* lisp/mh-e/mh-acros.el (mh-dlet*): Suppress warnings about
prefix-less bindings.
* lisp/mh-e/mh-mime.el (mh-insert-mime-security-button): Remove
the warning removal here.
(mh-insert-mime-button): And here.

* lisp/language/tai-viet.el ("TaiViet"): Update the doc
string.  Suggested by Jim Brase <jim_brase@sil.org>.
(Bug#5806)

* etc/HELLO: Add a Tai Viet entry.

* src/fileio.c (file_test_errno): Now extern.
* src/lread.c (Fload): Use file_test_errno instead,
since this is really just a file test (the attributes
are not given to the user).

* src/fileio.c (file_directory_p): If the file exists, but is
not a directory, set errno to ENOTDIR, like the Posix branch
does; openp expects that.

* test/lisp/net/tramp-tests.el (tramp-test11-copy-file):
Simplify check for owncloud/nextcloud connections.

* doc/misc/tramp.texi (Remote shell setup): New subsection
"Changing the default remote shell".

* lisp/net/tramp-sh.el (tramp-sh-extra-args): Add entry for zsh.

Problem reported by Tino Calancha (Bug#37445) and others.
* src/fileio.c (PICKY_EACCES): New constant, false by default.
(file_test_errno): Ignore EACCES if not picky.
(check_file_access): Investigate EACCES problems further
if picky.

* src/callproc.c (init_callproc): Use file_access_p rather
than Ffile_exists_p during startup (Bug#37445).

Signal an error for file-oriented errors that are not tame
errors like ENOENT and ENOTDIR (Bug#37389).
Do this for primitives exposed to Lisp; the lower
level internal C API merely makes errno values available
to higher-level C code.
* doc/lispref/files.texi (Testing Accessibility)
(File Attributes, Extended Attributes): Do not say that the
functions return nil when the return value cannot be determined.
* etc/NEWS: Mention the change.
* src/dired.c (Ffile_attributes): Fix doc string confusion
about opening a file vs getting its attributes.
(file_attributes): Signal serious errors.
* src/fileio.c (check_existing, check_executable)
(check_writable): Remove.  All callers changed to use
check_file_access or file_access_p.
(file_access_p, file_metadata_errno, file_attribute_errno)
(file_test_errno, check_file_access, check_emacs_readlinkat):
New functions.
* src/fileio.c (Ffile_executable_p, Ffile_readable_p)
(Ffile_name_case_insensitive_p, Frename_file, Ffile_exists_p):
(Ffile_symlink_p, Ffile_directory_p)
(Ffile_accessible_directory_p, Ffile_regular_p)
(Ffile_selinux_context, Ffile_acl, Ffile_modes)
(Ffile_newer_than_file_p, Fset_visited_file_modtime)
(Ffile_system_info):
* src/filelock.c (unlock_file, Ffile_locked_p):
* src/lread.c (Fload):
Signal serious errors.
* src/fileio.c (Ffile_writable_p): Remove unnecessary CHECK_STRING.
(emacs_readlinkat): Now static.
* src/filelock.c (current_lock_owner, lock_if_free): Return a
positive errno on error, and the negative of the old old value
on success.  All callers changed.
* src/lread.c (openp): Propagate serious errno values to caller.

* src/xwidget.c : Substituted WebKitGTK+ API calls and use
JavaScriptCore GLib API instead.

It fixes a bug introduced by commit
'query-replace-regexp undo: Update next-replacement after undo'
(30c4f35a)

See https://lists.gnu.org/archive/html/emacs-devel/2019-09/msg00364.html
* lisp/replace.el(perform-replace): Rename variable
to next-replacement-replaced.

* lisp/mh-e/mh-mime.el (mh-insert-mime-security-button): Suppress
warnings about un-prefixed dynamic variables.
(mh-insert-mime-button): Ditto.

* lisp/net/net-utils.el (nslookup--ipv6-expand): Rename to avoid
make prefix more regular.
(nslookup-host-ipv6): Rename call.

* lisp/leim/quail/ipa-praat.el ("ipa-praat"): Update to match
more recent versions of Praat (bug#36198).

- \rh was used for ram's horns (a vowel) and rhoticity hook (a
  diacritic).  Praat uses \hr for the hook, so I made that changed.

- \e3v for the slightly rounded diacritic seems to have been a typo
  related to the use of e in the example.  Changed it to \3v to match
  Praat.

- Added examples to the table of tone diacritics

- Added \^h for superscript h

- Added \^H for superscript h with hook

- Added \^w for superscript w (labialization)

- Added \^j for superscript j (palatalization)

- Added \^g for superscript symbol (velarization)

- Added \^9 for superscript symbol (pharyngealization)

* src/w32font.c (struct font_callback_data): New member
'known_fonts'.
(w32font_list_internal, w32font_match_internal): Set up
match_data.known_fonts if the font spec includes :script that
names one of the non-USB scripts.
(add_font_entity_to_list): If font_matches_spec returns zero
for a font, and we have some fonts in match_data->known_fonts,
consider the font to be a match if it is named in known_fonts.
(font_supported_scripts): Update the Unicode Subranges.  In
particular, map bit 74 to 'burmese', as this is the name Emacs
uses, not 'myanmar'.  Add a list of scripts that have no USBs
defined for them.
(syms_of_w32font) <Qburmese, Qcuneiform_numbers_and_punctuation>
<Qaegean_number, Qw32_non_USB_fonts>: New symbols.

* lisp/term/w32-win.el (w32-no-usb-subranges): New defconst.
(w32--filter-USB-scripts, w32-find-non-USB-fonts): New functions.
(w32-non-USB-fonts): New defvar.

* lisp/international/fontset.el (setup-default-fontset): Add
more scripts to automatic setup by representative characters.

* doc/emacs/msdos.texi (Windows Fonts): Document
'w32-find-non-USB-fonts' and 'w32-non-USB-fonts'.

* etc/NEWS: Mention 'w32-find-non-USB-fonts' and
'w32-non-USB-fonts'.

* src/dired.c (directory_files_internal):
Pacify GCC 7.4.0-1ubuntu1~18.04.1 x86-64.

* src/fileio.c (blocks_to_bytes): Convert the byte count to an
integer, since we have bignums now.  This avoids possible rounding
errors for file systems containing more than 8 PiB or so.

* lisp/emacs-lisp/autoload.el (autoload-ensure-file-writeable):
* lisp/files.el (after-find-file):
* lisp/gnus/gnus-start.el (gnus-dribble-read-file):
* lisp/htmlfontify.el (hfy-copy-and-fontify-file):
* lisp/server.el (server-ensure-safe-dir):
Avoid a race when getting file permissions.

* lisp/vc/vc-cvs.el (vc-cvs-revert): 3950 (#o7556) is wrong as
it keeps other-write but disables other-execute permissions.
3949 (#o7555) was intended here.  Use octal notation for clarity.

* lisp/imenu.el (imenu--make-index-alist): Don't add a *Refresh*
item if we're auto-refreshing (bug#30449).

* doc/misc/smtpmail.texi (Server workarounds): Mention it (bug#34177).

* lisp/mail/smtpmail.el (smtpmail-retries): New variable.
(smtpmail-via-smtp): Use it.

* lisp/cus-edit.el (custom-notify): Allow more editing commands to
work in the Customize buffers (bug#31205).

Copyright-paperwork-exempt: yes

* lisp/mail/smtpmail.el (smtpmail-via-smtp): Try resending when
getting a transient error message (bug#34177).

Most of the directives were wrong anyway.  Apparently
traditional lint hasn’t been used to check Emacs for years.
* src/callint.c (Finteractive):
* src/cm.c (evalcost):
* src/emacs.c (main):
* src/eval.c (call1, call2, call3, call4, call5, call6, call7, call8):
* src/fns.c (concat2, concat3, nconc2):
* src/term.c (calculate_ins_del_char_costs):
Omit ARGSUSED comments.
* src/eval.c (call1): Omit VARARGS comment.

* test/lisp/emacs-lisp/backquote-tests.el: New file (bug#37432).

* src/dired.c (directory_files_internal):
Check ‘match’ before doing anything heavyweight.
Move decls closer to use.
Remove obsolete comments about GC.
No need to encode ‘directory’ or to call multibyte_chars_in_text.
Remove no-longer-needed bug check.
Skip finalname construction if file_attributes fails.

* lisp/gnus/mm-view.el (mm-inline-large-images-proportion): Doc
clarification.

* doc/misc/emacs-mime.texi (Display Customization): Document it.

* lisp/gnus/mm-decode.el (mm-inline-large-images): Change default
to `resize'.

* lisp/gnus/mm-decode.el (mm-inline-large-images): Clarify doc string.

* lisp/tooltip.el (tooltip-show-help-non-mode): Only clear the
echo area when the current message displayed is a tooltip message
(Bug#3192).

* doc/emacs/maintaining.texi (VC Directory Commands): Use @file
for files.

* doc/emacs/maintaining.texi (VC Directory Commands): Document
vc-dir-ignore.

* src/w32.c (w32_accessible_directory_p): Set errno, so that
file_accessible_directory_p does on MS-Windows, to live up to
its callers' expectations.