* doc/emacs/frames.texi (Mouse Commands): More detailed
description of how tilting the mouse-wheel works.
* lisp/mwheel.el (mouse-wheel-tilt-scroll)
(mouse-wheel-flip-direction): Fix the wording of doc strings.
(Bug#39979)
* lisp/tab-bar.el (tab-bar-mode): Check for non-nil
tab-bar-new-button and tab-bar-close-button.
(tab-bar-new-button-show): New defcustom.
(tab-bar-make-keymap-1): Check for tab-bar-new-button-show.
(tab-bar-separator): Add docstring.
Don't re-use an existing `pending-undo-list` even if (eq last-command 'undo)
since there might have been changes to the buffer since that `undo` command
and the `pending-undo-list` can hence be invalid for the current
buffer contents.
Fixes (Bug#39761) by making cl-extra dependent on seq rather than
vice versa.
* lisp/emacs-lisp/seq.el (seq-concatenate): Move cl-concatenate's
code here instead of calling it.
* lisp/emacs-lisp/cl-extra.el (cl-concatenate): Use cl-concatenate.
Copyright-paperwork-exempt: yes
* doc/emacs/macos.texi (Mac / GNUstep Customization): Document some
more of the ns- variables and remove incorrect font back-end
information.
* etc/NEWS: Update the documentation status of macOS news entries.
* lisp/minibuffer.el (minibuffer--require-match): New variable.
(completing-read-default): Bind it to the REQUIRE-MATCH value.
(minibuffer-force-complete-and-exit): Consult it to allow input
with no matches when a match is not required (bug#38992).
* lisp/icomplete.el (icomplete-exhibit): Use it to render the
correct parens around matches.
* doc/lispref/variables.texi (Using Lexical Binding): Document
that lexical-binding is now turned on by default in more cases.
* etc/NEWS: Fix wording of the NEWS entry about the above, and mark it
as fully documented.
* lisp/erc/erc.el (erc-official-location): As part of bringing ERC
under the Emacs umbrella, erc-discuss has been renamed to emacs-erc,
and will be *the* mailing list for discussions and announcements about
ERC going forward. The other two lists, erc-announce and erc-commit,
are now retired. For more details, see the announcement at
<https://lists.gnu.org/archive/html/emacs-erc/2020-03/msg00001.html>.
* lisp/textmodes/table.el (table-generate-source): Doc fix.
(Bug#39935)
* etc/NEWS: Fix wording of the 'table-generate-source' entry and
mark it as documented.
* src/fontset.c (reorder_font_vector): Skip nil entries in the
loop that assigns scores to rfont_def's.
(fontset_compare_rfontdef): Cope with nil. This has the effect of
moving any nil entries to the end of the font-group, and avoids
crashing if an element other than the last in the font-group is
nil. (Bug#39892)
The ? and ?? rx operators are special in that they can be written as
characters (space and '?' respectively). This confused the definition
look-up mechanism in rare cases.
* lisp/emacs-lisp/rx.el (rx--expand-def): Don't look up non-symbols.
* test/lisp/emacs-lisp/rx-tests.el (rx-charset-or): Test.
The bug involved failing to set c-new-END correctly, which lead to an
args-out-of-range error when after-change-functions was invoked twice without
an intervening invocation of before-change-functions.
* lisp/progmodes/cc-mode.el (c-after-change): Correct a coding error in the
handling of c-just-done-before-change.
