Buffers `*Shell Command Output*' and `*Async Shell Command*'
have been around since a long time; used across several libraries,
they are de facto output buffers for shell commands.
* lisp/simple.el (shell-command-buffer-name)
(shell-command-buffer-name-async): New variables.
* lisp/dired-aux.el
* lisp/gnus/gnus-sum.el
* lisp/gnus/gnus-win.el
* lisp/ibuf-ext.el
* lisp/net/tramp.el: Use them.
* etc/NEWS (Changes in Emacs 28.1): Announce this change.
* doc/emacs/misc.texi (Single Shell)
* doc/misc/tramp.texi (Remote processes):
Update manual (bug#39138).
* lisp/whitespace.el (whitespace-missing-newline-at-eof): Change
the colours to not be as angry.
(whitespace-color-on): Don't mark the end of the buffer if point
is there.
* lisp/buff-menu.el (Buffer-menu--dynamic-name-width): New
function (bug#30692).
(Buffer-menu-name-width): Default to using it.
(list-buffers--refresh): Call it.
* lisp/emacs-lisp/seq.el (seq-max): Add autoload cookie.
* lisp/net/browse-url.el: Turn on lexical-binding.
(browse-url--mailto, browse-url--man, browse-url--browser): Use
imperative form in docstrings.
(browse-url-delete-temp-file): Turn comment into a proper docstring.
* test/lisp/net/browse-url-tests.el: New file with tests for
browse-url.el.
* lisp/net/browse-url.el (browse-url-mosaic-program)
(browse-url-mosaic-arguments, browse-url-mosaic-pidfile)
(browse-url-CCI-port, browse-url-CCI-host)
(browse-url-default-browser, browse-url-mosaic, browse-url-cci):
Remove support for the Mosaic browser, which saw its last release in
1997, or 23 years ago.
* etc/NEWS: Announce its removal.
* lisp/help-fns.el (describe-widget-functions): New variable, used by
describe-widget.
(describe-widget): New command, to display information about a widget.
* lisp/button.el (button-describe): New command, for describing a button.
(button--describe): Helper function for button-describe.
* lisp/wid-edit.el (widget-describe): New command, for describing a
widget.
(widget--resolve-parent-action): Helper function, to allow
widget-describe to display more useful information (bug#139).
* lisp/arc-mode.el (archive-copy-file): New command, keystroke and
menu bar entry (bug#26192).
(archive-extract): Refactored out code from here...
(archive--extract-file): ... to here for use in archive-copy-file.
* lisp/thingatpt.el (thing-at-point-bounds-of-url-at-point): Don't
include trailing ' in the URL, because it's more likely to be a
punctuation character (bug#29410).
* lisp/emacs-lisp/byte-opt.el (byte-optimize-associative-math)
(byte-optimize-min-max): Transform 3-arg min/max call into two 2-arg
calls, which is faster.
* lisp/emacs-lisp/bytecomp.el (byte-compile-associative): Rename to...
(byte-compile-variadic-numeric): ...this function and simplify,
fixing incorrect comments. The 3-arg strength reduction is now
always done in the optimisers and is no longer needed here.
(byte-compile-min-max): New function.
(byte-compile-minus): Simplify, remove incorrect comment, and use
byte-compile-variadic-numeric.
(byte-compile-quo): Simplify and fix comment.
* lisp/emacs-lisp/bytecomp.el (byte-compile-associative):
Translate numerical identity expressions, such as (+ x) and (* x),
into (* x 1) since the previous translation (+ x 0) gets it wrong
for x = -0.0.
* test/lisp/emacs-lisp/bytecomp-tests.el
(byte-opt-testsuite-arith-data): Add test cases.
* lisp/whitespace.el (whitespace-missing-newline-at-eof): New face
(bug#34952).
(whitespace-report-region): Add a test for
end-of-buffer-without-newline.
(whitespace-color-on): Ditto.
* doc/emacs/display.texi (Useless Whitespace): Document it.
assoc-delete-all is not available for users who have installed
project.el via ELPA on older Emacs versions (bug#42668).
* lisp/progmodes/project.el
(project-remember-project, project--remove-from-project-list):
Replace assoc-delete-all with equivalent alternatives.
* lisp/gnus/mml.el (mml-parse-1): Use `data-encoding' to be
slightly less confusing than `content-transfer-encoding'.
* doc/misc/emacs-mime.texi (MML Definition): Document it.
* lisp/gnus/message.el (message-insert-screenshot): Adjust usage.
* lisp/gnus/message.el (message-get-reply-headers): Change how
Mail-Copies-To: never is handled (bug#37591). When that header is
present, put all the remaining recipients in the To header,
instead of picking an arbitrary recipient to have in the To
header, and the rest in the Cc header.
