The w3 package was removed from GNU ELPA in 2020 as it doesn't run on
a recent Emacs, and development had stopped over a decade before that.
If anyone wants to revive the w3 package, they should look this all
over, but it doesn't make sense for us to maintain this support code.
Ref: https://debbugs.gnu.org/25395

* lisp/net/browse-url.el (browse-url-w3): Make obsolete.
(browse-url--browser-defcustom-type)
(browse-url-default-browser):
* lisp/ffap.el (ffap-url-at-point, ffap-file-at-point):
* lisp/net/newst-plainview.el (newsticker--buffer-do-insert-text):
* lisp/net/newst-reader.el (newsticker-html-renderer)
(newsticker-show-news):
* lisp/net/newst-treeview.el (newsticker--treeview-render-text):
* lisp/org/ol.el (org-store-link):
* lisp/url/url.el (url-retrieve): Remove w3 support code and related
documentation and comments.  (Bug#56435)

* test/lisp/net/browse-url-tests.el
(browse-url-tests-browser-kind): Adjust test for above changes.

* etc/TODO: Remove TODO to install W3.
* doc/misc/org.org (Handling Links): Don't mention W3.
* lisp/msb.el (msb--few-menus, msb--very-many-menus): Check for
eww-mode instead of w3-mode.

* lisp/allout.el (allout-abbreviate-flattened-numbering)
(allout-mode-deactivate-hook):
* lisp/ansi-color.el (ansi-color-unfontify-region):
* lisp/auth-source.el (auth-source-hide-passwords)
(auth-source-user-or-password)
(auth-source-forget-user-or-password):
* lisp/cedet/data-debug.el (data-debug-map):
* lisp/cedet/semantic/grammar.el (semantic-grammar-syntax-table)
(semantic-grammar-map):
* lisp/chistory.el (command-history-map):
* lisp/comint.el (comint-dynamic-complete)
(comint-dynamic-complete-as-filename)
(comint-dynamic-simple-complete):
* lisp/dired-x.el (read-filename-at-point)
(dired-x-submit-report):
* lisp/dos-fns.el (register-name-alist, make-register)
(register-value, set-register-value, intdos, mode25, mode4350):
* lisp/emacs-lisp/bytecomp.el (byte-compile-disable-print-circle):
* lisp/emacs-lisp/chart.el (chart-map):
* lisp/emacs-lisp/package.el (package-menu-view-commentary):
* lisp/emacs-lock.el (toggle-emacs-lock, emacs-lock-from-exiting):
* lisp/erc/erc.el (erc-complete-word):
* lisp/eshell/em-cmpl.el (eshell-cmpl-suffix-list):
* lisp/eshell/esh-util.el (eshell-for):
* lisp/files.el (inhibit-first-line-modes-regexps)
(inhibit-first-line-modes-suffixes):
* lisp/gnus/gnus-msg.el (gnus-outgoing-message-group)
(gnus-debug-files, gnus-debug-exclude-variables):
* lisp/gnus/gnus-registry.el (gnus-registry-user-format-function-M):
* lisp/gnus/gnus.el (gnus-local-domain, gnus-carpal):
* lisp/gnus/nnimap.el (nnimap-split-rule):
* lisp/iimage.el (turn-on-iimage-mode):
* lisp/image.el (image-extension-data, image-library-alist):
* lisp/mail/emacsbug.el (report-emacs-bug-pretest-address):
* lisp/mail/mail-utils.el (rmail-dont-reply-to):
* lisp/mail/mailalias.el (mail-complete-function)
(mail-completion-at-point-function):
* lisp/mail/rmail.el (rmail-dont-reply-to-names)
(rmail-default-dont-reply-to-names):
* lisp/mail/sendmail.el (mail-mailer-swallows-blank-line)
(mail-sent-via):
* lisp/menu-bar.el (menu-bar-kill-ring-save):
* lisp/minibuffer.el (completion-annotate-function)
(minibuffer-local-filename-must-match-map):
* lisp/msb.el (msb-after-load-hooks):
* lisp/obsolete/eieio-compat.el (eieio-defmethod)
(eieio-defgeneric):
* lisp/obsolete/info-edit.el (Info-edit-map):
* lisp/obsolete/starttls.el (starttls-any-program-available):
* lisp/progmodes/cfengine.el (cfengine-mode-abbrevs):
* lisp/progmodes/cwarn.el (turn-on-cwarn-mode):
* lisp/progmodes/make-mode.el (makefile-complete):
* lisp/progmodes/meta-mode.el (meta-complete-symbol)
(meta-mode-map):
* lisp/progmodes/pascal.el (pascal-toggle-completions)
(pascal-last-completions, pascal-show-completions):
* lisp/progmodes/prolog.el (prolog-char-quote-workaround):
* lisp/progmodes/which-func.el (which-func-mode): [FUNCTION]
* lisp/simple.el (count-lines-region, minibuffer-completing-symbol):
* lisp/speedbar.el (speedbar-syntax-table, speedbar-key-map):
* lisp/strokes.el (strokes-report-bug):
* lisp/subr.el (condition-case-no-debug):
* lisp/term/ns-win.el (ns-alternatives-map)
(ns-store-cut-buffer-internal):
* lisp/term/w32-win.el (w32-default-color-map):
* lisp/term/x-win.el (x-cut-buffer-or-selection-value):
* lisp/textmodes/bibtex.el (bibtex-complete)
(bibtex-entry-field-alist):
* lisp/textmodes/reftex-index.el (reftex-index-map)
(reftex-index-phrases-map):
* lisp/textmodes/reftex-sel.el (reftex-select-label-map)
(reftex-select-bib-map):
* lisp/textmodes/reftex-toc.el (reftex-toc-map):
* lisp/textmodes/rst.el (rst-block-face, rst-external-face)
(rst-definition-face, rst-directive-face, rst-comment-face)
(rst-emphasis1-face, rst-emphasis2-face, rst-literal-face)
(rst-reference-face):
* lisp/vc/vc-hooks.el (vc-toggle-read-only):
* lisp/view.el (view-return-to-alist)
(view-return-to-alist-update): Remove many functions and variables
obsolete since 24.1.

* lisp/textmodes/bibtex.el (bibtex-entry-alist): Don't use above
removed variable 'bibtex-entry-field-alist'.
* lisp/cedet/data-debug.el (data-debug-edebug-expr)
(data-debug-eval-expression):
* lisp/emacs-lisp/trace.el (trace--read-args):
* lisp/files-x.el (read-file-local-variable-value):
* lisp/simple.el (read--expression): Don't use above removed variable
'minibuffer-completing-symbol'.
* lisp/textmodes/rst.el (rst-font-lock-keywords): Don't use above
removed variables.
* src/w32fns.c (Fw32_default_color_map): Delete obsolete function.
(syms_of_w32fns): Delete defsubr for above defun.
* src/keyboard.c (syms_of_keyboard) <Vdeferred_action_list>
<Vdeferred_action_function>: Delete DEFVARs.
<Qdeferred_action_function>: Delete DEFSYM.
(syms_of_keyboard_for_pdumper): Adjust for above change.
(command_loop_1): Don't run deferred-action-function hook.
* lisp/subr.el (deferred-action-list, deferred-action-function):
Delete obsoletion statements.
* lisp/emacs-lisp/ert-x.el (ert-simulate-command): Don't run
'deferred-action-list' hook.
* doc/lispref/hooks.texi (Standard Hooks): Delete
'deferred-action-function'.

* lisp/emacs-lisp/lisp.el (field-complete):
* lisp/eshell/em-cmpl.el (eshell-cmpl-initialize):
* lisp/gnus/gnus-msg.el (gnus-inews-insert-gcc):
* lisp/gnus/nnmail.el (nnmail-fancy-expiry-target):
* lisp/mail/mail-utils.el (mail-dont-reply-to):
* lisp/mail/sendmail.el (sendmail-send-it):
* lisp/mail/smtpmail.el (smtpmail-send-it):
* lisp/minibuffer.el (minibuffer-completion-help):
* lisp/progmodes/python.el: Don't use above removed items.
* lisp/emacs-lisp/eieio-core.el:
* lisp/mail/mailalias.el (mail-complete-alist): Doc fixes; don't refer
to above removed items.
; * etc/NEWS: List removed items.

* lisp/desktop.el (desktop-lazy-idle-delay):
* lisp/files.el (dired-kept-versions)
(kept-old-versions, kept-new-versions):
* lisp/filesets.el (filesets-max-submenu-length)
(filesets-max-entry-length, filesets-tree-max-level)
(filesets-query-user-limit):
* lisp/hi-lock.el (hi-lock-file-patterns-range)
(hi-lock-highlight-range):
* lisp/ido.el (ido-max-work-directory-list):
* lisp/image/gravatar.el (gravatar-cache-ttl):
* lisp/imenu.el (imenu-auto-rescan-maxout, imenu-max-items):
* lisp/informat.el (Info-split-threshold):
* lisp/mail/hashcash.el (hashcash-default-payment)
(hashcash-default-accept-payment):
* lisp/mail/mail-hist.el (mail-hist-history-size):
* lisp/mail/smtpmail.el (smtpmail-retries):
* lisp/msb.el (msb-display-most-recently-used):
* lisp/nxml/rng-valid.el (rng-state-cache-distance)
(rng-validate-chunk-size):
* lisp/progmodes/gdb-mi.el (gdb-max-source-window-count):
* lisp/recentf.el (recentf-arrange-by-rules-min-items):
* lisp/simple.el (kill-ring-max, mark-ring-max)
(global-mark-ring-max):
* lisp/tab-line.el (tab-line-tab-name-truncated-max):
* lisp/term.el (term-buffer-maximum-size, term-input-chunk-size):
* lisp/thumbs.el (thumbs-max-image-number)
(thumbs-thumbsdir-max-size, thumbs-relief, thumbs-margin)
(thumbs-image-resizing-step):
* lisp/type-break.el (type-break-interval)
(type-break-good-rest-interval, type-break-query-interval)
(type-break-warning-repeat):
* lisp/vc/compare-w.el (compare-windows-sync-string-size):
* lisp/woman.el (woman-fill-column): Use defcustom :type natnum.

* lisp/emacs-lisp/backtrace.el (backtrace-line-length):
* lisp/doc-view.el (doc-view-conversion-refresh-interval):
Use defcustom :type natnum and allow the nil value.

* lisp/gnus/spam-stat.el (spam-stat-process-directory-age):
Use defcustom :type integer.

* lisp/menu-bar.el (menu-bar-select-buffer): Make obsolete (bug#15651).

* lisp/msb.el (msb--select-buffer): Move function here and rename.
(msb--make-keymap-menu): Use it.

This reverts commit 253e52478c355dc29052c0d21013b8d06b473880.

This is to be fixed in a different way in the next patch.

* lisp/menu-bar.el (menu-bar-select-buffer): Move from
here... (bug#15651).
* lisp/msb.el (menu-bar-select-buffer): ... to here (which is the
only usage in-tree in Emacs).

Remove redundant `:group` args.
(msb--add-to-menu): Strength-reduce `eval` to `symbol-value` and use `push`.
(msb--create-sort-item): Strength-reduce `eval` to `symbol-value`.
(msb-menu-bar-update-buffers): Replace `(lambda...) with a proper closure.

Run "TZ=UTC0 admin/update-copyright".