---
** There is a new configure option --with-wide-int.
With it, Emacs integers typically have 62 bits, even on 32-bit machines.
+On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
+to about 2 GiB.
---
** New translation of the Emacs Tutorial in Hebrew is available.
*** Completion can cycle, depending on completion-cycle-threshold.
+++
*** New completion style `substring'.
-
++++
*** Completion style can be set per-category `completion-category-overrides'.
-
++++
*** Completion of buffers now uses substring completion by default.
** Mail changes
---
*** New input methods for Farsi: farsi and farsi-translit.
-** Improved GTK integration
++++
+*** `nobreak-char-display' now also highlights Unicode hyphen chars
+(U+2010 and U+2011).
+** Improved GTK integration
++++
*** GTK scroll-bars are now placed on the right by default.
Use `set-scroll-bar-mode' to change this.
-
++++
*** GTK tool bars can have just text, just images or images and text.
Customize `tool-bar-style' to choose style. On a Gnome desktop, the default
is taken from the desktop settings.
-
+---
*** GTK tool bars can be placed on the left/right or top/bottom of the frame.
The frame-parameter tool-bar-position controls this. It takes the values
top, left, right or bottom. The Options => Show/Hide menu has entries
for this.
-
++++
*** The colors for selected text (the `region' face) are taken from
the GTK theme when Emacs is built with GTK.
-
++++
*** Emacs uses GTK tooltips by default if built with GTK. You can turn that
off by customizing x-gtk-use-system-tooltips.
*** The new functions file-selinux-context and set-file-selinux-context
get and set the SELinux context of a file.
-
+---
*** Tramp offers handlers for file-selinux-context and set-file-selinux-context
for remote machines which support SELinux.
-+++
-** The function format-time-string now supports the %N directive, for
-higher-resolution time stamps.
-
** Changes for exiting Emacs
+++
*** The function kill-emacs is now run upon receipt of the signals
(bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
of buffer at first key-press (instead move to top/bottom of buffer)
when `scroll-error-top-bottom' is non-nil.
-
+++
*** New variable `scroll-error-top-bottom' (see above).
-
++++
*** New scrolling commands `scroll-up-line' and `scroll-down-line'
scroll a line instead of full screen.
-
+++
*** New property `scroll-command' should be set on a command's symbol to
define it as a scroll command affected by `scroll-preserve-screen-position'.
-
+++
*** If you customize `scroll-conservatively' to a value greater than 100,
Emacs will never recenter point in the window when it scrolls due to
cursor motion commands or commands that move point (e.f., `M-g M-g').
Previously, you needed to use `most-positive-fixnum' as the value of
`scroll-conservatively' to achieve the same effect.
-
---
*** ``Aggressive'' scrolling now honors the scroll margins.
If you customize `scroll-up-aggressively' or
adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
`hack-dir-local-variables-non-file-buffer' to support this.
-
+++
*** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
Instead, use "eval: (minor-mode 1)".
+++
*** C-y in Isearch is now bound to isearch-yank-kill, instead of
isearch-yank-line.
----
++++
*** M-y in Isearch is now bound to isearch-yank-pop, instead of
isearch-yank-kill.
+++
*** `count-lines-region' is now an alias for `count-words-region',
bound to M-=, which shows the number of lines, words, and characters.
++++
** The default value of `backup-by-copying-when-mismatch' is now t.
+++
\f
* Changes in Specialized Modes and Packages in Emacs 24.1
++++
** Archive Mode has basic support for browsing and updating 7z archives.
** browse-url has a new variable `browse-url-mailto-function'
*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
** Tramp
-
+---
*** There exists a new inline access method "ksu" (kerberized su).
-
+---
*** The following access methods are discontinued: "ssh1_old",
"ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
-
+---
*** The option `ange-ftp-binary-file-name-regexp' has changed its
default value to "".
*** New command `vc-ediff' allows visual comparison of two revisions
of a file similar to `vc-diff', but using ediff backend.
++++
+*** The option `vc-initial-comment' was removed in Emacs 23.2, but
+this was not advertised at the time.
+
++++
+*** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
+Since Emacs 23, it has done the same thing as `toggle-read-only', but
+this was not advertised at the time.
+
** FIXME: xdg-open for browse-url and reportbug, 2010/08.
** Obsolete modes
\f
* New Modes and Packages in Emacs 24.1
++++
** Occur Edit mode applies edits made in *Occur* buffers to the
original buffers. It is bound to "e" in Occur mode.
** cl.el no longer provides `cl-19'.
+** The menu bar bindings's caches are not used any more.
+Use (where-is-internal <def> nil t) instead.
+
** The following obsolete functions and aliases were removed:
comint-kill-output, decompose-composite-char, outline-visible,
internal-find-face, internal-get-face, frame-update-faces,
of the line.
** Window changes
-
+++
*** Window tree functions are accessible in Elisp.
Functions are provided to return the parent, siblings or child windows
of any window including internal windows (windows not associated with a
buffer) in the window tree.
-
+++
-*** Window manipulation can deal with internal windows.
+**** New function `window-valid-p' gives non-nil for live and internal
+windows.
++++
+**** Window manipulation can deal with internal windows.
Many window handling functions like `split-window', `delete-window', or
`delete-other-windows' as well as the window resizing functions can now
act on any window including internal ones.
-
+++
*** window-total-height/-width vs window-body-height/-width.
The function `window-height' has been renamed to `window-total-height'
and `window-width' has been renamed to `window-body-width'. The old
names are provided as aliases. Two new functions `window-total-width'
and `window-body-height' are provided.
-
+++
*** Window parameters specific to window handling functions.
For each window you can specify a parameter to override the default
behavior of a number of functions like `split-window', `delete-window'
and `delete-other-windows'. The variable `ignore-window-parameters'
allows to ignore processing such parameters.
-
+++
*** New semantics of third argument of `split-window'.
The third argument of `split-window' has been renamed to SIDE and can be
new window appear on the corresponding side of the window that shall be
split. Any other value of SIDE will cause `split-window' to split the
window into two side-by-side windows as before.
-
+++
*** Window resizing functions.
A new standard function for resizing windows called `window-resize' has
been introduced. This and all other functions for resizing windows no
longer delete any windows when they become too small.
-
+++
*** Deleting the selected window now selects the most recently selected
live window on that frame instead.
-
+++
*** `adjust-window-trailing-edge' adjustments.
`adjust-window-trailing-edge' can now deal with fixed-size windows and
edge cannot be shrunk any more. This makes its behavior more similar to
that of Emacs 21 without compromising, however, its inability to delete
windows which was introduced in Emacs 22.
-
+++
*** Window-local buffer lists.
Windows now have local buffer lists. This means that removing a buffer
shown in that window with its previous window-start and window-point
positions. This also means that the same buffer may be automatically
shown twice even if it already appears in another window.
-
+++
*** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
which if non-nil requires the buffer to be displayed in the currently
selected window, signaling an error otherwise. If nil, another window
can be used, e.g. if the selected one is strongly dedicated.
-
++++
*** `split-window-vertically' and `split-window-horizontally' renamed
-to `split-window-above-each-other' and `split-window-side-by-side'
-respectively. The old names are kept as aliases.
-
+to `split-window-below' and `split-window-right' respectively.
+The old names are kept as aliases.
++++
*** Display actions
**** The second arg to `display-buffer' and `pop-to-buffer' is now
*** New variable `completing-read-function' allows overriding the
behavior of `completing-read'.
++++
** `glyphless-char-display' can now distinguish between graphical and
text terminal display, via a char-table entry that is a cons cell.
** pre/post-command-hook are not reset to nil upon error.
Instead, the offending function is removed.
-** New low-level function run-hook-wrapped.
+** New hook types
+
+*** New function `run-hook-wrapped' for running an abnormal hook by
+passing the hook functions as arguments to a "wrapping" function.
++++
+*** New macro `with-wrapper-hook' for running an abnormal hook as a
+set of "wrapping" filters, similar to around advice.
** `server-eval-at' is provided to allow evaluating forms on different
Emacs server instances.
to the error handler as if the debugger had not been invoked instead of
jumping all the way to the top-level.
++++
+** The function format-time-string now supports the %N directive, for
+higher-resolution time stamps.
+
** New function `read-char-choice' reads a restricted set of characters,
discarding any inputs not inside the set.
** frame-local variables cannot be let-bound any more.
+** Major and minor mode changes
+++
-** prog-mode is a new major-mode meant to be the parent of programming mode.
-The prog-mode-hook it defines can be used to enable features for
-programming modes. For example:
-(add-hook 'prog-mode-hook 'flyspell-prog-mode)
-enables on the fly spell checking for comments and strings for
-programming modes.
+*** `prog-mode' is a new major mode from which programming modes
+should be derived.
+
+**** `prog-mode-hook' can be used to enable features for programming
+modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
+on-the-fly spell checking for comments and strings.
+
+*** New hook `change-major-mode-after-body-hook', run by
+`run-mode-hooks' just before any other mode hooks.
-** define-minor-mode accepts a new keyword :variable.
+*** Enabled globalized minor modes can be disabled in specific modes,
+by running (FOO-mode-hook 0) via a mode hook.
+
+*** `define-minor-mode' accepts a new keyword :variable.
+++
** `delete-file' and `delete-directory' now accept optional arg TRASH.
STARTTLS opportunistically or use plain SSL, depending on your needs.
Only versions 2.8.x and higher or GnuTLS have been tested.
+[FIXME: this statement needs clarifying, given that GnuTLS >= 2.6.6
+is the test used by configure.]
*** gnutls-log-level
Set `gnutls-log-level' higher than 0 to get debug output. 1 is for
*** `byte-compile-disable-print-circle' is obsolete.
*** `deferred-action-list' and `deferred-action-function' are obsolete.
-
++++
*** `font-lock-maximum-size' is obsolete.
\f
** New make target `dist' to create binary distribution for MS Windows.
+** Function `w32-default-color-map' is now obsolete.
+
** On Nextstep/OSX, the menu bar can be hidden by customizing
ns-auto-hide-menu-bar.