Also optimize a loop over several line doc-comments.
* lisp/progmodes/cc-fonts.el (c-font-lock-doc-comments): New variable
comment-mid, used as the starting point for applying c-doc-face-name in a
line comments. In block comments, apply this face not from `comment-beg' but
from `region-beg', no earlier than the start of the fontification region.
* lisp/erc/erc-stamp.el (erc-insert-timestamp-right): Use latest
buffer's window's width to position the timestamp, if both
`erc-timestamp-right-column' and `erc-fill-column' are not set (or
`erc-fill-mode' is off). This is what the documentation says, but was
not implemented. Also fix the bug of using selected window's width
instead of the (or some) window showing the buffer. The latest
window's width is saved in `erc-timestamp-last-window-width' and used
when the buffer is no more shown. In case the buffer was never shown,
which I'm not sure can happen, either use `fill-column' if set, or
give up on aligning and just output the timestamp (modulo the kludge)
right after message text. While here, fix the off by one calculation
of point start when the reference is the window's width.
* lisp/erc/erc-ibuffer.el (erc-modified): Don't use `length' on dotted
lists (and not even to test if there is more than one element, for
that matter). Use `cdr' instead.
* doc/emacs/book-spine.texi: New file: the printed book spine.
* doc/emacs/back.texi: New file: the backcover text for the
printed book.
* doc/emacs/emacs.texi: Update ISBN.
* lisp/progmodes/cc-langs.el (c-<>-arglist-kwds): Add const_cast,
dynamic_cast, reinterpret_cast and static_cast into this lang const.
* lisp/progmodes/cc-engine.el (c-clear-<-pair-props, c-clear->-pair-props)
(c-clear-<-pair-props-if-match-after, c-clear->-pair-props-if-match-before)
(c-forward-<>-arglist-recur):
Invalidate caches with c-trunctate-lit-pos-cache.
(c-forward-<>-arglist-recur): If in a matching <...> expression, the < has a
syntax-table property, but the > not, remove that property.
This was mistakenly applied to NEWS.27 on the master branch in
2021-05-09 "; Fix decoded-time-set-defaults typo in NEWS.27."
but that has now been reverted (bug#48298).
* src/w32common.h: Rename OS_* to OS_SUBTYPE__*, as w32 API
headers started defining OS_NT, which breaks the use of the
enumeration. All users changed. (Bug#48303)
The code for this is the symbol 'n', which is usually spelled as '\n'
here, not the character ?\n.
* doc/misc/autotype.texi (Skeleton Language): Fix item for
newline-and-indent.
* admin/make-tarball.txt (UPDATING THE EMACS WEB PAGES AFTER A
RELEASE): Update and enhance the section to make it easier to find
the banner and verify the updated pages are in place.
* doc/emacs/text.texi (Auto Fill, Fill Commands): Mention special
line-breaking rules for CJK characters and the kinsoku rules.
(Bug#47856)
* lisp/textmodes/fill.el
(fill-separate-heterogeneous-words-with-space): Doc fix.
