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* .gitignore: modules/mod-test/Makefile was renamed to
test/data/emacs-module/Makefile.
Omit [0-9]*.core, subsumed by *.core.
test/indent/*.new was renamed to test/manual/indent/*.new.
Add *.swp, for Vim.

* lisp/whitespace.el (whitespace-display-char-on): Correct the way
the original buffer-display-table is saved and restored when
global-whitespace-mode is active.  (Bug#26892)

* test/lisp/whitespace-tests.el
(whitespace-tests-whitespace-mode-on): New function.
(whitespace-tests-display-tables): New test.

Copyright-paperwork-exempt: yes

* test/lisp/net/tramp-tests.el (tramp--test-afp-or-smb-p): New defun.
(tramp-test05-expand-file-name-relative): Use it.
(tramp-test38-unload): Run only in batch mode.

* lisp/net/tramp-sh.el (tramp-ssh-controlmaster-options): Set also
"ConnectTimeout" during test.  Otherwise, OpenSSH 7 will hang.

* doc/lispref/strings.texi (Creating Strings): Rearrange text to
make it more readable.  (Bug#26925)

* lisp/mail/rfc2231.el (rfc2231-encode-string):
* lisp/mail/rfc2047.el (rfc2047-encode-parameter):
* lisp/mail/rfc2045.el (rfc2045-encode-string): Fix typos in doc
strings.  (Bug#26103)

If dladdr(3) isn't available or didn't work, the printed
representation of a module function will not include the file name,
but only the address.  Make the tests pass in that case.

* test/src/emacs-module-tests.el (module-function-object): Fix match for
module function printed representation

* lisp/emacs-lisp/subr-x.el (string-trim-left, string-trim-right)
(string-trim): Add optional args that serve as defaults per the
original behavior.  (Bug#26908)

* lisp/cus-start.el (standard): Fix typo in value of auto-hscroll-mode.

* lib-src/emacsclient.c (main, decode_options)
(print_help_and_exit, longopts): New option '--tramp' / '-T' which
specifies how emacs should use tramp to find remote files.

* doc/emacs/misc.texi (TCP Emacs server): New subsection describing
the various knobs to tune server.el for TCP opereation.
(emacsclient Options): Reference "TCP Emacs server" from description of
--server-file.  Document the new '--tramp' / '-T' options.
* doc/emacs/emacs.texi (Top): Update the top-level menu.

* etc/NEWS: Mention the new option.

Problem reported by YAMAMOTO Mitsuharu in:
http://lists.gnu.org/archive/html/emacs-devel/2017-05/msg00342.html
This is related to the fix for Bug#26397.
* src/callproc.c (call_process_cleanup, call_process) [!MSDOS]:
Report internal error if wait_for_termination fails.
* src/sysdep.c (get_child_status): Return -1 if waitpid is
buggy, instead of aborting.
(wait_for_termination): Return bool success value.
All callers changed.

* lisp/cus-start.el (standard) <auto-hscroll-mode>: Adjust the
defcustom form.  Suggested by Stephen Berman <stephen.berman@gmx.net>.

* src/fileio.c (file_name_case_insensitive_p):
Don’t compile the (DARWIN_OS_CASE_SENSITIVE_FIXME == 2)
code unless DARWIN_OS_CASE_SENSITIVE_FIXME is 2.
Problem reported by Philipp Stephani in:
http://lists.gnu.org/archive/html/emacs-devel/2017-05/msg00495.html

* configure.ac (WERROR_CFLAGS): Omit -Wdouble-promotion if clang.
Problem reported by Philipp Stephani in:
http://lists.gnu.org/archive/html/emacs-devel/2017-05/msg00495.html

* src/emacs-module.c (MODULE_SETJMP_1): Use the local var
instead of leaving it unused, to pacify picky compilers.
(module_reset_handlerlist): Now takes a dummy pointer to a struct
handler *, instead of a dummy pointer to an int.  All uses changed.

* src/sysdep.c (system_process_attributes) [DARWIN_OS]:
Remove unused locals.

* src/xdisp.c (hscrolling_current_line_p): New function.
(init_iterator): If auto-hscrolling just the current line, don't
increment the iterator's first_visible_x and last_visible_x
variables.
(hscroll_window_tree): Recompute window's hscroll when moving
vertically to another screen line.
(redisplay_window): If we are hscrolling only the current line,
disable the optimizations that rely on the current matrix being
up-to-date.
(display_line): Accept an additional argument CURSOR_VPOS, the
vertical position of the current screen line which might need
hscrolling; all callers changed.  Compute first_visible_x and
last_visible_x specially when auto-hscrolling current line, by
repeating the calculation that is done in init_iterator in other
modes.
(syms_of_xdisp) <auto-hscroll-mode>: No longer boolean, it can now
accept a 3rd value 'current-line, to turn on the mode where
only the current line is hscrolled.

* etc/NEWS: Mention the new auto-hscroll-mode value.

* lisp/simple.el (line-move-finish): Fix last change.  This corrects a
regression in C-n and C-p when lines are truncated, introduced by the
change in 2017-05-10.

* lisp/textmodes/css-mode.el (css-completion-at-point, css-mode):
Expand docstrings.

Don't use the angle mode, use the angle units included
in the expression instead (Bug#23889).
* lisp/calc/calc-alg.el (calc-input-angle-units): New defun.
(math-simplify): Use it.
* lisp/calc/calc-forms.el (math-to-hms, math-from-hms):
Don't use calc-angle-mode if math-simplifying-units is non-nil.
* lisp/calc/calc-math.el (calcFunc-nroot, math-from-radians)
(math-to-radians-2, math-from-radians-2): Don't convert angle
to radians if math-simplifying-units is non-nil.
* test/lisp/calc/calc-tests.el (test-calc-23889): Add test.

This reverts commit 713e9222.
This commit causes Bug#25652.

Problem noted by Philipp Stephani in:
http://lists.gnu.org/archive/html/emacs-devel/2017-05/msg00391.html
* src/conf_post.h (ATTRIBUTE_MAY_ALIAS, DECLARE_POINTER_ALIAS):
New macros.
* src/process.c (conv_sockaddr_to_lisp, conv_lisp_to_sockaddr)
(connect_network_socket, network_interface_info)
(server_accept_connection): Use it when aliasing non-char objects.

Rename from smerge-refine-subst.  Allow the `beg's to be markers.
Add autoload cookie.
(smerge--refine-forward): Rename from smerge-refine-forward.
(smerge--refine-chopup-region): Rename from smerge-refine-chopup-region.
Assume that its `beg` arg is a marker.
(smerge--refine-highlight-change): Rename from
smerge-refine-highlight-change.  Remove `buf` arg.
(smerge-refine-subst): Redefine as an obsolete alias.

Problem reported by Jim Meyering in:
http://lists.gnu.org/archive/html/emacs-devel/2017-05/msg00246.html
* src/conf_post.h (vfork) [ADDRESS_SANITIZER]: Define to fork.
Unfortunately with the AddressSanitizer in Fedora 25 x86-64, the
vforked child messes up the parent’s shadow memory.  This is too
bad, as we’d rather have AddressSanitizer catch memory-access bugs
related to vfork.

* src/process.c (connect_network_socket): Use verify,
not eassert, so that any problems are caught at compile-time.
Avoid dodgy cast by using a local var of the correct type.

* src/composite.c (autocmp_chars) [!HAVE_WINDOW_SYSTEM]:
Avoid unused local.

* lisp/emacs-lisp/autoload.el (autoload-rubric):
Stop providing a feature unless explicitly requested.
(autoload-find-generated-file): Update autoload-rubric call.

* src/process.c (connect_network_socket) [HAVE_GETSOCKNAME]:
Remove redundant type-casting and variables.  Don't call
'getsockname' to find the port for AF_LOCAL sockets.
[AF_INET6]: Add an assertion to verify that the ports in the IPv4
and IPv6 structures are at the same offset and have the same size.

* src/editfns.c (wall_clock_tz): Remove; unused.

* src/emacs.c (close_output_streams) [ADDRESS_SANITIZER]:
Do not close stderr.

* src/process.c (server_accept_connection): Simplify and avoid
multiple calls and struct literals in the last case of a switch.
The old code ran afoul of GCC bug 80659, which caused an internal
compiler error.  Problem reported by Jim Meyering in:
http://lists.gnu.org/archive/html/emacs-devel/2017-05/msg00182.html
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80659

* src/regex.c (regex_compile): Swap labels, so that the
FALLTHROUGH immediately precedes the case label.

This incorporates:
2017-05-16 manywarnings: update for GCC 7
2017-05-15 sys_select: Avoid "was expanded before it was required"
* configure.ac (nw): Suppress GCC 7’s new -Wduplicated-branches and
-Wformat-overflow=2 options, due to too many false alarms.
* doc/misc/texinfo.tex, lib/strftime.c, m4/manywarnings.m4:
Copy from gnulib.
* m4/gnulib-comp.m4: Regenerate.
* src/coding.c (decode_coding_iso_2022):
Fix bug uncovered by -Wimplicit-fallthrough.
* src/conf_post.h (FALLTHROUGH): New macro.
Use it to mark all switch cases that fall through.
* src/editfns.c (styled_format): Use !, not ~, on bool.
* src/gtkutil.c (xg_check_special_colors):
When using sprintf, don’t trust Gtk to output colors in [0, 1] range.
(xg_update_scrollbar_pos): Avoid use of possibly-uninitialized bool;
this bug was actually caught by Clang.
* src/search.c (boyer_moore):
Tell GCC that CHAR_BASE, if nonzero, must be a non-ASCII character.
* src/xterm.c (x_draw_glyphless_glyph_string_foreground):
Tell GCC that glyph->u.glyphless.ch must be a character.

* lisp/net/tramp.el (tramp-file-name-for-operation):
Use `default-directory' where appropriate.
(tramp-file-name-handler): Do not autoload.
(tramp-autoload-file-name-handler): Reintroduce function.
(tramp-register-autoload-file-name-handlers): Use it.