* Prevent stale eln loading checking file timestamp before load (bug#46617)

* src/lread.c (maybe_swap_for_eln): Add file timestamp check.
(openp): Update 'maybe_swap_for_eln' call sites.

Merge remote-tracking branch 'savannah/master' into native-comp

Adapt Tramp file notification support

* lisp/net/tramp-integration.el (tramp-use-ssh-controlmaster-options):
Declare it.

* lisp/net/tramp-sh.el (tramp-sh-handle-file-notify-add-watch):
Remove "gvfs-monitor-dir".
(tramp-sh-gvfs-monitor-dir-process-filter)
(tramp-get-remote-gvfs-monitor-dir): Remove.
(tramp-get-remote-gio-file-monitor): Support also cygwin, and
GFamDirectoryMonitor, GPollFileMonitor.

* doc/emacs/maintaining.texi (Managing Projects): Fixes and copyedits.

Fix typo

* lisp/progmodes/project.el (project-remove-known-project):
Fix typo (bug#47287).

Add command project-remove-known-project

* etc/NEWS: Mention the new command.

* lisp/progmodes/project.el (project--remove-from-project-list): Add
new argument, report-message, used to signal various messages when
removal has happened.

* lisp/progmodes/project.el (project-remove-known-project): New
command that removes the selected directory from the project-list-file.

* lisp/progmodes/project.el (project-current): Add the report message.

* doc/emacs/maintaining.text: Add information about the new command to
the manual.

* list/progmodes/idl*.el: Use lexical-binding

* lisp/progmodes/idlw-complete-structtag.el: Use lexical-binding.

* lisp/progmodes/idlw-help.el: Use lexical-binding.
Delete redundant `:group` arguments.
(idlwave-query-class, idlwave-force-class-query, idlw-help-name)
(idlw-help-kwd, idlw-help-link): Declare vars.
(idlwave-highlight-linked-completions): Remove unused var `class`.
(idlwave-help-find-in-doc-header): Remove unused var `header-re`.

* lisp/progmodes/idlw-shell.el (idlwave-shell-input-mode-magic):
Remove XEmacs-only code.
(idlwave-shell-filter, idlwave-shell-scan-for-state):
Use `functionp` since a function can also satisfy `listp`.
(idlwave-shell--mouse-examine): Rename from `idlwave-shell-mouse-examine`.
Make it a function, and simplify for Emacs≥22.  Simplify calling convention
since all callers always immediately `funcall`d the result.
Update all callers.
(idlwave-default-mouse-track-event-is-with-button): Use `always`.
(idlwave-shell-filter-bp): Simplify a tiny bit.

* lisp/progmodes/idlw-toolbar.el: Use lexical-binding.
(idlwave-toolbar-add, idlwave-toolbar-remove)
(idlwave-toolbar-add-everywhere, idlwave-toolbar-remove-everywhere)
(idlwave-toolbar-toggle): Remove XEmacs-only code.

* lisp/progmodes/idlwave.el: Use lexical-binding.
(idlwave--dlet): New macro.
(<toplevel>): Use it.
(idlwave-keyword-abbrev): Turn it into a function.
(idlwave-code-abbrev): Delete macro.
(idlwave-mode-abbrev-table): Use `:enable-function` instead.
(idlwave-with-special-syntax): Delete macro; use `with-syntax-table`
instead in all callers.
(idlwave-action-and-binding): Use `alist-get` and replace `(lambda...)
with a proper closure.  Change all callers to prefer passing a function
in the `cmd` argument.
(idlwave-fill-function): Delete constant var.
Replace its uses with its value (the symbol `auto-fill-function`).
(idlwave-mode): Set `normal-auto-fill-function` instead of the
cumbersome use of `idlwave-fill-function`.  Tighten a regexp.
Don't set `imenu-create-index-function` to the value it should already have.
(idlwave-auto-fill-mode): Make it an obsolete alias for `auto-fill-mode`.
(idlwave-modify-abbrev): Rename from `idlwave-check-abbrev`.
Don't check `idlwave-quoted` since `:enable-function` did it for us already.
(idlwave--command-function): Rename from `idlwave-command-hook`
and make it hold a function rather than an expression.
(idlwave-command-hook, idlwave-modify-abbrev): Adjust accordingly.
(idlwave-show-begin-check): Don't check `idlwave-quoted` since
`:enable-function` did it for us already.
(idlwave-do-action): Use `functionp` since a function can also satisfy `listp`
(idlwave-new-sintern-type): Make it a macro, so we don't need to
`declare-function` for the functions it defines.
(idlwave--class-selector, idlwave--type-selector)
(idlwave--method-selector, idlwave--super-classes): Rename those vars
by adding the `idlwave--` prefix.  Adjust all uses.
(idlwave-complete-functions): Rename from `idlwave-complete-special`.
(idlwave-call-special): Declare obsolete.  Change all callers to use
`run-hook-with-args-until-success` instead.
(idlwave-complete-filename): Use `dlet`.
(idlwave-rinfo-assq-any-class): Remove unused var `class`.
(idlwave-determine-class-functions): Rename from
`idlwave-determine-class-special`; fix docstring since the functions
are called with only one argument.
(idlwave--complete-after-success-function): Rename from
`idlwave-complete-after-success-form` and make it hold a function.
Adjust all users.
(idlwave--complete-after-success-force-function): Rename from
`idlwave-complete-after-success-form-force` and make it hold a function.
Adjust all users.
(idlwave-attach-classes): Remove always-t variable `do-dots`.
(idlwave-local-value): Use `local-variable-p` and `buffer-local-value`
to avoid `with-current-buffer`.
(idlwave-default-choose-completion): Comment out (unused and calls
a function that doesn't exist).
(idlwave-shell-filter-sysvars): Remove unused vars `type`, `name`, and `class`
(idlwave-fix-module-if-obj_new): Remove unused var `name`.
(idlwave-fix-keywords): Bind `idlwave--super-classes` via `let` than
via the function's argument.
(idlwave-twin-class, idlwave-twin-name): Move before first use.
(idlwave-study-twins): Remove stealth/redundant `type` variable.
(idlwave-routine-entry-compare-twins): Remove unused var `type`.
(idlwave-path-alist-add-flag): Avoid `add-to-list` on a local var.
(idlwave-list-abbrevs): Simplify a tiny bit.

* lisp/tab-bar.el (tab-bar-tab-post-change-group-functions): New hook.

(tab-bar-change-tab-group): Run it.
(tab-bar-move-tab-to-group): New command for new hook.

Improve failure reporting in test/lisp/electric-tests.el

In particular, on a failure, output the test's doc string to
electric-tests.log, along with all the other failure information.
Fixes bug #47320.

* electric-tests.el (electric-pair-test-for) New parameter doc-string.  On a
test failure, output the doc-string parameter with message.
(electric-pair-define-test-form): Set the new variable doc-string to the
generated doc string, and pass this as argument to both ert-deftest and
electric-pair-test-for.

* lisp/auth-source-pass.el (auth-source): Silence spurious warning

Fix previous format-prompt change: The default can be a symbol

* lisp/minibuffer.el (format-prompt): The default can also be a
symbol.

perl-mode: Fix regexps for fontification

* test/lisp/progmodes/cperl-mode-tests.el
(cperl-test-fontify-declarations): New test to ensure consistency
between perl-mode.el and cperl-mode.el (bug#47345).
* lisp/progmodes/perl-mode.el (perl-font-lock-keywords-1): pick
correct capture groups for "use Pack::Age;"
Fontify all components of "Pack::Age", not just "Pack"
(perl-font-lock-keywords-2): Use keyword-face for declarators

Improve two native compiler related docstrings.

* lisp/emacs-lisp/comp.el (comp-eln-load-path-eff): Improve docstring.
* src/comp.c (comp-eln-load-path): Likewise.

Revert "Remove font-lock toggle from font-lock-update"

This reverts commit 23995414fec483287e7fb9c9a279483319f9fc54.

The subject is under discussion.

Remove font-lock toggle from font-lock-update

* lisp/font-lock.el (font-lock-update): Remove call to
font-lock-unfontify-region and font-lock-mode toggle with ARG; this
did not perform what original author intended

* src/lread.c (maybe_swap_for_eln): Fix eln filename (bug#bug#47337).

xref.el: Keep Emacs 26 compatibility

* lisp/progmodes/xref.el (xref--read-identifier)
(xref-find-definitions, xref-find-definitions-other-window)
(xref-find-definitions-other-frame, xref-find-references):
Undo the latest change for Emacs 26 compatibility (bug#47286).

Add optional FORMAT argument to 'emacs-init-time'

* lisp/time.el (emacs-init-time): Add optional FORMAT argument
(bug#47306).

Replace "(default %s)" with 'format-prompt'

* lisp/cmuscheme.el (scheme-load-file, scheme-compile-file):
* lisp/comint.el (comint-get-source):
* lisp/emulation/viper-cmd.el (viper-quote-region, viper-kill-buffer)
(viper-query-replace, viper-read-string-with-history):
* lisp/eshell/esh-mode.el (eshell-find-tag):
* lisp/gnus/gnus-sum.el (gnus-articles-to-read)
(gnus-summary-search-article-forward)
(gnus-summary-search-article-backward):
* lisp/international/mule-cmds.el (set-input-method, toggle-input-method)
(describe-input-method, set-language-environment)
(describe-language-environment):
* lisp/mh-e/mh-gnus.el (mh-mml-minibuffer-read-disposition):
* lisp/mh-e/mh-letter.el (mh-insert-letter):
* lisp/mh-e/mh-mime.el (mh-display-with-external-viewer)
(mh-mime-save-parts, mh-mh-forward-message)
(mh-mml-query-cryptographic-method, mh-minibuffer-read-type):
* lisp/mh-e/mh-seq.el (mh-read-seq, mh-read-range):
* lisp/mh-e/mh-utils.el (mh-prompt-for-folder):
* lisp/progmodes/etags.el (find-tag-tag):
(find-tag-noselect, find-tag, find-tag-other-window)
(find-tag-other-frame, find-tag-regexp):
* lisp/progmodes/idlwave.el (idlwave-find-module):
* lisp/progmodes/inf-lisp.el (lisp-load-file, lisp-compile-file):
* lisp/progmodes/tcl.el (tcl-load-file, tcl-restart-with-file):
* lisp/progmodes/xref.el (xref--read-identifier):
(xref-find-definitions, xref-find-definitions-other-window)
(xref-find-definitions-other-frame, xref-find-references):
* lisp/ses.el (ses-read-printer):
(ses-read-cell-printer, ses-read-column-printer)
(ses-read-default-printer, ses-define-local-printer):
* lisp/subr.el (read-number):
* lisp/term.el (term-get-source):
* src/minibuf.c (read-buffer): Remove prompt suffix and
use 'format-prompt'.
* lisp/minibuffer.el (format-prompt): Ignore DEFAULT empty strings
(bug#47286).

Fix problem with filling with a computed fill prefix

* lisp/textmodes/fill.el (fill-region-as-paragraph): Fix problem
when filling text with a computed fill prefix (bug#47338).

Convert many more links to use HTTPS

Move string-trim functions to subr.el

* doc/lispref/strings.texi (Creating Strings): Document them.

* lisp/faces.el: Don't require subr-x, because that leads to build
errors.

* lisp/subr.el (string-trim, string-trim-right)
(string-trim-left): Move here from subr-x.el.

* lisp/emacs-lisp/shortdoc.el (string): Adjust.

Use lexical-binding in iimage.el

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

* lisp/talk.el: Use lexical-binding.

Use lexical-binding in two trivial org-mode files

This change has already been made on org-mode's master branch.

* lisp/org/org-install.el:
* lisp/org/org-version.el: Use lexical-binding.

* lisp/help-at-pt.el: Use lexical-binding.

* lisp/progmodes/simula.el (hilit-set-mode-patterns): Use regexp-opt.

* lisp/progmodes/modula2.el: Use lexical-binding.

Use lexical-binding in view.el

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

Delete some commented out defgroups

* lisp/eshell/esh-opt.el:
* lisp/international/ccl.el:
* lisp/pcmpl-linux.el:
* lisp/shell.el:
* lisp/url/url-news.el: Delete some commented out defgroups.

Doc fixes in view.el

* lisp/view.el:
(view-try-extend-at-buffer-end, kill-buffer-if-not-modified)
(view-buffer, view-buffer-other-window, view-buffer-other-frame)
(view-page-size-default, view-set-half-page-size-default)
(view-really-at-end, view-end-message)
(view-search-no-match-lines): Doc fixes.

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

Use lexical-binding in ruler-mode.el

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

* lisp/progmodes/ebnf-*.el: Use lexical-binding

* lisp/progmodes/ebnf-abn.el:
* lisp/progmodes/ebnf-bnf.el:
* lisp/progmodes/ebnf-dtd.el:
* lisp/progmodes/ebnf-ebx.el:
* lisp/progmodes/ebnf-iso.el:
* lisp/progmodes/ebnf-otz.el:
* lisp/progmodes/ebnf-yac.el: Enable lexical-binding.
* lisp/progmodes/ebnf2ps.el (ebnf-apply-style1)
(ebnf-insert-ebnf-prologue): Use lexical-binding.

* lisp/mh-e: Enable lexical-binding in all the files

* lisp/mh-e/mh-alias.el: Use lexical-binding.
(mh-alias-insert-file): Completion tables can be mere lists of strings.

* lisp/mh-e/mh-mime.el: Use lexical-binding.
(mh-mm-inline-message): Remove always-nil var `visible-headers`.

* lisp/mh-e/mh-search.el: Use lexical-binding.
(mh-search-folder): Remove unused var `pick-folder`.

* lisp/mh-e/mh-show.el: Use lexical-binding.
(mh-display-msg): Remove always-nil var `visible-headers`.

* lisp/mh-e/mh-utils.el: Use lexical-binding.
(completion-root-regexp): Always declare var.

* lisp/mh-e/mh-buffers.el: Use lexical-binding.
* lisp/mh-e/mh-comp.el: Use lexical-binding.
* lisp/mh-e/mh-folder.el: Use lexical-binding.
* lisp/mh-e/mh-funcs.el: Use lexical-binding.
* lisp/mh-e/mh-gnus.el: Use lexical-binding.
* lisp/mh-e/mh-identity.el: Use lexical-binding.
* lisp/mh-e/mh-inc.el: Use lexical-binding.
* lisp/mh-e/mh-junk.el: Use lexical-binding.
* lisp/mh-e/mh-letter.el: Use lexical-binding.
* lisp/mh-e/mh-limit.el: Use lexical-binding.
* lisp/mh-e/mh-print.el: Use lexical-binding.
* lisp/mh-e/mh-scan.el: Use lexical-binding.
* lisp/mh-e/mh-seq.el: Use lexical-binding.
* lisp/mh-e/mh-speed.el: Use lexical-binding.
* lisp/mh-e/mh-thread.el: Use lexical-binding.
* lisp/mh-e/mh-tool-bar.el: Use lexical-binding.
* lisp/mh-e/mh-xface.el: Use lexical-binding.

* lisp/wdired.el: Fix typo in last change.

Reported by Michael Heerdegen <michael_heerdegen@web.de>.

(wdired-change-to-wdired-mode, wdired-change-to-dired-mode):
The `(local FOO)` form takes an expression, so the var needs to be quoted.

Mention `C-o' in the `RET' doc string

* lisp/simple.el (newline-and-indent): Mention `C-o' in the doc
string.

Fix previous face.el change

* lisp/faces.el (require): Fix compilation warning from previous
face.el change.

* lisp/tab-bar.el (tab-bar-new-tab-group): Set default to t.

(tab-bar-tabs, tab-bar-select-tab, tab-bar-new-tab-to):
Use tab-bar--current-tab-make instead of tab-bar--current-tab.
(tab-bar--tab): Add arg 'frame' to tab-bar--current-tab-find.
(tab-bar--current-tab, tab-bar--current-tab-make): Move most of body
from the former to the latter, thus reverting tab-bar--current-tab
to its previous behavior.
https://lists.gnu.org/archive/html/emacs-devel/2021-03/msg00959.html

Use read-color in read-face-attribute for color attributes

* lisp/faces.el (read-face-attribute): Use read-color when
prompting for a color (bug#47316).

* lisp/files-x.el (connection-local-criteria-for-default-directory):

Add optional argument APPLICATION.

Remove unnecessary requires of rx

* lisp/cedet/semantic/wisent/python.el (rx):
* test/src/process-tests.el (rx): Remove unnecessary requires.

Use lexical-binding in notifications.el

* lisp/notifications.el: Use lexical-binding.
(notifications-notify): Prefer 'push' to 'add-to-list'.

* lisp/emacs-lisp/comp.el (comp-lookup-eln): Add autoload cookie.

; * src/comp.c (Fcomp_el_to_eln_filename): Improve docstring.

* lisp/emacs-lisp/comp.el (comp-lookup-eln): Add new function.

Prevent unnecessary multiple .el hashing in 'maybe_swap_for_eln'

* src/comp.c (Fcomp_el_to_eln_rel_filename): New function.
(Fcomp_el_to_eln_filename): Make use of.
(syms_of_comp): Register 'Scomp_el_to_eln_rel_filename'.
* src/lread.c (maybe_swap_for_eln): Make use of
'Fcomp_el_to_eln_rel_filename' to hash prevent unnecessary
multiple hashing.

; * test/Makefile.in (TEST_HOME): Add a note.

Prevent open minibuffers getting lost when their frame gets deleted

This happened with minibuffer-follows-selected-frame set to t.

* doc/emacs/mini.texi (Basic Minibuffer): State where a command's action takes
place when a minibuffer's frame has been deleted.

* lisp/window.el (window--before-delete-windows, record-window-buffer): Take
into account that minibuffers are now recorded on w->prev_buffers field.

* src/fns.c (merge_c): New version of `merge' taking a C function, rather than
a Lisp function as the comparison function.

* src/frame.c (do_switch_frame): Pass arguments sf and for_deletion to
move_minibuffers_onnto_frame.

* src/lisp.h (top level): Declare merge_c and
move_minibuffers_onto_selected_frame.

* src/minibuf.c (MB_frame): New Lisp_Object recording the minibuffer's frame.
(choose_minibuf_frame): Remove all code except that which sets minibuf_window
to the current frame's minibuffer.
(minibuffer_ent_greater): New comparison function, passed to merge_c.
(zip_minibuffer_stacks): New function.
(move_minibuffers_onto_frame): Renamed from `move_minibuffer_onto_frame' given
two arguments, the old frame and for_deletion, and simplified.  Minibuffers
are now stacked in the mini-window's ->prev_buffers field.
(read_minibuf): Several detailed amendments.
(exp_MB_frame): New Lisp_Object, the expired minibuffer's frame.
(read_minibuf_unwind): Search for the expired minibuffer's frame, rather than
taking it from (unreliable) variables.  Switch temporarily to this frame for
tidying up operations.
(minibuffer_unwind): New function which pops a stacked minibuffer.
(syms_of_minibuf): Call staticpro for the two new Lisp variables.

* src/window.c (Fset_window_configuration): Don't record minibuffers with
record-window-buffer.

* src/xdisp.c (gui_consider_frame_title): Remove redundant Fselect_window,
which caused an unwanted frame switch.  Amend the arguments to
format_mode_line_unwind_data to match.

Add a tmp dir to `comp-eln-load-path' when running the testsuite.

* lisp/startup.el (normal-top-level): Tweak `comp-eln-load-path'
adding a temp directory when running the testsuite.

* lisp/thumbs.el (thumbs-conversion-program): Simplify.

/usr/bin is (normally) always in PATH, and this need not be absolute,
so the executable-find is unnecesary.

Actually use lexical-binding in wid-browse.el

* lisp/wid-browse.el: Use lexical-binding.  I apparently forgot to
commit the lexical-binding cookie in my previous attempt.

Revert "* lisp/emacs-lisp/comp.el (comp-clean-up-stale-eln): Clean-up all..."

This reverts commit be22cda7be9e77e67f224f6f07cca9dd44aaa078.

Older binaries might still need those .eln if they where preloaded.

Use pop-to-buffer-same-window for shell

* lisp/progmodes/project.el (project-shell): Behave the same way as
'M-x project-eshell'.
* lisp/shell.el (shell): Behave the same way as 'M-x eshell'.
* etc/NEWS: Add news entry describing the change.
* lisp/tutorial.el: Use lexical-binding.

; Remove two unnecessary quotes

* lisp/emacs-lisp/comp-cstr.el (comp-cstr-=): Remove unnecessary
quote.
* lisp/emacs-lisp/comp.el (comp-compile-ctxt-to-file): Likewise.

* lisp/emacs-lisp/comp.el (comp-clean-up-stale-eln): Clean-up all .eln dirs.

Allow hide-ifdef-guts to work in buffers not visiting files

* lisp/progmodes/hideif.el (hide-ifdef-guts): Allow working in
buffers not visiting files (bug#47279).

Copyright-paperwork-exempt: yes

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

* lisp/cedet/semantic/ia.el (semantic-ia-complete-symbol): Simplify

Cut the `semantic-ia-get-completions-deprecated` middle man.

Remove support for Syndic8.com, defunct since 2013

* lisp/gnus/nnrss.el (nnrss-discover-feed)
(nnrss-find-rss-via-syndic8): Remove support for Syndic8.com, as
the site was shut down in 2013.

; * etc/NEWS: Minor improvement to the last change.

; Improve a recent change in NEWS

* etc/NEWS: Enhance the description of how to get the old bindings
removed with the 'M-o' keymap.

Fix cl-progv binding order

* lisp/emacs-lisp/cl-macs.el (cl-progv): Bind variables in the
correct order (bug#47272).

* etc/NEWS: Small corrections for the new command 'font-lock-update'

Remove Gnus specific .dir-locals.el

* lisp/gnus/.dir-locals.el: Delete file.  The only variable it set was
'show-trailing-whitespace', but this should be up to the individual
developer.  (Bug#47278)

Prefer https and fix broken links in ERC

* lisp/erc/erc-button.el (erc-button-rfc-url)
(erc-button-search-url): Prefer https.
* lisp/erc/erc-capab.el:
* lisp/erc/erc.el (erc-cmd-MODE): Fix broken links.

* lisp/thumbs.el (thumbs-show-from-dir): Improve prompt.

Fix args-out-of-range error in format.el

* lisp/format.el (format-deannotate-region): Ignore todo items
with FROM > TO.  (Bug#47277)

Don’t convert pointer to bool

Without this patch, Oracle Studio 12.6 complains about converting
pointer to bool.
* src/editfns.c (styled_format): Use !!.

Assume something more recent than X11R6

* lisp/bindings.el:
* lisp/menu-bar.el:
* lisp/printing.el:
* lisp/thumbs.el (thumbs-conversion-program): Assume we have something
more recent than X11R6.

Use lexical-binding in thumbs.el

* lisp/thumbs.el: Use lexical-binding.  Remove redundant :group args.
* test/lisp/thumbs-tests.el: New file.

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

* lisp/wdired.el: Use lexical-binding

Remove redundant `:group` args.

(wdired-change-to-wdired-mode): Use `add-function` to modify
`revert-buffer-function`.
(wdired-change-to-dired-mode): Adjust accordingly.
(wdired-do-renames): Make sure to bind `dired-backup-overwrite` dynamically.

Don't tag mouse command as mode exclusive

* lisp/finder.el (finder-mouse-select): Don't tag for finder-mode.

* lisp/emacs-lisp/bytecomp.el: Remember location of unresolved calls

I've gotten tired of seeing the "function foo not known to be defined"
warning without any line number information.  So this patch adds as
line number the position of the first use of that function in the file
(well, approximately, as usual).

(byte-compile-unresolved-functions): Add POSITIONs in the alist.
(byte-compile-function-warn): Store the current position in
`byte-compile-unresolved-functions`.
(byte-compile-arglist-warn): Adjust accordingly.
(byte-compile-print-syms): Delete unused function.
(byte-compile-warn-about-unresolved-functions): Use the stored position
to give more precise warnings.

* lisp/emacs-lisp/pcase.el (pcase-compile-patterns): New function (bug#47261)

Extracted from `pcase--expand`.
(pcase--expand): Use it.

Merge remote-tracking branch 'savannah/master' into native-comp

Improve the docs of a recent change in mb-depth.el

* lisp/mb-depth.el (minibuffer-depth-indicator-function): Improve
the wording of the doc string and of the label used for the
default value.  (Bug#47252)

Do not load native code when `load' is explicitly called on a .elc file

* src/lread.c (Fload): Do not load native code when `load' is
explicitly called on a .elc file.
(Flocate_file_internal): Update 'openp' call sites.
(maybe_swap_for_eln): Add new 'no_native' parameter.
(openp): Likewise + update 'maybe_swap_for_eln' and 'openp' call
sites.
* src/lisp.h: Update 'openp' signature.
* src/w32proc.c (sys_spawnve): Update 'openp' call sites.
* src/w32.c (check_windows_init_file): Likewise.
* src/sound.c (Fplay_sound_internal): Likewise.
* src/process.c (Fmake_process): Likewise.
* src/image.c (image_create_bitmap_from_file)
(image_find_image_fd): Likewise.
* src/emacs.c (set_invocation_vars): Likewise.
* src/charset.c (load_charset_map_from_file): Likewise.
* src/callproc.c (call_process): Likewise.

Fix :type of recently introduced defcustom

* lisp/mb-depth.el (minibuffer-depth-indicator-function): The option
can be nil, so add nil as a choice.  (Bug#47252)

Make minibuffer-depth-indicator-function a defcustom

* lisp/mb-depth.el (minibuffer-depth-indicator-function): Make
into a user option (bug#47252).

Warn the user if we can't find pkg-config

* configure.ac (WITH_IFAVAILABLE): Warn the user if we can't find
a usable pkg-config (bug#47159).

Add a note to NEWS as to how to restore the facemenu

Fix copyright lines mistakenly treated as outline headers

* lisp/emacs-lisp/generator.el:
* test/lisp/cedet/semantic-utest.el:
* test/lisp/cedet/semantic/format-tests.el:
* test/lisp/cedet/semantic/fw-tests.el:
* test/lisp/cedet/semantic/bovine/gcc-tests.el:
* test/lisp/cedet/semantic/format-resources/test-fmt.el:
* test/manual/cedet/semantic-tests.el:
* lisp/obsolete/inversion.el: Use only 2 semi-colons before "Copyright".

lisp/erc: Use lexical-binding

Also remove various redundant `:group` arguments.

* lisp/erc/erc-backend.el (define-erc-response-handler): Move `declare`
after the docstring.

* lisp/erc/erc-capab.el: Use lexical-binding.
(erc-capab-identify-activate): Simplify with `member`.

* lisp/erc/erc-dcc.el (erc-dcc): Move before erc-dcc-mode definition,
which refers to it.
(erc-dcc-chat-accept): Remove unused vars `nick` and `buffer`.

* lisp/erc/erc-imenu.el: Use lexical-binding.
(erc-create-imenu-index): Remove unused var `prev-pos`.

* lisp/erc/erc-match.el: Use lexical-binding.
(erc-match-message): Remove unused var `old-pt`.
(erc-match-message): Strength-reduce `eval` to `symbol-value`.

* lisp/erc/erc-page.el: Use lexical-binding.
(erc-page): Move Custom group before `erg-page-mode` which refers to it.

* lisp/erc/erc-replace.el: Use lexical-binding.
(erc-replace-insert): Use `functionp`.

* lisp/erc/erc-status-sidebar.el: Use lexical-binding.
(erc-status-sidebar-open): Remove unused var `sidebar-window`.

* lisp/erc/erc.el: Fix header to use the customary 3 semi-colons.
(erc-fill-column): Declare variable.

* lisp/erc/erc-autoaway.el: Use lexical-binding.
* lisp/erc/erc-ezbounce.el: Use lexical-binding.
* lisp/erc/erc-fill.el: Use lexical-binding.
* lisp/erc/erc-goodies.el: Use lexical-binding.
* lisp/erc/erc-ibuffer.el: Use lexical-binding.
* lisp/erc/erc-identd.el: Use lexical-binding.
* lisp/erc/erc-join.el: Use lexical-binding.
* lisp/erc/erc-lang.el: Use lexical-binding.
* lisp/erc/erc-log.el: Use lexical-binding.
* lisp/erc/erc-menu.el: Use lexical-binding.
* lisp/erc/erc-netsplit.el: Use lexical-binding.
* lisp/erc/erc-networks.el: Use lexical-binding.
* lisp/erc/erc-pcomplete.el: Use lexical-binding.
* lisp/erc/erc-ring.el: Use lexical-binding.
* lisp/erc/erc-speedbar.el: Use lexical-binding.
* lisp/erc/erc-spelling.el: Use lexical-binding.
* lisp/erc/erc-truncate.el: Use lexical-binding.
* lisp/erc/erc-xdcc.el: Use lexical-binding.

Do interactive mode tagging for finder.el

Use lexical-binding in finder.el

* lisp/finder.el: Use lexical-binding.
(finder-mode-map, finder-compile-keywords): Remove unused lexical
variables.

Fix a warning due to not preloading facemenu.el

* test/src/undo-tests.el (facemenu): Require.

* lisp/faces.el (help-key-binding): Tweak background.

* lisp/emacs-lisp/cl-macs.el (cl--self-tco): Optimize the "return nil" case

* test/lisp/progmodes/cperl-mode-tests.el: Silence warnings

(cperl-test-bug-47112): Actually obey the major-mode for the test.

* 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