* src/w32fns.c (w32_version_string) [WINDOWSNT]: New function.
* src/w32common.h (w32_version_string) [WINDOWSNT]: Add prototype.
* src/editfns.c (init_editfns) [WINDOWSNT]: Produce a non-nil
string with the OS version.
* simple.el (shell-command, shell-command-on-region): Set
revert-buffer-function buffer-locally, not globally. Also, avoid an
unnecessary call to (current-buffer) by taking advantage of the
closure (bug#46151).
* lisp/generic-x.el (generic-mode-ini-file-find-file-hook): Fix my
previous commit; for some reason 'function' produces a warning here
while 'quote' does not.
* lisp/emacs-lisp/bindat.el: Use lexical-binding.
(bindat--unpack-group, bindat--length-group, bindat--pack-group):
Declare `last` and `tag` as dyn-scoped.
(bindat-unpack, bindat-pack): Bind `bindat-raw` and `bindat-idx` via
`let` rather than via the formal arglist.
* lisp/emacs-lisp/package-x.el:
* lisp/emacs-lisp/generic.el:
* lisp/emacs-lisp/eieio-opt.el:
* lisp/emacs-lisp/derived.el:
* lisp/emacs-lisp/crm.el: Use lexical-binding.
* lisp/emacs-lisp/helper.el: Use lexical-binding.
(Helper-help-map): Move initialization into declaration.
* lisp/emacs-lisp/regi.el: Use lexical-binding.
(regi-interpret): Remove unused var `tstart`.
Declare `curframe`, `curentry` and `curline` as dyn-scoped.
* lisp/emacs-lisp/shadow.el: Use lexical-binding.
(load-path-shadows-find): Remove unused var `file`.
Tighten a regexp, use `push`.
* lisp/emacs-lisp/tcover-ses.el: Use lexical-binding. Require `ses`.
Remove correspondingly redundant declarations.
(ses--curcell-overlay): Declare.
(ses-exercise): Use `dlet` and use a properly-prefixed var name.
Fix name of `curcell-overlay` variable.
* lisp/emacs-lisp/unsafep.el: Use lexical-binding.
(unsafep): Bind `unsafep-vars` via `let` rather than via the formal arglist.
This fixes spurious test failures in my environment for
`diff-mode-test-font-lock-syntax-one-line` (where my `diff` otherwise
returns "No newline at end of file" in French) and for
various tests in `emacs-module-tests` because errors signal
"Abandon" instead of "Abort".
* lisp/autorevert.el (auto-revert--buffer-by-watch-descriptor):
Rename from `auto-revert--buffers-by-watch-descriptor'. Make it
an assoc list.
(auto-revert-notify-rm-watch, auto-revert-notify-add-watch)
(auto-revert-notify-handler): Adapt accordingly. Based on a
patch provided by Spencer Baugh <sbaugh@catern.com>. (Bug#44639)
* lisp/progmodes/asm-mode.el: The value of fill-prefix ought to be nil
not "\t" so that fill-context-prefix can do its thing. In fact,
fill-prefix does not have to be set at all becuase asm-mode derives
from prog-mode and fill-prefix is set in simple.el.
* test/lisp/progmodes/asm-mode-tests.el: Add relevant test (bug#41064).
Copyright-paperwork-exempt: yes
* lisp/newcomment.el (comment-region-default-1): Allow commenting
out whitespace-only regions (bug#41793).
* lisp/textmodes/tex-mode.el (latex--comment-region): Use it.
(latex-mode): Set a comment style shim.
* lisp/progmodes/perl-mode.el (perl-imenu-generic-expression):
Remove keywords which are not part of Perl.
(perl-font-lock-keywords-2): Remove keywords which are not part of
Perl (bug#46024). (These keywords are part of Raku; aka. Perl 6.)
