* lisp/net/tramp.el (tramp-handle-shell-command): Set `default-directory'.

* lisp/net/tramp-adb.el (tramp-adb-handle-make-process):
* lisp/net/tramp-cache.el (top):
* lisp/net/tramp-sh.el (tramp-sh-handle-make-process):
Use `insert-file-contents-literally'.

* lisp/net/tramp.el (tramp-parse-file):
Use `insert-file-contents-literally'.
(tramp-handle-shell-command): Reorganize error-buffer handling.
(tramp-handle-start-file-process): Use `consp' instead of `listp'.

* test/lisp/net/tramp-tests.el (tramp-test31-interrupt-process):
Bind `delete-exited-processes'.
(tramp--test-async-shell-command): Bind `delete-exited-processes'.
Add additional `accept-process-output'.  Move cleanup of output
buffer ...
(tramp-test32-shell-command): ... here.  Test error buffer also
for `async-shell-command'.

bug#38927

* src/mini-gmp.c, src/mini-gmp.h: Copy from GMP 6.2.0.
This incorporates:
2019-12-05 remove some sizeof(mp_limb_t)
2019-12-04 (mpn_invert_3by2): Remove special code for limb sizes
2019-12-04 (mpn_invert_3by2): Limit size of an intermediate
2019-11-20 (mpn_invert_3by2): Use xor instead of negation
2019-11-19 (mpn_invert_3by2): Move an assert earlier
2019-11-19 (mpn_invert_3by2): Add a new shortcut
2019-11-17 Prepend "unsigned" to MINI_GMP_LIMB_TYPE
2019-11-17 Enable testing with different limb sizes (types)
2019-11-20 Use already defined constants
2019-11-09 Avoid undefined behaviour with small limb sizes

* src/emacs.c (main): Call ns_init_locale before using the
environment variable that ns_init_locale sets up (Bug#39248).

* test/lisp/bookmark-tests.el (cl-lib): Require.
(bookmark-test-bmenu-toggle-filenames)
(bookmark-test-bmenu-toggle-filenames/show)
(bookmark-test-bmenu-show-filenames)
(bookmark-test-bmenu-hide-filenames)
(bookmark-test-bmenu-bookmark, bookmark-test-bmenu-mark)
(bookmark-test-bmenu-any-marks, bookmark-test-bmenu-unmark)
(bookmark-test-bmenu-delete, bookmark-test-bmenu-locate): New
tests.

(bookmark-test-bmenu-edit-annotation/show-annotation): Rename from
'bookmark-bmenu-edit-annotation/show-annotation'.
(bookmark-test-bmenu-send-edited-annotation): Rename from
'bookmark-bmenu-send-edited-annotation'.
(bookmark-test-bmenu-send-edited-annotation/restore-focus): Rename
from 'bookmark-bmenu-send-edited-annotation/restore-focus'.

* lisp/net/tramp.el (tramp-completion-file-name-handler):
Fix thinko.  (Bug#39279)

* nt/epaths.nt (PATH_EMACS_SOURCE): Add definition.

Without this change, on typical GNU/Linux distributions
like Debian, the first button of ‘C-h f car RET’ does not work
because the source code for ‘car’ is not installed (Bug#37527).
Fix this by installing the (compressed) C source code alongside
the (compressed) Lisp source code that is already installed.
This adds about 3 MB (about 2%) to the size of the installed files
on my platform.
* Makefile.in (emacs_srcdir): New macro.
(epaths-force): Substitute PATH_EMACS_SOURCE.
(install-c-src): New rule, that installs a copy of the C source
code if emacs_srcdir says to.
(install-arch-indep): Depend on it.
* configure.ac (emacs_srcdir): New var.
Add support for --disable-install-srcdir.
* lisp/emacs-lisp/find-func.el (find-function-C-source-directory):
Look in emacs-source-directory first.
(find-function-C-source): Also look for gzipped source files.
* lisp/startup.el (normal-top-level):
Also recode emacs-source-directory.
* src/epaths.in (PATH_EMACS_SOURCE): New macro.
* src/lread.c: Include dosname.h, for IS_ABSOLUTE_FILE_NAME.
(syms_of_lread): New var emacs-source-directory.

See discussion at
https://lists.gnu.org/archive/html/emacs-devel/2020-01/msg00749.html .

* lisp/obsolete/iswitchb.el (iswitchb-summaries-to-end):
* test/src/regex-emacs-tests.el (regex-tests-BOOST-frob-escapes):
* test/lisp/help-fns-tests.el (help-fns-test-lisp-macro)
(help-fns-test-lisp-defun, help-fns-test-lisp-defsubst)
(help-fns-test-alias-to-defun, help-fns-test-bug23887):
Double backslashes for desired effect.
* lisp/org/ol.el (org-link-escape):
* lisp/net/nsm.el (nsm-protocol-check--rsa-kx)
(nsm-protocol-check--anon-kx, nsm-protocol-check--sha1-sig):
* lisp/obsolete/old-whitespace.el (whitespace-buffer):
* lisp/obsolete/rcompile.el (remote-compile-run-before):
* lisp/obsolete/vi.el (vi-end-of-blank-delimited-word):
* lisp/obsolete/vip.el (vip-current-major-mode)
(vip-paren-match, vip-switch-to-buffer)
(vip-switch-to-buffer-other-window, vip-kill-buffer)
(vip-get-ex-token, ex-edit):
* lisp/org/org-element.el (org-element--cache-sync-requests):
* lisp/org/org.el (org-sparse-tree):
* lisp/textmodes/reftex.el (reftex-report-bug):
* test/lisp/ibuffer-tests.el (ibuffer-save-filters):
* test/lisp/international/ucs-normalize-tests.el
(ucs-normalize-tests--insert-failing-lines):
* test/lisp/simple-tests.el (undo-test-kill-c-a-then-undo):
* test/lisp/textmodes/conf-mode-tests.el (conf-test-toml-mode):
* test/src/regex-emacs-tests.el (regex-tests-compare):
Remove redundant backslashes.

The convention in a decoded time’s dst flag is that t means DST,
nil means standard time, and -1 means unknown.  This differs from
the convention for other components of a decoded time, where nil
means unknown.  Fix some places where iso8601-parse mistakenly
treated nil as meaning that the dst flag was unknown.
* doc/lispref/os.texi (Time Parsing):
Adjust to match parse-time-string’s doc string.
* lisp/calendar/iso8601.el (iso8601-parse):
Set dst flag to nil if a numeric time zone or "Z" is given.
(iso8601--decoded-time): Default dst flag to -1 if no dst
flag or zone is given.
* lisp/calendar/time-date.el (decoded-time-set-defaults):
When we don’t have a time zone, set the dst flag consistently
with DEFAULT-ZONE.
* test/lisp/calendar/iso8601-tests.el (test-iso8601-date-years)
(test-iso8601-date-dates, test-iso8601-date-obsolete)
(test-iso8601-date-weeks, test-iso8601-date-ordinals)
(test-iso8601-time, test-iso8601-combined)
(test-iso8601-duration, test-iso8601-intervals)
(standard-test-dates, standard-test-time-of-day-local-time)
(standard-test-time-of-day-fractions)
(nonstandard-test-time-of-day-decimals)
(standard-test-time-of-day-beginning-of-day)
(standard-test-date-and-time-of-day, standard-test-interval):
Adjust tests to match fixed behavior.

* lisp/calendar/parse-time.el (parse-time-string):
Do not use decoded-time-set-defaults; just let iso8601-parse
do its thing.

* test/lisp/subr-tests.el (subr-test-version-list-<)
(subr-test-version-list-=, subr-test-version-list-<=): New tests.

0bed550e (origin/emacs-27) Remove EmacsOpenPanel and EmacsSavePanel...
a0336029 * doc/emacs/files.texi (Auto Save Files): Improve indexing...
57fb8b10 Fix inaccurate wording in the Emacs manual
1c487747 Update ERC module URLs
7d1e9c94 Minor doc string clarification in use-hard-newlines

The following commits were skipped:

e1deafd3 Backport: Fix bug 39218
d15f2d4c Prefer saying "Info manual" to "info page" in docs

92f080dd Tab-bar related finishing touches.
224e8d14 Make call_process call signal_after_change.  This fixes bu...
d02f2a79 * lisp/simple.el: Minor fixes to commentary.
196c42b8 Fix a few typos
4f2b9677 Fix doc strings for image-dired rotation commands

# Conflicts:
#	etc/NEWS

* lisp/net/shr.el (shr-urlify): Make adjacent links have separate
mouse hightlights (bug#39115).

* test/lisp/net/tramp-tests.el (tramp-test32-shell-command):
Test error buffer for synchronous `shell-command' only.

* lisp/net/tramp-gvfs.el (tramp-gvfs-gio-mapping): Add "gvfs-rename".
(tramp-gvfs-do-copy-or-rename-file): Use it.
(tramp-gvfs-activation-uri): Handle "media" method.
(tramp-gvfs-url-host): New defun.
(tramp-gvfs-handler-mounted-unmounted)
(tramp-gvfs-connection-mounted-p)
(tramp-gvfs-handler-volumeadded-volumeremoved)
(tramp-get-media-devices): Use it.

* etc/NEWS:
* configure.ac: Expand description of Cairo and Harfbuzz

* configure.ac: Warn about libXFT usage.  Warn about using Cairo
without HarfBuzz.

* etc/NEWS: Announce XFT and HarfBuzz warnings.

* doc/emacs/custom.texi (Modifier Keys):
* doc/emacs/basic.texi (Inserting Text): Fix minor inaccuracies in
describing the 'Alt' modifier.  (Bug#39254)

Stop exporting Vprevious_system_time_locale and
Vprevious_system_messages_locale to Elisp.  I did that export by
mistake in 1999, and the Elisp variables have never been used.
Simplifying this cruft should make it easier to fix Bug#39248.
* etc/NEWS: Mention this.
* src/emacs.c (main): Simplify locale initialization.
(synchronize_locale): Simplify.
(Vprevious_system_time_locale, Vprevious_system_messages_locale):
Now static variables not visible to Lisp, and defined only if
HAVE_SETLOCALE.
(Vprevious_system_messages_locale): Define only if LC_MESSAGES.

* lisp/erc/erc-autoaway.el, lisp/erc/erc-button.el,
lisp/erc/erc-compat.el, lisp/erc/erc-fill.el, lisp/erc/erc-imenu.el,
lisp/erc/erc-join.el, lisp/erc/erc-lang.el, lisp/erc/erc-match.el,
lisp/erc/erc-pcomplete.el, lisp/erc/erc-ring.el,
lisp/erc/erc-spelling.el, lisp/erc/erc-stamp.el,
lisp/erc/erc-track.el: Update URL to friendlier form, over https.
* lisp/erc/erc-ibuffer.el: Remove URL to nonexistent page.
* lisp/erc/erc-list.el, lisp/erc/erc-log.el, lisp/erc/erc-notify.el,
lisp/erc/erc-replace.el, lisp/erc/erc-services.el,
lisp/erc/erc-sound.el, lisp/erc/erc-speedbar.el,
lisp/erc/erc-truncate.el: Add URL to corresponding EmacsWiki page.

* lisp/so-long.el (so-long-commentary): Update for lisp-mnt change.

Consistent with multi-file package descriptions which don’t have
commentary sections nor double semicolon prefixes.
* lisp/emacs-lisp/lisp-mnt.el (lm-commentary): Remove commentary
header, double semicolon prefixes of each line, trailing new-lines and
trailing white-space from commentary.
* lisp/emacs-lisp/package.el (package--get-description)
(describe-package-1):
* lisp/finder.el (finder-commentary):
* lisp/info.el (Info-finder-find-node): Remove ad-hoc sanitation.

* lisp/emacs-lisp/bytecomp.el (byte-compile-fix-header):
Update for recent header changes.
(byte-compile-insert-header): Add more padding.

* lisp/emacs-lisp/bytecomp.el (byte-compile-insert-header): Don't
insert information on ancient Emacs in bytecode headers.  (Bug#39233)

Pointed out by Eli Zaretskii in:
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=39215#14
* doc/emacs/Makefile.in:
* doc/lispintro/Makefile.in:
* doc/lispref/Makefile.in:
* doc/misc/Makefile.in:
* lisp/dired-x.el (top-level):
* lisp/gnus/gnus-sum.el (gnus-summary-mode):
* lisp/progmodes/cperl-mode.el (cperl-info-page): Doc fix; prefer
saying "Info manual" over "info page".

* doc/misc/tramp.texi (GVFS-based methods): Describe default
/media:: file name.

* lisp/net/tramp-cache.el (tramp-get-file-property)
(tramp-set-file-property): Check, whether
`tramp-cache-{g,s}et-count-*' objects are numbers.

* lisp/net/tramp-gvfs.el (top): Don't set global default for
"media" in `tramp-default-host-alist'.
(tramp-gvfs-handler-volumeadded-volumeremoved): New defun.
(top): Register "org.gtk.Private.RemoteVolumeMonitor.VolumeAdded"
and "org.gtk.Private.RemoteVolumeMonitor.VolumeRemoved" signals.
(tramp-get-media-devices): Set defaults for "media" in
`tramp-default-host-alist'.

* lisp/textmodes/paragraphs.el (use-hard-newlines): Clarify that
this minor mode isn't global (bug#20461).

* lisp/simple.el (shell-command):
Ensure a shell command ending with `&' is run asynchronously.

* lisp/simple.el (shell-command):
Ensure a shell command ending with `&' is run asynchronously.

* src/alloc.c (resize_string_data): The string must be multibyte.
When not bothering to reallocate, do bother to change the byte count.
* test/src/alloc-tests.el (aset-nbytes-change) New test.

Pointed out by Eli Zaretskii in:
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=39215#14
* doc/emacs/Makefile.in:
* doc/lispintro/Makefile.in:
* doc/lispref/Makefile.in:
* doc/misc/Makefile.in:
* lisp/dired-x.el (top-level):
* lisp/gnus/gnus-sum.el (gnus-summary-mode):
* lisp/progmodes/cperl-mode.el (cperl-info-page): Doc fix; prefer
saying "Info manual" over "info page".