unload-feature: Correct doc string to match info manual and reality

'unload-feature' doesn't try to "undo any additions the library has
made" to hooks, it tries to remove functions defined by the library
from hooks, no matter how they got there.

* lisp/loadhist.el (unload-feature): Correct the doc string.
* doc/lispref/loading.texi (Unloading): Clarify, fix typo.

unload-feature: Handle local hooks (bug#5293)

Buffer-local hooks were introduced in

1994-09-30T20:47:13+00:00!rms@gnu.org
0e4d378b32 (add-hook): Initialize default value and local value.

but 'unload-feature' has not been updated to handle them.

* lisp/loadhist.el (unload-feature): Handle local hooks (bug#5293).

unload-feature: Improve logic (don't repeat computation)

* lisp/loadhist.el (unload-feature): Don't do the same computation twice.

Convert artist.el to lexical binding

* lisp/textmodes/artist.el (artist-system, (artist-flood-fill):
Remove binding of the obsolete variables binary-process-input,
binary-process-output and input-queue.
(artist-down-mouse-1): Fix mistyped 'echo-keystrokes'; bind it to 0.
(artist-fill-rect, artist-fill-square, artist-pen-set-arrow-points)
(artist-spray-clear-circle, artist-spray-set-radius)
(artist-draw-ellipse-with-0-height, artist-fill-ellipse)
(artist-ff-is-topmost-line, artist-ff-is-bottommost-line)
(artist-set-arrow-points-for-2points, artist-key-undraw-continously)
(artist-key-undraw-poly, artist-key-undraw-1point)
(artist-key-undraw-2points, artist-key-do-continously-1point)
(artist-key-set-point-1point, artist-shift-has-changed)
(artist-mouse-draw-continously, artist-mouse-draw-1point)
(artist-submit-bug-report): Suppress warnings about unused parameters
which are there for function signature commonality.  Remove unused
variables.

; * lisp/emacs-lisp/bindat.el (bindat-unpack): Fix typo.

Tweak two time.el tests

* test/lisp/time-tests.el (time-tests-display-time-update--load)
(time-tests-display-time-update): Tweak tests.

* lisp/time.el: Use lexical-binding.

Add tests for time.el

* lisp/time.el (display-time-update--load)
(display-time-update--mail): Extract from...
(display-time-update): ...here.
* test/lisp/time-tests.el: New file.

Use lexical-binding in bindat.el

* lisp/emacs-lisp/bindat.el: Use lexical-binding.
(bindat-raw, bindat-idx, bindat-unpack, bindat-pack): Adjust for
lexical-binding.
(bindat--unpack-group, bindat--length-group): Fix byte-compiler
warning about unused variables last and vlen.
(bindat--unpack-group, bindat--length-group, bindat--pack-group)
(bindat-format-vector): Quote function symbols as such.

Remove some compat code from uudecode.el and binhex.el

* lisp/mail/uudecode.el (uudecode-char-int): Make obsolete.
(uudecode-decode-region-internal): Adjust callers.
* lisp/mail/binhex.el (binhex-char-int): Make obsolete.
(binhex-string-big-endian, binhex-string-little-endian)
(binhex-header): Adjust callers.

Declare old compat aliases in tcl.el obsolete

* lisp/progmodes/tcl.el (tcl-uncomment-region)
(tcl-indent-for-comment, add-log-tcl-defun, indent-tcl-exp)
(calculate-tcl-indent, tcl-beginning-of-defun, tcl-end-of-defun)
(tcl-mark-defun, tcl-mark): Make obsolete.

Add some top level domains

* lisp/mail/mail-extr.el (mail-extr-all-top-level-domains): Add
some geographic domains.

Revert "Add emoji to etc/HELLO"

This reverts commit a1fcdeec25be87e8f97ac5c14e6fbf6a4d1eb2d4.

There was already an emoji in there.

* test/lisp/vc/vc-bzr-tests.el: Use lexical-binding.

Use lexical-binding in files-x-tests.el

* test/lisp/files-x-tests.el: Use lexical-binding.
(remote-null-device): Declare.

Use lexical-binding in iso-ascii.el

* lisp/international/iso-ascii.el: Use lexical-binding.  Remove
redundant :group args.

Use lexical-binding in hfy-cmap.el and add tests

* lisp/hfy-cmap.el: Use lexical-binding.
(hfy-cmap--parse-buffer): Extract from...
(htmlfontify-load-rgb-file): ...here.

* test/lisp/hfy-cmap-resources/rgb.txt:
* test/lisp/hfy-cmap-tests.el: New files.

Add emoji to etc/HELLO

* etc/HELLO: Keep Javanese System.out.println("");

* lisp/outline.el: Use lexical-binding

Remove redundant `group` arguments.
(outline-level): Move before first use.
(outline-mode): Use `setq-local`.
(outline-isearch-open-invisible-function): Give it a non-nil default.

; Fix last change to idlw-complete-structtag.el

Use lexical-binding in m4-mode.el

* lisp/progmodes/m4-mode.el: Use lexical-binding.  Remove redundant
:group args.
* lisp/progmodes/m4-mode.el (m4-m4-buffer, m4-m4-region): Quote
function symbols as such.

Make more load-hooks obsolete (Bug#21563)

* lisp/progmodes/dcl-mode.el (dcl-mode):
* lisp/progmodes/idlw-complete-structtag.el: Recommend
with-eval-after-load instead of load-hooks.
* lisp/calc/calc-ext.el (calc-ext-load-hook):
* lisp/emacs-lisp/bytecomp.el (bytecomp-load-hook):
* lisp/emacs-lisp/cl-extra.el (cl-extra-load-hook):
* lisp/emacs-lisp/cl-macs.el (cl-macs-load-hook):
* lisp/emacs-lisp/cl-seq.el (cl-seq-load-hook):
* lisp/gnus/message.el (message-load-hook):
* lisp/gnus/nnheader.el (nnheader-load-hook):
* lisp/gnus/nnmail.el (nnmail-load-hook):
* lisp/progmodes/dcl-mode.el (dcl-mode-load-hook):
* lisp/textmodes/tex-mode.el (tex-mode-load-hook):
* lisp/whitespace.el (whitespace-load-hook): Obsolete for
with-eval-after-load.  Note that these variables are never declared,
but the byte-compiler will still warn about them if used.

byte-compile-file: Make optional LOAD argument obsolete

* lisp/emacs-lisp/bytecomp.el (byte-compile-file): Declare optional
LOAD argument obsolete.  Adjust callers.  (Bug#38072)
(byte-recompile-file): Declare optional LOAD argument obsolete.
* doc/lispref/compile.texi (Compilation Functions): Update
documentation to reflect above obsoletion.
* etc/NEWS: Announce above obsoletion.

Simplify regexp in last change to woman.el

* lisp/woman.el (woman-decode-region): Use simpler character
alternative instead of alternation.

Simplify syntax of shortdoc face specs

* lisp/emacs-lisp/shortdoc.el: Remove unused dependency.
(shortdoc-section, shortdoc-example): Use newer (DISPLAY . PLIST)
face spec syntax.

Tweak test data for signed package installation

* test/lisp/emacs-lisp/package-resources/signed/signed-bad-1.0.el:
* test/lisp/emacs-lisp/package-resources/signed/signed-good-1.0.el:
Use lexical-binding.
* test/lisp/emacs-lisp/package-resources/signed/update-signatures.sh:
New file.
* test/lisp/emacs-lisp/package-resources/key.pub:
* test/lisp/emacs-lisp/package-resources/key.sec: Add new key.
* test/lisp/emacs-lisp/package-resources/signed/signed-good-1.0.el.sig:
* test/lisp/emacs-lisp/package-resources/signed/archive-contents.sig:
Update signatures using new key.

* lisp/textmodes/picture.el: Use lexical binding.

Avoid assertion violations in malformed Unicode escapes

* src/lread.c (read_escape): Produce better diagnostic for
malformed \u Unicode escapes, while avoiding assertion violation
when READCHAR returns -1 because the input is exhausted.
(Bug#44084)

* lisp/language/utf-8-lang.el: Use lexical-binding.

; * etc/tutorials/TUTORIAL.fr: Fix typo.

Tweak the documentation for define-obsolete-variable-alias

* doc/lispref/variables.texi (Variable Aliases): Actually describe
the macro parameters (bug#44088).

* lisp/emacs-lisp/byte-run.el (define-obsolete-variable-alias):
Ditto (bug#44088).

Fix some mpc.el updating quirks

* lisp/mpc.el (mpc-songs-jump-to): Update the status buffer.

* lisp/mpc.el (mpc-stop): M-x mpc-stop clears playlist queue. So
updating *MPC-Songs* buffer is useful.

* lisp/mpc.el (mpc-cmd-delete): I noticed M-x mpc-playlist-delete
always messages “Deleted 1 songs” even if playlist queue has more
than one songs.  This is because mpc-cmd-delete’s sort modifies
songs-poss by side effect.  Using copy-sequence fixes this (bug#44093).
* lisp/mpc.el (mpc-cmd-move): Ditto.

Man highlighting: Don't occasionally bold entire sections.

* lisp/ansi-color.el (ansi-color-apply-on-region): Always save a
restart position in ansi-color-context-region if the region ends with
highlighting active.

Preserve all `eval' elements from both .dir-locals files

* lisp/files.el (dir-locals-read-from-dir): Preserve all `eval'
elements from both .dir-locals files (bug#44066).

* lisp/image-file.el: Use lexical-binding.

Make a bookmark test more robust

* test/lisp/bookmark-tests.el (bookmark-tests-insert-annotation):
Make test more robust by not being timing dependent.

; Fix last change in modus-themes.texi

* doc/misc/modus-themes.texi (How do the themes look like): Update
xref with new spelling.

Add command package-menu-filter-upgradable

* lisp/emacs-lisp/package.el (package-menu-filter-upgradable):
New command.  (Bug#41436)
(package-menu-mode-map): Bind the new command.
* doc/emacs/package.texi (Package Menu): Document the new command.

* lisp/progmodes/python.el: Bump version to release the f-string support

* lisp/mail/rfc2231.el (rfc2231-decode-encoded-string): Fix match data error

Get (match-string 3 string) earlier, in case `mm-charset-to-coding-system`
clobbers the match data.
Also, check that `string-match` succeeded before using its match data.

Fix documentation of the Modus Themes (Bug#43944)

* doc/misc/modus-themes.texi (Installation): Remove reference to MELPA.
(Top)
(Install from the archives, GNU Guix)
(Load at a given time or at sunset/sunrise)
(Configure options prior to loading, Command prompts)
(Headings' font, Will NOT be supported): Fix spelling, wording,
markup.
(Acknowledgements): Spell contributor's surname correctly.

Make auto-revert-mode tests run faster

* test/lisp/autorevert-tests.el (auto-revert--timeout): Make into
defun and shorten timeout by a factor 10.
(auto-revert--wait-for-revert): Cut timeouts in half.
(with-auto-revert-test): New macro to set timeout to 0.1.
(auto-revert-tests--write-file): New defun.
(auto-revert-test00-auto-revert-mode)
(auto-revert-test01-auto-revert-several-files)
(auto-revert-test02-auto-revert-deleted-file)
(auto-revert-test03-auto-revert-tail-mode)
(auto-revert-test04-auto-revert-mode-dired)
(auto-revert-test05-global-notify)
(auto-revert-test06-write-file): Adapt test to run faster.  Remove
:expensive-test marks.

This was discussed in:
https://lists.gnu.org/r/emacs-devel/2020-10/msg01233.html

Further clarification of directory-files* doc

* doc/lispref/files.texi (Contents of Directories):
Precise description of MATCH-REGEXP of directory-files.  Add
directory-files-no-dot-files-regexp.

* lisp/files.el (directory-files-no-dot-files-regexp): Revert last fix.

* src/dired.c (Fdirectory_files)
(Fdirectory_files_and_attributes): Fix wording in docstring.

Keep track of matching rules in compilation-mode

When matching messages in compilation-mode, keep track of the rule
employed for each match.  This facilitates debugging and allows us to
verify that each test case really exercises the rule that we expect it
to.

Naturally this uncovered several test cases that didn't check what the
author thought they did; the rules affixed to
compile-tests--test-regexps-data are those actually used, so that the
tests still pass.

* lisp/progmodes/compile.el (compilation--message): Add 'rule' slot.
(compilation-directory-properties, compilation-error-properties)
(compilation-internal-error-properties, compilation-parse-errors)
(compilation--compat-parse-errors): Set the rule slot.
* test/lisp/progmodes/compile-tests.el (compile-tests--test-regexps-data)
(compile-tests--grep-regexp-testcases)
(compile-tests--grep-regexp-tricky-testcases): Add rules to test cases.
(compile--test-error-line): Check that the rule matches what we expect.
(compile-test-grep-regexps): Adapt to test case format.
Remove now superfluous ert-info.

Hoist some loop-invariant variable bindings in compile.el

* lisp/progmodes/compile.el (compilation-parse-errors):
Hoist the binding of case-fold-search and a memq call out of
the loop, eliminating a minor but unnecessary quadratic term.

* lisp/info.el: Remove redundant :group args.

Improve Info-streamline-headings defaults

* lisp/info.el (Info-streamline-headings): Improve defaults.  These
produce somewhat more consistent results on my system, and seems
slightly more in line with current GNU practices.  For example, gcc
uses the "Software development" heading instead of "Programming".

`ffap-gopher-at-point' interminable without newlines

* lisp/ffap.el (ffap-gopher-at-point): Stop when we get to the end
of the buffer.
* test/lisp/ffap-tests.el (ffap-test-no-newlines): Ensure
termination for corner case (bug#44048).

Explain difference between Unicode and Emacs scripts

* nonascii.texi (Character Properties): Document that Emacs'
scripts and Unicode's scripts do not necessarily correspond.

cperl-mode: Delete a misleading comment, add tests for verification

* lisp/progmodes/cperl-mode.el: Delete a comment which explains a
bug which has been fixed a long time ago (bug#44073).
* test/lisp/progmodes/cperl-mode-tests.el
(cperl-mode-fontify-punct-vars): Add regression tests to verify
that fontification of punctuation variables doesn't start strings.

Handle "Before first headings" error in outline-cycle

* lisp/outline.el (outline-before-first-heading): New error.
(outline-back-to-heading): Signal the new error.
(outline-cycle): Ignore the error.
(outline-cycle-buffer): Simply pass 1 to 'outline-hide-sublevels'
(bug#41130).

Ffunction doc string clarification

* src/eval.c (Ffunction): Mention that `function' isn't quite like
`quote' in non-bytecompile circumstances, too (bug#41864).

* src/dired.c (Fdirectory_files, Fdirectory_files_and_attributes):

Adapt docstring.

* lisp/files.el (directory-files-no-dot-files-regexp): Adapt docstring.

; * admin/MAINTAINERS: Add entry for Michael Albinus.

; * etc/NEWS: Some copy edits.

Add new choice 'keep' to next-error-message-highlight (bug#32676)

* lisp/simple.el (next-error-message-highlight): Add new choice 'keep'.
(next-error-message-highlight): Don't delete overlay when option is 'keep'.

* etc/HELLO: Add Belarusian and use Javanese script for Javanese (bug#43887)

Add "Old-" prefix to "Version" header in more cases

These version numbers are historical accidents and not relevant today.
Ref: https://lists.gnu.org/r/emacs-devel/2020-03/msg00080.html

; * etc/NEWS: Call out the new variable 'shr-offer-extend-specpdl'.

Strengthen js-mode indentation tests

Test not only that the indentation engine is idempotent but that it
will indent a file to the expected shape from scratch.

* test/lisp/progmodes/js-tests.el (js-tests--remove-indentation): New.
(js-deftest-indent): Extend test.

Fix a misleading comment in Freplace_match

* src/search.c (Freplace_match): Fix a misleading comment
(bug#42424).

Document the new smiley value

* doc/misc/gnus.texi (Smileys): Document the emoji smiley value.

Fix up smiley emoji application to make it reversible

* lisp/gnus/smiley.el (smiley-region): Use text properties for the
emojis instead of rewriting the message.

Add support for emojis i smiley.el

* lisp/gnus/smiley.el (smiley-style): Add emoji
tag.
(smiley-emoji-regexp-alist): New defcustom.
(smiley-update-cache, smiley-region): Support emoji (non-image)
replacement (bug#43889).

Make nxml-newline-and-indent argument optional

* lisp/nxml/nxml-mode.el (nxml-newline-and-indent): Make argument
optional to conform to 'comment-line-break-function'.  (Bug#40193)

Minor improvements to emacsclient man page

* doc/man/emacsclient.1: Make flag descriptions into full sentences to
be more consistent.

Convert manual js indent tests to unit tests

* test/lisp/progmodes/js-tests.el (ert-x): Require.
(js-deftest-indent): New macro.  Use it to define tests for indenting
the below files.

* test/manual/indent/js-chain.js:
* test/manual/indent/js-indent-align-list-continuation-nil.js:
* test/manual/indent/js-indent-init-dynamic.js:
* test/manual/indent/js-indent-init-t.js:
* test/manual/indent/js.js:
* test/manual/indent/jsx-align-gt-with-lt.jsx:
* test/manual/indent/jsx-comment-string.jsx:
* test/manual/indent/jsx-indent-level.jsx:
* test/manual/indent/jsx-quote.jsx:
* test/manual/indent/jsx-self-closing.jsx:
* test/manual/indent/jsx-unclosed-1.jsx:
* test/manual/indent/jsx-unclosed-2.jsx:
* test/manual/indent/jsx.jsx: Move from here...
* test/lisp/progmodes/js-resources/js-chain.js:
* test/lisp/progmodes/js-resources/js-indent-align-list-continuation-nil.js:
* test/lisp/progmodes/js-resources/js-indent-init-dynamic.js:
* test/lisp/progmodes/js-resources/js-indent-init-t.js:
* test/lisp/progmodes/js-resources/js.js:
* test/lisp/progmodes/js-resources/jsx-align-gt-with-lt.jsx:
* test/lisp/progmodes/js-resources/jsx-comment-string.jsx:
* test/lisp/progmodes/js-resources/jsx-indent-level.jsx:
* test/lisp/progmodes/js-resources/jsx-quote.jsx:
* test/lisp/progmodes/js-resources/jsx-self-closing.jsx:
* test/lisp/progmodes/js-resources/jsx-unclosed-1.jsx:
* test/lisp/progmodes/js-resources/jsx-unclosed-2.jsx:
* test/lisp/progmodes/js-resources/jsx.jsx: ...to here.

* lisp/progmodes/ld-script.el: Use lexical-binding.

* lisp/progmodes/mixal-mode.el: Fix typos.

Set jao@gnu.org as maintainer of mixal-mode.el

* lisp/progmodes/mixal-mode.el: Set jao@gnu.org as maintainer of
mixal-mode.el.  (Bug#44037)

Use lexical-binding in mixal-mode.el

* lisp/progmodes/mixal-mode.el: Use lexical-binding.  (Bug#44037)

Extend next-error-message face to the edge of the window (bug#32676)

* lisp/simple.el (next-error-message): Add ':extend t' to this face.
(next-error-message-highlight): Put overlay over the newline as well.

Fix bad dimensions of initial frame on VcXsrv

* src/xterm.c (handle_one_xevent) [USE_GTK]: Don't obey
ConfigureNotify events if the frame is not visible.  (Bug#44002)

Copyright-paperwork-exempt: yes

Merge from origin/emacs-27

18c0e20bea (origin/emacs-27) Improve documentation of 'Info-hide-note...

; Merge from origin/emacs-27

The following commit was skipped:

47b8a1c767 * admin/release-process: Add note to update files from ups...

Merge from origin/emacs-27

65078e0a76 * lisp/info.el (Info-hide-note-references): Doc fix.  (Bug...
30305b543d Make lisp/progmodes/js.el dependent on CC Mode in the Make...
c37b2a9b42 Yet another fix for 'set-minibuffer-message'
72dd911981 Fix posn-at-x-y in builds --without-x
ace25f2066 Clarify the seq-reduce documentation
7d598e281d Make tramp-completion-reread-directory-timeout obsolete (B...
2c31ce18ea Fix 'message' when there's active minibuffer on another frame

# Conflicts:
# doc/misc/tramp.texi
# etc/NEWS

; Merge from origin/emacs-27

The following commit was skipped:

f539ee9042 * lisp/emacs-lisp/easy-mmode.el (define-minor-mode): Doc t...

* etc/NEWS: Mention new lexical binding conversion aid.

Update Modus themes' NEWS entry

* etc/NEWS: Reword entry about new 'modus-operandi' and
'modus-vivendi' themes.  Include reference to their manual.

mixal-mode: add missed instructions

Synchronises with latest released GNU MDK 1.2.11

* mixal-mode.el (mixal-operation-codes-alist):
  Add missed instructions: SLB,SRB,JAE,JAO,JXE,JXO

Base bookmark-bmenu-mode on tabulated-list-mode (Bug#39293)

Rewriting bookmark-bmenu-mode to be based on 'tabulated-list-mode'
allows us to greatly simplify the code in several cases.  In addition,
we get some features for free, such as sorting by column.

The only functional step backwards is that we no longer support the
optional "inline" header line, a bookmark.el-specific feature to have
a header without using 'header-line-format'.  This feature is believed
to be not very useful or widely used.

* lisp/bookmark.el (tabulated-list): Require.
(bookmark-bmenu-mode): Inherit from 'tabulated-list-mode' instead of
'special-mode' and make the necessary changes to support that.
(bookmark-bmenu-mode-map): Inherit from 'tabulated-list-mode-map'
instead of 'special-mode-map'.  Remove now duplicate key bindings.
(bookmark-bmenu--revert): New function to show the bookmark list using
'tabulated-list-mode'.
(bookmark-bmenu-list): Simplify by using above new function.
(bookmark-bmenu-bookmark): Adapt to 'tabulated-list-mode'.
(bookmark-bmenu--name-predicate)
(bookmark-bmenu--file-predicate): New functions used by
'tabulated-list-mode' to sort.

(bookmark-bmenu-set-header): Redefine as obsolete function alias for
'tabulated-list-init-header'.
(bookmark-bmenu-toggle-filenames, bookmark-bmenu-show-filenames)
(bookmark-bmenu-hide-filenames, bookmark-bmenu-mark)
(bookmark-bmenu-mark-all, bookmark-bmenu-unmark-all)
(bookmark-bmenu-delete-all, bookmark-bmenu-unmark)
(bookmark-bmenu-delete, bookmark-bmenu-delete-backwards): Simplify now
that we can depend on 'tabulated-list-mode' to do more work.

(bookmark-bmenu-use-header-line)
(bookmark-bmenu-inline-header-height): Declare variables relating to
the now unsupported "inline" header obsolete.
(bookmark-bmenu-ensure-position)
(bookmark-bmenu-execute-deletions): Remove code to handle "inline" header.

* test/lisp/bookmark-tests.el
(bookmark-test-bmenu-edit-annotation/show-annotation)
(bookmark-test-bmenu-unmark, bookmark-test-bmenu-mark): Update tests
for minor changes when using 'tabulated-list-mode'.

; * etc/NEWS: Move 'narrow-to-prompt' entry to "Shell" section.

Add aid for finding missing dynamic variable declarations

Find lexical use of variables that are dynamically declared in other
files by recording 'defvar' declarations in files that can be read
in by the compiler in a second compilation.  This is particularly
useful when converting code to use lexical-binding.

The facility is controlled by setting environment variables:

 EMACS_GENERATE_DYNVARS -- set to non-empty to generate a .dynvars file
                           corresponding to each .elc.
 EMACS_DYNVARS_FILE     -- set to the name of a .dynvars file to use
                           as defvar information during compilation,
                           enabling the new warnings.

* lisp/emacs-lisp/bytecomp.el (byte-compile--known-dynamic-vars)
(byte-compile--seen-defvars): New variables.
(byte-compile-warning-types): Add lexical-dynamic warning.
(byte-compile--load-dynvars, byte-compile--warn-lexical-dynamic):
New functions.
* lisp/emacs-lisp/bytecomp.el (byte-compile-file, byte-compile--declare-var)
(byte-compile-lambda, byte-compile-bind): Add dynamic variable loads,
dumps and checks.
* doc/lispref/variables.texi (Converting to Lexical Binding): Document.

* test/lisp/mail/rfc822-tests.el: New file.

* lisp/url/url-vars.el: Use lexical-binding.

Improve documentation of 'Info-hide-note-references' in info.texi

* doc/misc/info.texi (Help-Xref): Improve the wording.
(Emacs Info Variables): Update the documentation of
'Info-hide-note-references'.  (Bug#44043)

New shell-mode command to narrow to the command under point

* lisp/shell.el (shell--prompt-end-position)
(shell--prompt-begin-position): Helper functions.

* lisp/shell.el (shell-narrow-to-prompt): New command and
keystroke (bug#41784).

Make woman ignore the new groff kerning operators

* lisp/woman.el (woman-decode-region): Ignore the new groff
kerning operators (bug#42219).

Fix `browse-url-of-dired'

* lisp/net/browse-url.el (browse-url-emacs): Make the
`browse-url-of-dired' command work again after the browse-emacs
changes (bug#42429).

Avoid infloop in which-function-mode when a vc file has changed

* lisp/vc/diff-mode.el (diff-find-source-location): Avoid warnings
when called from which-function-mode and the file has changed
(bug#42818).

* admin/release-process: Add note to update files from upstream.

(cherry picked from commit 86dd9d12aa5a273da2efd4ce8c6e35ae343f1494)

Fix narrow-to-defun in f90-mode

* lisp/progmodes/f90.el (f90-beginning-of-subprogram): Make
narrow-to-defun work better (bug#44042).

* lisp/info.el (Info-hide-note-references): Doc fix.  (Bug#44043)

* admin/release-process: Add note to update files from upstream.

* doc/lispref/variables.texi (Converting to Lexical Binding): New section

Extract it from `Using Lexical Binding` and extend it a bit.

* lisp/progmodes/python.el: Teach f-strings to `font-lock`

(python--f-string-p, python--font-lock-f-strings): New functions.
(python-font-lock-keywords-maximum-decoration): Use them.

Make lisp/progmodes/js.el dependent on CC Mode in the Makefile.

This will prevent version mismatches between compile time and runtime
versions.  This fixes bug #43037.

* lisp/Makefile.in: Make js.el dependent on cc-{defs,engine,mode}.elc.

indent-rigidly doc string clarification

* lisp/indent.el (indent-rigidly): Note that the command
deactivates the mark (bug#42842).