What's new in Emacs 30?

I.e. copying text to and from Emacs is faster and less likely to freeze the program even when large portions of text are being copied.

This means it should be less necessary to disable the likes of 'select-active-regions' when Emacs is running over a slow network connection. The variable `select-active-regions' allows one to automatically copy between Emacs and other applications.

This controls whether or not file data is synchronized to the disk immediately when writing a region to a file. It improves the speed of saving large files. Downside: Could result in data loss.

e.g. 'remote-file-name-inhibit-delete-by-moving-to-trash'.

With this new option, Emacs allows users to decide whether remote files should be moved to the local trash or deleted outright

This allows the user to customize the 'yes-or-no' prompt.

This is used for displaying the time and date components of 'display-time-mode', a minor mode in Emacs that, when enabled, displays the current time (and optionally the date) in the mode line.

  (display-time-mode 1)

(custom-set-faces
 '(display-time-date-and-time ((t (:foreground "white")))))

Several symbolic icons are added to "etc/images/symbols", including
plus, minus, check-mark, start, etc.

[[c:/emacs/emacs/etc/images/symbols]]

M-x tool-bar-mode
(set-frame-parameter nil 'tool-bar-position 'bottom)

Useful with data, debugging, or developing.

You can expand the "…" symbol truncation everywhere.

The code that allowed "…" to be expanded in the "Backtrace" buffer
should now work anywhere the data is generated by 'cl-print'.

Anything following the symbol 'mode-line-format-right-align' in
'mode-line-format' will be right-aligned.

The primary benefit of this improvement is a smoother and more intuitive typing experience for users who need to use complex input methods, such as those required for many Asian languages

A convenient function that allows you to kill buffers matching a pattern without providing confirmation.

Provides a way to change the display format of Grep results, with the output from Grep organized into sections, with each file having its own section, rather than prefixing each line with the filename.

Once the aliases have been reloaded, any new or changed alias definitions will be available immediately in Eshell sessions

Running 'rgrep' in Eshell now uses the Emacs grep facility instead of calling external grep obviating the need to install grep. This only works in eshell not in shell or ansi-term.

This command either fills a single paragraph in a defun, such as a
docstring, or a comment, or (re)indents the surrounding defun if point
is not in a comment or a string. It is by default bound to 'M-q' in
'prog-mode' and all its descendants.

[[c:/Files/e/Elements/prog-fill-reindent-defun.py]]

The 'modus-operandi' and 'modus-vivendi' are the main themes that have
been part of Emacs since version 28. The former is light, the latter
dark. In addition to these, we now have 'modus-operandi-tinted' and
'modus-vivendi-tinted' for easier legibility, as well as
'modus-operandi-deuteranopia', 'modus-vivendi-deuteranopia',
'modus-operandi-tritanopia', and 'modus-vivendi-tritanopia' to cover
the needs of users with red-green or blue-yellow color deficiency.

Several new warnings have been introduced.

https://github.com/emacs-mirror/emacs/blob/master/etc/NEWS

(setq native-comp-async-report-warnings-errors nil)

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