* lisp/newcomment.el: Allow 'comment-continue' with whitespace (bug#47167)

* lisp/newcomment.el (comment-region-default-1): Still use 'comment-continue'
as a string with whitespace even when 'comment-padright' returns nil.

* lisp/simple.el (next-error-quit-window): New function (bug#44611).

(next-error-found-function): Add it as a choice.

; ChangeLog.3 fix

admin/make-tarball.txt:
"It's best not to commit these files until the release is actually made"

* admin/make-tarball.txt: Be kind to people merging branches.

Merge from origin/emacs-27

d5b160d7cc (tag: emacs-27.2-rc1, origin/emacs-27) Prepare the Emacs 2...
216bd67a4f ; * admin/make-tarball.txt: Advise to remove stale subdire...

# Conflicts:
# ChangeLog.3
# README
# configure.ac
# etc/AUTHORS
# etc/NEWS
# lisp/ldefs-boot.el
# msdos/sed2v2.inp
# nt/README.W32

; Merge from origin/emacs-27

The following commit was skipped:

7ae4588bb4 Document that `buffer-string' retains text properties

Merge from origin/emacs-27

a7f95d5244 Remove duplicate @table item from ELisp manual
be1b3512f7 Fix reference to 'diff-font-lock-syntax' in diff-mode docu...

; Merge from origin/emacs-27

The following commit was skipped:

b9ec6111e2 Fix buffer overflow in xbm_scan (bug#47094)

Merge from origin/emacs-27

f60eb988f6 Fix typos and omissions for (elisp)Button Buffer Commands
876b95bf90 Teach Rmail about NBSP in "Re:"

# Conflicts:
# lisp/mail/rmail.el

; Merge from origin/emacs-27

The following commit was skipped:

a2960025e8 Revert "* lisp/mouse.el: Fix mouse-1-clock-follows-mouse =...

Prepare the Emacs 27.2 release.

* etc/HISTORY: Update for Emacs 27.2.

* README:
* configure.ac:
* nt/README.W32:
* msdos/sed2v2.inp: Set version to 27.2

Optimise tail calls in `and` and `or` forms in `cl-labels` functions

* lisp/emacs-lisp/cl-macs.el (cl--self-tco): Handle `and` and `or`.
* test/lisp/emacs-lisp/cl-macs-tests.el (cl-macs--labels):
Add test cases.

Extend handled events in 'while-no-input-ignore-events' (Bug#47205)

* etc/NEWS: Mention changes to 'while-no-input-ignore-events'.

* src/keyboard.c (kbd_buffer_store_buffered_event): Handle also
Qfile_notify and Qdbus_event as ignore_event.  (Bug#47205)

; * admin/make-tarball.txt: Advise to remove stale subdirectories.

Add comint-password-prompt-regexp test for "zip -e ..."

* test/lisp/comint-tests.el (comint-testsuite-password-strings):
Add test for "zip -e ...".  (Bug#47209)

Compute chart-face-list dynamically

* lisp/emacs-lisp/chart.el (chart-face-list): Allow a function as
the value (bug#47133) so that we can compute the faces dynamically
on different displays.
(chart--face-list): New function.
(chart-draw-data): Use it.

Document that `buffer-string' retains text properties

* doc/lispref/text.texi (Buffer Contents): Mention text properties
in the `buffer-string' documentation.
* src/editfns.c (Fbuffer_string): Mention text properties in the
doc string (bug#47220).

(cherry picked from commit 60af754170f22f5d25510af069ed0ebfec95f992)

Fix breaking undo-test

Make "not found" message in dictionary less misleading

* lisp/net/dictionary.el (dictionary-do-search): Don't say there
are more words when there aren't (bug#47056).

Make memory-report work with buffer-local unbound vars

* lisp/emacs-lisp/memory-report.el (memory-report--buffer-data):
Protect against buffer-local unbound variables (bug#47057).

Fix sorting in speedbar sub-groups

* lisp/speedbar.el (speedbar-prefix-group-tag-hierarchy): Sort
entries in sub-groups (bug#47073).

lisp/cedet/pulse.el: Use color.el

* lisp/cedet/pulse.el: (pulse-int-to-hex): Remove function.
(pulse-color-values-to-hex): Remove function.
(pulse-lighten-highlight): Remove function.
(pulse-momentary-iteration): Add variable.
(pulse-momentary-highlight-overlay): Use color-gradient from color.el.
(pulse-tick): Receive colors and update overlay background (bug#47083).

cperl-mode: Don't interpret y_ as start of y// function.

* lisp/progmodes/cperl-mode.el (cperl-find-pods-heres): Avoid
treating underscores as word-terminators.

* test/lisp/progmodes/cperl-mode-tests.el
(cperl-test-bug-47112): Test case for that bug (bug#47112).

Fix uniquify-trailing-separator-p + uniquify-strip-common-suffix

(uniquify-item): New slot 'original-dirname'.
(uniquify-rationalize-file-buffer-names): Use new slot.
(uniquify-rationalize): Use new slot.
(uniquify-get-proposed-name): New optional argument 'original-dirname'
to properly add a trailing separator when the corresponding user option
is set and the dirname is an existing directory (bug#47132).

Fix problem of trashing files to an inconsistent trash directory

* lisp/files.el (move-file-to-trash): Allow moving files to trash
even if there's a file in trash with the same name (but no entry
in info) (bug#47135).

Autoload 'mouse-wheel-mode'

* lisp/mwheel.el (mouse-wheel-mode): Autoload, since the mode can
be used (but isn't preloaded) when there isn't any window system
(bug#47162).

Recognise "Verify password" as a password prompt

* lisp/comint.el (comint-password-prompt-regexp): Also react to
"Verify password" (output by "zip -e") (bug#47209).

Document that `buffer-string' retains text properties

* doc/lispref/text.texi (Buffer Contents): Mention text properties
in the `buffer-string' documentation.
* src/editfns.c (Fbuffer_string): Mention text properties in the
doc string (bug#47220).

Don't pre-load facemenu

* lisp/facemenu.el (facemenu-add-face-function): Move to avoid a
compilation warning.
(facemenu-color-alist): Made obsolete.

* lisp/faces.el (read-color): Don't use it.

* lisp/loadup.el ("emacs-lisp/syntax"): Don't load facemenu.

* lisp/wid-edit.el (color): Don't use facemenu-color-alist.
(widget-color--choose-action): Require facemenu.
(widget-color-action): Ditto.

* lisp/progmodes/cperl-mode.el (facemenu): Require.

* lisp/textmodes/sgml-mode.el (facemenu): Require.

Unbind `M-o' and add new `C-x x f' binding

* doc/lispref/modes.texi (Other Font Lock Variables):
`font-lock-fontify-block' is no longer bound.
* lisp/bindings.el (ctl-x-x-map): Bind `font-lock-update'.

* lisp/font-lock.el (font-lock-update): New command written by
Gregory Heytings <gregory@heytings.org>.

* lisp/loadup.el: Remove transitional experimental code.

* lisp/textmodes: Use lexical-binding

* lisp/textmodes/enriched.el: Use lexical-binding.
(enriched-mode): Use `delete-dups` to avoid `add-to-list` on
a local variable.

* lisp/textmodes/makeinfo.el: Use lexical-binding.
(makeinfo-region): Remove unused var `filename-or-header`.

* lisp/textmodes/refbib.el: Use lexical-binding.
(r2b-put-field): Remove unused var `multi-line`.
(r2b-barf-output): Remove unused var `match`.

* lisp/textmodes/refer.el: Use lexical-binding.
(refer-find-entry-internal): Remove unused vars `old-buffer` and `found`.

* lisp/textmodes/reftex-auc.el: Use lexical-binding.
(LaTeX-add-bibitems): Declare function.
(reftex-plug-into-AUCTeX): Use `add-function` and `advice-add` so we
can properly unplug.

* lisp/textmodes/reftex-cite.el: Use lexical-binding.
(reftex-create-bibtex-file): Remove unused var `file`.
(reftex--found-list): Declare var.
(reftex-offer-bib-menu): Rename local var to `reftex--found-list`.

* lisp/textmodes/reftex-dcr.el: Use lexical-binding.
(reftex-use-itimer-in-xemacs): Delete XEmacs-only var.
(reftex-toggle-auto-view-crossref): Delete XEmacs-only code.
(reftex-start-itimer-once): Delete XEmacs-only function.

* lisp/textmodes/reftex-global.el: Use lexical-binding.
(reftex-isearch-push-state-function): Use a closure instead of `(lambda).

* lisp/textmodes/reftex-index.el: Use lexical-binding.
(mark-active, transient-mark-mode): Delete var declarations.
(reftex-index-mode-map): Remove XEmacs-only code.
Use `mapc` so we can use closures instead of hand-built lambdas.
(reftex-index-next, reftex-index-previous): Tweak interactive spec to
remove unused prefix arg and mark it as a motion command.
(reftex-index-phrases-font-lock-keywords)
(reftex-index-phrases-font-lock-keywords): Move initialization into
declaration.
(reftex-index-initialize-phrases-buffer, reftex-index-phrases-mode)
reftex-index-phrases-apply-to-region: Remove XEmacs-only code.
(TeX-master): Remove redundant declaration.
(reftex--chars-first): Rename dynvar from `chars-first`.  Adjust all uses.

* lisp/textmodes/reftex-parse.el: Use lexical-binding.

* lisp/textmodes/reftex-ref.el: Use lexical-binding.
(reftex-label): Remove always-nil var `text`.
(reftex-refstyle): Declare before first use.
(<toplevel>): Use closures rather than `eval` when building commands from
`reftex-ref-style-alist`.

* lisp/textmodes/reftex-sel.el: Use lexical-binding.
(reftex-select-label-mode-map, reftex-select-bib-mode-map):
Use `mapc` so we can use closures instead of hand-built lambdas.
(reftex-select-label-mode, reftex-select-bib-mode): Remove XEmacs-only code.
(reftex-select-data, reftex-select-prompt, reftex-refstyle):
Move declaration before first use.
(reftex--found-list, reftex--cb-flag, reftex--last-data)
(reftex--call-back, reftex--help-string): Move declaration before use,
and rename by adding `reftext--` prefix.  Adjust all uses in this file.
For `reftex--found-list` adjust corresponding uses in `reftex-cite.el`.
(reftex-select-item): Explicitly let-bind them.
Remove XEmacs-only code.

* lisp/textmodes/reftex-toc.el: Use lexical-binding.
(reftex-toc-mode-map, reftex-toc-mode, reftex-toc-restore-region)
(reftex-toc-next, reftex-toc-previous, reftex-toc-next-heading)
(reftex-toc-previous-heading, reftex-toggle-auto-toc-recenter
(reftex-make-separate-toc-frame): Remove XEmacs-only code.

* lisp/textmodes/reftex-vars.el: Use lexical-binding.

* lisp/textmodes/reftex.el: Use lexical-binding.
(reftex-mode-map, reftex-mode, reftex-fontify-select-label-buffer)
(reftex-verified-face): Remove XEmacs-only code.
(reftex-region-active-p, reftex-overlay-put, reftex-move-overlay)
(reftex-make-overlay, reftex-get-buffer-visiting, reftex-delete-overlay):
Redefine as obsolete aliases.  Replace all callers.
(current-message): Remove XEmacs-only definition.

* lisp/textmodes/remember.el: Use lexical-binding.

* lisp/textmodes/table.el (<toplevel>): Use closures rather than `(lambda)
to build commands.

* lisp/textmodes/texinfmt.el: Use lexical-binding.
(texinfo-example-start): Declare var.
(texinfo-format-region, texinfo-format-buffer-1): Remove unused var
`last-input-buffer`.
(texinfo-format-scan): Use `dlet` to bind `whitespace-silent`.
(texinfo-optional-braces-discard, texinfo-format-parse-line-args)
(texinfo-format-parse-args): Remove unused var `start`.
(texinfo-multitable-widths): Remove unused var `start-of-templates`.
(texinfo-multitable-item): Strength-reduce `eval` to `symbol-value`.
(texinfo-alias): Remove unused vars `start` and `args`.
(texinfo-defun-type symbol-property): Change the car to help the type
symbol rather than an expression returning it.
(texinfo-format-deffn): Remove corresponding `eval`.
(texinfo-clear): Remove unused var `value`.
(texinfo-format-ifeq): Remove unused var `end`.

* lisp/textmodes/texinfo.el: Use lexical-binding.
(tex-show-print-queue): Declare function.

* lisp/textmodes/texnfo-upd.el: Use lexical-binding.
(texinfo-start-menu-description): Remove unused var `end`.
(texinfo-insert-node-lines): Remove unused var `beginning-marker`.
(texinfo-multiple-files-update): Remove unused vars `next-node-name`
and `previous-node-name`.

* lisp/textmodes/two-column.el: Use lexical-binding.

Leave signaling the exact error to cl-generic's internals

* lisp/progmodes/project.el (project-root): Extract default
definition to a new method, predicated on a context
(https://lists.gnu.org/archive/html/emacs-devel/2021-03/msg00771.html).

* lisp/emacs-lisp/benchmark.el (benchmark-call): New function

(benchmark-run, benchmark-run-compiled, benchmark): Use it.
(benchmark--adaptive): New internal function.

* lisp/tab-line.el: Face cleanup.

* lisp/tab-bar.el: New faces and face options.

* lisp/tab-bar.el (tab-bar-tab-group-current)
(tab-bar-tab-group-inactive, tab-bar-tab-ungrouped): New deffaces.
(tab-bar-tab-face-function): New defcustom.
(tab-bar-tab-face-default): New function.
(tab-bar-tab-name-format-default): Use it.
(tab-bar-tab-group-format-default): Use tab-bar-tab-group-inactive face.
(tab-bar-tab-group-face-function): New defcustom.
(tab-bar-tab-group-face-default): New function.
(tab-bar--format-tab-group): Add new arg 'current-p'.
(tab-bar-format-tabs-groups): Prepend current group name before first tab.
Override tab-bar-tab-face-function with tab-bar-tab-group-face-function.

Stop project-root from going into infinite recursion

* lisp/progmodes/project.el (project--within-roots-fallback):
New variable.
(project-root, project-roots): Use it (bug#47168).

Remove duplicate @table item from ELisp manual

* doc/lispref/objects.texi (Special Read Syntax): Remove duplicate
item "#@N" from the table of Special Read Syntax.  (Bug#47200)

; Remove traces from tramp-tests.el

New commands xref-next-line-no-show and xref-prev-line-no-show (bug#44611)

* lisp/progmodes/xref.el (xref-next-line-no-show)
(xref-prev-line-no-show): New commands.
(xref-next-line, xref-prev-line): Use them.

Minor fixes

* lisp/frame.el (set-frame-property--interactive): Remove '(point)'
that makes no sense as the default value.  (Bug#9970)

* lisp/simple.el (next-error-found-function): Move defcustom
closer to function 'next-error-found' where it's used.

* lisp/tab-bar.el (tab-bar-select-tab): Support negative arg.

* lisp/tab-bar.el: Simplify internal functions.

* lisp/tab-bar.el (tab-bar-tabs-set): New function.
(tab-bar-tabs): Use tab-bar--current-tab-find and tab-bar-tabs-set.
(tab-bar--tab): Use tab-bar--current-tab-find.
(tab-bar--current-tab): Remove unused line (assq 'current-tab ...)
because there is no current-tab when it's called.  Remove unused arg 'frame'.
(tab-bar--current-tab-find): Simplify.
(tab-bar-move-tab-to, tab-bar-move-tab-to-frame)
(tab-bar-new-tab-to, tab-bar-close-tab)
(tab-bar-close-other-tabs, tab-bar-undo-close-tab)
(tab-switcher-delete-from-list): Use tab-bar-tabs-set
instead of set-frame-parameter.
(tab-bar-close-group-tabs): Simplify using tab-bar--current-tab-find
without arg.

Fix problem of image-tests.el on emba

* test/README: Mention $EMACS_TEST_DIRECTORY.

* test/lisp/image-tests.el (image-tests--emacs-images-directory):
Use `data-directory', for runs w/o of make.
(image-type/from-filename): Check for `image-load-path'.

Fix problem in Tramp running two async processes in parallel

* lisp/net/tramp-integration.el
(tramp-compile-disable-ssh-controlmaster-options): New defun.  Add
it to `compilation-mode-hook'.  (Bug#45518)

* lisp/progmodes/compile.el (compilation-get-file-structure):
Revert commit 4ce5646d59, it isn't needed.

; Further traces in tramp-tests.el

; Trace variables in tramp-tests.el

* etc/themes/modus-themes.el: Bump version for GNU ELPA release

(News:): New section.

Add minibuffer input support to commands that set the frame size

* lisp/frame.el (set-frame-property--interactive): Internal function to
produce the interactive form of `set-frame-width' and
`set-frame-height'.  Offer the current size as default.  (Bug#9970)
* src/frame.c (Fset_frame_height): Modify to call
`set-frame-property--interactive'.
(Fset_frame_width): Modify to call `set-frame-property--interactive'.
* doc/lispref/frames.texi (Frame Size): Update the manuals.
* etc/NEWS: Advertise the change (bug#9970).

* lisp/tab-bar.el (tab-bar-new-tab-group): New defcustom.

(tab-bar--current-tab, tab-bar-new-tab-to, tab-bar-duplicate-tab): Use it.

* lisp/tab-bar.el (tab-bar-tab-group-format-function): New defcustom.

(tab-bar-tab-group-default): New function.
(tab-bar-tab-group-format-default, tab-bar-format-tabs-groups)
(tab-bar-change-tab-group, tab-bar-close-group-tabs): Use it.

* CONTRIBUTE: Refer to gnulib for request-assign.future.

The vast majority of the exchanges on this topic are "please send me
the form; ok I sent you the form", and there's no need to involve a
mailing list for that.

Make the `kbd` macro work in both Emacs-26 and Emacs-28

This is so that elpa.gnu.org's Emacs-26 can successfully build the
Info version of it for the GNU ELPA package.

Improve command completion in tramp-crypt.el

* lisp/net/tramp-crypt.el (tramp-crypt-command-completion-p):
Rename from `tramp-crypt-enabled-p'.  Handle
`tramp-crypt-remove-directory' special.

; Silence byte-compiler after previous commit

* lisp/textmodes/refill.el: Use lexical-binding.

* lisp/cedet: Convert remaining files to lexical-binding

Remove a few more redundant `:group` args.
Make use of lexical scoping to replace `(lambda...) with proper closures.

* lisp/cedet/ede/custom.el (ede-project-sort-targets-list):
Use `dotimes` and replace `(lambda..) with closures.

* lisp/cedet/ede/proj-comp.el (proj-comp-insert-variable-once):
* lisp/cedet/ede/pmake.el (ede-pmake-insert-variable-once):
Remove unused var `addcr`.

* lisp/cedet/semantic/complete.el: Use lexical-binding.
(semantic-displayer-show-request): Remove unused var `typing-count`.
Use `equal` instead of `stringp+string=`.

* lisp/cedet/semantic/db-ebrowse.el: Use lexical-binding.
(semanticdb-create-ebrowse-database): Remove unused vars `mma` and `regexp`.
(semanticdb-ebrowse-strip-trees): Remove unused var `class` and `filename`.
(semanticdb-ebrowse-add-globals-to-table): Remove unused var `fname`.

* lisp/cedet/semantic/db-find.el: Use lexical-binding.
(semanticdb-find-adebug-insert-scanned-tag-cons): Remove always-nil var
`tip`.

* lisp/cedet/semantic/db-global.el: Use lexical-binding.
(semanticdb-enable-gnu-global-databases): Access local var
`semantic--ih` by sticking its value in the code passed to `eval`
rather than by dynamic scoping.

* lisp/cedet/semantic/db-typecache.el: Use lexical-binding.
(semanticdb-db-typecache-dump): Remove unused var `junk`.

* lisp/cedet/semantic/debug.el: Use lexical-binding.

* lisp/cedet/semantic/dep.el: Use lexical-binding.
(semantic-add-system-include): Avoid `add-to-list` on a local variable.
Access local var `value` by sticking its value in the code passed to
`eval` rather than by dynamic scoping.
(semantic-remove-system-include): Don't use `delete` on a list received
from elsewhere.
Access local var `value` by sticking its value in the code passed to
`eval` rather than by dynamic scoping.
(semantic-reset-system-include): Simplify a bit.

* lisp/cedet/semantic/ede-grammar.el: Use lexical-binding.
(project-compile-target): Remove unused vars `csrc` and `cb`.
Use `cl-incf`.  Remove apparently unneeded `with-no-warnings`.

* lisp/cedet/semantic/edit.el: Use lexical-binding.
(semantic-edits-change-over-tags): Remove unused var `inner-start`.
(semantic-edits-incremental-parser-1): Silence warnings about
intentionally unused var `last-cond`.

* lisp/cedet/semantic/fw.el: Use lexical-binding.
(recentf-exclude, semantic-init-hook, ede-auto-add-method)
(flymake-start-syntax-check-on-find-file, auto-insert): Declare vars.

* lisp/cedet/semantic/ia-sb.el: Use lexical-binding.
(semantic-ia-sb-key-map): Move initialization into declaration.
(semantic-ia-sb-more-buttons): Remove unused var `idx`.
(semantic-ia-sb-line-path): Simplify `if` -> `or`.

* lisp/cedet/semantic/idle.el (semantic-idle-breadcrumbs--tag-function):
Make it a function returning a closure.

* lisp/cedet/semantic/senator.el: Use lexical-binding.
(senator-search-set-tag-class-filter): Replace `(lambda..) with a closure.

* lisp/cedet/semantic/sort.el: Use lexical-binding.
(semanticdb-search-system-databases): Declare var.
(semantic-tag-external-member-children-default): Replace `(lambda..)
with a closure.

* lisp/cedet/semantic/tag-ls.el: Use lexical-binding.
(semantic-tag-protection-default, semantic-tag-abstract-p-default):
Simplify with `member`.

* lisp/cedet/semantic/util.el: Use lexical-binding.
(semantic-something-to-tag-table): Declare function
`semanticdb-abstract-table--eieio-childp` called via `cl-typep`.

* lisp/cedet/semantic/bovine/scm.el (semantic-default-scheme-setup):
Remove duplicate setting of `imenu-create-index-function`.

* lisp/cedet/semantic/decorate/mode.el (semantic-decoration-build-style-menu):
Replace `(lambda..) with a closure.

* lisp/cedet/srecode/cpp.el (srecode-semantic-apply-tag-to-dict):
Remove always-t variable `member`.

* lisp/cedet/srecode/mode.el (srecode-minor-mode-templates-menu):
Replace `(lambda..) with a closure.  Use `push`.

* lisp/cedet/semantic/chart.el: Use lexical-binding.
* lisp/cedet/semantic/db-debug.el: Use lexical-binding.
* lisp/cedet/semantic/db-el.el: Use lexical-binding.
* lisp/cedet/semantic/db-file.el: Use lexical-binding.
* lisp/cedet/semantic/db-javascript.el: Use lexical-binding.
* lisp/cedet/semantic/db-mode.el: Use lexical-binding.
* lisp/cedet/semantic/db-ref.el: Use lexical-binding.
* lisp/cedet/semantic/decorate.el: Use lexical-binding.
* lisp/cedet/semantic/doc.el: Use lexical-binding.
* lisp/cedet/semantic/find.el: Use lexical-binding.
* lisp/cedet/semantic/format.el: Use lexical-binding.
* lisp/cedet/semantic/html.el: Use lexical-binding.
* lisp/cedet/semantic/ia.el: Use lexical-binding.
* lisp/cedet/semantic/imenu.el: Use lexical-binding.
* lisp/cedet/semantic/java.el: Use lexical-binding.
* lisp/cedet/semantic/mru-bookmark.el: Use lexical-binding.
* lisp/cedet/semantic/symref.el: Use lexical-binding.
* lisp/cedet/semantic/tag-file.el: Use lexical-binding.
* lisp/cedet/semantic/tag-write.el: Use lexical-binding.
* lisp/cedet/semantic/texi.el: Use lexical-binding.
* lisp/cedet/semantic/util-modes.el: Use lexical-binding.

Init archive and add noconfirm to 'package-install-selected-packages'

* lisp/emacs-lisp/package.el (package-install-selected-packages):
Add call to 'package--archives-initialize' and add optional argument
NOCONFIRM to skip user confirmation when installing packages.  (Bug#47124)

* lisp/vc/ediff-vers.el: Remove XEmacs compat code.

Use lexical-binding in expand.el

* lisp/expand.el: Use lexical-binding.  Remove redundant :group args.

* lisp/help-macro.el: Use lexical-binding.

Add three new tests for image.el

* test/lisp/image-tests.el (image-find-image)
(image-type-from-file-name, image-type/from-filename): New tests.

* lisp/wid-edit.el (widget-field): Add subtle border to face.

Revert "* lisp/calendar/appt.el (appt-activate): Set the local `write-file-functions`"

This reverts commit 587a97bcb23bc6ea429ab790efa03f2260a9bca8.
We really do want to affect the global part of the hook.
Reported by Gabriel <gabriel376@hotmail.com>.

* lisp/tab-bar.el: Tab groups can be displayed with tab-bar-format-tabs-groups

* lisp/tab-bar.el (tab-bar-format): Turn defvar into defcustom.
Add :options and force-mode-line-update in :set.
(tab-bar--format-tab): New function refactored from tab-bar-format-tabs.
(tab-bar-format-tabs): Move most of code to tab-bar--format-tab and call it.
(tab-bar-tab-group-format-function): New defcustom.
(tab-bar-tab-group-format-default): New function.
(tab-bar--format-tab-group, tab-bar-format-tabs-groups): New functions.
(tab-bar-format-align-right, tab-bar-format-global): Shorten id.
(tab-bar-change-tab-group): Add refs to tab-bar-format in docstring.

* lisp/tab-line.el: Update docstring of 'tab-line-tabs-function' (bug#47117)

(tab-line-tabs-function): Mention 'tab-line-tabs-buffer-groups'
in the docstring.
(tab-line-tabs-buffer-groups): Add docstring.

* lisp/tab-line.el: Add face for group-tab (bug#47118)

(tab-line-tab-face-functions): Add choice for 'tab-line-tab-face-group'.
(tab-line-tab-group): New face.
(tab-line-tabs-buffer-groups): Set alist key 'group-tab' for group tabs.
(tab-line-tab-face-group): New function to set face for group tabs.

* lisp/net/tramp-crypt.el (tramp-crypt-add-directory):

Don't autoload setting property `completion-predicate'.

Fix reference to 'diff-font-lock-syntax' in diff-mode documentation

* doc/emacs/files.texi (Diff Mode): Add the omitted name of the
variable.  (Bug#47129)

Fix buffer overflow in xbm_scan (bug#47094)

* src/image.c (xbm_scan): Ensure reading a string doesn't overflow the
buffer.

(cherry picked from commit ebc3b25409dd614c1814a0643960452683e37aa3)

Fix buffer overflow in xbm_scan (bug#47094)

* src/image.c (xbm_scan): Ensure reading a string doesn't overflow the
buffer.

Separate values 'override' and 'append' in 'outline-minor-mode-highlight'

* lisp/outline.el (outline-font-lock-keywords): Handle 'override' and 'append'
separately.
(outline-minor-mode-highlight): Separate values 'override' and 'append'.
(outline-minor-mode-highlight-buffer): Go to match-beginning
before checking '(point)'.

Add help-key-binding styling to wombat theme

* etc/themes/wombat-theme.el (help-key-binding): Add face
definition.

; Add comment for a recent change

* lisp/faces.el (help-key-binding): Comment on the reason for a
recent change.

Fix rare redisplay glitches when image has been removed from display

* src/dispnew.c (update_window): Make sure all glyph rows below
the last visible one are marked as invalid, even when the loop
which "updates the rest of the lines" didn't examine the last
visible row.  (Bug#47093)

Adjust colors of help-key-binding face for readability

* lisp/faces.el (help-key-binding): Adjust colors for improved
readability, and use a flat :box for highlighting (with negative
:line-width height to avoid any vertical resizing of the minibuffer).

This was discussed in:
https://lists.gnu.org/r/emacs-devel/2021-03/msg00535.html

Remove ;;;###tramp-autoload cookie from Tramp defcustoms (Bug#47063)

* lisp/net/tramp-crypt.el (tramp-crypt-enabled-p): New defun.
(tramp-crypt-add-directory, tramp-crypt-remove-directory):
Add property `completion-predicate'.

* lisp/net/tramp-sh.el (tramp-terminal-type, tramp-remote-path)
(tramp-remote-process-environment): Remove.  Move them to ...

* lisp/net/tramp.el: ... here.

Extend support for faces in Enriched mode

* lisp/textmodes/enriched.el (enriched-face-ans): Support faces
with bold and italic attributes.  (Bug#46507)

Fix typos and omissions for (elisp)Button Buffer Commands

* doc/lispref/display.texi (Button Buffer Commands): Minor
typo and omission fixes `backward-button' and
`forward-button'.  (Bug#47051)

Teach Rmail about NBSP in "Re:"

* lisp/mail/rmail.el (rmail-simplified-subject)
(rmail-reply-regexp): Allow NBSP in "RE:" prefixes.

* src/keyboard.c parse_solitary_modifier): Accept `click` modifier

Revert "* lisp/mouse.el: Fix mouse-1-clock-follows-mouse = double"

This reverts commit 02a5cfce471613f671722b35536d2a78f17b0429.
That commit breaks because of a missing patch to `parse_modifiers_uncached`
in `src/keyboard.c`.  IOW, too risky for `emacs-27`.

Don't merge to `master`.

Fix simple-tests--undo*

* test/lisp/simple-tests.el (simple-tests--undo-in-region,
simple-tests--undo-equiv-table): Re-enable in batch mode.
Enable 'transient-mark-mode' in temp buffer.

* lisp/filesets.el: Address byte-compiler warning

(filesets-run-cmd): Let-bind `filesets--files`.
(filesets-cmd-isearch-getargs): Use it.

* lisp/tooltip.el (tooltip): Restore group that was not "redundant".

Merge from origin/emacs-27

02a5cfce47 (origin/emacs-27) * lisp/mouse.el: Fix mouse-1-clock-follo...
c881e990e3 * lisp/emacs-lisp/gv.el (edebug-after): Don't run the gett...

; Merge from origin/emacs-27

The following commit was skipped:

9f09083bcd * doc/misc/tramp.texi (Remote shell setup): Fix reference....

Merge from origin/emacs-27

fc83f37951 Fix initialization of 'while-no-input-ignore-events'
8f603da44c Update documentation of reading passwords

; Merge from origin/emacs-27

The following commits were skipped:

ed2b23ecc1 Improve the 'dired-do-kill-lines' doc string
8c93becb35 (emacs-27) ; Auto-commit of loaddefs files.

Merge from origin/emacs-27

2c5f215419 Avoid crashes in Mew due to corrupted tool-bar label
7a23915618 * lisp/tooltip.el (tooltip): Doc fix for GTK.
c4bbe02cc4 * lisp/help.el (help-for-help-internal): Doc fix; use impe...

# Conflicts:
# lisp/help.el
# lisp/tooltip.el

Skip recent undo tests in batch mode for now

* test/lisp/simple-tests.el (simple-tests--undo-in-region):
Split into separate test.  Skip in batch mode for now.
(simple-tests--undo-equiv-table): Skip in batch mode for now.

* lisp/cedet/{*.el,ede/*.el}: Use lexical-binding

Remove a few redundant `:group` arguments as well.

* lisp/cedet/ede.el: Use lexical-binding.
Don't load `ede/files` at compile-time.
(ede-speedbar): Declare function.
(ede-load-project-file): Allow `rootreturn` to be a reference rather
than a symbol.
(ede-initialize-state-current-buffer): Pass `ROOT` as a reference
rather than a symbol to `ede-directory-get-open-project` and
`ede-load-project-file` so we don't need to make it dynamically scoped.
(ede-flush-deleted-projects): Avoid `add-to-list` on a local var.

* lisp/cedet/ede/files.el: Use lexical-binding.
(ede-directory-get-open-project): Allow `rootreturn` to be a reference
rather than a symbol.
(ede-project-root-directory): Remove unused var `root`.
(ede-expand-filename-impl): Remove unused vars `path` and `proj`.

* lisp/cedet/cedet-idutils.el: Use lexical-binding.
(cedet-idutils-search): Remove always-nil variable `scopeflags`.

* lisp/cedet/data-debug.el: Use lexical-binding.
(data-debug-insert-overlay-button, data-debug-insert-overlay-list-button)
(data-debug-insert-buffer-button, data-debug-insert-buffer-list-button)
(data-debug-insert-process-button): Remove always-nil variable `tip`.
(data-debug-insert-ring-button): Remove unused var `ringthing`.
(data-debug-insert-widget-properties): Remove unused var `type`.

* lisp/cedet/semantic.el: Use lexical-binding.
(semantic-mode): Strength-reduce `eval` to `symbol-value`.

* lisp/cedet/ede/custom.el: Use lexical-binding.
(ede-project-sort-targets): Remove unused vars `count`, `current`, and
`order`.

* lisp/cedet/ede/pconf.el: Use lexical-binding.
(ede-proj-configure-synchronize): Remove unused var `add-missing`.

* lisp/cedet/ede/pmake.el (ede-proj-makefile-garbage-patterns):
Simplify via η-reduction.
(ede-proj-makefile-dependencies): Use `seq-some` rather than `eval+or`.

* lisp/cedet/ede/proj-elisp.el: Use lexical-binding.
(project-compile-target): Remove unused var `elc`.
(ede-update-version-in-source): Remove unused var `match`.
(project-compile-target): Declare function `cedet-update-autoloads`
from file we don't have.

* lisp/cedet/cedet-cscope.el: Use lexical-binding.
* lisp/cedet/cedet-files.el: Use lexical-binding.
* lisp/cedet/cedet-global.el: Use lexical-binding.
* lisp/cedet/cedet.el: Use lexical-binding.
* lisp/cedet/ede/auto.el: Use lexical-binding.
* lisp/cedet/ede/autoconf-edit.el: Use lexical-binding.
* lisp/cedet/ede/config.el: Use lexical-binding.
* lisp/cedet/ede/cpp-root.el: Use lexical-binding.
* lisp/cedet/ede/detect.el: Use lexical-binding.
* lisp/cedet/ede/generic.el: Use lexical-binding.
* lisp/cedet/ede/linux.el: Use lexical-binding.
* lisp/cedet/ede/locate.el: Use lexical-binding.
* lisp/cedet/ede/makefile-edit.el: Use lexical-binding.
* lisp/cedet/ede/proj-info.el: Use lexical-binding.
* lisp/cedet/ede/proj-obj.el: Use lexical-binding.
* lisp/cedet/ede/proj-prog.el: Use lexical-binding.
* lisp/cedet/ede/proj-shared.el: Use lexical-binding.
* lisp/cedet/ede/proj.el: Use lexical-binding.
* lisp/cedet/ede/shell.el: Use lexical-binding.
* lisp/cedet/ede/simple.el: Use lexical-binding.
* lisp/cedet/ede/source.el: Use lexical-binding.
* lisp/cedet/ede/speedbar.el: Use lexical-binding.
* lisp/cedet/ede/util.el: Use lexical-binding.

Tramp sshfs fixes

* doc/misc/tramp.texi (FUSE setup): Fix typo.

* lisp/net/tramp-sshfs.el (tramp-sshfs-handle-set-file-modes):
Use `tramp-compat-set-file-modes'.

* test/lisp/net/tramp-tests.el
(tramp-test43-asynchronous-requests): Don't run for tramp-sshfs.

; Fix typos in doc strings

Document how to create a branch for Git/Mercurial

* doc/emacs/maintaining.texi (Creating Branches): Add instructions
for git/Mercurial.

* lisp/emacs-lisp/cconv.el (cconv--analyze-use): Simplify (doh!)

* lisp/emacs-lisp/cconv.el (cconv--analyze-use): Tune down the warning

Don't warn for always-nil bindings if the binding is made explicit.
Fixes bug#47080.

* lisp/emacs-lisp/syntax.el (syntax-propertize-rules): Use `macroexp-let2`

This also silences the recently introduced compilation warning.

Rename to image--transform-smoothing in image-mode.el

* lisp/image-mode.el (image--transform-smoothing): Rename from
image-transform-smoothing.
(image-transform-properties, image-transform-reset): Adjust usage.

Add a new `image-transform-smoothing' user option

* doc/lispref/display.texi (Image Descriptors): Document it.
* lisp/image.el (image-transform-smoothing): New user option.
(create-image): Use it.
(image--default-smoothing): New function.

Fix compilation warning in python-wy.el after lexical rewrite

* admin/grammars/python.wy: Require semantic/tag.

In end of data:
cedet/semantic/wisent/python-wy.el:862:1: Warning: the function
    `semantic-tag-name' might not be defined at runtime.