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with body extracted from INITVALUE of defconst (bug#35689).
Bind search-spaces-regexp to nil (bug#35802).

* test/lisp/char-fold-tests.el: Relocate helpers to file beginning.
(char-fold--test-bug-35802): New test.

Remove redundant :group args.
(gnus-async-post-fetch-function): Make it always be a function.
(gnus-make-async-article-function, gnus-async-prefetch-headers):
Use a closure rather than `(lambda ...)

Using this setting:

    (setq message-send-mail-function 'message-send-mail-with-sendmail)
    (setq sendmail-program "msmtp")

the message seding is handled by an external program, so no Unicode
encoding is performed in Emacs. Thus Emacs must not assert that the
Unicode encoding was performed.

* lisp/gnus/gnus-async.el (gnus-async-with-semaphore): Use `declare`.
(gnus-async-prefetch-next): Don't assume gnus-data-number == car.

* lisp/gnus/gnus-sum.el (gnus-data-find-in): New function.
(gnus-data-find, gnus-data-find-list): Use it.
(gnus-summary-article-subject): Make it a function.
(gnus--dummy-data-list): New const.
(gnus-update-summary-mark-positions): Use it.

* lisp/gnus/gnus-sum.el (gnus-data): Use cl-defstruct.
(gnus-data-set-pos, gnus-data-set-header, gnus-data-set-mark)
(gnus-data-set-number): Delete macros; use `setf` instead.
(gnus-data-unread-p, gnus-data-read-p, gnus-data-pseudo-p, gnus-data-find)
(gnus-summary-skip-intangible, gnus-summary-article-number):
Redefine as inlinable functions rather than macros.

* lisp/gnus/gnus.el: Adjust autoloads for the macros turned functions.

* lisp/help-fns.el (help-fns--first-release): Return a "button".
(help-fns--mention-first-release): Preserve the string's text-properties.

* lisp/help-mode.el (help-news): New button type.

It's previous default was c-lineup-inexpr-block.  This change is mainly to
prevent excessive indentation of the innards of C++ lambda functions.

* lisp/progmodes/cc-vars.el (c-offsets-alist): Amend the offset for inlambda
to 0.

* doc/misc/cc-mode.texi (FAQ): Amend the answer to the question about this
matter.

* test/lisp/progmodes/flymake-tests.el (perl-backend)
(included-c-header-files, recurrent-backend):
Skip on hydra.nixos due to frequent intermittent failures.  (Bug#32764)

* lisp/play/morse.el: Use lexical-binding.
* lisp/play/studly.el: Use lexical-binding.
* test/lisp/play/morse-tests.el: New file.
* test/lisp/play/studly-tests.el: New file.

* lisp/textmodes/paragraphs.el: Use lexical-binding.
(repunctuate-sentences): Make it work non-interactively.
* test/lisp/textmodes/paragraphs-tests.el: New file.

Problem reported by Mauro Aranda (Bug#35945).
* .gitignore: Replace .dir-locals?.el with .dir-locals-2.el.

* lisp/emacs-lisp/cl-seq.el (cl-assoc):	Use assq for fixnums.

* lisp/emacs-lisp/cl-seq.el (cl-member, cl-assoc): Work with bignums.
* test/lisp/emacs-lisp/cl-seq-tests.el (cl-seq-bignum-eql): New.

* rcirc.el: (rcirc-default-part-reason, rcirc-default-quit-reason):
New customizable vars.
(rcirc-cmd-quit, rcirc-cmd-part): Consult them.

Copyright-paperwork-exempt: yes

* lisp/net/rcirc.el (part): Split out channel name and part reason.
* doc/misc/rcirc.texi (rcirc commands): Clarify that channel name may
be provided to /part.

... and empty Todo comment section.

(Final Commit)

* lisp/progmodes/cc-engine.el (c-semi-trim-near-cache): Correct a comparison
with the wrong ...-limit variable.
(c-semi-pp-to-literal): Remove a wrong setting of c-lit-pos-cache-limit.
(c-full-get-near-cache-entry): Eliminate extravagant and unneeded coding.
(c-state-cache-init, c-record-parse-state-state): No longer manipulate
c-lit-pos-cache, which is no longer regarded as part of c-parse-state.

* lisp/progmodes/cc-mode.el (c-basic-common-init): Call
c-truncate-lit-pos-cache to initialize the literal cache.

(Intermediate commit)

* lisp/progmodes/cc-engine.el, lisp/progmodes/cc-fonts.el
* lisp/progmodes/cc-mode.el : Rename:
c-state-semi-nonlit-pos-cache -> c-lit-pos-cache,
c-state-semi-nonlit-pos-cache-limit -> c-lit-pos-cache-limit,
c-state-semi-nonlit-near-cache -> c-semi-lit-near-cache,
c-truncate-semi-nonlit-pos-cache -> c-truncate-lit-pos-cache,
c-state-semi-trim-near-cache -> c-semi-trim-near-cache,
c-state-semi-get-near-cache-entry -> c-semi-get-near-cache-entry,
c-state-semi-put-near-cache-entry -> c-semi-put-near-cache-entry,
c-state-semi-pp-to-literal -> c-semi-pp-to-literal,
c-state-full-pp-to-literal -> c-full-pp-to-literal,
c-state-semi-trim-cache -> c-trim-lit-pos-cache.

* lisp/progmodes/cc-engine.el (c-semi-near-cache-limit): New variable.
(c-truncate-lit-pos-cache): This now truncates the cache variables for all
three lit- sub-caches.
(c-semi-put-near-cache-entry): Increase c-semi-near-cache-limit to the
position of the new entry.
(c-full-near-cache-limit, c-full-lit-near-cache): New variables.
(c-full-trim-near-cache, c-full-get-near-cache-entry)
(c-full-put-near-cache-entry): New functions.
(c-full-pp-to-literal): Amend to use the new functions, and to optimize the
use of the available caches, similarly to c-semi-pp-to-literal.

008b263f (origin/emacs-26, emacs-26) * lisp/gnus/gnus.el: Mark autoloa...
daf32f1f Speed up redisplay of HELLO
d8a6d82c Improve documentation of 'safe-local-variable' property

# Conflicts:
#	etc/HELLO

The following commit was skipped:

b3df3729 * lisp/emacs-lisp/package.el: Obey buffer-file-coding-system ...

134edc10 Warn about wrong number of args for subrs (Bug#35767)
5f01af6c Use plain symbols for eieio type descriptors (Bug#29220)
4b24b018 Pacify GCC 9 -Wredundant-decls

The following commits were skipped:

7871c3dc Pacify librsvg 2.45.1 and later
d93f4bda Simplify xd_signature to pacify GCC 9

b2e44b42 Pacify GCC when compiling unexelf.c on Fedora 30

The following commit was skipped:

fa9e575c Suppress GCC 9 “no longer supported” messages

1b2f83bb Fix docstring of bookmark-get-bookmark

The following commit was skipped:

c4d4dcf1 Avoid infloop in read-multiple-choice (Bug#32257)

2168165e ; * doc/lispref/nonascii.texi (Explicit Encoding): Fix typo.
8f18d121 Improve documentation of decoding into a unibyte buffer
7681a57b Remove redundants "See" before @xref or @pxref (Bug#35793)
9bee7622 ; * src/coding.c: Improve commentary.  (Bug#34765)
e61349c2 Fix customization type of recentf-max-saved-items

# Conflicts:
#	src/coding.c

This avoids a build failure.

* etc/HELLO: Set 'inhibit-compacting-font-caches' non-nil
locally.  (Bug#36032)

* lisp/files.el: Add 'inhibit-compacting-font-caches' to the
list of built-in variables for which we set up
'safe-local-variable' properties.

* lisp/textmodes/page.el: Use lexical-binding.
(forward-page): Replace `(if x nil y)' with `(unless x y)'.

* test/lisp/textmodes/page-tests.el: New file with tests for page.el.

* lisp/timezone.el: Use lexical-binding.
* test/lisp/timezone-tests.el: New file.

* doc/lispref/variables.texi (File Local Variables): Document
how to define 'safe-local-variable' properties for built-in
variables.

* lisp/autoinsert.el: Use lexical-binding.
Remove redundant :group args.
(auto-insert): Simplify.

* test/lisp/autoinsert-tests.el: New file with tests for
autoinsert.el.

* nt/mingw-cfg.site (gl_cv_func_pthread_sigmask_macro): Set to
"no", to avoid compiling Gnulib's pthread_sigmask.c.
Reported by Richard Copley <rcopley@gmail.com>.