Make load argument of native-compile-async internal

* lisp/emacs-lisp/comp.el (native--compile-async): New defun extracted
from native-compile-async.
(native-compile-async): Remove load argument and use above new defun.
* src/comp.c (maybe_defer_native_compilation): Use above new
defun.  (Bug#44676)

* lisp/emacs-lisp/comp.el (native-compile-async): Doc fix.

Support native compilation of packages on install

* lisp/emacs-lisp/package.el (package-unpack)
(package--native-compile): Native compile packages on install, if the
feature is available.  (Bug#44676)
(package-native-compile): New defcustom.

compile-async: Don't error out on deferred compilation after load

* lisp/emacs-lisp/comp.el (native-compile-async): Update
comp-files-queue when deferred compilation is requested.  (Bug#44676)

; Fix trivial typos

Add 'EMACSNATIVELOADPATH' env variable support (bug#44726)

* lisp/startup.el (normal-top-level): Read 'EMACSNATIVELOADPATH'
and add entries too `comp-eln-load-path'.
* lisp/mail/emacsbug.el (report-emacs-bug): Dump
also 'EMACSNATIVELOADPATH'.

* Fix eln file hasing for symlink paths (bug#44701)

* src/comp.c (Fcomp_el_to_eln_filename): Call `file-truename'
in place of `expand-file-name' when available.

Revert "[WIP] Add and improve section headings"

This reverts commit 007a5a677573ab628426a0605eb38f8e68fe1953.

Revert "[TODO] Remove noisy anti-noise feature"

This reverts commit c36b4eed2d76f0e804d27d35dd6281f858639f94.

[TODO] Remove noisy anti-noise feature

[WIP] Add and improve section headings

Various doc fixes for comp.el and comp.c

* lisp/emacs-lisp/comp.el: Remove redundant :group args.
(comp-async-cu-done-hook, comp-async-all-done-hook)
(comp-async-env-modifier-form, comp-dry-run)
(comp-ensure-native-compiler, comp-func-ret-typeset)
(comp-func-ret-range, comp-limple-lock-keywords)
(comp-make-curr-block):
* src/comp.c (Fcomp_el_to_eln_filename, Fcomp__init_ctxt)
(Fcomp_native_driver_options_effective_p)
(Fcomp__compile_ctxt_to_file, Fcomp_libgccjit_version)
(Fcomp__register_lambda, Fcomp__register_subr)
(Fcomp__late_register_subr, Fnative_elisp_load, syms_of_comp): Doc fixes.

Fix nativecomp cond-rw pass

* lisp/emacs-lisp/comp.el (comp-mvar-symbol-p): Improve it.
(comp-cond-rw-func): Fix logic for multiple predecessor on target
block.
* test/src/comp-tests.el (comp-test-cond-rw-1): New test.
* test/src/comp-test-funcs.el (comp-test-cond-rw-1-1-f)
(comp-test-cond-rw-1-2-f): New functions.

* Improve `comp-fwprop-call'

* lisp/emacs-lisp/comp.el (comp-function-call-maybe-fold):
Document return value.
(comp-fwprop-call): Simplify and improve.

* Add more type specifiers

* lisp/emacs-lisp/comp.el (comp-known-type-specifiers): Add more
pure functions.

Merge remote-tracking branch 'savannah/master' into dev

Add `comp-constraint-to-type-spec' and better handle boolean type spec

* lisp/emacs-lisp/comp.el (comp-constraint-to-type-spec): New
function splitting out code from comp-ret-type-spec + better
handle boolean type specifier.
(comp-ret-type-spec): Rework to leverage
`comp-constraint-to-type-spec'.
* test/src/comp-tests.el (comp-tests-type-spec-tests): Add a
testcase.

Handle correctly quoting in *Native-compile-Log* buffer

* lisp/emacs-lisp/comp.el (comp-log): Add `quoted' parameter and
pass it to `comp-log-to-buffer'.
(comp-log-to-buffer): Add `quoted' parameter and leverage `prin1'
or `princ' accordingly.

* Split logic into comp-fwprop-call and improve it

* lisp/emacs-lisp/comp.el (comp-func-ret-valset)
(comp-fwprop-call): New functions.
(comp-fwprop-insn): Remove code duplicaiton and call
`comp-fwprop-call'.

* Fix debug symbol emission

* src/comp.c (Fcomp__compile_ctxt_to_file): Now that we do not
rely anymore on globlal variables move logic in from
'Fcomp__init_ctxt' so comp.debug is already set correctly.

* Add a number of type specifiers for pure function

* lisp/emacs-lisp/comp.el (comp-known-type-specifiers): Add 60
pure function type specifiers.

Characterize functions in terms of type specifiers

* lisp/emacs-lisp/comp.el (comp-known-type-specifiers): New const
in place of `comp-known-ret-types' and `comp-known-ret-ranges'.
(comp-constraint): New struct to separate the constraint side of
an mvar.
(comp-constraint-f): Analogous for functions.
(comp-mvar): Rework and include `comp-constraint'.
(comp-type-spec-to-constraint): New function.
(comp-known-constraints-h): New const.
(comp-func-ret-typeset, comp-func-ret-range): Rework.
(comp-fwprop-insn): Fix.
* test/src/comp-tests.el (destructure-type-spec): New testcase.

* lisp/progmodes/xref.el (xref-goto-xref): Prefix arg quits the *xref* buffer.

(bug#44611)

* lisp/org/ob-ruby.el (org-babel-ruby-initiate-session): Use :ruby header arg.

Allow specification of ruby command using the :ruby header arg.
https://lists.gnu.org/archive/html/emacs-orgmode/2020-11/msg00166.html

Fix `speedbar-directory-buttons' when using Tramp

* lisp/speedbar.el (speedbar-directory-buttons): Make speedbar
work with directories accessed via Tramp (bug#44622).

Copyright-paperwork-exempt: yes

Don't quote lambdas in several places

* lisp/align.el (align-highlight-rule):
* lisp/bookmark.el (bookmark-maybe-sort-alist):
* lisp/emacs-lisp/advice.el (ad-read-advice-name)
(ad-retrieve-args-form, ad-make-hook-form, defadvice)
(ad-with-originals):
* lisp/foldout.el (foldout-inhibit-key-bindings):
* lisp/gnus/gnus-bookmark.el (gnus-bookmark-maybe-sort-alist):
* lisp/mail/rfc822.el (rfc822-addresses-1):
* lisp/net/eudcb-ldap.el (eudc-ldap-cleanup-record-simple):
* lisp/net/net-utils.el (network-connection-to-service):
* lisp/net/socks.el (socks-build-auth-list):
* lisp/org/ox-odt.el (org-odt--image-size):
* lisp/pcomplete.el (pcomplete-command-completion-function)
(pcomplete-default-completion-function, pcomplete-opt):
* lisp/progmodes/cperl-mode.el (cperl-highlight-charclass)
(cperl-tags-hier-init, cperl-tags-treeify)
(cperl-next-interpolated-REx, cperl-time-fontification):
* lisp/shadowfile.el (shadow-copy-files, shadow-shadows-of-1)
(shadow-save-buffers-kill-emacs):
* lisp/strokes.el (strokes-renormalize-to-grid):
* lisp/tempo.el (tempo-insert, tempo-forward-mark)
(tempo-backward-mark):
* lisp/textmodes/artist.el (artist-submit-bug-report):
* lisp/textmodes/ispell.el (ispell-complete-word):
* lisp/url/url-auth.el (url-get-authentication):
* lisp/url/url-cache.el (url-cache-create-filename-human-readable):
* lisp/vcursor.el (vcursor-find-window):
* test/lisp/textmodes/reftex-tests.el
(reftex-parse-bibtex-entry-test): Don't quote lambdas.

Work around glib messing with signal handlers more than it should

* src/process.c (init_process_emacs): force glib's g_unix_signal
handler into lib_child_handler where it should belong.

Copyright-paperwork-exempt: yes

Add an option to preserve ANSI sequences

* lisp/ansi-color.el Add an option to preserve the ANSI sequences
* test/lisp/ansi-color-tests.el: Add tests (bug#44589).

project-or-external-find-file doc string fix

* lisp/progmodes/project.el (project-or-external-find-file): Doc
string fix -- it's not "recognizing" file names (bug#44588).

Use lexical-binding in fortune.el and add tests

* lisp/play/fortune.el: Use lexical-binding.  Remove redundant
:group args.
(fortune-in-buffer): Quote function symbol as such.
* test/lisp/play/fortune-resources/fortunes:
* test/lisp/play/fortune-tests.el: New files.
* .gitignore: Ignore generated file fortunes.dat.

Make Calc windows dedicated by default

* lisp/calc/calc.el (calc-make-windows-dedicated): New defcustom.
(calc, calc-trail-display): Set Calc windows dedicated if
calc-make-windows-dedicated is non-nil.  Patch by Boruch Baum
<boruch_baum@gmx.com>.  (Bug#44108)

* etc/NEWS (Calc): Announce the new behavior.

Make 'prefer-utf-8' heed inhibit-*-detection variables

* lisp/international/mule-conf.el (prefer-utf-8): Inhibit
detection of null bytes and ISO escape sequences if the respective
inhibit-*-detection variables say so.  (Bug#44486)

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

* lisp/faces.el (mode-line-highlight): Use :box only when supported.

Capitalize portable dump messages.

We capitalize all other messages during the dump, so capitalize the
"dump mode" and "dumping fingerprint" ones as well for consistency.

* src/pdumper.c (Fdump_emacs_portable): Capitalize fingerprint message
prefix.

* lisp/loadup.el: Capitalize "dump mode" message.

Face-changing text properties and help-echo now work with xterm-mouse.

* src/dispnew.c (update_mouse_position): New function for mouse
movement logic in 'handle_one_term_event' that can be shared across
different mouse backends.
(display--update-for-mouse-movement): New lisp function, call it.
* lisp/xt-mouse.el (xterm-mouse--handle-mouse-movement): New function
that calls 'display--update-for-mouse-movement'.
(xterm-mouse-translate-1): Call it.
* src/term.c (handle_one_term_event): Inline logic from
'term_mouse_movement' and call 'update_mouse_position'.
(term_mouse_movement): Delete.

Save instantiated gnus-search engines in an alist

So we aren't re-instantiating (and potentially configuring) them with
every search.

* lisp/gnus/gnus-search.el (gnus-search-engine-instance-alist): New
variable holding server->engine mapping.
(gnus-search-server-to-engine): See if we've already instantiated this
server. If so, return it. If not, instantiate it and save in the above
variable.
(gnus-search-shutdown): Shutdown function clearing the above alist.

Make sure Gnus search groups search topics recursively

* lisp/gnus/gnus-group.el (gnus-group-make-search-group,
gnus-group-read-ephemeral-search-group): If a search is initiated from
a topic line, make sure we get all the groups under that topic (and
under sub-topics).

Simplify quick-check composition regexps

* lisp/international/ucs-normalize.el
(quick-check-composition-list-to-regexp): Don't add an explicit
pattern for U+1161..U+1175 and U+11a8..U+11c2 since these are already
part of `combining-chars'.

Merge from origin/emacs-27

a3d316bbb7 (origin/emacs-27) Update information about refcards
f43e9ad524 Avoid crashes in the daemon due to user interaction

; Merge from origin/emacs-27

The following commit was skipped:

658952a57a Some minor changes to Tramp, do not merge with master

Merge from origin/emacs-27

ac1a2b2160 Add more doc-view requirements
109eb1e7e2 Fix undefined behavior when fetching glyphs from the displ...

# Conflicts:
# lisp/doc-view.el

; Merge from origin/emacs-27

The following commit was skipped:

78e1646bf7 Fix pcase rx form snag with '?' and '??' (bug#44532)

Merge from origin/emacs-27

75384bd155 Update the doc-view header line
13ab70c80e Avoid breaking Arabic shaping in 'window-text-pixel-size'
e693d97e50 doc-view.el comment clarification
968e85a2ce Update erc documentation about C-c C-b

Fix error with fn key in NS port (bug#44533)

* src/nsterm.m ([EmacsView keyDown:]): Move the correction for fn key
handling to before the modifiers are calculated.

Some minor Tramp fixes, resulting from test campaign

* lisp/net/tramp.el (tramp-handle-write-region):
* lisp/net/tramp-adb.el (tramp-adb-handle-write-region):
* lisp/net/tramp-sh.el (tramp-sh-handle-write-region):
* lisp/net/tramp-smb.el (tramp-smb-handle-write-region): Use `current-time'
if needed.

* lisp/net/tramp-gvfs.el (tramp-gvfs-gio-mapping):
(tramp-gvfs-do-copy-or-rename-file): Remove "gvfs-rename", it is
not trustworthy.

* test/lisp/net/tramp-tests.el (tramp-test07-file-exists-p): Check also for
symlinked files in trash.
(tramp-test20-file-modes): Revert last change, it was a thinko.

Update information about refcards

* admin/release-process (refcards):
* admin/make-tarball.txt (refcards): Update information about
generating refcards and required TeX/LaTeX packages.

Add copy insn testcase

* test/src/comp-tests.el (copy-insn): New testcase.
* test/src/comp-test-funcs.el (comp-test-copy-insn-f): New
function.

* lisp/emacs-lisp/comp.el (comp-mvar-value-vld-p): Fix logic.

* Memoize `comp-common-supertype'

* lisp/emacs-lisp/comp.el (comp-ctxt): Add `common-supertype-mem'
slot.
(comp-common-supertype): Memoize.

* Add few more type specifier tests

* test/src/comp-tests.el (comp-tests-type-spec-tests): Add three
tests and uncomment one.

* Rework `comp-ret-type-spec' in terms of `comp-phi'

* lisp/emacs-lisp/comp.el (comp-ret-type-spec): Use `comp-func'
not to duplicate logic plus add null type specifier support and
some comments.

* Move phi function code into dedicated function and improve it

* lisp/emacs-lisp/comp.el (comp-phi): New function moving logic
from `comp-fwprop-insn'.

Don't quote lambdas in several places

* lisp/allout-widgets.el (allout-widgets-adjusting-message)
(allout-widgets-exposure-change-processor)
(allout-widgets-count-buttons-in-region):
* lisp/ansi-color.el (ansi-color-make-color-map):
* lisp/case-table.el (describe-buffer-case-table):
* lisp/emacs-lisp/byte-opt.el (byte-decompile-bytecode-1):
* lisp/gnus/gnus-agent.el (gnus-agent-regenerate-group):
* lisp/gnus/nnir.el (nnir-run-swish++, nnir-run-swish-e)
(nnir-run-hyrex, nnir-run-namazu):
* lisp/hippie-exp.el (make-hippie-expand-function)
(try-complete-lisp-symbol, try-complete-lisp-symbol-partially)
(try-expand-all-abbrevs):
* lisp/international/mule-cmds.el (sort-coding-systems)
(select-safe-coding-system, select-message-coding-system)
(read-language-name, encoded-string-description):
* lisp/international/quail.el (quail-keyseq-translate)
(quail-get-translations, quail-build-decode-map)
(quail-insert-decode-map):
* lisp/jka-compr.el (jka-compr-uninstall):
* lisp/locate.el (locate-in-alternate-database):
* lisp/mail/mailabbrev.el (mail-resolve-all-aliases-1)
(mail-abbrev-make-syntax-table):
* lisp/mh-e/mh-seq.el (mh-read-folder-sequences):
* lisp/net/eudcb-ldap.el (eudc-ldap-simple-query-internal):
* lisp/progmodes/make-mode.el (makefile-query-targets)
(makefile-prompt-for-gmake-funargs):
* lisp/shadowfile.el (shadow-cancel, shadow-shadows-of):
* lisp/sort.el (sort-pages, sort-fields, sort-regexp-fields):
* lisp/subr.el (listify-key-sequence):
* lisp/term/wyse50.el (terminal-init-wyse50):
* lisp/textmodes/ispell.el (ispell-help)
(ispell-begin-tex-skip-regexp):
* lisp/textmodes/page-ext.el (pages-sort-region):
* lisp/textmodes/refer.el (refer-find-entry-in-file):
* lisp/url/url-expand.el (url-expand-file-name): Don't quote lambdas.

Add help-char to the cache key in read-char-from-minibuffer as well

It's highly unlikely that help-char will be changed from its default value 8,
but formally there is a dependence on help-char.

Emit required version when Harfbuzz is not found but Cairo is

* configure.ac: Define harfbuzz_required_ver with required
harfbuzz version, and put it in the warning message emitted when
Cairo is found but not HarfBuzz.

vhdl-mode: remove minor obstacle to static checking

* lisp/progmodes/vhdl-mode.el (vhdl-directive-keywords-regexp):
Remove unnecessary global variable.
(vhdl-words-init): Remove assignment.
(vhdl-font-lock-init): Inline expression.  Use regexp-opt.

Remove mention of `edebug-on-signal' from a doc string

* lisp/emacs-lisp/edebug.el (edebug-mode): Don't mention
non-existent user option (bug#44577).

Clarify project-find-file doc string

* lisp/progmodes/project.el (project-find-file): Don't say
anything about recognizing file names, as that may lead the user
to think that it'll check whether the string at point is an
existing file (bug#44588).

Add help-form to the cache key in read-char-from-minibuffer

* test/lisp/help-fns-tests.el: Silence byte-compiler.

* test/lisp/hfy-cmap-resources/rgb.txt: Add comment line.

Remove redundant installation instructions

* lisp/net/newsticker.el:
* lisp/net/sieve-mode.el:
* lisp/play/bubbles.el:
* lisp/play/handwrite.el:
* lisp/progmodes/python.el:
* lisp/progmodes/ruby-mode.el:
* lisp/whitespace.el: Remove redundant installation instructions.
These packages are distributed with Emacs and/or GNU ELPA.
* lisp/calendar/timeclock.el:
* lisp/ehelp.el:
* lisp/emacs-lisp/checkdoc.el:
* lisp/filesets.el:
* lisp/mail/reporter.el:
* lisp/net/rfc2104.el:
* lisp/net/webjump.el:
* lisp/pixel-scroll.el: Remove redundant recommendation to call
require before using autoloaded functions.
* lisp/tar-mode.el: Remove reference to package uncompress, removed in
Emacs 23.

* lisp/progmodes/ruby-mode.el (auto-mode-alist): Add Brewfile.

Fix mistake in describe-buffer-bindings

* src/keymap.c (Fdescribe_buffer_bindings): Fix a call in
describe-buffer-bindings.  This fixes a mistake in my previous commit
to prefer the Lisp version of describe-map-tree (8a1441310aa1), where
0 was accidentally converted to Qt in two places.

Use cache with help-char in read-char-from-minibuffer unless help-form is nil

* Nativecomp testsuite rework for derived return type specifiers

As we have derived return type specifiers as some test for them.  Also
rewrite some propagation related test using return type specifiers too
as it's way more convenient.

* test/src/comp-tests.el (fw-prop-1): Nit rename.
(comp-tests-check-ret-type-spec): New function.
(comp-tests-type-spec-tests): New variable.
(comp-tests-cond-rw-0-var) Remove variable.
(cond-rw-0, cond-rw-1, cond-rw-2, cond-rw-3, cond-rw-4, cond-rw-5)
Remove tests as now covered by `comp-tests-check-ret-type-spec'.

* Add nativecomp derived return type specifier computation support

* lisp/emacs-lisp/comp.el (comp-post-pass-hooks): Nit.
(comp-func): Add `ret-type-specifier' slot.
(comp-ret-type-spec): New function.
(comp-final): Call `comp-ret-type-spec'.

* Unline some functions to optimize bootstrap time

* lisp/emacs-lisp/comp.el (comp-mvar-value-vld-p)
(comp-mvar-value, comp-mvar-fixnum-p, comp-set-op-p)
(comp-assign-op-p, comp-call-op-p, comp-type-hint-p)
(comp-func-ret-typeset, comp-function-pure-p)
(comp-alloc-class-to-container, comp-lex-byte-func-p)
(comp-lap-eob-p, comp-lap-fall-through-p, comp-emit)
(comp-emit-set-call, comp-mvar-propagate)
(comp-function-foldable-p, comp-function-call-maybe-fold)
(comp-trampoline-filename): Uninline functions.

* Add to elisp-mode `emacs-lisp-native-compile-and-load'

* lisp/progmodes/elisp-mode.el
(emacs-lisp--before-compile-buffer): New function.
(emacs-lisp-byte-compile-and-load): Use the previous.
(emacs-lisp-native-compile-and-load): New function.

* Fix limple-mode for new type and range limple semantic

* lisp/emacs-lisp/comp.el (comp-limple-branches, comp-limple-ops):
New variables.
(comp-limple-lock-keywords): Update value.

Add a nativecomp testcase

Having this while re-debugging the boostrap would have saved few hours
of debug so let's add it.

* test/src/comp-tests.el (and-3): Add test.
* test/src/comp-test-funcs.el (comp-test-and-3-var): New var.
(comp-test-and-3-f): New function.

Add initial nativecomp typeset and range propagation support

This commit add an initial support for a better type propagation and
integer range propagation.

Each mvar can be now characterized by a set of types, a set of values
and an integral range.

* lisp/emacs-lisp/comp.el (comp-known-ret-types): Store into
typeset and remove fixnum.
(comp-known-ret-ranges, comp-type-predicates): New variables.
(comp-ctxt): Remove supertype-memoize slot and add
union-typesets-mem.
(comp-mvar): Remove const-vld, constant, type slots. Add typeset,
valset, range slots.
(comp-mvar-value-vld-p, comp-mvar-value, comp-mvar-fixnum-p)
(comp-mvar-symbol-p, comp-mvar-cons-p)
(comp-mvar-type-hint-match-p, comp-func-ret-typeset)
(comp-func-ret-range): New functions.
(make-comp-mvar, make-comp-ssa-mvar): Update logic.
(comp--typeof-types): New variable.
(comp-supertypes, comp-common-supertype): Logic update.
(comp-subtype-p, comp-union-typesets, comp-range-1+)
(comp-range-1-, comp-range-<, comp-range-union)
(comp-range-intersection): New functions.
(comp-fwprop-prologue, comp-mvar-propagate)
(comp-function-foldable-p, comp-function-call-maybe-fold)
(comp-fwprop-insn, comp-call-optim-func, comp-finalize-relocs):
Logic update.

* src/comp.c (emit_mvar_rval, emit_call_with_type_hint)
(emit_call2_with_type_hint): Logic update.

* lisp/emacs-lisp/cl-preloaded.el (cl--typeof-types): Undo the add
of fixnum and bignum as unnecessary.

* test/src/comp-tests.el
(comp-tests-mentioned-p-1, comp-tests-cond-rw-checker-val)
(comp-tests-cond-rw-checker-type, cond-rw-1, cond-rw-2)
(cond-rw-3, cond-rw-4, cond-rw-5): Update for new type interface.
(range-simple-union, range-simple-intersection): New integer range
tests.
(union-types): New union type test.

* Rename two nativecomp functions

* lisp/emacs-lisp/comp.el (comp-function-foldable-p): Rename from
comp-function-optimizable-p.
(comp-function-call-maybe-fold): Same from
comp-function-call-maybe-fold.

Avoid crashes in the daemon due to user interaction

* src/minibuf.c (read_minibuf): Avoid crashes in the daemon if the
init file invokes some kind of minibuffer interaction, by not
updating the selected frame if it's the initial frame.
(Bug#44583)

In dired-query use read-char-from-minibuffer with bound help-char (bug#42708)

* lisp/dired-aux.el (dired-query): Replace read-char-choice call
with read-char-from-minibuffer.

* lisp/subr.el (read-char-choice): Restore the previous version
that uses read-key.
(read-char-from-minibuffer): Bind help-char to help-form-show
when help-form is non-nil.

Remove unused "internal" gnus-search variables

* lisp/gnus/gnus-search.el (gnus-search-memo-query,
gnus-search-memo-server): No longer needed.

Fix defgeneric name of gnus-search-index(ed)-extract

* lisp/gnus/gnus-search.el (gnus-search-indexed-extract): Had the
wrong name on the generic.

Some minor changes to Tramp, do not merge with master

* lisp/net/tramp.el (tramp-handle-directory-files)
(tramp-handle-directory-files-and-attributes):
* lisp/net/tramp-adb.el
(tramp-adb-handle-directory-files-and-attributes):
* lisp/net/tramp-rclone.el (tramp-rclone-handle-directory-files):
* lisp/net/tramp-sh.el (tramp-sh-handle-directory-files-and-attributes):
* lisp/net/tramp-smb.el (tramp-smb-handle-directory-files): Add _COUNT.
Make the functions forward compatible.

* lisp/net/tramp-gvfs.el (tramp-gvfs-enabled):
Increase `max-specpdl-size' temporarily.

* test/lisp/net/tramp-tests.el (tramp--test-share-p): New defun.
(tramp-test05-expand-file-name-relative): Use it.

Fix python-font-lock-keywords-maximum-decoration performance regression

* lisp/progmodes/python.el
(python-font-lock-keywords-maximum-decoration): `symbol-name'
should not be quantified by a `+' as it is redundant and performs
very badly (bug#44572).

Remove mention of global-cedet-m3-minor-mode

* lisp/cedet/semantic.el (semantic-submode-list):
(semantic-default-submodes): Remove mention of
global-cedet-m3-minor-mode, which no longer exists, apparently
(bug#44565).

Fix font lock of assignments with type hints in Python

* lisp/progmodes/python.el
(python-font-lock-keywords-maximum-decoration): Fix regular
expressions for font lock of assignments with type hints (bug#44568).

The font lock of assignments with type hints in Python is rather bad.
Consider the following example:

    from typing import Mapping, Tuple, Sequence
    var1: int = 5
    var2: Mapping[int, int] = {10: 1024}
    var3: Mapping[Tuple[int, int], int] = {(2, 5): 32}
    var4: Sequence[Sequence[int]] = [[1], [1, 2], [1, 2, 3]]
    var5: Sequence[Mapping[str, Sequence[str]]] = [
        {
            'red': ['scarlet', 'vermilion', 'ruby'],
            'green': ['emerald green', 'aqua']
        },
        {
            'sword': ['cutlass', 'rapier']
        }
    ]

As things stand right now, only ‘var1’ would be highlighted.  To make
things worse, the ‘Mapping’ type hint of ‘var2’ would also be
highlighted, which is entirely incorrect.

This commit makes all of ‘var1’ through ‘var5’ be highlighted
correctly.

Cleanup of the test file for cperl-mode

* test/lisp/progmodes/cperl-mode-tests.el
(cperl--run-test-cases): New macro, factored out from various
indentation / rewriting tests.  Contains documentation of the
format used by the cperl-mode-resources files.
(cperl-test-bug-19709): Replace 'next-line' by 'forward-line'.
(cperl-test-indent-exp),
(cperl-test-indent-styles),
(cperl-test-bug-30393): Use the new macro.
(cperl-test-bug-19709): Make fit for Emacs 26.
(cperl-test-indent-styles): Skip for Perl mode (bug#44561).

* lisp/server.el: Refactor frame creation functions

(server--create-frame): New function, extracted from
`server-create-dumb-terminal-frame`.
(server-create-window-system-frame, server-create-tty-frame):
(server-create-dumb-terminal-frame): Use it.

* lisp/server.el: Fix frame creation on dumb terminals (bug#25547)

(server-create-dumb-terminal-frame): New function.
(server-process-filter): Use it.
(server-delete-client): Don't delete tty terminal when it's not
exclusive to this client.

Don't set file name variable in org-element-parse-secondary-string (bug#44524)

* lisp/org/org-element.el (org-element-parse-secondary-string):
Don't set buffer-local variables buffer-file-name and buffer-file-truename
in temporary buffer.

* lisp/leim/quail/compose.el ("iso-transl"): New input method.

* doc/emacs/basic.texi (Inserting Text):
Mention transient input method "iso-transl".

* lisp/leim/quail/latin-ltx.el: Use same Keywords as in other quail files.

New debugging command 'malloc-info'

* src/alloc.c (Fmalloc_info) [GNU_LINUX]: New command.
(syms_of_alloc): Defsubr it.  (Bug#43389)

Clear the vc-state cache when returning nil

* lisp/vc/vc-hg.el (vc-hg-registered):
Clear the vc-state cache when returning nil.

Remove extra process call from vc-hg-registered

Prefer vc-state to benefit from its caching (bug#44534)

This same technique is used in vc-git.el,
per commit 2018-06-28 "Remove extra process call from vc-git-find-file-hook"
93c41ce6aa64b14fc9bd7bdd0d909915a79191cd.

* lisp/vc/vc-hg.el (vc-hg-registered): Use vc-state rather than vc-hg-state.

Fix a recent change in image.c for MS-Windows

* src/image.c: Fix DEF_DLL_FN of
rsvg_handle_get_intrinsic_dimensions.  Reported by Andy Moreton
<andrewjmoreton@gmail.com>.

Add more doc-view requirements

* lisp/doc-view.el: Add more requirements.

Only use nbutlast when we actually want to modify the original list

* lisp/net/tramp-gvfs.el (tramp-gvfs-dbus-byte-array-to-string):
Don't modify the byte array.
* lisp/net/tramp-integration.el (tramp-eshell-directory-change):
Don't modify the underlying exec-path.

Remove ephemeral group on error or null result

* lisp/gnus/nnselect.el (nnselect-request-group): If an ephemeral
group is empty, there is nothing to see, so remove the group.
(nnselect-run): Catch and return an empty artlist on error.

CC Mode: fix many compiler warnings which would appear with lexical binding

* lisp/progmodes/cc-align.el (three places) prefix langelem with a _.

* lisp/progmodes/cc-{cmds,engine}.el: Remove superfluous local variables.

* lisp/progmodes/cc-defs.el (c-will-be-unescaped): Remove unused parameter
end.
* lisp/progmodes/cc-engine.el (c-looking-at-decl-block): Remove unused
parameter containing-sexp.
(c-looking-at-special-brace-list); Remove unused parameter lim.
(c-add-class-syntax): Remove unused parameter paren-state.

Fix undefined behavior when fetching glyphs from the display vector.

You can trigger this rather obscure bug by enabling selective display
if the second glyph in its display vector has an invalid face.  For
example, evaluate

(set-display-table-slot standard-display-table
                        'selective-display [?A (?B . invalid)])

and then enable selective display.

* src/xdisp.c (next_element_from_display_vector): Check whether next
glyph code is valid before accessing it.

Add test for substitute-command-keys with command remap

* test/lisp/help-tests.el (help-tests-remap-map): New variable.
(help-tests-substitute-command-keys/remap): New test.
(help-tests-substitute-command-keys/keymaps)
(help-tests-substitute-command-keys/undefined-map): Fix indentation.

shortdoc: prefer seq-contains-p over seq-contains

* lisp/emacs-lisp/shortdoc.el (sequence): use seq-contains-p instead
of seq-contains, which is obsolete as of 27.1.  (Bug#44536)

Copyright-paperwork-exempt: yes

Simplify getting value of text-quoting-style (Bug#44471)

* src/doc.c (text_quoting_style): Remove function by merging it...
(Ftext_quoting_style): ...here.  Rename from Fget_quoting_style.
(syms_of_doc): Update defsubr for Ftext_quoting_style.
* src/lisp.h (enum text_quoting_style): Remove enum.
* src/doprnt.c (doprnt):
* src/editfns.c (styled_format):
* lisp/help.el (substitute-command-keys): Update callers to use
text-quoting-style.

* lisp/disp-table.el (make-glyph-code): Remove obsolete comment.