binding.  Remove redundant
:group args.  Minor cleanups.

(handwrite): Minor cleanups.
(handwrite-set-pagenumber-off, handwrite-set-pagenumber-on): Make
comments into docstrings.

* test/lisp/electric-tests.el: Fix switch to lexical-binding.

(define-electric-pair-test): Don't presume that function values are
self-evaluating.

; * src/process.c (child_signal_read): Don't report EAGAIN as error

; Silence byte-compiler

* lisp/net/sasl-ntlm.el (sasl-ntlm-request):
* lisp/net/sasl.el (sasl-plain-response, sasl-login-response-1)
(sasl-login-response-2, sasl-anonymous-response): Fix warnings
introduced by my previous commit.

Use lexical-binding in sasl.el and add tests

* lisp/net/sasl.el:
* lisp/net/sasl-digest.el:
* lisp/net/sasl-cram.el:
* lisp/net/sasl-ntlm.el: Use lexical-binding.

* test/lisp/net/sasl-tests.el:
* test/lisp/net/sasl-cram-tests.el: New files.

(xref-revert-buffer): Also 'erase-buffer' when handling a user-error

* lisp/progmodes/xref.el (xref-revert-buffer):
Also 'erase-buffer' when handling a user-error (bug#46042).

Support 'operating-system-release' on MS-Windows

* src/w32fns.c (w32_version_string) [WINDOWSNT]: New function.
* src/w32common.h (w32_version_string) [WINDOWSNT]: Add prototype.
* src/editfns.c (init_editfns) [WINDOWSNT]: Produce a non-nil
string with the OS version.

* test/lisp/net/tramp-tests.el (tramp--test-special-characters):

Adapt test for docker.

Use save-mark-and-excursion in query-replace-read-args (bug#45617)

Fix Bug#45518 in compile.el

* lisp/progmodes/compile.el (compilation-get-file-structure):
Avoid call of `file-truename' for remote files.  (Bug#45518)

Improve doc string of 'operating-system-release'

* src/editfns.c (syms_of_editfns) <operating-system-release>: Doc
fix.  (Bug#39940)

Fix previous commit regarding revert-buffer-function

* simple.el (shell-command, shell-command-on-region): Set
revert-buffer-function buffer-locally, not globally.  Also, avoid an
unnecessary call to (current-buffer) by taking advantage of the
closure (bug#46151).

Describe pointer shapes in the manual

* doc/lispref/frames.texi (Pointer Shape): Describe what the
typical pointer shapes are (and add `nhdrag') (bug#39246).

Add a command for redisplay during keyboard macros

* doc/emacs/kmacro.texi (Basic Keyboard Macro): Document it
(bug#39252).

* lisp/kmacro.el (kdb-macro-redisplay): New function.
(kmacro-keymap): Bind it.

Improve fontifying of #| ... |# in `lisp-mode'

* lisp/emacs-lisp/lisp-mode.el (lisp-mode): Fontify the end
delimiter in #| ... |# correctly (bug#39820).

operating-system-release doc string improvement

* src/editfns.c (syms_of_editfns): Be more precise about what
`operating-system-release' is (bug#39940).

flymake-diagnostic-beg/end doc string and error reporting improvement

* lisp/progmodes/flymake.el (flymake-diagnostic-beg):
(flymake-diagnostic-end): Improve doc string and error reporting
(bug#39971).

Fix position in empty buffers in checkdoc-file-comments-engine

* lisp/emacs-lisp/checkdoc.el (checkdoc-file-comments-engine):
Don't give invalid positions on empty buffers (bug#39987).

Set revert-buffer-function in shell command output buffers

* simple.el (shell-command, shell-command-on-region): Set
revert-buffer-function in shell command output buffers (bug#46151).

Mention using buffer-list-update-hook in recentf-mode

* lisp/recentf.el (recentf-mode): Mention using
`buffer-list-update-hook' (bug#46153).

Remove Emacs 21 compat code from sasl.el

* lisp/net/sasl.el (sasl-read-passphrase): Remove compat code;
'read-passwd' is preloaded since Emacs 22.

* lisp/flow-ctrl.el: Use lexical-binding.

* lisp/flow-ctrl.el (enable-flow-control): Minor cleanup.

Use lexical-binding in find-cmd.el and add tests

* lisp/find-cmd.el: Use lexical-binding.
* test/lisp/find-cmd-tests.el: New file.

Slight gravatar.el code clean up

* lisp/image/gravatar.el (gravatar--service-libravatar): Clean the
code up slightly.

Merge branch 'master' of git+ssh://git.sv.gnu.org/srv/git/emacs into trunk

Use lexical-binding in nroff-mode.el

* lisp/textmodes/nroff-mode.el: Use lexical-binding.  Remove
redundant :group args.

* lisp/progmodes/bat-mode.el: Use lexical-binding.

; Fix my previous commit

* lisp/generic-x.el (generic-mode-ini-file-find-file-hook): Fix my
previous commit; for some reason 'function' produces a warning here
while 'quote' does not.

Use lexical-binding in generic-x.el

* lisp/generic-x.el: Use lexical-binding.  Remove redundant :groups.
(generic-rul-mode-setup-function): Prefer setq-local.

Define compat alias obsolete

* lisp/generic-x.el (generic-mode-ini-file-find-file-hook): Define
compat alias introduced after rename in 22.1 obsolete.

Use lexical-binding in all of `lisp/emacs-lisp`

* lisp/emacs-lisp/bindat.el: Use lexical-binding.
(bindat--unpack-group, bindat--length-group, bindat--pack-group):
Declare `last` and `tag` as dyn-scoped.
(bindat-unpack, bindat-pack): Bind `bindat-raw` and `bindat-idx` via
`let` rather than via the formal arglist.

* lisp/emacs-lisp/package-x.el:
* lisp/emacs-lisp/generic.el:
* lisp/emacs-lisp/eieio-opt.el:
* lisp/emacs-lisp/derived.el:
* lisp/emacs-lisp/crm.el: Use lexical-binding.

* lisp/emacs-lisp/helper.el: Use lexical-binding.
(Helper-help-map): Move initialization into declaration.

* lisp/emacs-lisp/regi.el: Use lexical-binding.
(regi-interpret): Remove unused var `tstart`.
Declare `curframe`, `curentry` and `curline` as dyn-scoped.

* lisp/emacs-lisp/shadow.el: Use lexical-binding.
(load-path-shadows-find): Remove unused var `file`.
Tighten a regexp, use `push`.

* lisp/emacs-lisp/tcover-ses.el: Use lexical-binding.  Require `ses`.
Remove correspondingly redundant declarations.
(ses--curcell-overlay): Declare.
(ses-exercise): Use `dlet` and use a properly-prefixed var name.
Fix name of `curcell-overlay` variable.

* lisp/emacs-lisp/unsafep.el: Use lexical-binding.
(unsafep): Bind `unsafep-vars` via `let` rather than via the formal arglist.

Use isearch-tmm-menubar when tmm-menubar is called in isearch-mode (bug#43966)

* lisp/isearch.el (isearch-menu-bar-commands): Add tmm-menubar to defaults.
(isearch-mode-map): Remove remapping of tmm-menubar to isearch-tmm-menubar.

* lisp/tmm.el (tmm-menubar): Call isearch-tmm-menubar in isearch-mode.

* lisp/wdired.el: Minor doc fixes.

Avoid recommending Google

* doc/misc/org.texi (Link Abbreviations):
* lisp/net/webjump.el (webjump-sample-sites):
* lisp/org/ol.el (org-link-shell-confirm-function)
(org-link-elisp-confirm-function):
* lisp/org/org.el (org-highlight-links):
* lisp/wdired.el: Avoid recommending Google.

squash! Avoid recommending Google

* lisp/leim/quail/viqr.el: Use lexical-binding.

* lisp/leim/quail/compose.el: Use lexical-binding.

* lisp/ezimage.el: Use lexical-binding.

* src/fns.c (hash_string): Fix bug#46111

Use `memcpy` instead of an unaligned memory access.  On x86 at least,
GCC turns this `memcpy` into a single `mov`, so it's about as fast.

Add cross-reference to with-eval-after-load

* lisp/subr.el (eval-after-load): Doc fix; add cross-reference to
'with-eval-after-load'.

* lisp/generic-x.el (hosts-generic-mode): Support IPv6 addresses.

Add missing file systems to etc-fstab-generic-mode

* lisp/generic-x.el (etc-fstab-generic-mode): Add entries for missing
file systems.

; * lisp/dired-aux.el (dired-compress-files-alist): Minor doc fix.