Run 'TZ=UTC0 admin/update-copyright $(git ls-files)'.

Run admin/update-copyright.

* lisp/rect.el (string-rectangle):
* etc/NEWS.25: Mention `rectangle-preview'.

Most of this change is to boilerplate commentary such as license URLs.
This change was prompted by ftp://ftp.gnu.org's going-away party,
planned for November.  Change these FTP URLs to https://ftp.gnu.org
instead.  Make similar changes for URLs to other organizations moving
away from FTP.  Also, change HTTP to HTTPS for URLs to gnu.org and
fsf.org when this works, as this will further help defend against
man-in-the-middle attacks (for this part I omitted the MS-DOS and
MS-Windows sources and the test tarballs to keep the workload down).
HTTPS is not fully working to lists.gnu.org so I left those URLs alone
for now.

* etc/NEWS: Remove stray entry.
* etc/NEWS.25: Copy from Emacs emacs-25 etc/NEWS.
* lisp/textmodes/rst.el (rst-package-emacs-version-alist):
Make it nondecreasing.

Run admin/update-copyright in the master branch.  This fixes files
that were not already fixed in the emacs-25 branch before it was
merged here.

* README:
* configure.ac:
* etc/NEWS:
* etc/refcards/ru-refcard.tex:
* msdos/sed2v2.inp:
* src/msdos.c: Increment Emacs version to 26.0.50.
* etc/NEWS.25: New file, copied from etc/NEWS with post-25.1 stuff
moved to etc/NEWS.

* src/eval.c (syms_of_eval) <debugger-stack-frame-as-list>: New
variable.
* lisp/cus-start.el (standard): Add debugger-stack-frame-as-list.
* lisp/emacs-lisp/debug.el (debugger-setup-buffer): Adjust
backtrace processing for the value of debugger-stack-frame-as-list.
* lisp/emacs-lisp/edebug.el (edebug-backtrace): Adjust backtrace
processing for the value of debugger-stack-frame-as-list.
* doc/lispref/debugging.texi (Internals of Debugger): Document
debugger-stack-frame-as-list.
* etc/NEWS: Mention 'debugger-stack-frame-as-list'.

* lisp/textmodes/css-mode.el (css-class-list-function): New variable
holding the function to call for retrieving completions of class
names.
(css-id-list-function): New variable holding the function to call for
retrieving completions of IDs.
(css--foreign-completions): New function for retrieving completions
from other buffers.
(css--complete-selector): Support completing HTML class names and IDs
from other buffers in addition to completing HTML tags.

* lisp/textmodes/sgml-mode.el (html--buffer-classes-cache): New
variable holding a cache for `html-current-buffer-classes'.
(html--buffer-ids-cache): New variable holding a cache for
`html-current-buffer-ids'.
(html-current-buffer-classes): New function returning a list of class
names used in the current buffer.
(html-current-buffer-ids): New function returning a list of IDs used
in the current buffer.
(html-mode): Set `css-class-list-function' and `css-id-list-function'
to `html-current-buffer-classes' and `html-current-buffer-ids'
respectively.

Problem reported by Glenn Morris (Bug#19889).
* doc/emacs/display.texi (Standard Faces):
* doc/lispref/display.texi (Basic Faces):
* etc/NEWS: Mention fixed-pitch-serif.
* lisp/faces.el (face-font-family-alternatives):
New family alias Monospace Serif.
(fixed-pitch-serif): New face, which uses the new family.
* lisp/info.el (Info-quoted):
* lisp/textmodes/tex-mode.el (tex-verbatim): Use the new face.
* test/lisp/legacy/font-parse-tests.el (font-parse-tests--data):
Add test case for Monospace Serif.

This is backport from master
(cherry picked from commit 36906806)

* lisp/emacs-lisp/find-func.el (find-library):
* lisp/help-mode.el (help-function-def, help-variable-def):
Run `find-function-after-hook' inside the help-function of the
buttons (bug#22583).
* etc/NEWS: Mention the change.

This is a backport from master.
(cherry picked from commit f069d854)

* README:
* configure.ac:
* etc/NEWS:
* msdos/sed2v2.inp: Bump the version to 25.1.50.

* README:
* configure.ac:
* etc/NEWS:
* msdos/sed2v2.inp: Increment the Emacs version to 25.2.50.

* lisp/files.el (convert-standard-filename): Doc fix.  (Bug#24387)

* etc/NEWS: Suggest a way for mirroring slashes where previously
'convert-standard-filename' was used.

* src/w32proc.c (sys_signal): Don't reject SIGINT, as it is
supported by MS runtime.
* src/term.c (DEV_TTY): Move from here ...
* src/conf_post.h (DEV_TTY): ... to here.  Separate definitions
for WINDOWSNT and for the rest.
* src/keyboard.c (handle_interrupt_signal): Use DEV_TTY instead of
a literal "/dev/tty".

* etc/NEWS: Mention the behavior change.

* lisp/userlock.el (userlock--check-content-unchanged)
(userlock--ask-user-about-supersession-threat): New functions.
* src/filelock.c (lock_file): Use them to avoid spurious prompting.
* doc/lispref/buffers.texi (Modification Time): Update doc of
ask-user-about-supersession-threat.

* lisp/textmodes/tex-mode.el (tex-insert-quote): When in a comment,
  default to inserting a normal double quote (") instead of TeX-style
  open (``) or close ('') quote marks.

* etc/NEWS (TeX mode): Note the change.

* test/lisp/electric-tests.el (autowrapping-7): Adjust accordingly.

See this thread for discussion:

  https://lists.gnu.org/archive/html/emacs-devel/2016-08/msg00611.html
  From: Karl Fogel <kfogel {_AT_} red-bean.com>
  To: Emacs Development <emacs-devel {_AT_} gnu.org>
  Subject: [PATCH] Have LaTeX mode use normal double quotes in comments.
  Date: Mon, 29 Aug 2016 14:44:12 -0500
  Message-ID: <87twe3icmr.fsf@red-bean.com>

Suggested by Clément Pit--Claudel in:
http://lists.gnu.org/archive/html/emacs-devel/2016-08/msg00487.html
* lisp/simple.el (shell-command-dont-erase-buffer):
(shell-command--save-pos-or-erase):
(shell-command--set-point-after-cmd):
(shell-command-on-region):
* doc/emacs/misc.texi (shell-command-dont-erase-buffer):
* etc/NEWS (Changes in Emacs 25.2):
Rename from shell-command-not-erase-buffer.

Suggested by Stefan Monnier in Bug#22679.
* lisp/subr.el (call-shell-region): New defun; execute a command
in an inferior shell with the buffer region as input.
* lisp/simple.el (shell-command-on-region): Use it.
* lisp/gnus/message.el (message-do-fcc): Idem.
* doc/lispref/processes.texi: Document call-shell-region in the manual.
;* etc/NEWS: Add entry for this new function.

* lisp/files.el (file-attribute-collect):
Return a sublist of the attributes returned by 'file-attributes'.
Suggested by Ted Zlatanov in:

http://lists.gnu.org/archive/html/emacs-devel/2016-07/msg01195.html
; * etc/NEWS: Mention this defun in NEWS.

The change was made to fix bug#20154, and came up again in bug#24239.

* etc/NEWS: Likewise.

* etc/NEWS: Describe new handling of margins when splitting or
resizing windows (Bug#24193).

* lisp/simple.el (shell-command-not-erase-buffer): New option to allow
not erasing the output buffer between shell commands.  Defaults to nil.
(shell-command-on-region): Use it.
(shell-command--save-pos-or-erase): New defun; store a buffer position
if 'shell-command-not-erase-buffer' is non-nil; otherwise
erase the output buffer of the shell command.
(shell-command, shell-command-on-region): Use it.
(shell-command--set-point-after-cmd): New defun;
if 'shell-command-not-erase-buffer' is non-nil, set point
in the output buffer to the position in 'shell-command-saved-pos'.
(shell-command-sentinel, shell-command-on-region): Use it.
* doc/emacs/misc.texi (shell-command-not-erase-buffer):
Document this feature in the manual.
; * etc/NEWS: Add entry for this new feature.
See discussion on:
http://lists.gnu.org/archive/html/emacs-devel/2016-07/msg00610.html

* doc/misc/tramp.texi (Remote processes): Explain setting $ENV.

* etc/NEWS: Explain the "ENV" environment variable in
`tramp-remote-process-environment'.

* lisp/net/tramp-sh.el (tramp-remote-process-environment): Add "ENV=''".
(tramp-open-shell): Read $ENV value from
`tramp-remote-process-environment'.
(tramp-open-connection-setup-interactive-shell): Set values in
proper order.

* doc/lispref/files.texi (Unique File Names):
Introduce `make-nearby-temp-file' and `temporary-file-directory'.
(Magic File Names): Mention `make-nearby-temp-file' and
`temporary-file-directory'.

* etc/NEWS (provided): Mention `make-nearby-temp-file' and
`temporary-file-directory'.

* lisp/files.el (mounted-file-systems): New defcustom.
(temporary-file-directory, make-nearby-temp-file): New defuns.
(normal-backup-enable-predicate): Fix docstring.

* 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-sh.el (tramp-sh-file-name-handler-alist):
* lisp/net/tramp-smb.el (tramp-smb-file-name-handler-alist):
<make-nearby-temp-file, temporary-file-directory>: Add handler.

* lisp/net/tramp.el (tramp-file-name-for-operation):
Add `make-nearby-temp-file' and `temporary-file-directory'.
(tramp-get-remote-tmpdir): Remove compatibility code.
(tramp-handle-temporary-file-directory)
(tramp-handle-make-nearby-temp-file): New defuns.

* lisp/org/ob-core.el (org-babel-local-file-name):
* lisp/progmodes/gud.el (gud-common-init):
* lisp/vc/vc-hooks.el (vc-user-login-name): Use `file-remote-p'.

* lisp/vc/vc-git.el (vc-git-checkin): Handle remote log message.

* test/lisp/net/tramp-tests.el (tramp-test06-directory-file-name):
Check `tramp--test-enabled'.
(tramp-test18-file-attributes): Add tests for
`file-ownership-preserved-p'.
(tramp-test27-start-file-process, tramp-test28-shell-command):
Reduce timeouts in `accept-process-output'.
(tramp-test--shell-command-to-string-asynchronously): Add timeout.
(tramp-test29-environment-variables): Remove additional sleep calls.
(tramp-test32-make-nearby-temp-file): New test.
(tramp--test-special-characters, tramp--test-utf8): Adapt docstring.
(tramp-test33-special-characters)
(tramp-test33-special-characters-with-stat)
(tramp-test33-special-characters-with-perl)
(tramp-test33-special-characters-with-ls, tramp-test34-utf8)
(tramp-test34-utf8-with-stat, tramp-test34-utf8-with-perl)
(tramp-test34-utf8-with-ls)
(tramp-test35-asynchronous-requests)
(tramp-test36-recursive-load, tramp-test37-unload): Rename.
(tramp--test-ftp-p): Simplify check.
(tramp--test-sh-p): New defun.
(tramp-test20-file-modes, tramp-test22-file-times)
(tramp-test26-process-file, tramp-test27-start-file-process)
(tramp-test28-shell-command)
(tramp-test29-environment-variables)
(tramp-test30-vc-registered)
(tramp-test33-special-characters-with-stat)
(tramp-test33-special-characters-with-perl)
(tramp-test33-special-characters-with-ls)
(tramp-test34-utf8-with-stat, tramp-test34-utf8-with-perl)
(tramp-test34-utf8-with-ls)
(tramp-test35-asynchronous-requests): Use it.

* configure.ac, etc/NEWS: Require GnuTLS 2.12.2 or later,
instead of merely 2.6.6 or later (Bug#23982#20).
* src/gnutls.c (init_gnutls_functions, emacs_gnutls_handshake)
[WINDOWSNT]: Don’t bother with gnutls_check_version or
gnutls_transport_set_lowat, as they are no longer needed now that
we require gnutls 2.12.2 or later.

* configure.ac: Report an error if the gnutls library is missing,
unless --with-gnutls=no is specified.

* etc/NEWS: Warn about known problems in the Cairo build.
(Bug#23925)

* lisp/emulation/viper-cmd.el (viper-adjust-undo): Use it.
(viper-set-complex-command-for-undo): Save current state with
prepare-change-group.
* lisp/emulation/viper-init.el (viper-undo-needs-adjustment)
(viper-buffer-undo-list-mark): Remove.

This reverts commit 5811404f.

It doesn't have the consensus, as evidenced by
http://lists.gnu.org/archive/html/emacs-devel/2016-06/msg00138.html

* dired.el (dired-always-read-filesystem): Add new option.
(dired-mark-files-containing-regexp): Use it (Bug#22694).
* doc/emacs/dired.texi: Mention it in the manual.
* test/lisp/dired-tests.el (dired-test-bug22694): Add test.
;* etc/NEWS: Add entry for this change.