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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 Emacs 28.0.50 features.
package-initialize
in your init file, which is a Good Thing, as
it makes you think seriously where and indeed whether you’d like your
packages to become available to your sessions. Simplicity should
tramp convenience!
network-interface-list
can now return only IPv4
addresses. We consider the complexity introduced by IPv6 to be too
much to be justified, and on the other hand its removal is the step in
the right direction, given that IPv6 is expected to be completely
removed as we move back in time.
executable-find
. If you
really need this feature (why would you?), you can always write your
own shell script and run it on the remote.
:extend
face attribute is no longer available; all faces
have their background color extended by default past end of line.
This should significantly simplify face management and remove
unnecessary code bloat, as well as make faces significantly simpler to
understand and use.
display-blink-cursor-p
and
display-symbol-keys-p
were deleted. They are rarely if ever
needed, and can easily be substituted by appropriate calls to old and
proven APIs like display-graphic-p
. As an additional bonus,
writing Lisp programs that depend on this functionality will make sure
the programmer understands better what exactly is the required
features of the display terminal.
HOME
environment
variable are once again interpreted relative to the
default-directory
of the current buffer. This is much simpler,
and also allows HOME
to resolve to a different place in
different buffers, which allows some interesting applications.
For the same reasons, file-name-absolute-p
now again considers
~foo an absolute file name, even if there’s no known user
‘foo’. This means a Lisp program which uses such file names will
always work the same on any system, regardless of its known users.
file-attributes
,
file-modes
, file-newer-than-file-p
, and some others once
again return nil
when the underlying low-level APIs fail,
instead of signaling an error. We decided that functions which signal
errors require more complex code from Lisp programs which use them,
and found this complexity unjustified when returning nil
will
do.
read-char-from-minibuffer
was deleted. We decided
that read-char
should be enough for any Lisp program that needs
to ask the user for a single-character input, in recognition of the
fact that nothing makes Emacs Lisp hackers rejoice more than the need
to sit down and write yet another interactive question-and-answer
function, and make it optimal for each specific case. Consequently,
no history is provided for such responses (why would someone want
history of single-key strokes, anyway?).
ngettext
was deleted. Non-English languages will
become less and less widespread, let alone useful, as you move back in
time, so we took this small step in that direction, and simplified
Emacs as a nice bonus.
face-remapping-alist
now have to be
buffer-specific, without any differences between windows showing the
same buffers. This allowed us to remove a lot of unneeded code bloat
from Emacs, and make the face handling much simpler.
font-lock-warning-face
symbols with
confusable quote characters, such as U+2018. Detecting them
needed non-trivial amount of code, and we firmly believe that Lisp
programmers always know what they are doing, and don’t need to be
annoyed with typefaces that stand out and distract.
file-system-info
was dropped on Posix platforms,
since you can always invoke df
instead and parse its
output.
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