170 lines
7.3 KiB
Text
170 lines
7.3 KiB
Text
@c -*- coding: utf-8 -*-
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@c This is part of the Emacs manual.
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@c Copyright (C) 2005-2019 Free Software Foundation, Inc.
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@c See file emacs.texi for copying conditions.
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@node Antinews
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@appendix Emacs 25 Antinews
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@c Update the emacs.texi Antinews menu entry with the above version number.
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For those users who live backwards in time, here is information
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about downgrading to Emacs version 25.3. We hope you will enjoy the
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greater simplicity that results from the absence of many @w{Emacs
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@value{EMACSVER}} features.
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@itemize @bullet
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@item
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Emacs no longer defaults to requiring the GnuTLS library when you
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build it. Those who want the TLS functionality built-in will have to
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explicitly request it at build time---or forever hold their peace. We
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decided that having the TLS functionality doesn't justify annoying
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users or package builders with error messages about libgnutls absence.
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We also decided that if you do build with GnuTLS, we will allow
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versions of the library older than 2.12.2, as that version will become
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less and less available/popular as you move farther back in time.
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@item
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For similar reasons, we've reverted back to building our own version
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of @command{movemail} that retrieves POP3 mail as clear text via
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insecure channels. As you move back in time, the availability of
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secure alternatives to POP3 will diminish, and we are only keen to
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support that. We've also removed the @option{--with-mailutils}
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configure-time option, as it no longer makes sense for the observable
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past.
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@item
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We have removed support for @command{systemd} and similar services: we
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no longer provide a user init file for enabling Emacs support via
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those services, and we removed from the Emacs server the
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socket-launching support important for Emacs client operation under
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these services. Again, these services will lose popularity as you
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move back in time, so the code supporting them will be just dead code,
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bloating Emacs unnecessarily.
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@item
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Reproducible builds of Emacs are no longer supported, as past
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development will make that unnecessary.
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@item
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The @option{--fg-daemon} is gone, leaving only @option{--daemon}. No
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need to procrastinate on the dilemma whether you do or do not want the
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new shiny ``headless Emacs'' thingy. Hail, simplicity!
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@item
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As text terminals supporting true color will lose ground as you move
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back in time, we've removed support for 24-bit colors on text
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terminals. If you want colors on a text terminal, you should be fine
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with just 8 of them. (Truth being told, we think text terminals
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should be monochrome, but you will have to keep downgrading to older
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Emacs versions to have that feature back.)
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@item
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Emacs 25.3 no longer supports magic signatures of the form
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@samp{#!/usr/bin/env @var{interpreter}} in scripts. Moving back in
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time means you are getting closer to the ideal of the original Unix
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design where all the interpreters lived in a single directory
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@file{/bin}, so this fancy feature is simply becoming unnecessary
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ballast.
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@item
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The double-buffering feature of Emacs display on X has been removed.
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We decided that its complexity and a few random surprising
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side-effects aren't justified by the gains, even though those gains
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were hailed in some quarters. Yes, Emacs 25.3 will flicker in some
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use cases, but we are sure Emacs users will be able to suck it, as
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they have been doing for years. Since this feature is gone, we've
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also removed the @code{inhibit-double-buffering} frame parameter,
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which is now unnecessary.
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@item
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Non-breaking hyphens and ASCII characters displayed instead of
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unsupported quote characters are now again displayed using the
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@code{escape-glyph} face. We think having a single face instead of 3
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different ones will make Emacs customization a much simpler job for
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users. For the same reason, we've removed the
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@code{header-line-highlight} face, leaving just @code{highlight} for
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any element of the Emacs display besides the mode line.
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@item
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You can no longer disable attempts of recovery from fatal exceptions
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such as C stack overflows and fatal signals. Since the recovery
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included in Emacs is reliable enough, we decided there was no reason
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to put your edits in danger of becoming lost when these situations
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happen. The variables @code{attempt-stack-overflow-recovery} and
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@code{attempt-orderly-shutdown-on-fatal-signal} are therefore removed.
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@item
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The @code{list-timers} command was removed, as we decided timers are
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not a user-level feature, and therefore users should not be allowed to
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mess with them. Ask an Emacs Lisp guru near you for help if you have
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a runaway timer in your session. (Of course, as you move back in
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time, such runaway timers will become less and less frequent, and
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actually timers might start shutting down automatically, as they
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cannot cope with time reversal.)
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@item
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Horizontal scrolling using the mouse or touchpad has been removed. In
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the past, wide monitors will become less popular, so horizontal
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scrolling will no longer be needed. Removal of the mouse support for
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horizontal scrolling is the first step towards its complete removal in
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prior Emacs versions.
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@item
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We have found the @option{--tramp} option of @command{emacsclient} too
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risky and too complicated, so we removed it to simplify the client
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code and its usage.
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@item
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The @code{display-raw-bytes-as-hex} variable is gone, so raw bytes can
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only be displayed as octal escapes. Emacs users should be able to
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convert from octal to any other base in their sleep!
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@item
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Displaying line numbers for a buffer is only possibly using add-on
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features, such as @code{linum-mode}, which can only display the
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numbers in the display margins. Line-number display using these
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features is also slow, as we firmly believe such a feature is
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un-Emacsy and should not have been included in Emacs to begin with.
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Consequently, @code{display-line-numbers-mode} was removed.
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@item
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On our permanent quest for simplifying Emacs, we've removed the
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support for passing command-line arguments and options to Emacs via
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the @option{--alternate-editor} option of @command{emacsclient} and
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@env{ALTERNATE_EDITOR} environment variable. There's only one True
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Emacs---the one that comes up when invoked as @kbd{emacs}, no need for
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all those fancy options!
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@item
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The complication known as ``single-line horizontal scrolling'' is no
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longer with you in Emacs 25.3. This feature was a bow to ``other
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editors''; instead, let those other editors bow to Emacs by hscrolling
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the entire window at all times. Repeat after me: ``The Emacs way is
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the Only Way!''
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@item
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The fancy case conversions of non-ASCII characters used in several
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locales, like Turkish and Greek, are removed, leaving the relations
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between upper and lower letter-case simple again, as they were in
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7-bit ASCII. Likewise with ligatures that turn into multiple
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characters when their letter-case changes---gone.
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@item
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Enchant is no longer supported by @code{ispell-buffer} and similar
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spell-checking commands. As Enchant will gradually disappear while
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you move back in time, its support will become unnecessary anyway.
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@item
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Tramp lost its support for Google Drive repositories. Cloud storage
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is on its way to extinction as you move back in time, thus making this
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feature redundant.
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@item
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Several commands, deemed to be unnecessary complications, have been
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removed. Examples include @code{replace-buffer-contents} and
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@code{apropos-local-variable}.
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@item
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To keep up with decreasing computer memory capacity and disk space, many
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other functions and files have been eliminated in Emacs 25.3.
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@end itemize
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