Fix more misleading cl-case quoting in tests

* test/lisp/dnd-tests.el (x-begin-drag):
* test/lisp/so-long-tests/so-long-tests-helpers.el
(so-long-tests-assert-active, so-long-tests-assert-reverted): Remove
misleading quoting in cl-case clauses (bug#51368).

Make it easier to customize wallpaper command

* lisp/image/wallpaper.el
(wallpaper--default-commands): New defvar.
(wallpaper--find-command): Use above new defvar.
(wallpaper--find-command-arguments): New defun.
(wallpaper-command): Rename from 'wallpaper-commands' and change
type to string.  Use 'wallpaper--find-command' to set it.
(wallpaper-command-args): New defcustom.  Use
'wallpaper--find-command-arguments' to set it.
(wallpaper--set-wallpaper-command): New defun.  Use as :set property
for 'wallpaper-command'.
(wallpaper-set): Use above new defcustoms to set the wallpaper.
Suggested by Eli Zaretskii <eliz@gnu.org>.

Improve wallpaper.el docs for recent changes

* lisp/image/wallpaper.el: Fix documentation to better reflect that no
external command is needed on Haiku.
* etc/NEWS: Update entry on wallpaper.el.

Allow setting wallpaper from TTY

* lisp/image/wallpaper.el (wallpaper-set): Allow setting wallpaper
when 'display-graphic-p' is nil.
(wallpaper-default-width, wallpaper-default-height):
New variables.
(wallpaper--get-height-or-width): New helper function.

* lisp/image/wallpaper.el (wallpaper-commands): Add xwallpaper.

Support recent KDE Plasma in wallpaper.el

* lisp/image/wallpaper.el (wallpaper-commands): Support recent KDE
Plasma.
(wallpaper--check-command): New cl-defmethod.

Fix desktop environment check on Ubuntu

* lisp/image/wallpaper.el (xdg): Require.
(wallpaper--check-command): Use xdg-current-desktop instead of reading
XDG_CURRENT_DESKTOP directly.  This fixes things on e.g. Ubuntu, where
XDG_CURRENT_DESKTOP might contain a string like "ubuntu:GNOME".

; * etc/NEWS: Improve wording of 'xdg-state-home' entry.

Add new function xdg-current-desktop to xdg.el

* lisp/xdg.el (xdg-current-desktop): New function.
* test/lisp/xdg-tests.el (xdg-current-desktop): New test.

Improve messages in image-crop.el

* lisp/image/image-crop.el (image-crop)
(image-crop--crop-image-1): Improve messages and include the name
of the current operation.

Implement wallpaper.el support for Haiku

* lisp/image/wallpaper.el (haiku-set-wallpaper, wallpaper-set):
Use `haiku-set-wallpaper' on Haiku.
* lisp/term/haiku-win.el (haiku-write-node-attribute)
(haiku-send-message, haiku-set-wallpaper): New function.
* src/haiku_support.cc (be_write_node_message, be_send_message):
New functions.
* src/haiku_support.h: Update prototypes.
* src/haikuselect.c (haiku_message_to_lisp)
(haiku_lisp_to_message): Fix CSTR type handling to include NULL
byte.
(haiku_report_system_error, Fhaiku_write_node_attribute)
(Fhaiku_send_message): New functions.
(syms_of_haikuselect): Add defsubrs.

Support wbg in wallpaper.el (Bug#57781)

* lisp/image/wallpaper.el (wallpaper-commands): Add "wbg".
(wallpaper--check-command): New cl-defmethod for "wbg".

; Prefer string-join in image-dired

* lisp/image/image-dired-dired.el (subr-x): Require.
(image-dired-dired-display-properties): Prefer string-join.
* lisp/image/image-dired.el (subr-x): Require.
(image-dired-update-header-line): Prefer string-join.

Fix recently-added cl-macs tests

* test/lisp/emacs-lisp/cl-macs-tests.el (cl-case-error)
(cl-case-warning): Fix warning matches.

Make help-fns--generalized-variable more resilient

* lisp/help-fns.el (help-fns--generalized-variable): Don't bug out
when a key binding isn't a symbol.

Prefer defvar-keymap for repeat-map in outline.el

* lisp/outline.el (outline-navigation-repeat-map)
(outline-editing-repeat-map): Prefer defvar-keymap.

Port alignas definition to C23

* src/lisp.h (alignas): C23 is removing the __alignas_is_defined
macro, so do not rely on it. Instead, do not define alignas if C23
or later, or if C++11 or later.

; * etc/NEWS: Fix wording of 'image-crop' entry.

Fix wallpaper.el build warning

* lisp/image/wallpaper.el (require): Fix build warning.

Revert "Fix help--analyze-key problem when not called from menu"

This reverts commit 7e374b96635ce70f574fba351defc765e9a52da9.

This should not be needed -- perhaps it was triggered by
an ephemeral code change in my running Emacs.

Use wallpaper-set in thumbs.el

* lisp/thumbs.el (wallpaper): Require.
(thumbs-setroot-command): Make defcustom obsolete.
(thumbs-call-setroot-command): Make obsolete in favor of
wallpaper-set.
(thumbs-set-image-at-point-to-root-window, thumbs-set-root)
(thumbs-dired-setroot): Use wallpaper-set instead of
thumbs-call-setroot-command.
(thumbs-before-setroot-hook, thumbs-after-setroot-hook): Make
obsolete.

Add new command image-dired-set-wallpaper

* lisp/image/image-dired.el (wallpaper): Require.
(image-dired-set-wallpaper): New command.
(image-dired-thumbnail-mode-map): Bind above new command to "W".

Add new library wallpaper.el

* lisp/image/wallpaper.el: New file.

; image-dired: Delete unnecessary :group arg

* lisp/image/image-dired.el (image-dired-db-file): Delete unnecessary
:group arg.

Remove a nil cl-case case

* lisp/emacs-lisp/testcover.el (testcover-coverage-combine):
Remove the nil case, which will never match (bug#51368).

Fix some misleading quoting in cl-case

* lisp/progmodes/compile.el (compilation-auto-jump):
* lisp/image/image-crop.el (image-crop--crop-image-1):
(image-crop--crop-image-1):
* lisp/image/exif.el (exif--process-value):
* lisp/image-mode.el (image-mode--next-file):
* lisp/dnd.el (dnd-begin-text-drag):
(dnd-begin-file-drag):
(dnd-begin-drag-files): Fix misleading quoting in cl-case (bug#51368).

; * etc/NEWS: More detail about 'image-crop' and 'image-elide'.

Regenerated ldefs-boot.el

Have 'cl-case' warn about suspicious cases

* lisp/emacs-lisp/cl-macs.el (cl-case): Warn if the user passes a nil
key list (which would never match).  Warn about quoted symbols that
should probably be unquoted.

* test/lisp/emacs-lisp/cl-macs-tests.el (cl-case-warning): New unit
test (bug#51368).

Signal an error if a fallback cl-case is misplaced

* lisp/emacs-lisp/cl-macs.el (cl-case): Warn if the user passes a nil
key list (which would never match).  Warn about quoted symbols that
should probably be unquoted.

* test/lisp/emacs-lisp/cl-macs-tests.el (cl-case-warning): New unit
test (bug#51368).

Move imagep in image.c from the debugging section

* lisp/simple.el (imagep): Remove.
* src/image.c (Fimagep): Always define.

Fix help--analyze-key problem when not called from menu

* lisp/help.el (help--analyze-key): Don't bug out when not called
from the menu.

; * src/image.c (svg_load_image): Another minor cleanup.  (Bug#51104)

Add new commands 'image-crop' and 'image-elide'

* doc/lispref/display.texi (Showing Images): Document it.

* lisp/image.el (image-map): Bind commands.

* lisp/image/image-crop.el: New file (bug#51331).

Add new function imagep

* lisp/simple.el (imagep): New function.

; Add commentary to comp-tests.el

Sigh... why do people insist on removing useful comments and leave
their tricky code more obfuscated than it must be??
* test/src/comp-tests.el (comp-tests-type-spec-tests): Add a
comment explaining why the expressions are quoted.  (Bug#51104)

Fix whitespace-tests on macOS

* test/lisp/whitespace-tests.el (whitespace-tests--empty-bob):
(whitespace-tests--empty-eob): Use C-a/C-e instead of
<home>/<end> (bug#57763).

Merge branch 'master' of git.savannah.gnu.org:/srv/git/emacs

; * src/image.c (svg_load_image): Always free 'err' if non-NULL.

comp-tests.el: Enable compilation again

Rather than disable byte-compilation to circumvent bug#51104,
change the ELisp code so that `most-positive/negative-fixnum` does
not end up hardcoded in the `.elc` file.

* test/src/comp-tests.el (comp-tests-define-type-spec-test):
Don't quote the type expressions.
(comp-tests-type-spec-tests): Quote them here instead.

Fix last change in image.c

* src/image.c (svg_load_image): Don't call Lisp to remove trailing
whitespace from librsvg error messages, do it in C instead; this
reduces consing and is much cleaner.  Don't display empty error
reason if librsvg happens to return an empty message text.
(syms_of_image): Don't DEFSYM string-trim-right.  (Bug#57755)

Prefer defvar-keymap in several cases

* lisp/calc/calc-embed.el (calc-override-minor-modes-map):
* lisp/calc/calc-yank.el (calc-edit-mode-map):
* lisp/calc/calc.el (calc-trail-mode-map):
* lisp/cedet/semantic/mru-bookmark.el (semantic-mru-bookmark-mode-map):
* lisp/cedet/semantic/util-modes.el (semantic-highlight-edits-mode-map)
(semantic-show-unmatched-syntax-mode-map)
(semantic-show-parser-state-mode-map)
(semantic-stickyfunc-mode-map, semantic-highlight-func-mode-map):
* lisp/cedet/srecode/srt-mode.el (srecode-template-mode-map):
* lisp/gnus/gnus-art.el (gnus-prev-page-map, gnus-next-page-map):
* lisp/gnus/gnus-search.el (gnus-search-minibuffer-map):
* lisp/gnus/score-mode.el (gnus-score-mode-map):
* lisp/gnus/smime.el (smime-mode-map):
* lisp/indent.el (edit-tab-stops-map):
* lisp/isearch.el (minibuffer-local-isearch-map):
* lisp/printing.el (pr-interface-map):
* lisp/progmodes/prog-mode.el (prog-mode-map):
* lisp/progmodes/subword.el (subword-mode-map):
* lisp/reveal.el (reveal-mode-map):
* lisp/strokes.el (strokes-mode-map):
* lisp/textmodes/flyspell.el (flyspell-mouse-map):
* lisp/textmodes/less-css-mode.el (less-css-mode-map):
* lisp/textmodes/remember.el (remember-mode-map)
(remember-notes-mode-map):
* lisp/wid-browse.el (widget-browse-mode-map):
* lisp/wid-edit.el (widget-key-sequence-map): Prefer defvar-keymap in
some easy-to-convert cases.

Enable undo in eww buffers

* lisp/net/eww.el (eww-render): Enable undo after rendering.  This
allows using `undo' in text input boxes.
(eww-setup-buffer): Disable undo before rendering (bug#57750).

* lisp/net/shr.el (shr-image-fetched): Inhibit undo tracking.

Indirect Buffers manual improvement

* doc/emacs/buffers.texi (Indirect Buffers): There's no point in
mentioning both clone-indirect-buffer and
clone-indirect-buffer-other-window here since they do the pretty
much the same (bug#57753).

; * test/src/comp-tests.el: Explain the last change.

Avoid double svg error reporting and segfaults

* src/image.c (svg_load_image): Use g_error_free directly instead
of the helder g_clear_error (since we're only calling it with
non-nil values).
(svg_load_image): Avoid segfault and double reporting errors.
* test/manual/image-tests.el (image-tests-load-image/svg-too-big)
(image-tests-load-image/svg-invalid): Test it (bug#57755).

; Fix last change in test/manual/image-tests.el

* test/manual/image-tests.el (image-skip-unless):
(image-tests-image-metadata/gif): Fix last change.

Prefer defvar-keymap in pixel-scroll-precision-mode-map

* lisp/pixel-scroll.el (pixel-scroll-precision-mode-map): Prefer
defvar-keymap.

Prefer defvar-keymap in tab-line.el

* lisp/tab-line.el (tab-line-tab-map, tab-line-add-map)
(tab-line-tab-close-map, tab-line-left-map, tab-line-right-map):
Prefer defvar-keymap.

Prefer defvar-keymap in lisp/epa*.el

* lisp/epa-ks.el (epa-ks-search-mode-map):
* lisp/epa.el (epa-key-list-mode-map, epa-key-mode-map): Prefer
defvar-keymap.

Fix frames with explicit parent being unmapped after parent shuts down

* src/xterm.c (handle_one_xevent): Delete leftover _XEMBED_INFO
property after parent shuts down.

Merge from origin/emacs-28

86f0601392 ; * admin/notes/www: Fix typos.
2cdb9d03fd ; * admin/make-tarball.txt: Minor clarifications.

; Merge from origin/emacs-28

The following commit was skipped:

f771f122d2 ; Bump Emacs version past 28.2

Merge from origin/emacs-28

739b5d0e52 Update HISTORY for Emacs 28.2

; * admin/notes/www: Fix typos.

Fix comp-tests.el problem after reconfiguring

* test/src/comp-tests.el: Do not byte-compile, as the .elc
file would be machine-dependent (bug#51104).

Document the recently added branch commands (bug#50344)

* doc/emacs/maintaining.texi (VC Directory Commands): Change the
prefix key from "B" to "b".  Replace vc-create-tag with vc-create-branch,
and vc-retrieve-tag with vc-switch-branch.
(Switching Branches): Mention vc-switch-branch bound to 'C-x v b s'.
(Creating Branches): Mention vc-create-branch bound to 'C-x v b c'.

* lisp/vc/vc-dir.el (vc-dir-mode-map): In branch keymap 'b' rebind
"c" from vc-create-tag to vc-create-branch, and "s" from
vc-retrieve-tag to vc-switch-branch.

* lisp/vc/vc.el (vc-print-branch-log): Fix interactive spec.

For reading vc-read-revision in the interactive spec use the same 'backend'
and 'rootdir' as in the body of the same function.

'C-x v b' prefix key is used for branch commands to create/switch/print branch

* lisp/vc/vc.el (vc-create-branch): New command.
(vc-retrieve-tag): Add new optional arg 'branchp'.
(vc-switch-branch): New command (bug#50344).

* lisp/vc/vc-hooks.el (vc-prefix-map): Bind "b c" to vc-create-branch,
"b l" to vc-print-branch-log, "b s" to vc-switch-branch.  Remove obsolete
and suppressed "b" from vc-switch-backend.

* lisp/vc/vc-dir.el (vc-dir-mode-map): Rebind 'branch-map' from "B" to "b"
for consistency with 'vc-prefix-map'.

* lisp/vc/vc-git.el (vc-git-create-tag): For a new branch read
its start-point.  Ask a confirmation if modified files exist.

; * etc/NEWS: Fix typo and wording of recently added entry.

; etc/NEWS: Fix typo.

; etc/NEWS: Update for last change.

Add new C-x w prefix map

* window.el (window-prefix-map): New map.
(ctl-x-map): Unbind split-root-window-below and
split-root-window-right.  Bind window-prefix-map to C-x w.

Skip manual GIF metadata test on MS-Windows

* test/manual/image-tests.el
(image-skip-unless): Add new arg CONDITION.
(image-tests-image-metadata/gif): Skip test on MS-Windows when
using native image API.  (Bug#57691)

Don't overwrite error message in `x' in package.el

* lisp/emacs-lisp/package.el (package-menu--perform-transaction):
Return whether there were errors.
(package-menu-execute): Don't overwrite the error message(s) with
a success message (bug#51201).

Remove some XEmacs references in speedbar.el

* lisp/speedbar.el (speedbar-toggle-etags): Remove some references
to etags support being XEmacs specific (bug#51102).

Document :vert-only tool bar property

* doc/lispref/keymaps.texi (Tool Bar): Document what :vert-only
does (bug#51049).  This is not what it was intended to do -- but
what it intended to do didn't really make that much sense either,
so perhaps the prop should just be renamed :image-only?

Remove edebug props in edebug-remove-instrumentation

* lisp/emacs-lisp/edebug.el (edebug--strip-plist): New function
(bug#51026).
(edebug-remove-instrumentation): Use it to remove pros added while
running edebug.

Fix length issues in gnus-cloud-make-chunk

* lisp/gnus/gnus-cloud.el (gnus-cloud-make-chunk): Make buffer
unibyte (bug#50988).

; * admin/make-tarball.txt: Minor clarifications.

; Bump Emacs version past 28.2

* README:
* configure.ac:
* nt/README.W32:
* msdos/sed2v2.inp:
* etc/NEWS: Bump Emacs version to 28.2.50.

Consider key=val labels when renumbering

* lisp/textmodes/reftex-global.el (reftex-translate): Recognize
key=val labels given in the optional or mandatory argument of
environments (AUCTeX bug#57720).

* test/lisp/textmodes/reftex-tests.el
(reftex-renumber-simple-labels): New Test.

Fix Tramp test

* lisp/net/tramp-compat.el (tramp-compat-rx):
Add `tramp-autoload' function property.

Fix focus restoration upon x_mouse_leave again

* src/xterm.c (x_mouse_leave): Call xi_handle_focus_change after
changing the implicit focus.

Update HISTORY for Emacs 28.2

* etc/HISTORY: Update for the Emacs 28.2 release.

* lisp/progmodes/xref.el: Bump the version.

Restrict replace-*-in-region to the bounds defined by caller

* lisp/subr.el (replace-string-in-region, replace-regexp-in-region):
Narrow to region before iterating over matches, instead of giving a
bound to the search functions.
* test/lisp/subr-tests.el (test-replace-string-in-region): Add
regression tests (bug#57733).

Disable Tramp cache for relative file names

* lisp/net/tramp.el (tramp-file-name-unify):
Return `tramp-cache-undefined' if LOCALNAME is a relative file name.

* lisp/net/tramp-cache.el (tramp-get-file-property)
(tramp-set-file-property, tramp-file-property-p)
(tramp-flush-file-property, tramp-flush-file-upper-properties)
(tramp-flush-file-properties): Handle KEY being
`tramp-cache-undefined'.
(tramp-flush-file-function): Revert last change.

whitespace: Redo BoB/EoB empty line highlighting

* lisp/whitespace.el (whitespace--empty-at-bob-matcher,
whitespace--empty-at-eob-matcher, whitespace--update-bob-eob,
whitespace-color-off, whitespace-color-on,
whitespace-empty-at-bob-regexp, whitespace-empty-at-eob-regexp,
whitespace-looking-back, whitespace-post-command-hook): Redo the
`empty' line highlighting logic to ensure that a buffer change causes
all affected `empty' lines to become (un)highlighted (bug#37467).
Also, for improved UX, don't highlight BoB empty lines at or below
point (not just when point is at 1), or EoB empty lines at or above
point (not just when point is `eobp').
(whitespace-bob-marker, whitespace-eob-marker): Clarify documentation.
* test/lisp/whitespace-tests.el (whitespace--with-test-buffer,
whitespace--fu, whitespace-tests--empty-bob,
whitespace-tests--empty-eob): Add tests.

whitespace: Include empty final line in BoB empty match

* lisp/whitespace.el (whitespace-empty-at-bob-regexp): Include any
last line trailing whitespace in the BoB empty line match to ensure
that those characters get highlighted.

whitespace: Reset `whitespace-buffer-changed' when refontifying

* lisp/whitespace.el (whitespace-post-command-hook): Add missing reset
of `whitespace-buffer-changed' back to nil between commands.

; whitespace: Use `defvar-local' for buffer-local vars

; whitespace: Delete unused `whitespace-font-lock-refontify' var

ert-x: New `ert-with-test-buffer-selected' convenience macro

* lisp/emacs-lisp/ert-x.el (ert-with-test-buffer-selected): New
convenience macro that extends `ert-with-test-buffer' by displaying
the test buffer in a temporary selected window.  This makes it easier
to simulate user input in the body via `execute-kbd-macro'.
* test/lisp/emacs-lisp/ert-x-tests.el
(ert-test-test-buffer-selected/*): Add tests.

Revert "Add new command 'toggle-theme'"

This reverts commit f31b9d86a67f1b3fd70339f277dff52478890351.

Revert "Add new user option 'custom-ensure-single-theme'"

This reverts commit b4dbf7184cd68ecd8d1a27fbc1407be0eae7e64c.

; Use US spelling docstring

* lisp/vc/diff-mode.el (diff-add-log-use-relative-names): Update docstring.

Add new user option 'custom-ensure-single-theme'

* etc/NEWS: Mention it.
* lisp/custom.el (custom-ensure-single-active-theme): Add it.
(load-theme): Use it.

Add new command 'toggle-theme'

* doc/emacs/custom.texi (Custom Themes): Mention it.
* etc/themes/leuven-dark-theme.el (leuven-dark): Add dual theme.
* etc/themes/leuven-theme.el (leuven): Add dual theme.
* etc/themes/tango-dark-theme.el (tango-dark): Add dual theme.
* etc/themes/tango-theme.el (tango): Add dual theme.
* etc/themes/tsdh-dark-theme.el (tsdh-dark): Add dual theme.
* etc/themes/tsdh-light-theme.el (tsdh-light): Add dual theme.
* lisp/cus-theme.el (describe-theme-1): Say if a theme has a dual.
* lisp/custom.el (toggle-theme): Add new command.

Improve some shell highlight doc strings

* lisp/shell.el (shell-highlight-undef-mode-restart): Rename function.
* lisp/shell.el (shell-comint-fl-enable):
(shell--highlight-undef-indirect)
* lisp/ielm.el (ielm-comint-fl-enable):
* lisp/comint.el: (comint--fl-fontify-region): Improve doc strings.

Make it easier to clear the Motif drag window for debugging

* src/xterm.c (xm_get_drag_window_1): Add comment explaining
side effect of x_special_window_exists_p.
(handle_one_xevent): Clear Motif drag window upon DestroyNotify.
In addition to debugging, it also reduces syncs necessary to
communicate via the Motif protocol after a defective/old client
sets the drag window without setting the disconnect mode.

* lisp/vc/vc.el (vc-diff-patch-string): Fix arg in revert-buffer-function.

* lisp/vc/vc.el (vc-deduce-backend): Handle eshell-mode.

Fix project-remember-projects-under when recursing

* lisp/progmodes/project.el (project-remember-projects-under):
Actually recurse into directories (bug#57714).

Copyright-paperwork-exempt: yes

Ensure, that Tramp cache works over absolute file names

* lisp/net/tramp.el (tramp-skeleton-directory-files)
(tramp-skeleton-directory-files-and-attributes)
(tramp-skeleton-set-file-modes-times-uid-gid)
(tramp-handle-add-name-to-file, tramp-handle-file-exists-p)
(tramp-handle-file-readable-p, tramp-handle-file-writable-p):
* lisp/net/tramp-adb.el (tramp-adb-handle-file-executable-p)
(tramp-adb-handle-file-exists-p)
(tramp-adb-handle-file-readable-p)
(tramp-adb-handle-file-writable-p)
* lisp/net/tramp-gvfs.el (tramp-gvfs-info, tramp-gvfs-handle-delete-file)
(tramp-gvfs-get-directory-attributes)
(tramp-gvfs-get-root-attributes)
(tramp-gvfs-handle-file-executable-p):
* lisp/net/tramp-sh.el (tramp-sh-handle-make-symbolic-link)
(tramp-sh-handle-file-exists-p)
(tramp-sh-handle-set-visited-file-modtime)
(tramp-sh-handle-file-selinux-context)
(tramp-sh-handle-set-file-selinux-context)
(tramp-sh-handle-file-acl, tramp-sh-handle-file-executable-p)
(tramp-sh-handle-file-readable-p)
(tramp-sh-handle-file-directory-p)
(tramp-sh-handle-file-writable-p)
(tramp-sh-handle-file-ownership-preserved-p)
(tramp-sh-handle-add-name-to-file)
(tramp-sh-handle-copy-directory, tramp-sh-handle-delete-file)
(tramp-sh-handle-dired-compress-file):
* lisp/net/tramp-sudoedit.el (tramp-sudoedit-handle-add-name-to-file)
(tramp-sudoedit-handle-delete-file)
(tramp-sudoedit-handle-file-acl)
(tramp-sudoedit-handle-file-executable-p)
(tramp-sudoedit-handle-file-exists-p)
(tramp-sudoedit-handle-file-readable-p)
(tramp-sudoedit-handle-file-selinux-context)
(tramp-sudoedit-handle-file-writable-p)
(tramp-sudoedit-handle-make-symbolic-link)
(tramp-sudoedit-handle-set-file-selinux-context):
Use `expand-file-name'.  (Bug#57572)

* lisp/net/tramp-cache.el (tramp-flush-file-function):
Expand `buffer-file-name'.  (Bug#57676)

* lisp/net/tramp.el (tramp-file-name-unify): Extend error message.

* lisp/net/tramp-sh.el (tramp-sh-handle-make-symbolic-link):
* lisp/net/tramp-smb.el (tramp-smb-handle-make-symbolic-link):
* lisp/net/tramp-sudoedit.el (tramp-sudoedit-handle-make-symbolic-link):
Do not check remoteness of TARGET anymore.

Fix compliance with the XDND specification when dropping on a proxy

* src/xterm.c (x_dnd_send_enter, x_dnd_send_position)
(x_dnd_send_leave, x_dnd_send_drop, x_dnd_do_drop): New
parameter `toplevel'.  Use it as the window in sent client
messages.
(x_dnd_cancel_dnd_early, x_dnd_cleanup_drag_and_drop)
(x_dnd_process_quit, x_dnd_update_state, handle_one_xevent)
(x_connection_closed): Give the right toplevel to the client
message sending functions.

; * lisp/minibuffer.el (format-prompt): Doc fix.

Make wdired match dired with symlink permissions

* lisp/wdired.el (wdired-do-perm-changes): Do not follow symlinks,
to be consistent with plain dired (bug#50189).

Make `format-prompt' use `substitute-command-keys'

* doc/lispref/minibuf.texi (Text from Minibuffer): Mention it.
* lisp/minibuffer.el (format-prompt): Run through
`substitute-command-keys' (bug#51040).

Fix diff-mode.el compilation warnings

* lisp/vc/diff-mode.el (diff-auto-refine-mode): Suppress
byte-compile warnings.