159 lines
6.9 KiB
Text
159 lines
6.9 KiB
Text
@c -*- coding: utf-8 -*-
|
|
@c This is part of the Emacs manual.
|
|
@c Copyright (C) 2005--2020 Free Software Foundation, Inc.
|
|
@c See file emacs.texi for copying conditions.
|
|
|
|
@node Antinews
|
|
@appendix Emacs 26 Antinews
|
|
@c Update the emacs.texi Antinews menu entry with the above version number.
|
|
|
|
For those users who live backwards in time, here is information
|
|
about downgrading to Emacs version 26.3. We hope you will enjoy the
|
|
greater simplicity that results from the absence of many @w{Emacs
|
|
@value{EMACSVER}} features.
|
|
|
|
@itemize @bullet
|
|
@item
|
|
Emacs no longer uses @acronym{GMP}, the GNU Multiple Precision
|
|
library, and doesn't support Lisp integers greater than
|
|
@code{most-positive-fixnum} or smaller than
|
|
@code{most-negative-fixnum}. We now have only one kind of a Lisp
|
|
integer. This simplifies many Lisp programs that use integers, and
|
|
makes integer calculations always fast. If you want larger values,
|
|
use Lisp floats, as Emacs has done since day one.
|
|
|
|
@item
|
|
Emacs no longer supports HarfBuzz as the engine for shaping complex
|
|
text. As you move back in time, we will gradually shed off all traces
|
|
of support for complex text shaping, and this is one step in that
|
|
direction.
|
|
|
|
@item
|
|
We have removed support for building with the Jansson library, and
|
|
consequently the native support for JSON parsing is gone. The
|
|
importance of JSON decreases as we go back in time, so for now using
|
|
the Lisp code for handling it should be good enough; in one of the
|
|
past Emacs versions, we intend to remove even that, as useless bloat.
|
|
|
|
The library for supporting JSONRPC applications was removed for the
|
|
same reason.
|
|
|
|
@item
|
|
The ``portable dumper'' feature is gone. We are once again using the
|
|
field-proven ``unexec'' way of dumping Emacs. With that, the hope for
|
|
being able to re-dump your customized Emacs session is also gone: why
|
|
would anyone want to record their random customization experiments on
|
|
disk, and restore them the next time they start Emacs? And true
|
|
Emacsers don't restart their Emacs sessions anyway.
|
|
|
|
@item
|
|
We dropped the support for @acronym{XDG}-style configuration
|
|
directories and the @env{XDG_CONFIG_HOME} environment variable.
|
|
There's once again only one place where Emacs looks for its init
|
|
files: the @file{~/.emacs.d} directory, with the @file{~/.emacs} file
|
|
as fallback. We think this will go a long way towards preventing
|
|
confusion among users who for some reason have @env{XDG_CONFIG_HOME}
|
|
set, thus risking to have their init files randomly spread between two
|
|
places. In one of the past Emacs versions, we intend to further
|
|
simplify this, removing the @file{~/.emacs.d} place and leaving only
|
|
@file{~/.emacs}; stay tuned.
|
|
|
|
For similar reasons, we've removed the ``early init'' file. You can
|
|
now again use all the tricks you want to initialize variables like
|
|
@code{package-user-dir} and @code{package-load-list} just in time for
|
|
the packages to load.
|
|
|
|
@command{emacsclient} no longer supports @acronym{XDG}-style directory
|
|
trees, either.
|
|
|
|
@item
|
|
TLS connections are back to their lenient security settings. We
|
|
decided that too tight security settings are an annoyance for users,
|
|
and make little sense considering the world-wide tendency to have
|
|
fewer and fewer network security problems as we move back in time
|
|
(those issues will be completely gone when networks disappear in some
|
|
distant past).
|
|
|
|
@item
|
|
The @code{server-after-make-frame-hook} hook was deleted, in
|
|
preparation for removing the entire daemon business in some past Emacs
|
|
version. You will be glad to learn that setting up the GUI
|
|
customizations of your sessions is now once again as easy as it ever
|
|
was, with just the @code{after-make-frame-functions} to use.
|
|
|
|
@item
|
|
The @code{flex} completion style was removed. We feel that it
|
|
unnecessarily complicates the Emacs user experience, and therefore
|
|
will continue to remove other tricky completion styles, until in some
|
|
past Emacs version we get to a single original style Emacs pioneered
|
|
decades ago. Long live simplicity; down with complications!
|
|
|
|
@item
|
|
The optional display of the fill-column indicator is no longer
|
|
supported. With the display sizes becoming smaller and smaller as you
|
|
move back in time, we feel that the display itself will always show
|
|
you where to fill or wrap your text, and do this much more easily and
|
|
reliably than any such display indicator.
|
|
|
|
@item
|
|
We removed the features that made visiting large files easier. Thus,
|
|
Emacs will no longer suggest visiting a large file literally, nor
|
|
offer the @code{so-long} mode to deal with overly-long lines. We
|
|
decided that this simplification is worthwhile, given that the general
|
|
tendency of having very large files is becoming a rarity as we move
|
|
back in time.
|
|
|
|
@item
|
|
We have removed the feature that displayed echo-area messages without
|
|
hiding content of the active minibuffer. This should prevent user
|
|
confusion from having two unrelated pieces of text staring at them,
|
|
with no clear separation between them. Users with good memories (and
|
|
Emacs users are all expected to be of that kind) will have no trouble
|
|
keeping the minibuffer text in their minds, and typing the responses
|
|
without actually seeing the prompts.
|
|
|
|
@item
|
|
Horizontal scrolling using the mouse or touchpad has been removed. In
|
|
the past, wide monitors will become less popular, so horizontal
|
|
scrolling will no longer be needed. Removal of the mouse support for
|
|
horizontal scrolling is the first step towards its complete removal in
|
|
prior Emacs versions.
|
|
|
|
@item
|
|
The @code{main-thread} variable and @code{list-threads} were removed,
|
|
and @code{thread-join} no longer returns the result of the finished
|
|
thread. We intend to remove the support for Lisp threads in some past
|
|
Emacs version, so we continue removing the associated complexities and
|
|
features as we go back in time.
|
|
|
|
@item
|
|
Tab bar and window tab-lines were removed. This should make the Emacs
|
|
display simpler and less cluttered, and help those users who disable
|
|
menu bar and tool bar in their GUI sessions. The fashion to provide
|
|
tabs in every GUI application out there is gaining less and less
|
|
popularity as we move back in time, and will completely disappear at
|
|
some past point; removing the tabs from Emacs is the step in that
|
|
direction.
|
|
|
|
@item
|
|
Displaying line numbers for a buffer is only possibly using add-on
|
|
features, such as @code{linum-mode}, which can only display the
|
|
numbers in the display margins. Line-number display using these
|
|
features is also slow, as we firmly believe such a feature is
|
|
un-Emacsy and should not have been included in Emacs to begin with.
|
|
Consequently, @code{display-line-numbers-mode} was removed.
|
|
|
|
@item
|
|
On our permanent quest for simplifying Emacs, we've removed the
|
|
support for changing the font size by turning the mouse wheel.
|
|
|
|
@item
|
|
Several commands, deemed to be unnecessary complications, have been
|
|
removed. Examples include @code{make-empty-file},
|
|
@code{font-lock-refontify}, @code{xref-find-definitions-at-mouse},
|
|
@code{make-frame-on-monitor}, and @code{diff-buffers}.
|
|
|
|
@item
|
|
To keep up with decreasing computer memory capacity and disk space, many
|
|
other functions and files have been eliminated in Emacs 26.3.
|
|
@end itemize
|