4.7 What is different about Emacs 26?
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Emacs now provides a limited form of concurrency with Lisp threads.
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Emacs now supports
systemd. The new command-line option
--fg-daemon is part of this support, it causes Emacs to run
in the foreground instead of forking, as under --daemon.
- Emacs now supports 24-bit true color on text terminals which provide
that feature. See How do I get colors and syntax highlighting on a TTY?.
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Emacs on X now supports double-buffering, which eliminates display
flickering in most situations.
- You can now scroll the Emacs display horizontally using the mouse or
touchpad.
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Emacs display now includes an optional feature for display of line
numbers via the
display-line-numbers-mode command. This
feature is much faster than the equivalent display offered by packages
such as linum, and also provides many optional features like
relative line numbers.
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The automatic horizontal scrolling of the window display when lines
are truncated can now optionally be enabled only for the current line,
the line where Emacs shows the cursor. Under this mode, all the other
window lines are not scrolled to show characters outside of the
viewport.
- Letter-case conversions now honor special cases in Turkish and Greek
scripts.
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Support for Enchant is now part of the Emacs spell-checking commands.
- Tramp now supports Google Drive filesystems.
- Emacs can now be built while omitting the details of the machine on
which it was built, thus making it easier to produce reproducible
builds.
- Security vulnerability related to Enriched Text mode is removed.
Enriched mode previously allowed saving
display properties as
part of text; those properties support evaluating arbitrary Lisp code,
which opens a vulnerability for Emacs users receiving Enriched Text
from external sources. Execution of arbitrary Lisp forms in
display properties decoded by Enriched Text mode is now
disabled by default.
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Emacs 26.2 comes with data files imported from the latest Unicode
Standard version 11.0.0.
Consult the Emacs NEWS.26 file for the full list of changes in
Emacs 26.