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* README:
* configure.ac:
* msdos/sed2v2.inp:
* nt/README.W32: Bump Emacs version.

* doc/lispref/processes.texi (Asynchronous Processes): Note that input
may read when sending data as well.
(Output from Processes): Note that functions which send data may also
trigger reading from processes.
(Input to Processes, Filter Functions): Note that filter functions may
be called recursively.

Ensure that non-regexp strings used with `looking-at' are quoted.
* lisp/replace.el (perform-replace): Quote regexp (Bug#37073).
* test/lisp/replace-tests.el (replace-tests-perform-replace-regexp-flag):
New variable.
(replace-tests-with-undo): Use it.
(query-replace-undo-bug37073): Add tests.

* admin/unidata/NormalizationTest.txt:
* admin/unidata/UnicodeData.txt: Add U+32FF SQUARE ERA NAME REIWA.
Do not merge to master.

* test/lisp/international/ucs-normalize-tests.el
(ucs-normalize-tests--failing-lines-part1)
(ucs-normalize-tests--failing-lines-part2): Update.  Do not
merge to master.

* etc/NEWS: Mention the change.

* lisp/international/characters.el (char-width-table): Fix a
typo in zero-width characters.

* admin/notes/unicode: Mention changes to be done in
setup-default-fontset in fontset.el.  (Bug#14461)

* lisp/emacs-lisp/lisp-mode.el (lisp-indent-calc-next): Stop trying to
skip over strings if we've hit the end of buffer.
* test/lisp/emacs-lisp/lisp-mode-tests.el
(lisp-indent-unfinished-string): New test.

* lisp/composite.el (compose-gstring-for-graphic)
(compose-gstring-for-terminal): Add comments that explain
Unicode General Category mnemonics in human-readable terms.
(Bug#14461)

* src/xdisp.c: Add to the commentary the description of
stop_charpos, and how it is used during iteration.

* doc/misc/dired-x.texi (Omitting Variables)
(Local Variables, Shell Command Guessing)
(Advanced Cleaning Variables, Special Marking Function): Fix
markup and indexing.  (Bug#14212)

* lisp/speedbar.el (speedbar-supported-extension-expressions):
Fix a typo in the doc string.  (Bug#37041)

* doc/emacs/display.texi (Fringes): Add cross-reference to
where indicate-empty-lines is described.
(Useless Whitespace): Add an @anchor for a more accurate
cross-reference in "Fringes".

* lisp/play/pong.el (pong-move-left pong-move-right): Refer to the
right bats and directions of movement.  (Bug#36959)

* lisp/simple.el (append-to-buffer, prepend-to-buffer)
(copy-to-buffer): Doc fixes.

* lisp/progmodes/octave.el (octave-eldoc-function-signatures): Fix the
regexp used, so no match happens when there is no defined function FN.
Also, tweak the regexp to support GNU Octave 4.2.x and newer.  (Bug#36459)

* lisp/man.el (Man-build-man-command): On MS-Windows, redirect
stdin of 'man' to the null device, to make sure Groff exits
immediately after formatting the man page.

pending_signals is often set if no quit is pending.  This results in
bugs in module code if the module returns but no quit is actually
pending.

* src/emacs-module.c (module_should_quit): Use QUITP macro to check
whether the caller should quit.

* src/eval.c: Remove obsolete comment.

* doc/misc/gnus.texi (Group Parameters, Expiring Mail):
* lisp/gnus/gnus-cus.el (gnus-group-parameters): Clarify
descriptions of nnmail-expiry, nnmail-expiry-wait, and
nnmail-expiry-wait-function.
* lisp/gnus/nnmail.el (nnmail-expiry-wait)
(nnmail-expiry-wait-function): Clarify docstrings and fix custom
:types (bug#36850).

* doc/lispref/debugging.texi (Syntax Errors, Excess Open)
(Excess Close): Name the commands invoked by the key
sequences.  Add cross-references to appropriate sections of
the Emacs manual.  (Bug#21385)

(cherry picked from commit faafd467)

* doc/emacs/programs.texi (Left Margin Paren): Add index for "\( in
strings".
* doc/lispref/positions.texi (List Motion): Add index, and cross
reference.

* lisp/window.el (fit-window-to-buffer): Fix doc-string.

Suggested by Drew Adams <drew.adams@oracle.com>

Not all the kill commands save the text in the kill ring
by default (e.g. `kill-rectangle').
It is more precise to just say that the kill commands save
the text and do not change the buffer (Bug#36741).
* lisp/view.el (view-mode): Update docstring.

* src/process.c (Fset_process_filter): Call add_process_read_fd
according to the state of process filter before it's updated.  This
restores the correct functioning as it was before 2016-02-16 "Allow
setting the filter masks later".  Inline the set_process_filter_masks
call instead of fixing it that function, because it is also called
from connect_network_socket, and we don't want to change the behavior
of that function so close to release.
* test/src/process-tests.el (set-process-filter-t): New test.

* lisp/term.el: Mention both forms of directory tracking in
commentary.  Remove obsolete ChangeLog comments.  Move more relevant
summary comments to the top.

Suggested by Stefan Monnier.
Ref: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=19537#8

* doc/lispref/package.texi (Package Archives): Don't document
package-x upload functions in the elisp manual, since they are not
very commonly used.  (Bug#19537)
* lisp/emacs-lisp/package-x.el (package-archive-upload-base)
(package-upload-buffer, package-upload-file): Add to the doc strings
any details removed from the elisp manual that would otherwise be
missing.

For discussion, see the following thread:
https://lists.gnu.org/archive/html/emacs-devel/2019-07/msg00528.html
* doc/misc/gnus.texi (X-Face): Fix cross-reference.
(Gravatars):
* lisp/gnus/gnus-gravatar.el (gnus-gravatar-too-ugly):
* lisp/image/gravatar.el (gravatar-cache-ttl, gravatar-rating)
(gravatar-size): Clarify user option descriptions.
(gravatar-retrieve, gravatar-retrieve-synchronously): Document
return value.

* lisp/term.el (term-emulate-terminal): Avoid errors if the whole
decoded string is eight-bit characters.  Don't attempt to save the
string for next iteration in that case.
* test/lisp/term-tests.el (term-decode-partial)
(term-undecodable-input): New tests.

(Bug#36693)

Copyright-paperwork-exempt: yes