\f
* Installation Changes in Emacs 24.4
+---
** Emacs can now be compiled with ACL support.
This happens by default if a suitable support library is found at
build time, like libacl on GNU/Linux. To prevent this, use the
-configure option `--disable-acl'.
+configure option `--disable-acl'. See below for related features.
+---
** Emacs can now be compiled with file notification support.
This happens by default if a suitable system library is found at
build time. To prevent this, use the configure option
`--without-file-notification'. See below for file-notify features.
-FIXME? This feature is not available for the Nextstep port. (?)
+This feature is not available for the Nextstep port.
+
+---
+** Emacs can now be compiled with zlib support.
+This happens by default if zlib is present, which it normally is.
+To prevent this, use the configure option `--without-zlib'.
+This provides the function `zlib-decompress-region'; see below for details.
---
** The configure option `--without-compress-info' has been generalized,
** Directories passed to configure option `--enable-locallisppath' are
no longer created during installation.
-** Emacs can be compiled with zlib support.
-If this library is present (which it normally is on most systems), the
-function `zlib-decompress-region' becomes available, which can
-decompress gzip- and zlib-format compressed data.
-
---
** Emacs for NS (Mac OS X, GNUstep) can be built with ImageMagick support.
-This requires pkg-config to be available at configure time.
+This requires pkg-config to be available at build time.
\f
* Startup Changes in Emacs 24.4
\f
* Changes in Emacs 24.4
++++
+** New function `zlib-decompress-region', which decompresses gzip- and
+zlib-format compressed data using built-in zlib support, if available.
+
+++
** New option `gnutls-verify-error', if non-nil, means that Emacs
should reject SSL/TLS certificates that GnuTLS determines as invalid.
the *Messages* buffer should call the function `messages-buffer' to do
so and set up the mode.
-** Emacs now supports ACLs (access control lists).
++++
+** Emacs can now support ACLs (access control lists).
+This requires a suitable support library to be found at build time.
+On GNU/Linux, the POSIX ACL interface is used via libacl.
+On MS-Windows, the NT Security APIs are used to emulate the POSIX interface.
+
+++
*** Emacs preserves the ACL entries of files when backing up.
+++
*** New functions `file-acl' and `set-file-acl' get and set the ACL
-entries of a file. On GNU/Linux, the POSIX ACL interface is used via
-libacl. On MS-Windows, the NT Security APIs are used to emulate the
-POSIX ACL interfaces.
+entries of a file.
** Multi-monitor support has been added.
++++
*** New functions `display-monitor-attributes-list' and
`frame-monitor-attributes' can be used to obtain information about
each physical monitor on multi-monitor setups.
++++
*** The functions `display-pixel-width' and `display-pixel-height' now
behave consistently among the platforms: they return the pixel width
or height for all physical monitors associated with the given display
-as if they were on X11. To get information for each physical
+as if they were on X. To get information for each physical
monitor, use the new functions above. Similar notes also apply to
`x-display-pixel-width', `x-display-pixel-height', `display-mm-width',
`display-mm-height', `x-display-mm-width', and `x-display-mm-height'.
+++
*** The key `?' now describes prefix bindings, like `C-h'.
+---
*** The command `describe-function' has been extended for EIEIO.
Running it on constructors will show a full description of the
generated class. For generic functions, it will show all
** Frame and window changes
++++
+*** The function `window-in-direction' introduced in Emacs 24.1 now
+takes additional arguments for specifying a reference point, wrapping
+selection around frame borders, and specifying ways to select the
+minibuffer window.
+
+++
*** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
bound to <f11> and M-<f10>, respectively.
*** New hooks `focus-in-hook', `focus-out-hook'.
These are normal hooks run when an Emacs frame gains or loses input focus.
----
-*** Emacs can now draw dividers between adjacent windows.
-To put dividers between side-by-side/vertically stacked windows
-customize the frame parameter `right-divider-width'/`bottom-divider-width'
-to some positive integer. You can drag dividers with the mouse
-(they show a corresponding cursor when the mouse hovers over them).
-You can change the appearance of dividers by customizing the faces
-`window-divider', `window-divider-first-pixel', and
-`window-divider-last-pixel'. The last two are useful to provide a 3D
-effect, or to better distinguish dividers from surrounding display objects.
+*** Emacs can now change frame sizes in units of pixels, rather than
+text rows or columns. When maximizing a frame or making it fullscreen,
+remaining extra pixels are no longer given to the minibuffer, the rightmost
+fringe, or other unusable space, but are distributed among the text
+areas of the frame's windows. If the new option `frame-resize-pixelwise'
+is non-nil, all frame size changes happen pixelwise and set the
+corresponding size hints for the window manager.
+
+*** Emacs can now change window sizes in units of pixels.
+Mouse-dragging a mode line or window divider now changes the size of
+adjacent windows pixelwise. If the new option `window-resize-pixelwise'
+is non-nil, functions like `balance-windows-area' and `fit-window-to-buffer'
+resize windows pixelwise. Most functions for changing or accessing
+window sizes now have an additional argument that allows changes to apply,
+or values to be returned, in pixels instead of lines/columns.
+
++++
+*** The functions `window-body-height' and `window-body-width' now never
+count partially visible lines or columns if called with a nil PIXELWISE
+argument.
+
+*** Emacs can now draw dividers between adjacent windows. To put
+dividers between side-by-side/vertically stacked windows customize the
+frame parameters `right-divider-width' and `bottom-divider-width' to
+some positive integer. You can drag dividers with the mouse (they show
+a corresponding cursor when the mouse hovers over them). You can change
+the appearance of dividers by customizing the faces `window-divider',
+`window-divider-first-pixel', and `window-divider-last-pixel'. The last
+two are useful to provide a 3D effect, or to better distinguish dividers
+from surrounding display objects.
+
+*** New functions are provided to return the pixel sizes of window
+components, namely `window-scroll-bar-width', `window-mode-line-height'
+`window-header-line-height', `window-right-divider-width' and
+`window-bottom-divider-width'.
+
+*** The new function `window-text-pixel-size' returns the size of the
+text of a window's buffer in pixels. This allows functions like
+`fit-frame-to-buffer' and `fit-window-to-buffer' to accurately fit a
+window to its buffer as it will be displayed.
+
+*** `fit-window-to-buffer' can now resize windows in both dimensions.
+This behavior is controlled by the new option
+`fit-window-to-buffer-horizontally'. The new option
+`fit-frame-to-buffer' allows to fit the window's frame to its buffer.
+
+*** `fit-frame-to-buffer' now fits frames in both dimensions. The new
+options `fit-frame-to-buffer-margins' and `fit-frame-to-buffer-sizes'
+control the size of the frame and its position on screen.
+
+*** Temp Buffer Resize Mode can now adjust height and width of windows
+and frames. `temp-buffer-resize-mode' is now able to adjust the height
+and the width of a window displaying a temporary buffer. The new option
+`temp-buffer-max-width' allows to control the width of temporary buffer
+windows. Moreover, if the new option `fit-frame-to-buffer' is non-nil
+and the buffer appears in the root window of a frame, Temp Buffer Resize
+Mode will try to adjust width and/or height of the frame.
---
*** `split-window' is now a non-interactive function, not a command.
and as such superfluous. After being reimplemented in Lisp, its
interactive form was mistakenly retained.
++++
+*** The functions `window-size' and `window-total-size' now have an
+optional argument to return a rounded size value.
+
++++
+*** `window-state-put' now allows to put a window state into internal
+windows too.
+
+++
*** New option `scroll-bar-adjust-thumb-portion'.
Available only on X, this option allows to control over-scrolling
using the scroll bar (i.e. dragging the thumb down even when the end
of the buffer is visible).
++++
+*** New basic action function `display-buffer-in-previous-window' has
+`display-buffer' display a buffer in a window previously showing that
+buffer.
+
++++
+*** New basic action function `display-buffer-at-bottom' has
+`display-buffer' choose or make a window at the bottom of the selected
+frame.
+
+*** New display action function `display-buffer-no-window' to not
+display the buffer in a window.
+
+*** New display action alist entry `allow-no-window' to indicate the
+caller of `display-buffer' is ready to handle the case of not
+displaying the buffer in a window.
+
** Lisp evaluation changes
+++
*** `eval-defun' on an already defined defcustom calls the :set function,
This unfinished feature was introduced by accident in Emacs 23.1;
simply disabling Transient Mark mode does the same thing.
+---
** The default value of `comment-use-global-state' is now t,
and this variable has been marked obsolete.
** `emacs-bzr-version' has been renamed to `emacs-repository-version',
and works for git too, if you fetch the repository notes.
-** `read-regexp-defaults-function' defines a function to provide default
-values for reading regexps by commands like `rgrep', `lgrep' `occur',
-`highlight-regexp', etc. You can customize this to specify a function
-that provides a default value from the regexp last history element,
-or from the symbol found at point.
-
+++
** New option `load-prefer-newer' affects how the `load' function chooses
the file to load. If this is non-nil, then when both .el and .elc
** Indentation changes
+*** `electric-indent-mode' is now enabled by default.
+E.g., typing RET reindents the current line and indents the new line.
+`C-j' inserts a newline but does not indent.
+
+++
*** The behavior of `C-x TAB' (`indent-rigidly') has changed.
When invoked without a prefix argument, it now activates a transient
the text indentation in the region. Typing any other key resumes
normal editing behavior.
-*** `electric-indent-mode' is enabled by default.
-
+++
*** `tab-stop-list' is now implicitly extended to infinity by repeating
the last step. Its default value is changed to nil, which means a tab
+++
** Uniquify is enabled by default, with `post-forward-angle-brackets' style.
++++
** New command `C-x SPC' (`rectangle-mark-mode') makes a rectangular region.
Most commands are still unaware of it, but kill/yank do work on the rectangle.
Interactive commands that read registers and want to make use of this
should use `register-read-with-preview' to read register names.
++++
*** New command `frameset-to-register' bound to `C-x r f', replacing
`frame-configuration-to-register'. It offers similar functionality,
plus enhancements like the ability to restore deleted frames.
+++
*** New Lisp debugger command `v' (`debugger-toggle-locals') toggles the
-displays of local variables.
+display of local variables of the current stack frame.
++++
*** The Lisp debugger's `e' command (`debugger-eval-expression') now includes
the lexical environment when evaluating the code in the context at point
(and so allows you to access lexical variables).
** CUA mode
++++
*** CUA mode now uses `delete-selection-mode' and `shift-select-mode'.
Hence, you can now enable it independently from those modes, and from
`transient-mark-mode'.
*** `cua-highlight-region-shift-only' is now obsolete.
You can disable `transient-mark-mode' to get the same result.
-*** CUA's rectangles can now be used via `cua-rectangle-mark-mode'.
++++
+*** CUA's rectangles can now be used without CUA by calling the command
+`cua-rectangle-mark-mode'.
** CFEngine mode
** Desktop
-*** `desktop-auto-save-timeout' defines the number of seconds idle time
-before auto-save of the desktop.
++++
+*** `desktop-save-mode' by default now auto-saves an existing desktop file
+after `desktop-auto-save-timeout'. To disable this, customize that option
+to nil (or zero).
++++
*** `desktop-restore-frames', enabled by default, allows saving and
restoring the frame/window configuration (frameset). Additional options
`desktop-restore-in-current-display', `desktop-restore-reuses-frames'
** Electric Pair mode
++++
*** New option `electric-pair-preserve-balance', enabled by default.
If non-nil, pairing/skipping only kicks in when that help the balance
of parentheses and quotes, i.e. the buffer should end up at least as
You can further control this behavior by adjusting the predicates
stored in `electric-pair-inhibit-predicate' and `electric-pair-skip-self'.
++++
*** New option `electric-pair-delete-adjacent-pairs', enabled by default.
In `electric-pair-mode', the commands `backward-delete-char' and
`backward-delete-char-untabify' are now bound to electric variants
that delete the closer when invoked between adjacent pairs.
++++
*** New option `electric-pair-open-newline-between-pairs', enabled by default.
In `electric-pair-mode', inserting a newline between adjacent pairs
opens an extra newline after point, which is indented if
`electric-indent-mode' is also set.
++++
*** New option `electric-pair-skip-whitespace', enabled by default.
This controls if skipping over closing delimiters should jump over any
whitespace slack. Setting it to `chomp' makes it delete this
whitespace. See also the variable `electric-pair-skip-whitespace-chars'.
+---
*** New variables control the pairing in strings and comments.
You can customize `electric-pair-text-pairs' and
`electric-pair-text-syntax-table' to tweak pairing behavior inside
*** New option `hi-lock-auto-select-face'. When non-nil, hi-lock commands
will cycle through faces in `hi-lock-face-defaults' without prompting.
+---
** New Imenu option `imenu-generic-skip-comments-and-strings'.
** Info
+++
** Octave mode
-*** Font locking for texinfo comments and new keywords.
+*** Font locking for Texinfo comments and new keywords.
*** Completion in Octave file buffers.
to filter the list of packages by a keyword.
+++
-*** In the `describe-package' buffer, there are now buttons listing the
+*** In the `describe-package' buffer, there are now buttons listing the
keywords related to the package. Click on a button to see other packages
related to that keyword.
** Remember
-*** The new command `remember-notes' creates a buffer that is saved on
-`kill-emacs'. You can think of it as a *scratch* buffer whose content
-is preserved. In fact, it was designed as a replacement for *scratch*
-buffer and can be used that way by setting `initial-buffer-choice' to
-`remember-notes' and `remember-notes-buffer-name' to "*scratch*".
-Without the second change, the *scratch* buffer will still be there
-for notes that do not need to be preserved.
++++
+*** The new command `remember-notes' creates a buffer that is saved on exit.
+You can use it as a more permanent *scratch* buffer.
-*** The Remember package can now store notes in separates files.
-You can use the new function `remember-store-in-files' within the
-`remember-handler-functions' option. See `remember-data-directory'
-and `remember-directory-file-name-format' for new options related to
-this function.
++++
+*** Remember can now store notes in separate files.
+To use this, add `remember-store-in-files' to the `remember-handler-functions'
+option. The files are saved in `remember-data-directory' using
+names specified by `remember-directory-file-name-format'.
** Rmail
++++
*** Customize `rmail-mbox-format' to influence some minor aspects of
how Rmail displays non-MIME messages.
*** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
and adds it to the search string.
-*** `M-s i' in Isearch mode toggles the variable `isearch-invisible'
-between nil and the value of the option `search-invisible' (or `open'
-when it's nil).
++++
+*** `M-s i' in Isearch mode toggles whether search matches invisible text.
++++
*** `query-replace' skips invisible text when `search-invisible' is nil,
and opens overlays with hidden text when `search-invisible' is `open'.
---
*** `sh-mode' now has its own setting for `add-log-current-defun-function'.
-** SMIE indentation can be customized via `smie-config'.
-Emacs can learn the appropriate indentation settings if you provide it
-with an indented sample file.
+** SMIE
+
++++
+*** You can customize the SMIE indentation of a mode via `smie-config'.
+The command `smie-config-guess' can help you derive the appropriate
+indentation settings, if you provide it with an indented sample file.
+Use `smie-config-save' to save the result.
+
++++
+*** You can customize the SMIE indentation of a file by adding an entry to
+the file's local variables of the form: `eval: (smie-config-local '(RULES))'.
+
++++
+*** New commands `smie-config-show-indent' and `smie-config-set-indent'.
+
+---
+** SQL mode
+
+*** Improved login monitoring and appropriate response to login failures.
+New variable `sql-login-delay' defines maximum wait time for a connection.
+
+*** Oracle support.
+SQL*Plus script placeholders are properly highlighted and identified
+in `sql-placeholders-filter'. When starting SQL*Plus, `sql-oracle-options'
+are passed before the logon parameter, as required. The default now
+includes `-L', to limit the number of logon attempts per invocation.
---
** New Term mode option `term-suppress-hard-newline'.
** `defvar' and `defcustom' in a let-binding affect the "external" default.
---
-** The syntax of ?» and ?« is now punctuation instead of matched parens.
-Some languages match those as »...«, and others as «...», so it is
+** The syntax of ?» and ?« is now punctuation instead of matched parens.
+Some languages match those as »...«, and others as «...», so it is
better for Emacs to stay neutral by default.
---
It used to disable the minor mode, major mode, and text-property keymaps,
whereas now it simply has higher precedence.
++++
** Default process filters and sentinels are not nil any more.
Instead they default to a function that does what the nil value used to do.
+++
** New functions `special-form-p' and `macrop'.
++++
** New macro `define-alternatives' can be used to define generic commands.
Generic commands are interactive functions whose implementation can be
selected among several alternatives, as a matter of user preference.
-** The `defalias-fset-function' property lets you catch `defalias'
-calls, and redirect them to your own function, instead of `fset'.
++++
+** If you give a symbol a `defalias-fset-function' property, `defalias'
+on that symbol will use the associated value as a function to call
+in place of `fset'.
+++
** New variable `enable-dir-local-variables'.
+++
** New function `get-pos-property'.
++++
+** `read-regexp' now uses the new variable `read-regexp-defaults-function'
+as a function to call to provide default values.
+
** Completion changes
-*** The separator for `completing-read-multiple' can now be a regexp.
-The default separator has been changed to allow surrounding spaces
+---
+*** The separator used by `completing-read-multiple' is now a regexp.
+The default `crm-separator' has been changed to allow surrounding spaces
around the comma.
-*** The `common-substring' arg of `display-completion-list' is obsolete.
-Either use `completion-all-completions', which returns highlighted
-strings (including for partial or substring completion), or call
-`completion-hilit-commonality' to add the highlight.
++++
+*** The `common-substring' argument of `display-completion-list',
+which has been documented as obsolete since Emacs 23.1, is now _really_
+obsolete, and no longer advertised. Instead either call
+`completion-hilit-commonality' to add the highlighting; or use
+`completion-all-completions', which returns highlighted strings.
++++
*** New function `completion-table-with-cache' is a wrapper for
`completion-table-dynamic' that caches the result of the last lookup.
++++
*** New function `completion-table-merge' to combine several
completion tables by merging their completions.
++++
** New minor modes `prettify-symbols-mode' and `global-prettify-symbols-mode'
-let you enable symbol prettification (replacing a string like "lambda" with
-the Greek lambda character).
+display specified symbols as composed characters. E.g., in Emacs Lisp mode,
+this replaces the string "lambda" with the Greek lambda character.
** Terminal changes
display or frame whenever a mouse is supported on that display or
frame.
-*** New hook `tty-setup-hook'.
-
-** Window Handling
-
-*** New display action function `display-buffer-no-window' to not
-display the buffer in a window.
++++
+*** New hook `tty-setup-hook', run at the end of initializing a text terminal.
-*** New display action alist entry `allow-no-window' to indicate the
-caller of `display-buffer' is ready to handle the case of not
-displaying the buffer in a window.
++++
+*** The hook `term-setup-hook' is obsolete. It is entirely equivalent
+to `emacs-startup-hook'. See also the new `tty-setup-hook'.
++++
** New hook `pre-redisplay-function'.
+++
*** `generic-make-keywords-list'
*** `get-upcase-table' (use `case-table-get-table' instead).
++++
** `with-wrapper-hook' is obsoleted by `add-function'.
The few hooks that used with-wrapper-hook are replaced as follows:
*** `abbrev-expand-function' obsoletes `abbrev-expand-functions'.
** Face changes
++++
*** The function `face-spec-set' is now like `setq' for face specs.
Its third arg now accepts values specifying a face spec type (defface,
custom, or override spec), and the relevant spec is set accordingly.
*** New function `add-face-text-property', which can be used to
conveniently prepend/append new face properties.
+---
*** Face specs set via Custom themes now replace the `defface' spec
-rather than inheriting from it (as do face specs set via Customize).
+rather than inheriting from it. In other words, setting a face via a
+theme now behaves like setting it via Customize: you only need to
+specify the attributes that you want, you don't need to unset those
+that you don't want.
+---
*** New face characteristic (supports :underline (:style wave))
specifies whether or not the terminal can display a wavy line.
HCoop / bpt / emacs.git / blobdiff