* lisp/progmodes/compile.el (compilation-mode-map): Remove mention of
compilation-minor-mode-map (bug#43382).

As the comment in the body says:

;; Don't inherit from compilation-minor-mode-map,
;; because that introduces a menu bar item we don't want.
;; That confuses C-down-mouse-3.

and the map actually inherits from special-mode-map.

Copyright-paperwork-exempt: yes

This reverts commit de4f347901adffd07bc9bff028dc073fb3c6df33.

read-file-name already displays a long path when given a default
(like INITIAL in many other prompting functions), so using
format-prompt here is superfluous.

This corrects both the fontification and indentation of these things, fixing
bug #42270.

* lisp/progmodes/cc-engine.el (c-do-declarators): Skip over "hangon keys" and
noise macros whilst scanning a putative C++ function.
(c-forward-decl-or-cast-1): When checking for typeless functions, skip over
"hangon keys" and noise macros.

* lisp/progmodes/cc-mode.el (c-fl-decl-end): Deal with certain invalid
"nested declarators" by scanning over them with a recursive call of
c-fl-decl-end.

* lisp/progmodes/cc-vars.el (c-noise-macro-names)
(c-noise-macro-with-parens-names): State in the doc strings that if either of
these is a regexp, it must have a submatch 1 which matches the noise macro
exactly.

* lisp/progmodes/cl-font-lock.el (cl-font-lock-built-in-mode): Put
in the tools group to avoid a compilation warning.

These sometimes gave rise to the tail of a buffer being "stringed out".

* lixp/progmodes/cc-defs.el (c-will-be-unescaped): New macro.

* lisp/progmodes/cc-mode.el (c-before-change-check-unbalanced-strings)
(c-after-change-mark-abnormal-strings): Fix bugs in the handling of string
fence syntax-table text properties.

366a97c980 (origin/emacs-27) Avoid crashes when trying to load bad GI...
7938713105 C++ Mode: handle comma separated brace initializers.
2b95300cf8 * lisp/display-fill-column-indicator.el: Fix bug#41145

* lisp/xwidget.el (xwidget-webkit-save-as-file):
* lisp/vc/vc.el (vc-backend-for-registration, vc-delete-file)
(vc-rename-file):
* lisp/vc/ediff-ptch.el (ediff-prompt-for-patch-file):
* lisp/vc/diff-mode.el (diff-tell-file-name):
* lisp/progmodes/etags.el (visit-tags-table)
(visit-tags-table-buffer):
* lisp/misearch.el (multi-isearch-read-files):
* lisp/mail/rmailmm.el (rmail-mime-save):
* lisp/help-fns.el (doc-file-to-man, doc-file-to-info):
* lisp/gnus/gnus-bookmark.el (gnus-bookmark-load):
* lisp/files.el (write-file, basic-save-buffer):
* lisp/dired.el (dired-read-dir-and-switches):
* lisp/bookmark.el (bookmark-save, bookmark-load):
* lisp/abbrev.el (write-abbrev-file, abbrev-edit-save-to-file):
Use format-prompt in read-file-name calls that have a default.

* lisp/progmodes/prolog.el (prolog-help-on-predicate):
* lisp/cmuscheme.el (scheme-trace-procedure):
* lisp/calendar/todo-mode.el (todo-convert-legacy-files): Use
format-prompt in some read-string calls (that have default values).

* lisp/printing.el (pr-interactive-regexp): No need to use "" as
the default value, because that's the default default value.
(pr-interactive-n-up): Use read-number instead of read-string and
then parsing the string.

* lisp/woman.el (woman-file-name):
* lisp/wid-edit.el (widget-file-prompt-value)
(widget-coding-system-prompt-value):
* lisp/w32-fns.el (w32-set-system-coding-system):
* lisp/vc/vc.el (vc-print-root-log):
* lisp/vc/vc-annotate.el (vc-annotate):
* lisp/vc/emerge.el (emerge-read-file-name):
* lisp/vc/ediff.el (ediff-directories)
(ediff-directory-revisions, ediff-directories3)
(ediff-merge-directories, )
(ediff-merge-directories-with-ancestor)
(ediff-merge-directory-revisions)
(ediff-merge-directory-revisions-with-ancestor)
(ediff-merge-revisions, ediff-merge-revisions-with-ancestor)
(ediff-revision):
* lisp/vc/ediff-util.el (ediff-toggle-regexp-match):
* lisp/vc/ediff-mult.el (ediff-filegroup-action):
* lisp/vc/add-log.el (prompt-for-change-log-name):
* lisp/textmodes/table.el (table-insert-row-column)
(table-span-cell, table-split-cell-horizontally)
(table-split-cell, table-justify, table-generate-source)
(table-insert-sequence, table-capture)
(table--read-from-minibuffer, table--query-justification):
* lisp/textmodes/sgml-mode.el (sgml-tag, sgml-tag-help):
* lisp/textmodes/reftex-ref.el (reftex-goto-label):
* lisp/textmodes/refer.el (refer-get-bib-files):
* lisp/textmodes/css-mode.el (css-lookup-symbol):
* lisp/term.el (serial-read-name, serial-read-speed):
* lisp/speedbar.el (speedbar-change-initial-expansion-list):
* lisp/simple.el (previous-matching-history-element)
(set-variable):
* lisp/ses.el (ses-read-cell, ses-set-column-width):
* lisp/replace.el (query-replace-read-from)
(occur-read-primary-args):
* lisp/rect.el (string-rectangle, string-insert-rectangle):
* lisp/progmodes/tcl.el (tcl-help-on-word):
* lisp/progmodes/sh-script.el (sh-set-shell):
* lisp/progmodes/python.el (python-eldoc-at-point):
* lisp/progmodes/octave.el (octave-completing-read)
(octave-update-function-file-comment, octave-insert-defun):
* lisp/progmodes/inf-lisp.el (lisp-symprompt):
* lisp/progmodes/cperl-mode.el (cperl-info-on-command)
(cperl-perldoc):
* lisp/progmodes/compile.el (compilation-find-file):
* lisp/net/rcirc.el (rcirc-prompt-for-encryption):
* lisp/net/eww.el (eww):
* lisp/net/browse-url.el (browse-url-with-browser-kind):
* lisp/man.el (man):
* lisp/mail/sendmail.el (sendmail-query-user-about-smtp):
* lisp/mail/mailalias.el (build-mail-aliases):
* lisp/mail/mailabbrev.el (merge-mail-abbrevs)
(rebuild-mail-abbrevs):
* lisp/locate.el (locate-prompt-for-search-string):
* lisp/isearch.el (isearch-occur):
* lisp/international/ogonek.el (ogonek-read-encoding)
(ogonek-read-prefix):
* lisp/international/mule.el (read-buffer-file-coding-system)
(set-terminal-coding-system, set-keyboard-coding-system)
(set-next-selection-coding-system, recode-region):
* lisp/international/mule-cmds.el ()
(universal-coding-system-argument, search-unencodable-char)
(select-safe-coding-system-interactively):
* lisp/info.el (Info-search, Info-search-backward, Info-menu):
* lisp/info-look.el (info-lookup-interactive-arguments):
* lisp/imenu.el (imenu--completion-buffer):
* lisp/ibuf-ext.el (mode, used-mode, ibuffer-mark-by-mode):
* lisp/hi-lock.el (hi-lock-unface-buffer)
(hi-lock-read-face-name):
* lisp/help.el (view-emacs-news, where-is):
* lisp/help-fns.el (describe-variable, describe-symbol)
(describe-keymap):
* lisp/gnus/mm-decode.el (mm-save-part):
* lisp/gnus/gnus-sum.el (gnus-summary-browse-url):
* lisp/gnus/gnus-group.el (gnus-group--read-bug-ids)
(gnus-group-set-current-level):
* lisp/frame.el (make-frame-on-monitor)
(close-display-connection, select-frame-by-name):
* lisp/format.el (format-encode-buffer, format-encode-region):
* lisp/files.el (recode-file-name):
* lisp/files-x.el (read-file-local-variable)
(read-file-local-variable-value, )
(read-file-local-variable-mode):
* lisp/ffap.el (ffap-menu-ask):
* lisp/faces.el (face-read-string):
* lisp/facemenu.el (facemenu-set-charset):
* lisp/erc/erc-dcc.el (erc-dcc-do-GET-command):
* lisp/emulation/edt-mapper.el (edt-mapper):
* lisp/emacs-lisp/trace.el (trace--read-args)
(trace-function-foreground, trace-function-background):
* lisp/emacs-lisp/smie.el (smie-config-set-indent):
* lisp/emacs-lisp/re-builder.el (reb-change-syntax):
* lisp/emacs-lisp/package.el (describe-package):
* lisp/emacs-lisp/find-func.el (read-library-name)
(find-function-read):
* lisp/emacs-lisp/ert.el (ert-read-test-name)
(ert-run-tests-interactively):
* lisp/emacs-lisp/disass.el (disassemble):
* lisp/emacs-lisp/debug.el (debug-on-entry)
(debug-on-variable-change):
* lisp/emacs-lisp/advice.el (ad-read-advised-function)
(ad-read-advice-class, ad-read-advice-name, ad-read-regexp):
* lisp/dired-x.el (dired--mark-suffix-interactive-spec):
* lisp/dired-aux.el (dired-diff):
* lisp/cus-edit.el (custom-variable-prompt, customize-mode)
(customize-changed-options):
* lisp/completion.el (interactive-completion-string-reader):
* lisp/calendar/timeclock.el (timeclock-ask-for-project):
* lisp/calc/calcalg3.el (calc-get-fit-variables):
* lisp/calc/calc-store.el (calc-edit-variable):
* lisp/calc/calc-bin.el (calc-word-size):
* lisp/bookmark.el (bookmark-set-internal):
* lisp/abbrev.el (read-abbrev-file): Use `format-prompt' for
prompting (bug#12443).

* lisp/progmodes/cperl-mode.el (cperl-init-faces): Fontify hashes
and arrays (%foo and @foo) before the keywords, since the keyword
regexps are "wider" and the hash/array regexp just match those two
things (bug#22867).