Fix initialization of `state`.
Special-case `qw(...)` because we do want to indent its contents.

* src/floatfns.c (double_integer_scale): Distinguish Inf from NaN.
(rounding_driver): Handle (ceil 0 0.0) and (ceil 0 1.0e+INF).
* test/src/floatfns-tests.el (special-round): Add tests for
weird cases like this.

Avoid crash with (floor 0 0.0)
* src/floatfns.c (rounding_driver): Signal an arithmetic
error if divisor is 0.0 or -0.0, instead of crashing.

Problem reported by Paul Pogonyshev (Bug#38191).
* src/editfns.c (styled_format): When checking for adjacent
%-sequences, use byte position rather than character position.
* test/src/editfns-tests.el (format-properties): Test for fix.

* lisp/so-long.el (so-long-invisible-buffer-function): New user option.
(so-long--set-auto-mode): Use so-long-invisible-buffer-function.
(so-long-deferred): New function/value for so-long-invisible-buffer-function.
(so-long, so-long--disable): Support for so-long-deferred.

* test/lisp/so-long-tests/autoload-longlines-mode-tests.el
* test/lisp/so-long-tests/autoload-major-mode-tests.el
* test/lisp/so-long-tests/autoload-minor-mode-tests.el
* test/lisp/so-long-tests/so-long-tests.el:
Support for so-long-deferred.

Pre-existing tests have been updated to ensure the buffer is already
displayed in cases where a call to `normal-mode' is the (potential)
trigger for `so-long'.

* lisp/so-long.el: Documentation fixes.  For the purposes of
consistency, this reverts some of the changes made in commit
41ba8231ef072571e1a6feabc15d113e5cf57556, including one which
had introduced inconsistent spelling.

ispell configuration and LocalWords have been added such that
`ispell-buffer' should find no misspellings for this library.

* test/lisp/so-long-tests/spelling-tests.el (so-long-spelling):
New test to check the spelling using `ispell-buffer'.

* time-stamp.el (time-stamp-string-preprocess): Change new format for
numeric time zone from %:z to %5z to match format-time-string better.
(time-stamp-format): Document support for numeric time zone.
See discussion in bug#32931.

* NEWS: Mention time-stamp-format %5z.

This is doable now that we have bignums.
* src/floatfns.c (integer_value): Remove; no longer used.
(rescale_for_division): New function.
(rounding_driver): Use it to divide properly (by using bignums)
even when arguments are float, fixing a double-rounding FIXME.
* src/lisp.h (LOG2_FLT_RADIX): Move here ...
* src/timefns.c (frac_to_double): ... from here.
* test/src/floatfns-tests.el (big-round):
Add a test to catch the double-rounding bug.

* lisp/net/tramp.el (tramp-backup-directory-alist)
(tramp-echoed-echo-mark-regexp, tramp-syntax-values)
(tramp-lookup-syntax, tramp-build-prefix-format)
(tramp-build-prefix-regexp, tramp-build-method-regexp)
(tramp-build-postfix-method-format)
(tramp-build-postfix-method-regexp)
(tramp-build-prefix-ipv6-format, tramp-build-prefix-ipv6-regexp)
(tramp-build-postfix-ipv6-format)
(tramp-build-postfix-ipv6-regexp)
(tramp-build-postfix-host-format)
(tramp-build-postfix-host-regexp, tramp-unknown-id-string)
(tramp-unknown-id-integer, tramp-build-file-name-regexp)
(tramp-build-completion-file-name-regexp, tramp-chunksize)
(tramp-find-method, tramp-find-user, tramp-find-host)
(tramp-dissect-file-name, tramp-get-buffer)
(tramp-get-connection-buffer, tramp-debug-message, tramp-error)
(with-tramp-connection-property, tramp-run-real-handler)
(tramp-file-name-for-operation, tramp-file-name-handler)
(tramp-completion-file-name-handler)
(tramp-completion-handle-file-name-completion)
(tramp-completion-dissect-file-name)
(tramp-completion-dissect-file-name1)
(tramp-handle-file-name-as-directory)
(tramp-handle-file-name-directory)
(tramp-handle-file-name-nondirectory, tramp-mode-string-to-int)
(tramp-file-mode-from-int):
* lisp/net/tramp-adb.el (tramp-adb-file-name-p):
* lisp/net/tramp-archive.el (tramp-archive-run-real-handler)
(tramp-archive-file-name-handler)
(tramp-archive-dissect-file-name)
(with-parsed-tramp-archive-file-name)
(tramp-archive-gvfs-file-name, tramp-archive-handle-access-file):
* lisp/net/tramp-cmds.el (tramp-list-remote-buffers):
* lisp/net/tramp-compat.el (tramp-unload-file-name-handlers)
(tramp-compat-funcall, tramp-compat-tramp-file-name-slots):
* lisp/net/tramp-ftp.el (tramp-ftp-file-name-handler)
(tramp-ftp-file-name-p):
* lisp/net/tramp-gvfs.el (tramp-gvfs-file-name-p)
(tramp-gvfs-file-name-handler)
(tramp-gvfs-stringify-dbus-message)
(tramp-gvfs-monitor-process-filter)
(tramp-gvfs-handler-mounted-unmounted):
* lisp/net/tramp-integration.el
(tramp-rfn-eshadow-update-overlay-regexp):
* lisp/net/tramp-rclone.el (tramp-rclone-file-name-p)
(tramp-rclone-file-name-handler, tramp-rclone-send-command):
* lisp/net/tramp-sh.el (tramp-sh--quoting-style-options)
(tramp-sh-gio-monitor-process-filter)
(tramp-sh-gvfs-monitor-dir-process-filter)
(tramp-sh-inotifywait-process-filter, tramp-find-executable)
(tramp-set-remote-path, tramp-open-shell, tramp-find-shell)
(tramp-send-command-and-check, tramp-shell-case-fold)
(tramp-get-remote-path):
* lisp/net/tramp-smb.el (tramp-smb-file-name-p)
(tramp-smb-file-name-handler)
(tramp-smb-do-file-attributes-with-stat)
(tramp-smb-handle-substitute-in-file-name)
(tramp-smb-get-stat-capability, tramp-smb-shell-quote-argument):
* lisp/net/tramp-sudoedit.el (tramp-sudoedit-file-name-p)
(tramp-sudoedit-file-name-handler)
(tramp-sudoedit-send-command-string):
* test/lisp/net/tramp-archive-tests.el (tramp-archive-test-all):
* test/lisp/net/tramp-tests.el (tramp--test-gvfs-p)
(tramp--test-with-proper-process-name-and-buffer)
(tramp-test-all): Adapt docstrings according to `checkdoc'.

* test/src/doc-tests.el (doc-test-substitute-command-keys):
Disable component that fails twice in the past 5 weeks
due to changes in the minibuffer map.