Accept 1-arg 'substring' calls in byte compiler

Those have been supported by the function implementation since
commit 2014-03-31T12:06:34Z!dmantipov@yandex.ru (Bug#33807).
* lisp/emacs-lisp/bytecomp.el: substring has 1-3 args, not 2-3.

Update from Gnulib

* build-aux/config.guess, lib/regcomp.c, lib/regex.c:
* lib/regex_internal.h, lib/regexec.c: Copy from Gnulib.

Avoid assertion violation in directory-files

* src/dired.c (directory_files_internal): Make sure MATCH is
either nil or a string.  (Bug#33889)

Bump Tramp version to 2.4.1

* doc/misc/trampver.texi:
* lisp/net/tramp.el:
* lisp/net/trampver.el: Change version to "2.4.1".

Fix last change of debug.el

* lisp/emacs-lisp/debug.el (debug): In noninteractive calls do
the buffer text truncation in the debugger buffer.

Tone down diff-refine-removed and diff-refine-added as well

* lisp/vc/diff-mode.el (diff-refine-removed, diff-refine-added):
Change backgrounds in light backgrounds themes (bug#33567).

Port message-checksum to bignums

* lisp/gnus/message.el (message--rotate-fixnum-left): New function.
(message-checksum): Use it instead of assuming fixnum-only arithmetic.
This should fix Bug#33083.

Set up debugger buffer earlier and fit window to it (Bug#32825)

* lisp/emacs-lisp/debug.el (debug): Set up debugger buffer
before displaying it and advise 'display-buffer' to fit the
window to it (Bug#32825).

Tone down diff-added and diff-removed in light themes

* lisp/vc/diff-mode.el (diff-removed, diff-added): Tone down
light background colors (bug#33567).

* lisp/isearch.el (isearch-done): Reset isearch-lazy-highlight-last-string

to nil (bug#33838).
(isearch-lazy-highlight-new-loop)
(isearch-lazy-highlight-buffer-update): Don't set arg ELLIPSIS of
isearch-message to t to not reset the value of isearch-error.

* lisp/vc/diff-mode.el (diff-syntax-fontify-hunk): Add `*' to names

of ephemeral buffers like in " *org-src-fontification:%s*" from
`org-src-font-lock-fontify-block'.  (Bug#33567)
(diff-header, diff-file-header): Tone down light background colors.

Prepend 'rubocop' with 'bundle exec' when appropriate

; Documentation updates

Use rubocop --lint when no .rubocop.yml

* lisp/progmodes/ruby-mode.el (ruby-flymake-rubocop): When no
config file found, only run lint cops (bug#31760).

Provide tramp-adb-handle-make-process

* lisp/net/tramp-adb.el (tramp-adb-file-name-handler-alist):
Add `tramp-adb-handle-make-process' and
`tramp-handle-start-file-process'.
(tramp-adb-handle-make-process): New defun, derived from
`tramp-adb-handle-start-file-process'.  (Bug#28691)

Provide tramp-sh-handle-make-process

* lisp/net/tramp-sh.el (tramp-sh-file-name-handler-alist):
Add `tramp-sh-handle-make-process' and
`tramp-handle-start-file-process'.
(tramp-sh-handle-make-process): New defun, derived from
`tramp-sh-handle-start-file-process'.  (Bug#28691)

* lisp/net/tramp.el (tramp-handle-start-file-process): New defun.

* test/lisp/net/tramp-tests.el (tramp-test30-make-process):
New test.
(tramp-test31-interrupt-process, tramp-test32-shell-command)
(tramp-test33-environment-variables)
(tramp-test33-environment-variables-and-port-numbers)
(tramp-test34-explicit-shell-file-name, tramp-test35-exec-path)
(tramp-test35-remote-path, tramp-test36-vc-registered)
(tramp-test37-make-auto-save-file-name)
(tramp-test38-find-backup-file-name)
(tramp-test39-make-nearby-temp-file)
(tramp-test40-special-characters)
(tramp-test40-special-characters-with-stat)
(tramp-test40-special-characters-with-perl)
(tramp-test40-special-characters-with-ls, tramp-test41-utf8)
(tramp-test41-utf8-with-stat, tramp-test41-utf8-with-perl)
(tramp-test41-utf8-with-ls, tramp-test42-file-system-info)
(tramp-test43-asynchronous-requests, tramp-test44-auto-load)
(tramp-test44-delay-load, tramp-test44-recursive-load)
(tramp-test44-remote-load-path, tramp-test45-unload): Rename.

xref-goto-xref: Highlight the exact symbol after the jump

* lisp/progmodes/xref.el (xref-goto-xref): Bind
'xref--current-item' to highlight the exact symbol after the jump
and not the whole line.

; Don't require semantic/symref, it's unnecessary now

execute-extended-command: Skip waiting in more cases

* lisp/simple.el (execute-extended-command): Don't wait when
there's no binding the current command, and the user doesn't want
to see "shorter" suggestions, or TYPED is nil anyway.

; * etc/HELLO: Remove stray x-charset.  (Bug#33851)

; Add +++ to recent entry in etc/NEWS

; Fix wording in etc/NEWS

Handle `make-process' in Tramp and ange-ftp

* doc/lispref/processes.texi (Asynchronous Processes):
Explain, that not all file name handlers support `make-process'.

* lisp/net/ange-ftp.el:
* lisp/net/tramp-adb.el (tramp-adb-file-name-handler-alist):
* lisp/net/tramp-archive.el (tramp-archive-file-name-handler-alist):
* lisp/net/tramp-gvfs.el (tramp-gvfs-file-name-handler-alist):
* lisp/net/tramp-rclone.el (tramp-rclone-file-name-handler-alist):
* lisp/net/tramp-sh.el (tramp-sh-file-name-handler-alist):
* lisp/net/tramp-smb.el (tramp-smb-file-name-handler-alist):
* lisp/net/tramp-sudoedit.el (tramp-sudoedit-file-name-handler-alist):
* lisp/net/tramp.el (tramp-file-name-for-operation): Add `make-process'.

* lisp/vc/ediff-util.el:
* src/process.c:
* test/src/process-tests.el: Use "file name handler" consequently.

* lisp/simple.el (next-error-no-select): Use save-selected-window.

Let-bind display alist of display-buffer-overriding-action to
`(inhibit-same-window . t)'.  (Bug#32607)

Add file name handler support for 'make-process' (Bug#28691)

* src/process.c (Fmake_process): Add new keyword argument
':file-handler'.
(syms_of_process) <make-process, :file-handler>: Define new symbols.

* lisp/files.el (file-name-non-special): Add support for
'make-process'.

* test/src/process-tests.el (make-process/file-handler/found)
(make-process/file-handler/not-found)
(make-process/file-handler/disable): New unit tests.
(process-tests--file-handler): New helper function.

* test/lisp/files-tests.el
(files-tests-file-name-non-special-make-process): New unit test.

* doc/lispref/files.texi (Magic File Names): Document that
'make-process' can invoke file name handlers.

* doc/lispref/processes.texi (Asynchronous Processes): Document
':file-handlers' argument to 'make-process'.

* etc/NEWS (Lisp Changes in Emacs 27.1): Mention new
:file-handler argument for 'make-process'.

* etc/HELLO: Add missing charset properties for Japanese and Korean.

Macroexpand before evaluating in eval-expression (bis)

* lisp/simple.el (eval-expression): Macroexpand before
evaluating.  This repeats the fix made for Bug#20730 in
another branch of the code a few lines down.

ldap.el: Do not set process-connection-type

* lisp/net/ldap.el (ldap-search-internal): Leave
process-connection-type at its default value.  (Bug#33050)

; Cosmetic changes to etc/NEWS

Use "file name handler" consequently

* doc/lispref/files.texi:
* doc/lispref/processes.texi:
* doc/misc/ediff.texi:
* lisp/simple.el:
* lisp/vc/ediff-ptch.el:
* src/buffer.c:
* src/dired.c:
* src/fileio.c:
* src/image.c:
* src/insdel.c:
* src/w32fns.c: Use "file name handler" consequently.

Fix Bug#33735

* lisp/net/tramp-sh.el (tramp-sh-gio-monitor-process-filter):
Delete empty lines.  (Bug#33735)
(tramp-sh-inotifywait-process-filter): Use `string-match'.
(tramp-set-remote-path): Check for PIPE_BUF but PATH_MAX.

* test/lisp/filenotify-tests.el: Handle $REMOTE_FILE_NOTIFY_LIBRARY.
(file-notify--deftest-remote): Suppress vc-handled-backends.
(file-notify-test08-backup): Do not expect failure on hydra.
(Bug#33735).

* test/lisp/filenotify-tests.el, test/lisp/shadowfile-tests.el:

Don't require tramp-sh, bug#33781 is fixed.

* lisp/emacs-lisp/debug.el (debug): Add display-buffer-below-selected

to display actions of pop-to-buffer, and `(window-min-height . 10)'
to display alist.  (Bug#32825)

* lisp/windmove.el (windmove-delete-in-direction): Change prefix arg C-u

to kill the buffer.  Add prefix arg M-0 to delete the selected window.
(Bug#32790)

* lisp/window.el (switch-to-buffer-obey-display-actions): New defcustom.

(switch-to-buffer): Use it.  (Bug#32790)
(switch-to-buffer-preserve-window-point):  Mention it in docstring.

* lisp/windmove.el (windmove-display-in-direction): Mention it in docstring.

* doc/lispref/windows.texi (Switching Buffers):
Document switch-to-buffer-obey-display-actions.

* lisp/hi-lock.el (hi-salmon, hi-aquamarine): New faces.  (Bug#33398)

(hi-lock-face-defaults): Add them.
(hi-green-b, hi-red-b): Tone down foreground colors.

Merge from origin/emacs-26

081fb69 (origin/emacs-26) Check result from c-backward-token-2 to avo...
f4ea746 cl-make-random-state was not copying its arg

; Merge from origin/emacs-26

The following commits were skipped:

fda43a7 Skip a vc-bzr test if run as root
4370b8e ; Copyright year fix No need to merge to master
305aca0 Backport: Handle unread-command-events consistently (bug#23980)

Merge from origin/emacs-26

4c6c327 Restrict downcasing in elisp xref tests (bug#25534)
ab8ed41 Avoid test failures if directory name looks like a regexp

; Merge from origin/emacs-26

The following commit was skipped:

80e9856 Fix Bug#33524

Merge from origin/emacs-26

5825279 * doc/lispintro/emacs-lisp-intro.texi (Finding More): Fix xref.

; Merge from origin/emacs-26

The following commit was skipped:

e8bb042 More porting to GCC 8 of --enable-gcc-warnings

* lisp/emacs-lisp/map.el: Add support for plists

(map--plist-p, map--plist-delete): New functions.
(map-elt, map-delete, map-length, map-into, map-put!, map-insert)
(map-apply, map-do): Handle the plist case.

* test/lisp/emacs-lisp/map-tests.el (with-maps-do): Add sample plist.
(test-map-put!): The behavior of map-put! is not the same for plists as
for alists.

* test/lisp/net/tramp-tests.el (tramp-test32-environment-variables):

Remove expected failure.

Check result from c-backward-token-2 to avoid infinite loop

This fixes bug #33784.

* lisp/progmodes/cc-fonts.el (c-get-fontification-context): While moving back
over enclosing parentheses, check that c-backward-token-2 actually moves.

Fix Bug#33781

* lisp/net/tramp-sh.el (tramp-set-remote-path): Use a temporary
file for setting $PATH, if it exceeds PATH_MAX on the remote system.
(tramp-send-command-and-read): Ignore errors if NOERROR.  (Bug#33781)

* test/lisp/net/tramp-tests.el (tramp-test34-remote-path): New test.

Skip rather than fail in flymake tests

* test/lisp/progmodes/flymake-tests.el
(flymake-tests--wait-for-backends): Skip rather than fail if
backends are slow to respond.  This always seems like a temporary
system glitch and not something that should be reported as a failure.

Make gnus-newsgroup-name local var available to gnus-summary-mode

* lisp/gnus/gnus-sum.el (gnus-summary-mode-group): New defvar for
  passing gnus-newsgroup-name (a local variable) into the body of
  gnus-summary-mode, so that it's available to gnus-summary-mode-hook.

* lisp/vc/diff-mode.el (diff-syntax-fontify-props): Use font-lock-ensure

unconditionally.  (Bug#33798)

cl-make-random-state was not copying its arg

Problem reported by Xu Chunyang (Bug#33731).
* lisp/emacs-lisp/cl-extra.el (cl-make-random-state):
Use copy-sequence, not copy-tree, so that the record is copied.
* test/lisp/emacs-lisp/cl-extra-tests.el:
(cl-extra-test-cl-make-random-state): New test.

Minor fixes/simplifications to time functions

* doc/lispintro/emacs-lisp-intro.texi (Files List): Simplify.
* doc/lispref/os.texi (Time of Day): Mention format-time-string
as an alternative to current-time-string.
* lisp/arc-mode.el (archive-unixdate, archive-unixtime):
Port better to future versions of Emacs where (COUNT . HZ)
will take precedence to (HI . LO).
* lisp/arc-mode.el (archive-unixtime):
* lisp/calendar/todo-mode.el (todo-insert-item--basic)
(todo-item-done, todo-read-time):
Prefer format-time-string to substringing current-time-string.
* lisp/calc/calc-forms.el (calc-time, calcFunc-now):
Prefer decode-time to parsing the output of current-time-string.
* lisp/emacs-lisp/cl-extra.el (cl--random-time):
Prefer encode-time to hashing the output of current-time-string.
* lisp/gnus/gnus-score.el (gnus-score-headers)
(gnus-score-adaptive):
Avoid stringifying and then reparsing timestamp.
* src/timefns.c (Fencode_time): Omit redundant assignment.

Skip a vc-bzr test if run as root

* test/lisp/vc/vc-bzr-tests.el (vc-bzr-test-faulty-bzr-autoloads):
Skip this test when run as root.  This works around a race
condition in root-specific code in vc-mode-line when deleting a file.

; Do not merge to master, instead fix vc-mode-line there.

* lisp/net/tramp-sh.el (tramp-set-remote-path): Send a warning, if

$PATH exceeds PATH_MAX on the remote system.

* src/editfns.c (Finsert_char): Skip unnecessary fixnum check.

; Copyright year fix
No need to merge to master

Backport: Handle unread-command-events consistently (bug#23980)

* src/keyboard.c (read_char): Events put into `unread-command-events'
with the form (t . EVENT) should always have the t stripped when read
out.
* test/src/keyboard-tests.el: New tests for `unread-command-events'.

(cherry picked from commit 1f3f4b1296613b8cdc0632a68fde86e86ddad866)

Skip a remote filenotify test on hydra

* test/lisp/filenotify-tests.el (file-notify--deftest-remote):
Add optional argument to skip test.
(file-notify-test07-many-events-remote): Skip on hydra.nixos.org.

* lisp/font-lock.el: Use lexical-binding

(font-lock-initial-fontify, font-lock-compile-keywords):
Silence compiler warning.
(font-lock-ensure-function): Fix some problems in last commit.

* lisp/font-lock.el (font-lock-ensure-function): Fix bug#33798

Restrict downcasing in elisp xref tests (bug#25534)

The tests happen to not fail at the moment because find-library-name
now has an extra feature, find-library--from-load-history, which
happens to do a case-insensitive regexp match; but still it seems
better not to rely on this.

* test/lisp/progmodes/elisp-mode-tests.el (xref--case-insensitive):
New variable.
(xref-elisp-test-run, emacs-test-dir): Only downcase if the
filesystem seems to be case-insensitive.

More font-lock improvements for diff-mode

* lisp/vc/diff-mode.el (diff-font-lock-keywords): Use diff-header face
for git index lines (like already used for bzr index lines).
Use diff-file-header face for binary file headers.
(diff-find-source-location): Use expand-file-name for vc-find-revision.
(diff--font-lock-prettify): Use diff-indicator-* faces for
left-fringe indicators.
(diff-syntax-fontify-props): Optimize to not use text-property-not-all
for font-lock-ensure.

* lisp/replace.el (occur-engine-line): Simplify to use font-lock-ensure
without text-property-not-all.

Fontify one-line diffs without the final newline (bug#33567)

* lisp/vc/diff-mode.el (diff-hunk-text, diff-syntax-fontify-hunk):
Skip lines beginning with backslash like "\ No newline at end of file".
(diff-syntax-fontify-hunk): Use string-trim-right.
For one-line diffs use 1 explicitly in the list of line numbers.

Avoid test failures if directory name looks like a regexp

Taken from <https://sources.debian.org/patches/emacs/1:26.1+1-1>
* test/lisp/ibuffer-tests.el (ibuffer-filter-inclusion-3):
* test/lisp/net/tramp-tests.el (tramp-test42-remote-load-path):
Regexp-quote file names to avoid failures with directory names
of the form "build/emacs-i87jK3/emacs-26.1+1/...".

Support (ash INTEGER BIGNUM)

* src/data.c (emacs_mpz_mul_2exp): 2nd arg is now a
nonnegative EMACS_INT not mp_bitcnt_t, to simplify checking.
(Fash): Support COUNT values that are bignums or that
exceed mp_bitcnt_t range.
* test/src/data-tests.el (data-tests-ash-lsh): Test this.

Fix Bug#33524

* lisp/progmodes/flymake-proc.el
(flymake-proc-create-temp-with-folder-structure):
Unquote file-name.  (Bug#33524)

Expect tramp environment test to fail on hydra

* test/lisp/net/tramp-tests.el (tramp-test32-environment-variables):
Expect failure on hydra.nixos.org.

A filenotify test now passes on hydra

* test/lisp/filenotify-tests.el (file-notify-test04-autorevert):
Remote test now passes on hydra.nixos.org, since PATH
workaround for bug#33781.

Fix Bug#33781

* lisp/net/tramp-cache.el (tramp-connection-properties):
* lisp/net/tramp-sh.el (tramp-remote-path)
(tramp-remote-process-environment, tramp-sh-extra-args):
Reinsert autoload cookie.  (Bug#33781)

* test/lisp/net/tramp-tests.el: Do not require tramp-sh before
changing tramp-remote-path.

New convenience functions in seq.el

Functions to access the first or all but the first elements of
sequences have been repeatedly asked for (the last occurrence being
https://github.com/NicolasPetton/seq.el/issues/9).

* lisp/emacs-lisp/seq.el (seq-first, seq-rest): New functions.
* test/lisp/emacs-lisp/seq-tests.el (test-seq-first, test-seq-rest):
New tests for seq-first and seq-rest.

Tiny ert-summarize-tests-batch-and-exit improvement

* lisp/emacs-lisp/ert.el (ert-summarize-tests-batch-and-exit):
Report the details of unexpected passes as well as failures.

Syntactic fontification of diff hunks (bug#33567)

* lisp/vc/diff-mode.el (diff-font-lock-syntax): New defcustom.
(diff-default-directory): New buffer-local variable.
(diff-indicator-removed, diff-indicator-added)
(diff-indicator-changed): Set foreground to distinctive colors.
(diff-context): Remove colors to make room for syntax highlighting.
(diff-font-lock-keywords): Add diff--font-lock-syntax.
(diff--font-lock-cleanup): Remove diff-mode syntax overlays.
(diff--font-lock-syntax, diff--font-lock-syntax--refresh)
(diff-syntax-fontify-revisions, diff-syntax-fontify-hunk)
(diff-syntax-fontify-props): New functions.

* lisp/vc/diff.el (diff-no-select): Set diff-default-directory to
default-directory.

* doc/emacs/files.texi (Diff Mode): Document diff-font-lock-syntax.

* doc/lispintro/emacs-lisp-intro.texi (Finding More): Fix xref.

Make org-protocol-flatten always an alias

* lisp/org/org-protocol.el (org-protocol-flatten):
Rewrite as top-level alias, as per Stefan’s suggestion,
to avoid compiler warnings.

* lisp/emacs-lisp/map.el: Avoid special casing lists.

(map-not-inplace, map-inplace): New errors.
(map-insert): New generic function.
(map-put!): Signal map-not-inplace rather than a generic 'error'.
(map-elt): Use map-not-inplace and map-insert to avoid hardcoding
a special case for lists.

* test/lisp/emacs-lisp/map-tests.el (test-map-put!): Rename from
test-map-put.  Also test the errors signaled.

Avoid tests failures on hydra due to Tramp autoload changes

* test/lisp/filenotify-tests.el, test/lisp/shadowfile-tests.el:
* test/lisp/net/tramp-tests.el: Require tramp-sh before changing
tramp-remote-path.

One more flatten-tree test

* test/lisp/subr-tests.el (subr-tests-flatten-tree):
Add a test for lots of nothing.

Some more flatten-tree aliases

* lisp/allout.el (allout-flatten):
* lisp/progmodes/hideif.el (hif-flatten):
Now an obsolete alias for flatten-tree.  All callers changed.
* lisp/org/org-protocol.el (org-protocol-flatten):
Make it an alias for flatten-tree if available.
* lisp/progmodes/js.el (js--flatten-list):
Remove alias.  We shouldn’t need obsolete function aliases for
private functions.

Improve flatten-tree documentation

* doc/lispref/lists.texi (Building Lists):
* lisp/subr.el (flatten-tree):
Don’t imply that flatten-tree modifies its argument.
Clarify wording.

Improve flatten-tree performance

* lisp/subr.el (flatten-tree): Improve performance by calling
‘cons’ once rather than twice when a cons cell is popped.

Assume ‘emacs’ is defined in Emacs-only code

* src/charset.c, src/coding.c, src/coding.h, src/gmalloc.c:
* src/ralloc.c, src/regex-emacs.c: Simplify slightly by
assuming that ‘emacs’ is defined.  These modules have long
been specific to Emacs, and are not used elsewhere.

More porting to GCC 8 of --enable-gcc-warnings

Backport from master.
I ran into this when building Emacs 26 with GCC 8 on Fedora 29 x86.
* lwlib/lwlib-Xaw.h (xaw_update_one_value, xaw_popup_menu):
* lwlib/lwlib-Xlw.h (xlw_update_one_value, xlw_pop_instance):
* lwlib/lwlib.h (lw_allow_resizing, lw_set_main_areas) [!USE_MOTIF]:
No longer const.
* src/emacs-module.c: Ignore -Wcast-function-type.

Use `flatten-tree' in Tramp

* lisp/net/tramp-compat.el (tramp-compat-flatten-tree): New defun.
(tramp-compat-flatten-list): Remove.

* lisp/net/tramp-sudoedit.el (tramp-sudoedit-send-command): Use it.

New function flatten-tree

Co-authored-by: Basil L. Contovounesios <contovob@tcd.ie>
* doc/lispref/lists.texi: Document `flatten-tree'.

* lisp/progmodes/js.el (js--maybe-join):
* lisp/printing.el (pr-switches):
* lisp/lpr.el (lpr-print-region):
* lisp/gnus/nnimap.el (nnimap-find-wanted-parts):
* lisp/gnus/message.el (message-talkative-question):
* lisp/gnus/gnus-sum.el (gnus-remove-thread)
(gnus-thread-highest-number, gnus-thread-latest-date):
* lisp/eshell/esh-util.el (eshell-flatten-and-stringify):
* lisp/eshell/esh-opt.el (eshell-eval-using-options):
* lisp/eshell/esh-ext.el (eshell-external-command):
* lisp/eshell/em-xtra.el (eshell/expr):
* lisp/eshell/em-unix.el (eshell/rm, eshell-mvcpln-template)
(eshell/cat, eshell/make, eshell-poor-mans-grep, eshell-grep)
(eshell/du, eshell/time, eshell/diff, eshell/locate):
* lisp/eshell/em-tramp.el (eshell/su, eshell/sudo):
* lisp/eshell/em-term.el (eshell-exec-visual):
* lisp/eshell/em-dirs.el (eshell-dirs-substitute-cd, eshell/cd):
* lisp/eshell/em-basic.el (eshell/printnl):
Use new flatten-tree.

* lisp/progmodes/js.el (js--flatten-list):
* lisp/lpr.el (lpr-flatten-list):
* lisp/gnus/message.el (message-flatten-list):
* lisp/eshell/esh-util.el (eshell-flatten-list):
Obsolete in favor of Emacs-wide `flatten-tree'.

* lisp/subr.el (flatten-list): Alias to `flatten-tree' for
discoverability.

* lisp/subr.el (flatten-tree): New defun.

* test/lisp/subr-tests.el (subr-tests-flatten-tree): New test.

Fix Bug#33524

* lisp/progmodes/flymake-proc.el
(flymake-proc-create-temp-with-folder-structure):
Unquote file-name.  (Bug#33524)

Reduce autoloaded objects in Tramp

* lisp/net/tramp-adb.el (tramp-adb-program)
(tramp-adb-connect-if-not-connected, tramp-adb-prompt):
Remove autoload cookie.

* lisp/net/tramp-cache.el (tramp-connection-properties)
(tramp-persistency-file-name): Remove autoload cookie.

* lisp/net/tramp-ftp.el (tramp-ftp-enable-ange-ftp):
Use `tramp-autoload' cookie.

* lisp/net/tramp-gvfs.el (tramp-gvfs-zeroconf-domain):
Remove autoload cookie.

* lisp/net/tramp-rclone.el (tramp-rclone-program): Remove autoload
cookie.
(tramp-set-completion-function): Use `tramp--with-startup'.

* lisp/net/tramp-sh.el (tramp-inline-compress-start-size)
(tramp-copy-size-limit, tramp-histfile-override)
(tramp-use-ssh-controlmaster-options, tramp-remote-path)
(tramp-remote-process-environment, tramp-sh-extra-args):
Remove autoload cookie.
(tramp-stat-marker, tramp-stat-quoted-marker): Move to tramp.el.

* lisp/net/tramp-smb.el (tramp-smb-program)
(tramp-smb-acl-program, tramp-smb-conf)
(tramp-smb-winexe-program, tramp-smb-winexe-shell-command)
(tramp-smb-winexe-shell-command-switch): Remove autoload cookie.

* lisp/net/tramp-sudoedit.el (server, tramp-sh): Do not require.

* lisp/net/tramp.el (tramp--startup-hook): Define.
(tramp-stat-marker, tramp-stat-quoted-marker): New defconsts,
taken from tramp-sh.el.

* test/lisp/net/tramp-archive-tests.el (tramp-copy-size-limit)
(tramp-persistency-file-name): Declare.

* test/lisp/net/tramp-tests.el (tramp-connection-properties)
(tramp-display-escape-sequence-regexp)
(tramp-inline-compress-start-size, tramp-remote-path): Declare.

* lisp/emacs-lisp/macroexp.el: Don't hide backtrace

(macroexp--compiler-macro): Use condition-case-unless-debug.

Jsonrpc error handlers can now safely call jsonrpc-shutdown

Previously, if an error handler called jsonrpc-shutdown, and if that
error handler was being called from the process sentinel,
jsonrpc-shutdown would infloop waiting for jsonrpc-sentinel-done to be
set.

Rename the process property jsonrpc-sentinel-done to
jsonrpc-sentinel-cleanup-started, arrange for it to be set earlier
in the sentinel, and also check for it earlier in jsonrpc-shutdown.

* lisp/jsonrpc.el (Version): Bump to 1.0.7.
(jsonrpc--process-sentinel): Set jsonrpc-sentinel-cleanup-started
a bit earlier than previous jsonrpc-sentinel-done.
(jsonrpc-shutdown): Query jsonrpc-sentinel-cleanup-started

Update from Gnulib

This incorporates:
2018-12-16 regex: propagate fix for glibc bug 18040
2018-12-16 obstack, libc-config: Support HP-UX cc in C99 mode
2018-12-15 regex: work around a bug in glibc-2.27 and prior
2018-12-13 localtime-buffer: Avoid endless recursion
* build-aux/config.guess, build-aux/config.sub, lib/cdefs.h:
* lib/gettext.h, lib/localtime-buffer.c, lib/regexec.c, m4/regex.m4:
Copy from Gnulib.

* lisp/net/tramp: Rework mutual dependencies

Functionally split tramp-loaddefs.el into two parts: one part run
while loading it at the very beginning of loading tramp.el (holding plain
autoloads and declarations), and another run at the very end of loading
tramp.el (holding setup code).
This should reduce infinite-recursion problems while loading.

* lisp/net/tramp.el: Require tramp-loaddefs at beginning.
Run (new and internal) tramp--startup-hook at the end.
Remove all tramp-autoloads.  Prefer tramp--with-startup over
eval-after-load.
(tramp--with-startup): New macro.
(tramp-set-syntax): Show the new value rather than the old value in the
error message.
(tramp-syntax-values): Explicitly return 'values'.
(tramp-prefix-format, tramp-prefix-regexp, tramp-method-regexp)
(tramp-postfix-method-format, tramp-postfix-method-regexp)
(tramp-prefix-ipv6-format, tramp-prefix-ipv6-regexp)
(tramp-postfix-ipv6-format, tramp-postfix-ipv6-regexp)
(tramp-postfix-host-format, tramp-postfix-host-regexp)
(tramp-remote-file-name-spec-regexp, tramp-file-name-structure)
(tramp-completion-file-name-regexp): Don't initialize in the declaration,
since it's recomputed at the end anyway.
(tramp-time-dont-know, tramp-time-doesnt-exist): Move before first use.

* lisp/net/tramp-compat.el: Don't require tramp-loaddefs any more.
(tramp-compat-tramp-syntax): Declare tramp-syntax.

* lisp/net/tramp-smb.el:
* lisp/net/tramp-rclone.el:
* lisp/net/tramp-gvfs.el:
* lisp/net/tramp-ftp.el:
* lisp/net/tramp-adb.el: Wrap all autoloaded setup operations within
tramp--with-startup.

* lisp/net/tramp-sh.el: Wrap all autoloaded setup operations within
tramp--with-startup.
(tramp-display-escape-sequence-regexp)
(tramp-device-escape-sequence-regexp): Don't tramp-autoload any more.
(tramp-stat-marker): Use eval-and-compile rather than tramp-autoload.

* lisp/net/tramp-sudoedit.el: Wrap all autoloaded setup operations within
tramp--with-startup.
Require tramp-sh at compile-time to precompute some regexps based on
tramp-stat-marker.

Add Tramp sudoedit method

* doc/misc/tramp.texi (Quick Start Guide): New section "Using sudoedit".
(External methods) <sudoedit>: Describe.

* lisp/net/tramp-adb.el (tramp-adb-file-name-handler-alist):
* lisp/net/tramp-gvfs.el (tramp-gvfs-file-name-handler-alist):
* lisp/net/tramp-rclone.el (tramp-rclone-file-name-handler-alist):
* lisp/net/tramp-sh.el (tramp-sh-file-name-handler-alist)
* lisp/net/tramp-smb.el (tramp-smb-file-name-handler-alist):
Add handler.

* lisp/net/tramp-sh.el (tramp-sh-handle-set-file-uid-gid): Rename from
`tramp-sh-handle-set-file-uid-gid'.  Handle only remote file names.

* lisp/net/tramp-sudoedit.el: New file.

* lisp/net/tramp.el (tramp-file-name-for-operation): Handle also
`tramp-set-file-uid-gid'.
(tramp-set-file-uid-gid): New defun.
(tramp-get-local-uid, tramp-get-local-gid): Cache result.

* test/lisp/net/tramp-tests.el (tramp--test-sudoedit-p): New defun.
(tramp-test20-file-modes, tramp-test22-file-times)
(tramp--test-sudoedit-p): Use it.

Rephrase a confusing sentence in the jsonrpc.el manual

* doc/lispref/text.texi (JSONRPC Overview): Rephrase first
sentence on building JSONRPC applications.

Expect two epg tests to fail on hydra

* test/lisp/epg-tests.el (epg-decrypt-1, epg-roundtrip-1):
These currently fail for unknown reasons on hydra.nixos.org.

; * src/macuvs.h: Regenerate with new header.

Merge from origin/emacs-26

fa953b5 (origin/emacs-26) Fix an epg test for recent GnuPG versions (...
3015636 Document font structure layout constraints
f14d574 Document font structure layout constraints
f519aa1 Fix display of line numbers in empty lines beyond EOB
24b5026 Fix redisplay when a window's scroll bar or fringes are changed
5d1b158 Tiny markup fix in Elisp manual

Ensure flymake tests use gcc rather than $CC

* test/lisp/progmodes/flymake-resources/Makefile: Force use of gcc.
This seems to be what the tests expect.  (Bug#33735)

Suppress filenotify remote test failures on hydra.nixos.org

* test/lisp/filenotify-tests.el (file-notify--deftest-remote):
Add optional argument to pass expected-result.
(file-notify-test04-autorevert-remote)
(file-notify-test08-backup-remote): Expect failure on hydra (bug#33735).

Fix an eshell ls dired test for non-recent files

* test/lisp/eshell/em-ls-tests.el (em-ls-test-bug27844):
Work around an eshell issue with non-recent files.  (Bug#33734)

Fix an epg test for recent GnuPG versions (bug#33439)

* test/lisp/epg-tests.el (epg-decrypt-1):
Tell recent GnuPG (e.g. 2.2.11) not to worry about missing MDC.

* make-dist: Improve no-byte-compile check.

* make-dist: Improve tempfile handling.

Prompted by /tmp/out existing and being owned by another user.