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2568 lines
100 KiB
Plaintext
GNU Emacs NEWS -- history of user-visible changes.
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Copyright (C) 2007-2021 Free Software Foundation, Inc.
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See the end of the file for license conditions.
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Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
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If possible, use M-x report-emacs-bug.
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This file is about changes in Emacs version 23.
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See files NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18, and NEWS.1-17
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for changes in older Emacs versions.
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You can narrow news to a specific version by calling `view-emacs-news'
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with a prefix argument or by typing C-u C-h C-n.
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* Installation Changes in Emacs 23.4
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** The MS-Windows build prefers libpng version 1.14 or later.
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Versions of libpng before 1.14 had security issues, so we now
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recommend to use version 1.14 or later. Precompiled Windows binaries
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||
require version 1.14 or later. See README.W32 and nt/INSTALL for
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||
details and pointers to URLs where the latest libpng can be
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downloaded.
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* Changes in Specialized Modes and Packages in Emacs 23.4
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** EDE
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*** New variable `ede-project-directories'.
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EDE now refuses to automatically load a project file (Project.ede)
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unless the file is in one of the directories specified by this
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variable. This reduces the risk of inadvertently loading malicious
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||
project files. The commands `M-x ede-new' and `M-x ede' now offer to
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save directories to `ede-project-directories'.
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* Changes in Emacs 23.4 on non-free operating systems
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** The MS-Windows port can now use more than 500MB of heap.
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Depending on the available virtual memory, Emacs on Windows can now
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have up to 2GB of heap space. This allows, e.g., visiting several
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large (> 256MB) files in the same session.
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* Installation Changes in Emacs 23.3
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** New configure option --with-crt-dir specifies the location of your
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crt*.o files, if they are in a non-standard location. This is only
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used on x86-64 and s390x GNU/Linux architectures.
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* Changes in Emacs 23.3
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** The last-resort backup file `%backup%~' is now written to
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`user-emacs-directory', instead of the user's home directory.
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** If Emacs creates `user-emacs-directory', that directory's
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permissions are now set to rwx------, ignoring the umask.
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* Changes in Specialized Modes and Packages in Emacs 23.3
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** Calendar and diary
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||
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*** The appt-add command takes an optional argument, the warning time.
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This can be used in place of the default appt-message-warning-time.
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** Python mode
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*** You can allow inferior Python processes to load modules from the
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current directory by setting `python-remove-cwd-from-path' to nil.
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** Rmail
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*** The default value of `rmail-enable-mime' is now t. Rmail decodes
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MIME contents automatically. You can customize the variable
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`rmail-enable-mime' back to `nil' to disable this automatic MIME
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||
decoding.
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*** The command `rmail-mime' change the displaying of a MIME message
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between decoded presentation form and raw data if `rmail-enable-mime'
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is non-nil. And, with prefix argument, it change only the displaying
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||
of the MIME entity at point.
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||
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*** The new command `rmail-mime-next-item' (bound to TAB) moves point
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to the next item of MIME message.
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||
*** The new command `rmail-mime-previous-item' (bound to backtab) moves
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point to the previous item of MIME message.
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*** The new command `rmail-mime-toggle-hidden' (RET) hide or show the
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||
body of the MIME entity at point.
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||
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||
** VC and related modes
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||
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||
*** New VC command `vc-log-incoming', bound to `C-x v I'.
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||
This shows a log of changes to be received with a pull operation.
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||
For Git, this runs "git fetch" to make the necessary data available
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||
locally; this requires version 1.7 or newer.
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||
*** New VC command `vc-log-outgoing', bound to `C-x v O'.
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||
This shows a log of changes to be sent in the next commit.
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||
*** New VC command vc-find-conflicted-file.
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||
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||
*** The 'g' key in VC diff, log, log-incoming and log-outgoing buffers
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||
reruns the corresponding VC command to compute an up to date version
|
||
of the buffer.
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||
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||
*** vc-dir for Bzr supports viewing shelve contents and shelving snapshots.
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*** Special markup can be added to log-edit buffers.
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You can add headers specifying additional information to be supplied
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to the version control system. For example:
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Author: J. R. Hacker <jrh@example.com>
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Fixes: 4204
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||
Actual text of log entry...
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||
|
||
Bazaar recognizes the headers "Author", "Date" and "Fixes".
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||
Git, Mercurial, and Monotone recognize "Author" and "Date".
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||
Any unknown header is left as is in the message, so it is not lost.
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||
** Obsolete packages
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||
|
||
*** lmenu.el and cl-compat.el are now obsolete.
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||
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* New Modes and Packages in Emacs 23.3
|
||
|
||
** smie.el is a generic navigation and indentation engine.
|
||
It takes a simple BNF description of the grammar, and provides both
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sexp-style navigation (jumping over begin..end pairs) as well as
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||
indentation, which can be adjusted via ad-hoc indentation rules.
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||
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||
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||
* Incompatible Lisp Changes in Emacs 23.3
|
||
|
||
** posn-col-row now excludes the header line from the row count
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||
If the frame has a header line, posn-col-row will count row numbers
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starting from the first line of text below the header line.
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* Lisp changes in Emacs 23.3
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** `e' and `pi' are now called `float-e' and `float-pi'.
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The old names are obsolete.
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** The use of unintern without an obarray arg is now obsolete.
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||
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||
** The function `princ-list' is now obsolete.
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||
|
||
** The yank-handler argument to kill-region and friends is now obsolete.
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||
|
||
** New function byte-to-string, like char-to-string but for bytes.
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||
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||
* Changes in Emacs 23.3 on non-free operating systems
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** The NeXTstep port can have different modifiers for the left and right
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alt/option key by customizing the value for ns-right-alternate-modifier.
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* Installation Changes in Emacs 23.2
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** New configure options for Emacs developers.
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These are not new features; only the configure flags are new.
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*** --enable-profiling builds Emacs with profiling enabled.
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This might not work on all platforms.
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*** --enable-checking[=OPTIONS] builds emacs with extra runtime checks.
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||
** `make install' now consistently ignores umask, creating a
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world-readable install.
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||
** Emacs compiles with Gconf support, if it is detected.
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Use the configure option --without-gconf to disable this.
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This is used by the `font-use-system-font' feature (see below).
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* Startup Changes in Emacs 23.2
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** The command-line option -Q (--quick) also inhibits loading X resources.
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However, if Emacs is compiled with the Lucid or Motif toolkit, X
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||
resource settings for the graphical widgets are still applied.
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||
On Windows, the -Q option causes Emacs to ignore Registry settings,
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||
but environment variables set on the Registry are still honored.
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||
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||
*** The new variable `inhibit-x-resources' shows whether X resources
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were loaded.
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||
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||
** New command-line option -mm (--maximized) maximizes the initial frame.
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* Changes in Emacs 23.2
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||
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||
** The maximum size of buffers (and the largest fixnum) is doubled.
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||
On typical 32bit systems, buffers can now be up to 512MB.
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||
** The default value of `trash-directory' is now nil.
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||
This means that `move-file-to-trash' trashes files according to
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freedesktop.org specifications, the same method used by the Gnome,
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KDE, and XFCE desktops. (This change has no effect on Windows, which
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uses `system-move-file-to-trash' for trashing.)
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** The pointer now becomes invisible when typing.
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Customize `make-pointer-invisible' to disable this feature.
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||
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||
** Font changes
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||
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||
*** Emacs can use the system default monospaced font in Gnome.
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||
To enable this feature, set `font-use-system-font' to non-nil (it is
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nil by default). If the system default changes, Emacs changes also.
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This feature requires Gconf support, which is automatically included
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at compile-time if configure detects the gconf libraries (you can
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disable this with the configure option --without-gconf).
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*** On X11, Emacs reacts to Xft changes made by configuration tools,
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via the XSETTINGS mechanism. This includes antialias, hinting,
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hintstyle, RGBA, DPI and lcdfilter changes.
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||
** Killing a buffer with a running process now asks for confirmation.
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||
To remove this query, remove `process-kill-buffer-query-function' from
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`kill-buffer-query-functions', or set the appropriate process flag
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with `set-process-query-on-exit-flag'.
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** File-local variable changes
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||
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||
*** Specifying a minor mode as a local variables enables that mode,
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||
unconditionally. The previous behavior, toggling the mode, was
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||
neither reliable nor generally desirable.
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||
*** There are new commands for adding and removing file-local variables:
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||
`add-file-local-variable', `delete-file-local-variable',
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`add-file-local-variable-prop-line', and
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||
`delete-file-local-variable-prop-line'.
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||
*** There are new commands for adding and removing directory-local variables,
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||
and copying them to and from file-local variable lists:
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||
`add-dir-local-variable', `delete-dir-local-variable',
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`copy-dir-locals-to-file-locals',
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||
`copy-dir-locals-to-file-locals-prop-line' and
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||
`copy-file-locals-to-dir-locals'.
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||
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||
** Internationalization changes
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||
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||
*** Unibyte sessions are now considered obsolete.
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||
This refers to the EMACS_UNIBYTE environment variable as well as the
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--unibyte, --multibyte, --no-multibyte, and --no-unibyte command line
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||
arguments. Customizing enable-multibyte-characters and setting
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||
default-enable-multibyte-characters are also deprecated.
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||
*** New coding system `utf-8-hfs'.
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||
This is suitable for default-file-name-coding-system on Mac OS X; see
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international/ucs-normalize.el.
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||
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||
** Function arguments in *Help* buffers are now shown in upper-case.
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||
Customize `help-downcase-arguments' to t to show them in lower-case.
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||
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||
** New command `async-shell-command', bound globally to `M-&'.
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||
This executes the command asynchronously, similar to calling `M-!' and
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||
manually adding an ampersand to the end of the command. With `M-&',
|
||
you don't need the ampersand. The output appears in the buffer
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||
`*Async Shell Command*'.
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||
|
||
** When running in a new enough xterm (newer than version 242), Emacs
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||
asks xterm what the background color is and it sets up faces
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||
accordingly for a dark background if needed (the current default is to
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consider the background light).
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||
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* Editing Changes in Emacs 23.2
|
||
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||
** Kill-ring and selection changes
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||
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*** If `select-active-regions' is t, any active region automatically
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||
becomes the primary selection (for interaction with other window
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||
applications). If you enable this, you might want to bind
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`mouse-yank-primary' to Mouse-2.
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||
*** When `save-interprogram-paste-before-kill' is non-nil, the kill
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||
commands save the interprogram-paste selection into the kill ring
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||
before doing anything else. This avoids losing the selection.
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*** When `kill-do-not-save-duplicates' is non-nil, identical
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subsequent kills are not duplicated in the `kill-ring'.
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||
** Completion changes
|
||
|
||
*** The new command `completion-at-point' provides mode-sensitive completion.
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||
|
||
*** tab-always-indent set to `complete' lets TAB do completion as well.
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||
|
||
*** The new completion-style `initials' is available.
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||
For instance, this can complete M-x lch to list-command-history.
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||
*** The new variable `completions-format' determines how completions
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||
are displayed in the *Completions* buffer. If you set it to
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`vertical', completions are sorted vertically in columns.
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||
** The default value of `blink-matching-paren-distance' is increased.
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||
** M-n provides more default values in the minibuffer for commands
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that read file names. These include the file name at point (when ffap
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||
is loaded without ffap-bindings), the file name on the current line
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(in Dired buffers), and the directory names of adjacent Dired windows
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||
(for Dired commands that operate on several directories, such as copy,
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rename, or diff).
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||
|
||
** M-r is bound to the new `move-to-window-line-top-bottom'.
|
||
This moves point to the window center, top and bottom on successive
|
||
invocations, in the same spirit as the C-l (recenter-top-bottom)
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||
command.
|
||
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||
** The new variable `recenter-positions' determines the default
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||
cycling order of C-l (`recenter-top-bottom').
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||
** The abbrevs file is now a file named abbrev_defs in
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||
user-emacs-directory; but the old location, ~/.abbrev_defs, is used if
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that file exists.
|
||
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||
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* Changes in Specialized Modes and Packages in Emacs 23.2
|
||
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||
** The bookmark menu has a narrowing search via bookmark-bmenu-search.
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||
** Calc
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||
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||
*** The Calc settings file is now a file named calc.el in
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user-emacs-directory; but the old location, ~/.calc.el, is used if
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||
that file exists.
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||
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||
*** New twos-complement display.
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||
|
||
*** Graphing commands (`g f' etc.) now work on MS-Windows, if you have
|
||
the native Windows port of Gnuplot version 3.8 or later installed.
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||
|
||
** Calendar and diary
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||
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||
*** Fancy diary display is now the default.
|
||
If you prefer the simple display, customize `diary-display-function'.
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||
|
||
*** The diary's fancy display now enables view-mode.
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||
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||
*** The command `calendar-current-date' accepts an optional argument
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||
giving an offset from today.
|
||
|
||
** Desktop
|
||
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||
*** The default value for `desktop-buffers-not-to-save' is nil.
|
||
This means Desktop will try restoring all buffers, when you restart
|
||
your Emacs session. Also, `desktop-buffers-not-to-save' is only
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||
effective for buffers that have no associated file. If you want to
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||
exempt buffers that do correspond to files, customize the value of
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`desktop-files-not-to-save' instead.
|
||
|
||
** Dired
|
||
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||
*** The new variable `dired-auto-revert-buffer', if non-nil, causes
|
||
Dired buffers to be reverted automatically on revisiting them.
|
||
|
||
** DocView
|
||
|
||
*** When `doc-view-continuous' is non-nil, scrolling a line
|
||
on the page edge advances to the next/previous page.
|
||
|
||
** Elint
|
||
|
||
*** Elint now uses compilation-mode.
|
||
|
||
*** Elint can now scan individual files and whole directories,
|
||
and can be run in batch mode.
|
||
|
||
*** Elint does a more thorough initialization, and recognizes more built-in
|
||
functions and variables. Customize `elint-scan-preloaded' if you want
|
||
to sacrifice some accuracy for a faster startup.
|
||
|
||
*** Elint attempts some basic understanding of featurep and (f)boundp tests.
|
||
|
||
*** Customize `elint-ignored-warnings' to suppress some warnings.
|
||
|
||
** GDB-UI
|
||
|
||
*** Toolbar functionality for reverse debugging. Display of STL
|
||
collections as watch expressions. These features require GDB 7.0 or later.
|
||
|
||
** Grep
|
||
|
||
*** A new command `zrgrep' searches recursively in gzipped files.
|
||
|
||
** Info
|
||
|
||
*** The new command `Info-virtual-index' bound to "I" displays a menu of
|
||
matched topics found in the index.
|
||
|
||
*** The new command `info-finder' replaces finder.el with a virtual Info
|
||
manual that generates an Info file which gives the same information
|
||
through a menu structure.
|
||
|
||
** LaTeX mode now provides completion (via completion-at-point).
|
||
|
||
** Message mode is now the default mode for composing mail.
|
||
|
||
The default for `mail-user-agent' is now message-user-agent, so the
|
||
C-x m (`compose-mail') command uses Message mode instead of Mail mode.
|
||
|
||
Message mode has been included in Emacs, as part of the Gnus package,
|
||
for several years. It provides several features that are absent in
|
||
Mail mode, such as MIME handling.
|
||
|
||
*** If the user has not customized mail-user-agent, `compose-mail'
|
||
checks for Mail mode customizations, and issues a warning if these
|
||
customizations are found. This alerts users who may otherwise be
|
||
unaware that their mail configuration has changed.
|
||
|
||
To disable this check, set compose-mail-user-agent-warnings to nil.
|
||
|
||
** The default value of mail-interactive is t, since Emacs 23.1.
|
||
(This was not announced at the time.) It means that when sending mail,
|
||
Emacs will wait for the process sending mail to return. If you
|
||
experience delays when sending mail, you may wish to set this to nil.
|
||
|
||
** nXML mode is now the default for editing XML files.
|
||
|
||
** pcomplete provides a new command `pcomplete-std-completion' which
|
||
is similar to `pcomplete' but using the standard completion UI code.
|
||
|
||
** Shell (and other comint modes)
|
||
|
||
*** M-s is no longer bound to `comint-next-matching-input'.
|
||
|
||
*** M-r is now bound to `comint-history-isearch-backward-regexp'.
|
||
This starts an incremental search of the comint/shell input history.
|
||
|
||
*** ansi-color is now enabled by default in Shell mode.
|
||
To disable it, set ansi-color-for-comint-mode to nil.
|
||
|
||
** Tramp
|
||
|
||
*** New connection methods "rsyncc", "imap" and "imaps".
|
||
On systems which support GVFS-Fuse, Tramp offers also the new
|
||
connection methods "dav", "davs", "obex" and "synce".
|
||
|
||
** VC and related modes
|
||
|
||
*** When using C-x v v or C-x v i on a unregistered file that is in a
|
||
directory not controlled by any VCS, ask the user what VC backend to
|
||
use to create a repository, create a new repository and register the
|
||
file.
|
||
|
||
*** New command `vc-root-print-log', bound to `C-x v L'.
|
||
This displays a `*vc-change-log*' buffer showing the history of the
|
||
version-controlled directory tree as a whole.
|
||
|
||
*** New command `vc-root-diff', bound to `C-x v D'.
|
||
This is similar to `vc-diff', but compares the entire directory tree
|
||
of the current VC directory with its working revision.
|
||
|
||
*** `C-x v l' and `C-x v L' do not show the full log by default.
|
||
The number of entries shown can be chosen interactively with a prefix
|
||
argument, or by customizing vc-log-show-limit. The `*vc-change-log*'
|
||
buffer now contains buttons at the end of the buffer, which can be
|
||
used to increase the number of entries shown. RCS, SCCS, and CVS do
|
||
not support this feature.
|
||
|
||
*** vc-annotate supports annotations through file copies and renames,
|
||
it displays the old names for the files and it can show logs/diffs for
|
||
the corresponding lines. Currently only Git and Mercurial take
|
||
advantage of this feature.
|
||
|
||
*** The log command in vc-annotate can display a single log entry
|
||
instead of redisplaying the full log. The RCS, CVS and SCCS VC
|
||
backends do not support this.
|
||
|
||
*** When a file is not found, VC will not try to check it out of RCS anymore.
|
||
|
||
*** Diff and log operations can be used from Dired buffers.
|
||
|
||
*** vc-git changes
|
||
|
||
**** The short log format for git makes use of the graph display,
|
||
so it's not supported on git versions earlier than 1.5.6.
|
||
|
||
**** vc-dir uses the --relative option of git, and so requires at least
|
||
git version 1.5.5.
|
||
|
||
**** Support for operating with stashes has been added to vc-dir:
|
||
the stash list is displayed in the *vc-dir* header, stashes can be
|
||
created, removed, applied and their content displayed.
|
||
|
||
*** vc-bzr supports operating with shelves: the shelve list is
|
||
displayed in the *vc-dir* header, shelves can be created, removed and applied.
|
||
|
||
*** log-edit-strip-single-file-name controls whether or not single filenames
|
||
are stripped when copying text from the ChangeLog to the *VC-Log* buffer.
|
||
|
||
** Miscellaneous
|
||
|
||
*** Interactively `multi-isearch-buffers' and `multi-isearch-buffers-regexp'
|
||
read buffer names to search, one by one, ended with RET. With a prefix
|
||
argument, they ask for a regexp, and search in buffers whose names match
|
||
the specified regexp. Interactively `multi-isearch-files' and
|
||
`multi-isearch-files-regexp' read file names to search, one by one,
|
||
ended with RET. With a prefix argument, they ask for a wildcard, and
|
||
search in file buffers whose file names match the specified wildcard.
|
||
|
||
*** Autorevert Tail mode now works also for remote files.
|
||
|
||
*** The new eshell built-in commands `su' and `sudo' support Tramp.
|
||
Thus, they change `default-directory' to reflect the new user id, and
|
||
let commands run under that user's permissions. This works even when
|
||
`default-directory' is already remote. Calling the external commands
|
||
is possible via `*su' or `*sudo', respectively.
|
||
|
||
** Obsolete packages
|
||
|
||
*** sym-comp.el is now obsolete, superseded by completion-at-point.
|
||
|
||
*** lucid.el and levents.el are now obsolete.
|
||
|
||
|
||
* New Modes and Packages in Emacs 23.2
|
||
|
||
** CEDET (the Collection of Emacs Development Tools) is now in Emacs.
|
||
This is a collection of packages to aid with using Emacs as an IDE
|
||
(integrated development environment):
|
||
|
||
*** The Semantic package allows the use of parsers to intelligently
|
||
edit and navigate source code. Parsers for C/C++, Java, Javascript,
|
||
and several other languages are included by default, and Semantic can
|
||
also interface with external tools such as GNU Global and GNU Idutils.
|
||
|
||
To enable Semantic, use the global minor mode `semantic-mode'.
|
||
See the Semantic manual for details.
|
||
|
||
*** EDE (Emacs Development Environment) is a package for managing code
|
||
projects, including features such as automatic Makefile generation.
|
||
|
||
To enable EDE, use the minor mode `global-ede-mode'.
|
||
See the EDE manual for details.
|
||
|
||
*** SRecode is a library for recoding Semantic tags back into source
|
||
code. It is currently used by some parts of Semantic and EDE; in the
|
||
future, it may be used for code generation features.
|
||
|
||
*** The EIEIO library implements a subset of the Common Lisp Object
|
||
System (CLOS). It is used by the other CEDET packages.
|
||
|
||
** mpc.el is a front end for the Music Player Daemon. Run it with M-x mpc.
|
||
|
||
** htmlfontify.el turns a fontified Emacs buffer into an HTML page.
|
||
|
||
** js.el is a new major mode for JavaScript files.
|
||
|
||
** imap-hash.el is a new library to address IMAP mailboxes as hash tables.
|
||
|
||
|
||
* Incompatible Lisp Changes in Emacs 23.2
|
||
|
||
** The Lisp reader turns integers that are too large/small into floats.
|
||
For instance, on machines where `536870911' is the largest integer,
|
||
reading `536870912' gives the floating-point object `536870912.0'.
|
||
|
||
This change only concerns the Lisp reader; it does not affect how
|
||
actual integer objects overflow.
|
||
|
||
** Several obsolete functions removed.
|
||
The functions have been obsolete since Emacs 19, and are unlikely to
|
||
be in use:
|
||
|
||
time-stamp-month-dd-yyyy, time-stamp-dd/mm/yyyy, time-stamp-mon-dd-yyyy
|
||
time-stamp-dd-mon-yy, time-stamp-yy/mm/dd, time-stamp-yyyy/mm/dd,
|
||
time-stamp-yyyy-mm-dd, time-stamp-yymmdd, time-stamp-hh:mm:ss,
|
||
time-stamp-hhmm, baud-rate
|
||
|
||
** Support for generating Emacs 18 compatible bytecode (by setting
|
||
the variable `byte-compile-compatibility') has been removed.
|
||
|
||
** In image-mode.el `image-mode-maybe' is obsolete.
|
||
Instead, you can either use `image-mode' (which displays an image file
|
||
as the actual image initially), or `image-mode-as-text' (when you want
|
||
to display an image file as text initially). `image-mode-as-text' is a
|
||
combination of a non-image mode from `auto-mode-alist' (or Fundamental
|
||
mode) and `image-minor-mode'. `image-minor-mode' provides a `C-c C-c'
|
||
key binding to toggle image display.
|
||
`image-toggle-display-text' removes image properties.
|
||
`image-toggle-display-image' adds image properties.
|
||
`image-toggle-display' toggles between `image-mode-as-text' and `image-mode'.
|
||
|
||
|
||
* Lisp changes in Emacs 23.2
|
||
|
||
** All the default-FOO variables that hold the default value of the FOO
|
||
variable, are now declared obsolete.
|
||
|
||
** read-key is a function halfway between read-event and read-key-sequence.
|
||
It reads a single key, but obeys input and escape sequence decoding.
|
||
|
||
** Frame parameter changes
|
||
|
||
*** You can give the `fullscreen' frame parameter the value `maximized'.
|
||
This maximizes the frame.
|
||
|
||
*** The new frame parameter `sticky' makes Emacs frames sticky in
|
||
virtual desktops.
|
||
|
||
** Completion changes
|
||
|
||
*** completion-base-size is obsoleted by completion-base-position.
|
||
This change causes a few backward incompatibilities, mostly with
|
||
choose-completion-string-functions where the `mini-p' argument has
|
||
been replaced by a `base-position' argument, and where the `base-size'
|
||
argument is now always nil.
|
||
|
||
*** New function `completion-in-region' to use the standard completion
|
||
facilities on a particular region of text.
|
||
|
||
*** The 4th arg to all-completions (aka hide-spaces) is declared obsolete.
|
||
|
||
*** completion-annotate-function specifies how to compute annotations
|
||
for completions displayed in *Completions*.
|
||
|
||
** Minibuffer changes
|
||
|
||
*** read-file-name-predicate is obsolete. It was used to pass the predicate
|
||
to read-file-name-internal because read-file-name-internal abused its `pred'
|
||
argument to pass the current directory, but this hack is not needed
|
||
any more.
|
||
|
||
** Changes to file-manipulation functions
|
||
|
||
*** `delete-directory' has an optional parameter RECURSIVE.
|
||
|
||
*** New function `copy-directory', which copies a directory recursively.
|
||
|
||
** called-interactively-p now takes one argument and replaces interactive-p
|
||
which is now marked obsolete.
|
||
|
||
** New function set-advertised-calling-convention makes it possible
|
||
to obsolete arguments as well as make some arguments mandatory.
|
||
|
||
** You can control which binding is preferentially shown in menus and
|
||
docstrings by adding a `:advertised-binding' property to the corresponding
|
||
command's symbol. That property can hold a single binding or a list
|
||
of bindings.
|
||
|
||
** Network and process changes
|
||
|
||
*** start-process-shell-command and start-file-process-shell-command
|
||
now only take a single `command' argument.
|
||
|
||
*** The new variable `process-file-side-effects' should be set to nil
|
||
if a `process-file' call does not change a remote file. This allows
|
||
file name handlers such as Tramp to optimizations.
|
||
|
||
*** make-network-process can now also create `seqpacket' Unix sockets.
|
||
|
||
** Loading changes
|
||
|
||
*** eval-next-after-load is obsolete.
|
||
|
||
*** New hook `after-load-functions' run after loading an Elisp file.
|
||
|
||
** Byte compilation changes
|
||
|
||
*** Changing the file-names generated by byte-compilation by redefining
|
||
the function `byte-compile-dest-file' before loading bytecomp.el is obsolete.
|
||
Instead, customize byte-compile-dest-file-function.
|
||
|
||
*** `byte-compile-warnings' has new members, `constants' and `suspicious'.
|
||
|
||
** New macro with-silent-modifications to tweak text properties without
|
||
affecting the buffer's modification state.
|
||
|
||
** Hash tables have a new printed representation that is readable.
|
||
The feature `hashtable-print-readable' identifies this new
|
||
functionality.
|
||
|
||
** New functions for performing Unicode normalization:
|
||
ucs-normalize-NFD-region, ucs-normalize-NFD-string,
|
||
ucs-normalize-NFC-region, ucs-normalize-NFC-string,
|
||
ucs-normalize-NFKD-region, ucs-normalize-NFKD-string,
|
||
ucs-normalize-NFKC-region, ucs-normalize-NFKC-string,
|
||
ucs-normalize-HFS-NFD-region, ucs-normalize-HFS-NFD-string,
|
||
ucs-normalize-HFS-NFC-region, ucs-normalize-HFS-NFC-string.
|
||
|
||
** Face aliases can now be marked as obsolete, using the macro
|
||
`define-obsolete-face-alias'.
|
||
|
||
** New function `window-full-height-p', analogous to the full-width version.
|
||
|
||
|
||
* Changes in Emacs 23.2 on non-free operating systems
|
||
|
||
** On MS-Windows, `display-time' now displays the system load average
|
||
as well as the time, as it does on GNU and Unix.
|
||
|
||
|
||
* Installation Changes in Emacs 23.1
|
||
|
||
** The default X toolkit is now Gtk+, rather than Lucid.
|
||
The configure option `--with-gtk' has been removed. Gtk is now the
|
||
default toolkit, but you can use --with-x-toolkit=gtk if necessary.
|
||
|
||
** New font code.
|
||
Fonts are handled by new code capable of dealing with multiple font
|
||
backends. This uses the freetype and fontconfig libraries.
|
||
|
||
*** Emacs now accepts font names supplied in the fontconfig format
|
||
(e.g. "monospace-12:bold") and GTK format (e.g. "Monospace Bold 12").
|
||
|
||
*** Added support for local fonts (fonts installed on the machine
|
||
where Emacs is running).
|
||
|
||
*** Added support for the Xft library for antialiasing.
|
||
|
||
*** Added support for the otf library for complex text layout by
|
||
OpenType fonts.
|
||
|
||
*** Added support for the m17n library for text shaping.
|
||
|
||
** Changes to image support
|
||
|
||
*** configure now checks for libgif before libungif when searching for
|
||
a GIF library.
|
||
|
||
*** Emacs now supports the SVG image format through librsvg2.
|
||
|
||
*** Emacs now supports multi-page TIFF images.
|
||
|
||
** New NeXTstep-based port.
|
||
This provides support for GNUstep (via the GNUstep libraries) and Mac
|
||
OS X (via the Cocoa libraries).
|
||
|
||
Specify --with-ns to configure for this. By default, a self-contained
|
||
app will be built (containing all lisp). To install/share lisp with
|
||
other emacsen (e.g. X11 build) use --disable-ns-self-contained. See
|
||
nextstep/README and nextstep/INSTALL in the Emacs source directory.
|
||
|
||
** Mac OS X is no longer supported via Carbon.
|
||
Use the NeXTstep port, described above.
|
||
|
||
** The new configuration option "--with-dbus" enables D-Bus language
|
||
bindings for Emacs.
|
||
|
||
** Support for many obsolete platforms has been removed.
|
||
See the list at the end of etc/MACHINES for details.
|
||
|
||
*** Support for systems without alloca has been removed.
|
||
|
||
*** Support for Sun windows has been removed.
|
||
|
||
*** The `emacstool' utility has been removed.
|
||
|
||
** The following platforms will be removed in a future Emacs version:
|
||
If you are still using Emacs on one of these platforms, please email
|
||
emacs-devel@gnu.org to inform the Emacs developers.
|
||
|
||
*** Old GNU/Linux systems based on libc version 5.
|
||
|
||
*** Old FreeBSD, NetBSD, and OpenBSD systems based on the COFF
|
||
executable format.
|
||
|
||
*** Solaris versions 2.6 and below.
|
||
|
||
*** Solaris on IBM RS6000 machines.
|
||
|
||
*** UNIX System V (the original SysV, not later platforms based on it).
|
||
|
||
*** Unixware on non-x86 machines.
|
||
|
||
*** Platforms not supporting shared libraries (i.e., requiring the
|
||
NO_SHARED_LIBS compilation flag).
|
||
|
||
** The configure options `--with-gcc', `--without-gcc' have been removed.
|
||
Configure will use gcc by default. Set the CC environment variable if
|
||
you need control over which C compiler is used.
|
||
|
||
** The refcards are now shipped as PDF files.
|
||
|
||
** The manuals are now licensed under the GNU Free Documentation License v1.3,
|
||
or any later version.
|
||
|
||
** Emacs 23 comes with a new set of default icons.
|
||
Various resolutions are available as etc/images/icons/hicolor/*/apps/emacs.png.
|
||
The Emacs 22 icon is available as `emacs22.png' in the same location.
|
||
|
||
* Changes in Emacs 23.1
|
||
|
||
** Improved X Window System support
|
||
|
||
*** Emacs now supports using both X displays and ttys in one session.
|
||
With an Emacs server active (M-x server-start), `emacsclient -t'
|
||
creates a tty frame connected to the running emacs server. You can
|
||
use any number of different ttys. `emacsclient -c' creates a new X11
|
||
frame on the current $DISPLAY (or a tty frame if $DISPLAY is not set).
|
||
There may be problems if a display exits unexpectedly and Emacs is compiled
|
||
with Gtk+, see etc/PROBLEMS.
|
||
|
||
You can test for the presence of this feature in your Lisp code by
|
||
testing for the `multi-tty' feature.
|
||
|
||
*** Emacs starts in the background, as a daemon, when given the
|
||
--daemon command line argument. It disconnects from the terminal and
|
||
starts the server. Clients can connect and create graphical or
|
||
terminal frames using emacsclient.
|
||
|
||
**** emacsclient starts emacs in daemon mode and connects to it when
|
||
--alternate-editor="" is used (or when the environment variable
|
||
ALTERNATE_EDITOR is set to "") and emacsclient cannot connect to an
|
||
emacs server.
|
||
|
||
*** The new command close-display-connection closes a connection to a
|
||
remote display. There are some bugs for Gtk+. See etc/PROBLEMS.
|
||
|
||
*** Emacs now supports the XEmbed specification.
|
||
You can embed Emacs in another application on X11. The new command line
|
||
option --parent-id is used to pass the parent window id to Emacs. See
|
||
https://specifications.freedesktop.org/xembed-spec/xembed-spec-latest.html
|
||
for details about XEmbed.
|
||
|
||
*** Emacs can now set the frame opacity.
|
||
The opacity of a frame can be controlled by setting the `alpha' frame
|
||
parameter. This only takes effect on a compositing window manager for
|
||
the X Window System, such as Compiz, Beryl and Compiz Fusion, on Mac
|
||
OS X, or on Windows 2000 and later versions of Windows.
|
||
|
||
The alpha parameter should be an integer between 0 (transparent) and
|
||
100 (opaque), or a float number between 0.0 and 1.0. It can also be a
|
||
cons cell (ACTIVE . INACTIVE), where ACTIVE is the opacity of an
|
||
active frame and INACTIVE is the opacity of non-active frames.
|
||
|
||
The variable `frame-alpha-lower-limit' defines a lower bound for the
|
||
opacity; the default is 20.
|
||
|
||
** Internationalization changes
|
||
|
||
*** The Emacs character set is now a superset of Unicode.
|
||
(It has about four times the code space, which should be plenty).
|
||
|
||
The internal encoding used for buffers and strings is now
|
||
Unicode-based and called `utf-8-emacs' (`emacs-internal' is an alias
|
||
for this). This encoding is backward-compatible with Unicode's UTF-8
|
||
encoding. The internal encoding previously used by Emacs,
|
||
`emacs-mule', is still available for reading and writing files.
|
||
|
||
During byte-compilation, Emacs 23 uses `utf-8-emacs' to write files.
|
||
As a result, byte-compiled files containing non-ASCII characters can't
|
||
be read by earlier versions of Emacs. Files compiled by Emacs 20, 21,
|
||
or 22 are loaded correctly as `emacs-mule' (whether or not they
|
||
contain multibyte characters). This takes somewhat more time, so it
|
||
may be worth recompiling existing .elc files which don't need to be
|
||
shared with older Emacsen.
|
||
|
||
*** There are new coding systems/aliases; see M-x list-coding-systems.
|
||
|
||
*** There is a new charset implementation with many new charsets.
|
||
See M-x list-character-sets. New charsets can be defined conveniently
|
||
as tables of Unicode code points.
|
||
|
||
*** There are new language environments for Chinese-GBK,
|
||
Chinese-GB18030, Khmer, Bengali, Punjabi, Gujarati, Oriya, Telugu,
|
||
Sinhala, and TaiViet.
|
||
|
||
*** The minor modes unify-8859-on-encoding-mode and
|
||
unify-8859-on-decoding-mode are obsolete.
|
||
|
||
*** `ucs-insert' is bound to `C-x 8 RET' and in addition to hex numbers
|
||
accepts numbers in hash notation (e.g. #o21430 for octal, or #10r8984 for
|
||
decimal). It also accepts Unicode character names with completion.
|
||
|
||
*** The `cyrillic-translit' input method supports many new characters.
|
||
Common typographical characters available from Unicode were added to
|
||
`cyrillic-translit': punctuation marks, accented characters, fractions,
|
||
and others.
|
||
|
||
** Emacs now supports serial port access on GNU/Linux, Unix, and
|
||
Windows. The new command `serial-term' starts an interactive terminal
|
||
on a serial port. The serial port can be configured at runtime with
|
||
the mode-line mouse menu.
|
||
|
||
** Menu Bar changes
|
||
|
||
*** In the Options menu, the "Set Default Font" item applies the
|
||
selected font to the `default' face on all frames, not just the
|
||
current frame. Furthermore, if Emacs is compiled with both GTK and
|
||
Fontconfig support, the "Set Default Font" item uses the GTK font
|
||
selection dialog instead of an Emacs pop-up menu.
|
||
|
||
*** The font setting chosen by "Set Default Font" is saved if the
|
||
"Save Options" item is used.
|
||
|
||
*** The Tools menu contains a new Encryption/Decryption submenu.
|
||
This contains commands provided by EasyPG, the newly-included
|
||
interface to GnuPG (see New Modes and Packages).
|
||
|
||
*** In the Options menu, the "Truncate Long Lines in the Buffer" entry
|
||
has been replaced with a submenu offering three different ways to
|
||
handle long lines: truncation, continuation at the window edge, and
|
||
the new word wrapping behavior (see Editing Changes, below).
|
||
|
||
*** Improvements to menus for major and minor modes
|
||
More major and minor modes now have a mode specific menu, and existing
|
||
mode menus have been improved to include more functionality.
|
||
|
||
** Mode-line changes
|
||
|
||
*** The mode-line displays a `@', instead of `-', if the
|
||
default-directory for the current buffer is on a remote machine.
|
||
|
||
*** The mode-line displays a mode menu when mouse-1 is clicked on a
|
||
minor mode, in the same way as it already did for major modes.
|
||
|
||
*** The `mode-line-emphasis' face is used to highlight certain
|
||
mode-line information (e.g. waiting for a VC command to finish).
|
||
|
||
*** The mode-line tooltips have been improved to provide more details.
|
||
|
||
*** The VC, line/column number and minor mode indicators on the mode
|
||
line are now interactive: mouse-1 can be used on them to pop up a menu.
|
||
|
||
** File deletion can make use of the Recycle Bin or system Trash folder.
|
||
Set `delete-by-moving-to-trash' non-nil to use this. Deleted files
|
||
and directories will then be sent to the Recycle Bin on Windows, and
|
||
to `trash-directory' on other systems.
|
||
|
||
** Directory-local variables can now be defined.
|
||
By default, Emacs looks in .dir-locals.el for directory-local
|
||
variables. For more information, see `dir-locals-set-directory-class'
|
||
and `dir-locals-set-class-variables'.
|
||
|
||
** Emacs can now use `auth-source' for authentication.
|
||
`smtpmail' and `url' (Tramp and Gnus also) use `auth-source' to obtain
|
||
login names and passwords. The match, if found, is reported
|
||
in *Messages* with the password blanked out.
|
||
|
||
** `where-is-preferred-modifier' can specify your favorite modifier.
|
||
|
||
|
||
* Startup Changes in Emacs 23.1
|
||
|
||
** The option `inhibit-startup-screen' (with aliases to old names
|
||
`inhibit-splash-screen' and `inhibit-startup-message') doesn't inhibit
|
||
display of the initial message in the *scratch* buffer. If you don't
|
||
want to display the initial message in the *scratch* buffer at startup,
|
||
you can set the option `initial-scratch-message' to nil.
|
||
|
||
** New user option `initial-buffer-choice' specifies what to display
|
||
after starting Emacs: startup screen, *scratch* buffer, visiting a
|
||
file or directory.
|
||
|
||
** New alias `argv' for `command-line-args-left'
|
||
This is a convenience alias, so that one can write `(pop argv)'
|
||
inside of --eval command line arguments in order to access
|
||
following arguments.
|
||
|
||
** The abbrev file is no longer read at startup in batch mode.
|
||
|
||
** Emacs now supports invocation by an X session manager.
|
||
It can save a session and restore it later. See the documentation of
|
||
the functions `emacs-session-save' and `emacs-session-restore'.
|
||
(Actually, this feature was introduced with Emacs 22, but it was not
|
||
documented.)
|
||
|
||
* Incompatible Editing Changes in Emacs 23.1
|
||
|
||
** In Dired, `dired-flag-garbage-files' is rebound from `&' to `%&'
|
||
on the regexp command prefix map.
|
||
|
||
** In Dired-x, all command guesses for ! are now added to the default
|
||
list accessible by M-n instead of pushing all guesses temporarily into
|
||
the history list.
|
||
|
||
** In Isearch mode, a special case of typing `C-w' at the beginning of
|
||
the minibuffer that toggles word search (i.e. using key sequences
|
||
`C-s RET C-w' or `C-s M-e C-w') is obsolete. You can use the global key
|
||
`M-s w' to start word search, or type `M-s w' in Isearch mode to
|
||
toggle word search. To start nonincremental word search you can now use
|
||
`M-s w RET' and `M-s w C-r RET' instead of `C-s RET C-w' and `C-r RET C-w'.
|
||
|
||
** In Info, `Info-search' is unbound from `M-s' to allow using `M-s w'
|
||
for word search as well as other search commands from the global prefix
|
||
key `M-s'. `Info-search' is still bound to `s', and also incremental
|
||
search commands `C-s', `C-M-s', `C-r', `C-M-r' are available for searching
|
||
through multiple Info nodes, together with their nonincremental versions
|
||
`C-s RET', `C-r RET', `C-M-s RET', `C-M-r RET', `M-s w RET'.
|
||
|
||
** In Text mode, `center-line' and `center-paragraph' are rebound from
|
||
`M-s' and `M-S' to global keys `M-o M-s' and `M-o M-S' on the global
|
||
prefix map `M-o', which is intended for such formatting commands.
|
||
|
||
** The following input methods were removed in Emacs 22.2, but this was
|
||
not advertised: danish-alt-postfix, esperanto-alt-postfix,
|
||
finnish-alt-postfix, german-alt-postfix, icelandic-alt-postfix,
|
||
norwegian-alt-postfix, scandinavian-alt-postfix, spanish-alt-postfix,
|
||
and swedish-alt-postfix. Use the versions without "alt-", which are
|
||
identical.
|
||
|
||
|
||
* Editing Changes in Emacs 23.1
|
||
|
||
** The C-n and C-p line-motion commands now move by screen lines,
|
||
taking continued lines and variable-width characters into account.
|
||
Setting `line-move-visual' to nil reverts this to the previous
|
||
behavior (i.e., motion by logical lines based on buffer contents
|
||
alone).
|
||
|
||
** C-x C-c now invokes `save-buffers-kill-terminal', and C-z now
|
||
invokes `suspend-frame'. These changes are for compatibility with the
|
||
new multi-tty support (see `Improved X Window System support' above).
|
||
|
||
** Mark changes
|
||
|
||
*** Transient Mark mode is now on by default.
|
||
|
||
*** mark-even-if-inactive now defaults to t
|
||
|
||
*** When Transient Mark mode is on, C-SPC C-SPC pushes a mark without
|
||
activating it.
|
||
|
||
*** When Transient Mark mode is on, M-q now fills the region if the
|
||
region is active. Otherwise, it fills the current paragraph.
|
||
|
||
*** When Transient Mark mode is on, M-$ now checks spelling of the
|
||
region if the region is active. Otherwise, it checks spelling of the
|
||
word at point.
|
||
|
||
*** When Transient Mark mode is on, TAB now indents the region if the
|
||
region is active.
|
||
|
||
*** The variable `use-empty-active-region' controls whether an empty
|
||
active region in Transient Mark mode should make commands operate on
|
||
that empty region.
|
||
|
||
** Temporarily active regions
|
||
|
||
*** The new variable shift-select-mode, non-nil by default, controls
|
||
shift-selection. When Shift Select mode is on, shift-translated
|
||
motion keys (e.g. S-left and S-down) activate and extend a temporary
|
||
region, similar to mouse-selection.
|
||
|
||
*** Temporarily active regions, created using shift-selection or
|
||
mouse-selection, are not necessarily deactivated after the next command.
|
||
They are deactivated only after point motion commands that are not
|
||
shift-translated, or after commands that would ordinarily deactivate
|
||
the mark in Transient Mark mode (e.g., any command that modifies the
|
||
buffer).
|
||
|
||
** Minibuffer and completion changes
|
||
|
||
*** Emacs may ask for confirmation before opening a non-existent file
|
||
or buffer. By default, Emacs requests confirmation if you type RET
|
||
immediately after TAB, and the resulting input is not an existing file
|
||
or buffer; this usually happens when the minibuffer input did not
|
||
complete far enough and you entered RET by mistake. In that case,
|
||
Emacs puts the message "[Confirm]" in the minibuffer; type RET again
|
||
to create the file or buffer.
|
||
|
||
The new variable confirm-nonexistent-file-or-buffer determines whether
|
||
Emacs asks for confirmation. The default value is `after-completion'.
|
||
If you change it to t, Emacs always asks for confirmation; if you
|
||
change it to nil, Emacs never asks for confirmation.
|
||
|
||
*** The rules for performing completion have been changed.
|
||
When generating completion alternatives, Emacs now takes the
|
||
minibuffer text after point, if any, into account: this text is
|
||
treated as a substring of the remaining part of the completion
|
||
alternative (i.e., the part not matched by the minibuffer text before
|
||
point). If no completion alternatives are found this way, Emacs
|
||
attempts to perform partial-completion. If still no completion
|
||
alternatives are found, we fall back on the Emacs 22 rules for
|
||
performing completion.
|
||
|
||
The new variable `completion-styles' can be customized to choose your
|
||
favorite completion style.
|
||
|
||
*** When M-n in the minibuffer reaches the end of the list of defaults,
|
||
it adds the completion list to the end, so next M-n continues putting
|
||
completion items to the minibuffer. The same principle applies to
|
||
incremental search commands as well: C-s or C-M-s starts searching
|
||
the default values and after the end of defaults they continue
|
||
searching minibuffer completion items.
|
||
|
||
*** Minibuffer input of shell commands now comes with completion.
|
||
|
||
*** In the `C-x d' (Dired) prompt, typing M-n gives the visited file
|
||
name of the current buffer.
|
||
|
||
*** In the M-! (shell-command) prompt, M-n provides some default commands.
|
||
These are guessed using the file extension of the current file, based
|
||
on the file-handlers specified in the operating system's `mailcap'
|
||
file. The ! command in Dired (dired-do-shell-command) works
|
||
similarly, using the file displayed on the current line.
|
||
|
||
*** A list of regexp default values is available via M-n for `occur',
|
||
`keep-lines', `flush-lines' and `how-many'. This list includes the active
|
||
region in transient-mark-mode, the word under the cursor, the last Isearch
|
||
regexp, the last Isearch string and the last replacement regexp.
|
||
|
||
*** When enable-recursive-minibuffers is non-nil, operations which use
|
||
switch-to-buffer (such as C-x b and C-x C-f) do not fail any more when
|
||
used in a minibuffer or a dedicated window. Instead, they fallback on
|
||
using pop-to-buffer, which will use some other window. This change
|
||
has no effect when enable-recursive-minibuffers is nil (the default).
|
||
|
||
*** Isearch started in the minibuffer searches in the minibuffer history.
|
||
Reverse Isearch commands (C-r, C-M-r) search in previous minibuffer
|
||
history elements, and forward Isearch commands (C-s, C-M-s) search in
|
||
next history elements. When the reverse search reaches the first history
|
||
element, it wraps to the last history element, and the forward search
|
||
wraps to the first history element. When the search is terminated, the
|
||
history element containing the search string becomes the current.
|
||
|
||
*** The variable read-file-name-completion-ignore-case overrides
|
||
completion-ignore-case for file name completion.
|
||
|
||
*** The variable read-buffer-completion-ignore-case overrides
|
||
completion-ignore-case for buffer name completion.
|
||
|
||
*** The new command `minibuffer-force-complete' chooses one of the
|
||
possible completions, rather than stopping at the common prefix.
|
||
|
||
*** If `completion-auto-help' is `lazy', Emacs shows the completions
|
||
buffer only on the second attempt to complete. This was already
|
||
supported in `partial-completion-mode'.
|
||
|
||
** Face changes
|
||
|
||
*** S-down-mouse-1 now pops up a menu for changing the font and text
|
||
size of the default face in the current buffer. The face is changed
|
||
via face remapping (see Lisp changes, below).
|
||
|
||
*** New commands to change the default face size in the current buffer.
|
||
To increase it, type `C-x C-+' or `C-x C-='. To decrease it, type
|
||
`C-x C--'. To restore the default (global) face size, type `C-x C-0'.
|
||
These work via Text Scale mode, a new minor mode.
|
||
|
||
The final key in the above commands may be repeated without the
|
||
leading `C-x', e.g. `C-x C-= C-= C-=' increases the face height by
|
||
three steps. Each step scales the height of the default face by the
|
||
value of the variable `text-scale-mode-step'.
|
||
|
||
*** The commands buffer-face-mode and buffer-face-set can be used to
|
||
remap the default face in the current buffer. See "Buffer Face mode",
|
||
under New Modes and Packages.
|
||
|
||
** Primary selection changes
|
||
|
||
*** You can disable kill ring commands from accessing the primary
|
||
selection by setting `x-select-enable-primary' to nil.
|
||
|
||
** Continuation lines can now be wrapped at word boundaries
|
||
(word-wrapping). This is controlled by the new per-buffer variable
|
||
`word-wrap'. Word wrapping does not take place if continuation lines
|
||
are not shown, e.g. if truncate-lines is non-nil. The most convenient
|
||
way to enable word-wrapping is using the new minor mode Visual Line
|
||
mode; in addition to setting `word-wrap' to t, this rebinds some
|
||
editing commands to work on screen lines rather than text lines. See
|
||
New Modes and Packages, below.
|
||
|
||
** Window management changes
|
||
|
||
*** truncate-partial-width-windows now accepts integer values, which
|
||
specify a minimum window width for partial-width windows, below which
|
||
lines are truncated. The default has been changed to 50.
|
||
|
||
*** The new command balance-windows-area balances windows both
|
||
vertically and horizontally.
|
||
|
||
*** pop-to-buffer now always sets input focus when the popped-to window
|
||
is on a different frame.
|
||
|
||
** Miscellaneous changes:
|
||
|
||
*** C-l is bound to the new command recenter-top-bottom, rather than recenter.
|
||
This moves the current line to window center, top and bottom on
|
||
successive invocations.
|
||
|
||
*** scroll-preserve-screen-position also preserves the column position.
|
||
|
||
*** If `yank-pop-change-selection' is t, rotating the kill ring also
|
||
updates the selection or clipboard to the current yank, just as M-w
|
||
would do so with the text it copies to the kill ring.
|
||
|
||
*** C-M-% now shows replacement as it would look in the buffer, with
|
||
`\N' and `\&' substituted according to the match. Old behavior can be
|
||
restored by customizing `query-replace-show-replacement'.
|
||
|
||
*** The command shell prompts for the default directory, when it is
|
||
called with a prefix and the default directory is a remote file name.
|
||
This is because some file name handlers (like ange-ftp) are not able to
|
||
run processes remotely.
|
||
|
||
*** The new command kill-matching-buffers kills buffers whose name
|
||
matches a regexp.
|
||
|
||
*** The value of comment-style now defaults to `indent'.
|
||
Therefore, comment-start markers are inserted at the current indentation
|
||
of the region to comment, rather than the leftmost column.
|
||
|
||
*** The new commands `pp-macroexpand-expression' and
|
||
`pp-macroexpand-last-sexp' pretty-print macro expansions.
|
||
|
||
*** The new command `set-file-modes' allows to set file's mode bits.
|
||
The mode bits can be specified in symbolic notation, like with GNU
|
||
Coreutils, in addition to an octal number. `chmod' is a new
|
||
convenience alias for this function.
|
||
|
||
*** `next-error-recenter' specifies how next-error should recenter the
|
||
visited source file. Its value can be a number (for example, 0 for
|
||
top line, -1 for bottom line), or nil for no recentering.
|
||
|
||
*** When typing in a password in the echo area, C-y yanks the current
|
||
kill into the password.
|
||
|
||
*** Tooltip frame parameters `font' and `color' in `tooltip-frame-parameters'
|
||
are ignored. Customize the `tooltip' face instead.
|
||
|
||
*** `mkdir' is a new convenience alias for `make-directory'.
|
||
|
||
* New Modes and Packages in Emacs 23.1
|
||
|
||
** Auto Composition Mode is a minor mode that composes characters
|
||
automatically when they are displayed. It is globally on by default.
|
||
It uses `auto-composition-function' (default `auto-compose-chars').
|
||
|
||
** Bubbles, a new game, is similar to SameGame.
|
||
|
||
** Buffer Face mode is a minor mode for remapping the default face in
|
||
the current buffer. The variable `buffer-face-mode-face' specifies
|
||
the face to remap to. The command `buffer-face-set' prompts for a
|
||
face name, sets `buffer-face-mode-face' to it, and enables
|
||
buffer-face-mode. See "Face changes", under Editing Changes, for a
|
||
description of face remapping.
|
||
|
||
** butterfly flips the desired bit on the drive platter.
|
||
See http://xkcd.com/378/
|
||
|
||
** bug-reference.el provides clickable links to bug reports.
|
||
|
||
** dbus.el provides D-Bus language bindings.
|
||
D-Bus is an inter-process communication mechanism for applications
|
||
residing on the same host. See the manual for details.
|
||
|
||
** DocView mode allows viewing of PDF, PostScript and DVI documents.
|
||
One can also search for a regular expression in the document. For
|
||
details, see the commentary in doc-view.el.
|
||
|
||
PDF and DVI files are now opened in Doc View mode by default.
|
||
|
||
In PostScript mode, C-c C-c launches Doc View minor mode for viewing
|
||
the PostScript file.
|
||
|
||
** EasyPG provides an interface to the GNU Privacy Guard (GnuPG).
|
||
It includes a GnuPG keyring browser, cryptographic operations on
|
||
regions and files, and automatic encryption of *.gpg files. For
|
||
details, see the EasyPG Assistant User's Manual.
|
||
|
||
** json.el is a library for parsing and generating JSON
|
||
(JavaScript Object Notation), a lightweight data-interchange format.
|
||
|
||
** linum.el is a new minor mode to display line numbers for the
|
||
current buffer.
|
||
|
||
** mairix.el is an interface to mairix, a free tool for indexing and
|
||
searching locally stored mail. It allows you to query mairix and
|
||
display the search results with Rmail, Gnus and VM. Note that there
|
||
is an existing Gnus back end, nnmairix.el, which should be used with
|
||
Maildir/MH setups.
|
||
|
||
** minibuffer-depth-indicate-mode shows the minibuffer depth in the prompt.
|
||
|
||
** nXML Mode
|
||
This is a new mode for editing XML documents. It allows a schema to
|
||
be associated with the XML document being edited, using Relax NG as
|
||
the schema language. The schema is used to provide two key features:
|
||
|
||
*** Continuous validation. nXML validates as you type, highlighting
|
||
any invalid parts of your document.
|
||
|
||
*** Completion. nXML can assist you in entering an element name,
|
||
attribute name or data value by using information about what is
|
||
allowed by the schema in that context.
|
||
|
||
** proced.el provides a Dired-like interface for operating on
|
||
processes. Proced makes an Emacs buffer containing a listing of the
|
||
current processes. You can use the normal Emacs commands to move
|
||
around in this buffer, and special Proced commands to operate on the
|
||
processes listed. It is currently only functional on GNU/Linux,
|
||
MS-Windows and Solaris.
|
||
|
||
** Remember Mode is a mode for jotting down things to remember.
|
||
Notes can be saved to a Diary file. For details, see the Remember
|
||
Manual.
|
||
|
||
** RST mode is a major mode for editing reStructuredText files.
|
||
|
||
** Ruby mode is a major mode for Ruby files.
|
||
|
||
** Visual Line mode provides support for editing by visual lines.
|
||
It turns on word-wrapping in the current buffer, and rebinds C-a, C-e,
|
||
and C-k to commands that operate by visual lines instead of logical
|
||
lines. This is a more reliable replacement for longlines-mode.
|
||
This can also be turned on using the menu bar, via
|
||
Options -> Line Wrapping in this Buffer -> Word Wrap
|
||
|
||
** xesam.el is an implementation of Xesam, an interface to (desktop)
|
||
search engines like Beagle, Strigi, and Tracker. The Xesam API
|
||
requires D-Bus for communication.
|
||
|
||
** zeroconf.el offers service discovery and service publishing
|
||
interfaces according to the zeroconf specification. It communicates
|
||
with Avahi, a zeroconf implementation, via D-Bus messages on systems
|
||
which have installed this software.
|
||
|
||
** There is a new `whitespace' package.
|
||
(The pre-existing one has been renamed to `old-whitespace'.)
|
||
Now, besides reporting bogus blanks, the whitespace package has a
|
||
minor mode and a global minor mode to visualize blanks (TAB, (HARD)
|
||
SPACE and NEWLINE). The visualization is made via faces and/or display
|
||
table. It can also indicate lines that extend beyond a given column,
|
||
trailing blanks, and empty lines at the start or end of a buffer.
|
||
See `whitespace-style' for more details. The `whitespace-action' option
|
||
specifies what to do when a buffer is visited, killed, or written.
|
||
|
||
|
||
* Changes in Specialized Modes and Packages in Emacs 23.1
|
||
|
||
** Abbrev has been rewritten in Elisp and extended with more flexibility.
|
||
|
||
*** New functions: abbrev-get, abbrev-put, abbrev-table-get, abbrev-table-put,
|
||
abbrev-table-p, abbrev-insert, abbrev-table-menu.
|
||
|
||
*** Special hook `abbrev-expand-functions' obsoletes `pre-abbrev-expand-hook'.
|
||
|
||
*** `make-abbrev-table', `define-abbrev', `define-abbrev-table' all take
|
||
extra arguments for arbitrary properties.
|
||
|
||
*** New variable `abbrev-minor-mode-table-alist'.
|
||
|
||
*** `local-abbrev-table' can hold a list of abbrev-tables.
|
||
|
||
*** Abbrevs have now the following special properties:
|
||
`:count', `:system', `:enable-function', `:case-fixed'.
|
||
|
||
*** Abbrev-tables have now the following special properties:
|
||
`:parents', `:case-fixed', `:enable-function', `:regexp',
|
||
`abbrev-table-modiff'.
|
||
|
||
** Apropos
|
||
|
||
*** `apropos-library' describes the elements defined in a given library.
|
||
|
||
*** Set `apropos-compact-layout' is you want a more compact (but wider) layout.
|
||
|
||
** Archive Mode has basic support to browse Rar archives.
|
||
Note, however, that the free version of the unrar command only handles
|
||
versions 1 and 2 of the Rar format.
|
||
|
||
** BibTeX mode
|
||
|
||
*** New command `bibtex-initialize' (re)initializes BibTeX buffers.
|
||
|
||
*** New `bibtex-entry-format' options `whitespace', `braces', and
|
||
`string', disabled by default.
|
||
|
||
*** New variable `bibtex-cite-matcher-alist' contains rules to
|
||
identify cited keys in BibTeX entries, used by `bibtex-find-crossref'.
|
||
|
||
*** Command `bibtex-url' allows multiple URLs per entry.
|
||
|
||
** Bookmarks
|
||
|
||
*** bookmark.el saves bookmarks in a pre-Emacs-23-incompatible file format
|
||
bookmark.el can read a .emacs.bmk file saved by an older Emacs, but an
|
||
older Emacs cannot read one saved by Emacs 23.
|
||
|
||
** Calc
|
||
|
||
*** `j *' (cal-sel-mult-both-sides) has an option to expand the denominator.
|
||
|
||
*** `calc-embedded-word-regexp' is used for finding words in
|
||
`calc-embedded-word' in place of delimiters.
|
||
|
||
*** The separate Calc version number has been removed; use the Emacs
|
||
version for reference.
|
||
|
||
*** Support for using registers.
|
||
|
||
*** Support for Yacas, Maxima and Giac languages.
|
||
|
||
*** Addition of a menu.
|
||
|
||
*** Logistic non-linear curves have been added to curve-fitting.
|
||
|
||
*** New option to plot data points and curve when curve-fitting.
|
||
|
||
*** Unit conversions are now exact when possible.
|
||
|
||
*** The precedence of negation has been lowered.
|
||
|
||
** Calendar and diary
|
||
|
||
*** There is a new date style, `iso', essentially year/month/day.
|
||
The variable `european-calendar-style' is obsolete - use `calendar-date-style'.
|
||
Similarly, the commands `american-calendar' and `european-calendar'
|
||
should be replaced by `calendar-set-date-style'.
|
||
|
||
*** The calendar namespace has been rationalized.
|
||
All functions and variables now begin with a `calendar-', `diary-', or
|
||
`holiday-' prefix. The various calendar systems have secondary
|
||
prefixes, eg `calendar-french-'. The old names you are likely to use
|
||
directly still exist, for the time being, as aliases, but please start
|
||
using the new names.
|
||
|
||
*** The whitespace in the calendar layout can be customized.
|
||
See the variables:
|
||
calendar-left-margin, calendar-intermonth-spacing, calendar-column-width,
|
||
calendar-day-header-width, and calendar-day-digit-width.
|
||
|
||
*** Text (e.g. ISO weeks) can be displayed between the calendar months.
|
||
See the variables calendar-intermonth-header and calendar-intermonth-text.
|
||
|
||
*** The function `holiday-chinese' computes holidays on the Chinese calendar.
|
||
It has been used to add items to the list `holiday-oriental-holidays'.
|
||
|
||
*** `diary-remind' accepts a negative number -DAYS as a shorthand for
|
||
the list (1 2 ... DAYS).
|
||
|
||
** Change Log mode
|
||
|
||
*** The new command C-c C-f (change-log-find-file) finds the file
|
||
associated with the current log entry.
|
||
|
||
*** The new command C-c C-c (change-log-goto-source) goes to the
|
||
source code associated with a log entry.
|
||
|
||
** Compile and grep modes
|
||
|
||
*** The mode-line entry for the *compilation* and *grep* buffer is color coded.
|
||
It has different colors for to show that: (a) the command is still
|
||
running, (b) successful completion, (c) error.
|
||
|
||
*** compilation-auto-jump-to-first-error tells `compile' to jump to
|
||
the first error encountered during compilations.
|
||
|
||
*** compilation-scroll-output accepts a new value, `first-error', which
|
||
says to stop auto scrolling at the first error that occurs.
|
||
|
||
*** The `cc' alias for C++ files in `grep-file-aliases' has been
|
||
improved. `hh' can be used to match C++ header files and `cchh' both
|
||
C++ sources and headers.
|
||
|
||
** Copyright
|
||
|
||
*** You can specify your copyright holders' names.
|
||
Only copyright lines with holders matching `copyright-names-regexp' are
|
||
considered for update.
|
||
|
||
*** Copyrights can be at the end of the buffer.
|
||
This is controlled by `copyright-at-end-flag' (used by, e.g., change-log-mode).
|
||
|
||
** Custom
|
||
|
||
*** defcustom accepts new keyword arguments, `:safe' and `:risky', which
|
||
set a variable's `safe-local-variable' and `risky-local-variable' property.
|
||
|
||
** Diff mode
|
||
|
||
*** diff-refine-hunk highlights word-level details of changes in a diff hunk.
|
||
It's used automatically as you move through hunks, see
|
||
diff-auto-refine-mode. It is bound to `C-c C-b'.
|
||
|
||
*** diff-add-change-log-entries-other-window iterates through the diff
|
||
buffer and tries to create ChangeLog entries for each change.
|
||
It is bound to `C-x 4 A'.
|
||
|
||
*** Turning on `whitespace-mode' in a diff buffer will show trailing
|
||
whitespace problems in the modified lines.
|
||
|
||
** Dired
|
||
|
||
*** In Dired, C-x C-q now runs the command wdired-change-to-wdired-mode,
|
||
and C-x C-q in wdired-mode exits it with asking a question about
|
||
saving changes.
|
||
|
||
*** `&' runs the command `dired-do-async-shell-command' that executes
|
||
the command asynchronously without the need to manually add ampersand
|
||
to the end of the command. Its output appears in the buffer `*Async Shell
|
||
Command*'.
|
||
|
||
*** `M-s f C-s' and `M-s f M-C-s' run Isearch that matches only at file names.
|
||
When a new user option `dired-isearch-filenames' is t, then even ordinary
|
||
Isearch started with `C-s' and `C-M-s' matches only at file names in the
|
||
Dired buffer. When `dired-isearch-filenames' is `dwim' then activation of
|
||
file name Isearch depends on the position of point - if point is on a file
|
||
name initially, then Isearch matches only file names, otherwise it matches
|
||
everywhere in the Dired buffer. You can toggle file names matching on or
|
||
off by typing `M-s f' in Isearch mode.
|
||
|
||
*** `M-s a C-s' and `M-s a M-C-s' run multi-file Isearch on the marked files.
|
||
They visit the first marked file in the sequence and display the usual Isearch
|
||
prompt for a string or a regexp where all Isearch commands are available.
|
||
|
||
*** `Q' in Dired provides two new keys for multi-file replacement.
|
||
The upper case key `Y' replaces all remaining matches in all remaining files
|
||
with no more questions. The upper case key `N' stops doing replacements
|
||
in the current file and skips to the next file. These multi-file keys
|
||
are available for all commands that use `tags-query-replace'
|
||
including `dired-do-query-replace-regexp', `vc-dir-query-replace-regexp',
|
||
`reftex-query-replace-document'.
|
||
|
||
** Fortran
|
||
|
||
*** The line length of fixed-form Fortran is not fixed at 72 any more.
|
||
Customize the variable `fortran-line-length' to change it.
|
||
|
||
*** In Fortran mode, M-; is now bound to the standard comment-dwim,
|
||
rather than fortran-indent-comment.
|
||
|
||
*** (The increasingly misnamed) F90 mode supports Fortran 2003 syntax.
|
||
|
||
** Gnus
|
||
|
||
*** The Gnus package has been updated
|
||
There are many new features, bug fixes and improvements; see the file
|
||
GNUS-NEWS or the node "No Gnus" in the Gnus manual for details.
|
||
|
||
*** In Emacs 23, Gnus uses Emacs' new internal coding system `utf-8-emacs' for
|
||
saving articles, drafts, and ~/.newsrc.eld. These file may not be read
|
||
correctly in Emacs 22 and below. If you want to Gnus across different Emacs
|
||
versions, you may set `mm-auto-save-coding-system' to `emacs-mule'.
|
||
|
||
*** Passwords are consistently loaded through `auth-source'
|
||
Gnus can use `auth-source' for POP and IMAP passwords. Also see that
|
||
`smtpmail' and `url' support `auth-source' for SMTP and HTTP/HTTPS/RSS
|
||
authentication respectively.
|
||
|
||
** Help mode
|
||
|
||
*** New macro `with-help-window' should set up help windows better
|
||
than `with-output-to-temp-buffer' with `print-help-return-message'.
|
||
|
||
*** New option `help-window-select' permits to customize whether help
|
||
window shall be automatically selected when invoking help.
|
||
|
||
*** New variable `help-window-point-marker' permits one to specify a new
|
||
position for point in help window (for example in `view-lossage').
|
||
|
||
** Isearch
|
||
|
||
*** New command `isearch-forward-word' bound globally to `M-s w' starts
|
||
incremental word search. New command `isearch-toggle-word' bound to the
|
||
same key `M-s w' in Isearch mode toggles word searching on or off
|
||
while Isearch is active.
|
||
|
||
*** New command `isearch-highlight-regexp' bound to `M-s h r' in Isearch
|
||
mode runs `highlight-regexp' (`hi-lock-face-buffer') with the current
|
||
search string as its regexp argument. The same key `M-s h r' and
|
||
other keys on the `M-s h' prefix are bound globally to the command
|
||
`highlight-regexp' and other hi-lock commands.
|
||
|
||
*** New command `isearch-occur' bound to `M-s o' in Isearch mode
|
||
runs `occur' with the current search string. The same key `M-s o'
|
||
is bound globally to the command `occur'.
|
||
|
||
*** Isearch can now search through multiple ChangeLog files.
|
||
When running Isearch in a ChangeLog file, if the search fails,
|
||
then another C-s tries searching the previous ChangeLog,
|
||
if there is one (e.g. going from ChangeLog to ChangeLog.12).
|
||
This is enabled if multi-isearch-search is non-nil.
|
||
|
||
*** Two new commands to start Isearch on a list of marked buffers
|
||
for buff-menu.el and ibuffer.el are bound to the keys `M-s a C-s' and
|
||
`M-s a M-C-s'.
|
||
|
||
*** The part of an Isearch that failed to match is highlighted in
|
||
`isearch-fail' face.
|
||
|
||
*** `C-h C-h' in Isearch mode displays isearch-specific Help screen,
|
||
`C-h b' displays all Isearch key bindings, `C-h k' displays the full
|
||
documentation of the given Isearch key sequence, `C-h m' displays
|
||
documentation for Isearch mode. All the other Help commands exit
|
||
Isearch mode and execute their global definitions.
|
||
|
||
*** When started in the minibuffer, Isearch searches in the minibuffer
|
||
history. See `Minibuffer changes', above.
|
||
|
||
** MH-E
|
||
|
||
*** Upgraded to MH-E version 8.2. See MH-E-NEWS for details.
|
||
|
||
** Python
|
||
*** The file etc/emacs.py now supports both Python 2 and 3, meaning
|
||
that either version can be used as inferior Python by python.el.
|
||
|
||
*** Python mode now has `pdbtrack' functionality. When using pdb to
|
||
debug a Python program, pdbtrack notices the pdb prompt and displays
|
||
the source file and line that the program is stopped at, much the same
|
||
way as gud-mode does for debugging C programs with gdb.
|
||
|
||
** Recentf
|
||
|
||
*** The default value of `recentf-keep' prevents from checking of
|
||
remote files, if there is no established connection to the
|
||
corresponding remote host.
|
||
|
||
** Rmail
|
||
|
||
*** Rmail no longer converts the messages to Babyl format.
|
||
Instead, it uses UNIX mbox format, both on disk and in Rmail buffers,
|
||
and does conversion and decoding when a message is displayed.
|
||
|
||
The first time you visit an Rmail file in Babyl format, Rmail
|
||
automatically converts it to mbox format. This is a one-time
|
||
conversion, but it can take a few minutes, depending on how fast is
|
||
your machine and on the size of the file. You should find the rest of
|
||
Rmail usage unaltered.
|
||
|
||
However, M-x set-rmail-inbox-list now lasts only for one session
|
||
because there is no way to save the list of inbox files in an
|
||
mbox-format file.
|
||
|
||
Also, whereas with Babyl format M-x find-file would switch to Rmail
|
||
mode, with mbox format this is no longer the case (there being no way
|
||
to add an "-*- rmail-*-" cookie to an mbox file). Use C-u M-x rmail
|
||
instead.
|
||
|
||
If you have written any extensions to Rmail, they are likely to need
|
||
updating. Conceptually, the Rmail buffer that you see is no longer
|
||
just a narrowed portion of the whole. So you cannot access the whole
|
||
of a message (or message collection) by a simple save-restriction and
|
||
widen. Instead, there are two buffers: the rmail-buffer, and the
|
||
rmail-view-buffer. The former is the buffer that you see, the latter
|
||
is invisible. Most of the time, the invisible `view' buffer contains
|
||
the full contents of the Rmail file, and the Rmail buffer contains a
|
||
decoded copy of the current message (with only a subset of the
|
||
headers). In this state, Rmail is said to be `swapped'.
|
||
|
||
You may find the following functions useful:
|
||
|
||
`rmail-get-header' and `rmail-set-header' get or set the value of a
|
||
message header, whether or not it is currently visible.
|
||
|
||
`rmail-apply-in-message' is a general purpose function that calls a
|
||
function (with arguments) which you specify on the full text of a given
|
||
message. To further narrow to just the headers, search forward for "\n\n".
|
||
|
||
*** The new command `rmail-mime' displays MIME messages.
|
||
It is bound to `v' in Rmail buffers and summaries. It displays plain
|
||
text and multipart messages in a temporary buffer, and offers buttons
|
||
to save attachments.
|
||
|
||
*** The command `rmail-redecode-body' no longer accepts the optional arg RAW.
|
||
Since Rmail now holds messages in their original undecoded form in a
|
||
separate buffer, `rmail-redecode-body' no longer encodes the original
|
||
message, and therefore there should be no need to avoid encoding it.
|
||
|
||
*** The o command is now `rmail-output'. It is an all-purpose command
|
||
for copying messages from Rmail and appending them to files. It
|
||
handles Babyl-format files as well as mbox-format files, and it
|
||
handles both kinds properly when they are visited in Emacs. It always
|
||
copies the full headers of the message.
|
||
|
||
*** The C-o command is now `rmail-output-as-seen'. It uses
|
||
the message as displayed, appending it to an mbox file.
|
||
|
||
*** The modified status of the Rmail buffer is reported in the mode-line.
|
||
Previously, this information was hidden.
|
||
|
||
** TeX modes
|
||
|
||
*** New option latex-indent-within-escaped-parens
|
||
permits to customize indentation of LaTeX environments delimited
|
||
by escaped parens.
|
||
|
||
** T-mouse Mode
|
||
|
||
*** If the gpm mouse server is running and t-mouse-mode is enabled,
|
||
Emacs uses a Unix socket in a GNU/Linux console to talk to server,
|
||
rather than faking events using the client program mev. This C level
|
||
approach provides mouse highlighting and help echoing in the
|
||
minibuffer.
|
||
|
||
** Tramp
|
||
|
||
*** New connection methods.
|
||
The new methods "plinkx", "plink2", "psftp", "sftp" and "fish" have
|
||
been introduced. There are also new so-called gateway methods
|
||
"tunnel" and "socks".
|
||
|
||
*** IPv6 addresses.
|
||
IPv6 addresses are supported now as host names. They must be embedded
|
||
in square brackets, like in "/ssh:[::1]:".
|
||
|
||
*** Multihop syntax has been removed.
|
||
The pseudo-method "multi" has been removed. Instead, multi hops
|
||
can be specified by the new variable `tramp-default-proxies-alist'.
|
||
|
||
*** More default settings.
|
||
Default values can be set via the variables `tramp-default-user',
|
||
`tramp-default-user-alist' and `tramp-default-host'.
|
||
|
||
*** Connection information is cached.
|
||
In order to reduce connection setup, information about used
|
||
connections is kept persistently in a file. The name of this file is
|
||
defined in the variable `tramp-persistency-file-name'.
|
||
|
||
*** Control of remote processes.
|
||
Running processes on a remote host can be controlled by settings in
|
||
`tramp-remote-path' and `tramp-remote-process-environment'.
|
||
|
||
*** Success of remote copy is checked.
|
||
When the variable `file-precious-flag' is set, the success of a remote
|
||
file copy is checked via the file's checksum.
|
||
|
||
*** Passwords can be read from an authentication file.
|
||
Tramp uses the package `auth-source' to read passwords from a file, if
|
||
necessary.
|
||
|
||
** VC and related modes
|
||
|
||
*** VC now supports applying VC operations to a set of files at a time.
|
||
This enables VC to work much more effectively with changeset-oriented
|
||
version-control systems such as Subversion, GNU Arch, Mercurial, Git
|
||
and Bzr. VC will now pass a multiple-file commit to these systems as
|
||
a single changeset.
|
||
|
||
*** vc-dir is a new command that displays file names and their VC
|
||
status. It allows to apply various VC operations to a file, a
|
||
directory or a set of files/directories.
|
||
|
||
*** VC switches are no longer appended, rather the first non-nil value is used.
|
||
(This was for the most part true in Emacs 22, but was not advertised).
|
||
This is because there is an increasing variety of VC systems, and they
|
||
do not all accept the same "common" options. For example, a CVS diff
|
||
command used to append the values of `vc-cvs-diff-switches',
|
||
`vc-diff-switches', and `diff-switches'. Now the first non-nil value
|
||
from that sequence is used. The special value `t' means "no switches".
|
||
|
||
*** Clicking on the VC mode-line entry now pops the VC menu.
|
||
|
||
*** The VC mode-line entry now has a tooltip that explains the VC file status.
|
||
|
||
*** In VC Annotate mode, the key bindings have changed to use lower
|
||
case keys instead of the upper case keys used in the past.
|
||
|
||
*** In VC Annotate mode, for VC systems that support changesets, you can
|
||
see the diff for the whole changeset (not only for the current file)
|
||
by typing the D key. Using the "Show changeset diff of revision at
|
||
line" menu entry does the same thing.
|
||
|
||
*** In VC Annotate mode, you can type v to toggle the annotation visibility.
|
||
|
||
*** In VC Annotate mode, you can type f to show the file revision on
|
||
the current line.
|
||
|
||
*** Asynchronous VC commands display [Waiting...] in the mode-line
|
||
of the corresponding buffer as long as the asynchronous process is
|
||
active.
|
||
|
||
*** Log entries can be modified using the key "e" in log-view.
|
||
For now only CVS, RCS, SCCS and SVN support this functionality.
|
||
This is done by the `modify-change-comment' backend function.
|
||
|
||
*** In log-view-mode, for VC systems that support changesets, you can
|
||
see the diff for the whole changeset (not only for the current file)
|
||
by typing the D key or using the "Changeset Diff" menu entry.
|
||
|
||
*** In Log Edit mode, C-c C-d now shows the diff for the files involved.
|
||
|
||
*** vc-git supports the "git grep" command.
|
||
|
||
*** VC Support for Meta-CVS has been removed for lack of a maintainer able
|
||
to update it to the new VC.
|
||
|
||
** Miscellaneous
|
||
|
||
*** comint-mode uses `start-file-process' now (see Lisp Changes).
|
||
If `default-directory' is a remote file name, subprocesses are started
|
||
on the corresponding remote system.
|
||
|
||
*** ElDoc highlights the function argument under point
|
||
with the face `eldoc-highlight-function-argument'.
|
||
|
||
*** In Etags, the --members option is now the default.
|
||
Use --no-members if you want the old default behavior of not tagging
|
||
struct members in C, members variables in C++ and variables in PHP.
|
||
|
||
*** The `gdb' command only works with the graphical interface now.
|
||
Use `gud-gdb' if you want the (old) text command mode.
|
||
|
||
*** goto-address.el provides two new minor modes, goto-address-mode and
|
||
goto-address-prog-mode, which buttonize URLS and email addresses.
|
||
|
||
*** The new command `eshell/info' runs info in an eshell buffer.
|
||
|
||
*** The new variable `ffap-rfc-directories' specifies a list of local
|
||
directories in which `ffap-rfc' will first search for RFCs.
|
||
|
||
*** hide-ifdef-mode allows shadowing ifdef-blocks instead of hiding them.
|
||
See option `hide-ifdef-shadow' and function `hide-ifdef-toggle-shadowing'.
|
||
|
||
*** `icomplete-prospects-height' now supersedes `icomplete-prospects-length'.
|
||
|
||
*** Info displays breadcrumbs in the header of the page.
|
||
See Info-breadcrumbs-depth to control it.
|
||
|
||
*** net-utils has an `iwconfig' command, similar to the existing `ifconfig'.
|
||
It is used to configure wireless interfaces.
|
||
|
||
*** The pcmpl-unix package supports hostname completion for ssh and scp.
|
||
|
||
*** sgml-electric-tag-pair-mode lets you simultaneously edit matched tag pairs.
|
||
|
||
*** smerge-refine highlights word-level details of changes in conflict.
|
||
It's used automatically as you move through conflicts, see
|
||
smerge-auto-refine-mode.
|
||
|
||
*** talk.el has been extended for multiple tty support.
|
||
|
||
*** A new command `display-time-world' has been added to the Time
|
||
package. It creates a buffer with an updating time display using
|
||
several time zones.
|
||
|
||
*** The appearance of superscript and subscript in TeX is more customizable.
|
||
See the documentation of the variables: tex-fontify-script,
|
||
tex-font-script-display, tex-suscript-height-ratio, and
|
||
tex-suscript-height-minimum.
|
||
|
||
*** view-remove-frame-by-deleting is now by default t
|
||
since users found iconification of view-mode frames distracting.
|
||
|
||
*** WoMan tries to add locale-specific manual page directories to the
|
||
search path. This can be disabled by setting `woman-locale' to nil.
|
||
|
||
|
||
* Changes in Emacs 23.1 on non-free operating systems
|
||
|
||
** Case is now considered significant in completion on MS-Windows.
|
||
The default value of `completion-ignore-case' is now nil on
|
||
MS-Windows, the same as it is for other operating systems. The
|
||
variable doesn't apply to reading a file name -- in that case Emacs
|
||
heeds `read-file-name-completion-ignore-case' instead.
|
||
|
||
** IPv6 is supported on MS-Windows.
|
||
Emacs now supports IPv6 on Windows XP and later, and earlier versions
|
||
of Windows with third party IPv6 stacks installed. In Emacs 22, IPv6 was
|
||
supported on other platforms, but not on Windows due to using the winsock
|
||
1.1 header file, even though Emacs was linking to the winsock 2 library.
|
||
|
||
** Busy cursor (hourglass) now displays on MS-Windows.
|
||
When Emacs is busy, an hourglass mouse cursor is displayed on Windows.
|
||
In Emacs 22 only X supported the busy cursor.
|
||
|
||
** Battery status is available on MS-Windows
|
||
Emacs can now display the battery status in the mode-line when enabled with
|
||
display-battery-mode or from the Options menu. More verbose battery
|
||
information is also available with the command `battery'. In Emacs 22
|
||
battery status was supported only on GNU/Linux and Mac.
|
||
|
||
** More keys available on MS-Windows.
|
||
Keys normally associated with IMEs, and some exotic keys not normally found
|
||
on standard keyboards have been given names so they can be bound to functions
|
||
inside Emacs. If there are keys on your keyboard that have not been exposed
|
||
to Emacs in the past, try C-h k to see if they are available now.
|
||
|
||
Emacs can now bind functions to the extra buttons for media player and
|
||
browser control present on some keyboards. These buttons are disabled
|
||
by default, since enabling them prevents their system-wide use when
|
||
Emacs has focus. To enable them, set the variable
|
||
w32-pass-multimedia-buttons to nil. See the doc string of that variable
|
||
for the list of extra keys that are available.
|
||
|
||
** BDF fonts no longer supported on MS-Windows.
|
||
The font backend was completely rewritten for this release. The focus
|
||
on Windows has been getting acceptable performance and full Unicode
|
||
support, including complex script shaping for native Windows fonts. A
|
||
rewrite of the BDF font support has not happened due to lack of time
|
||
and developers. If demand still exists for such a backend even with
|
||
the improved language support for native Windows fonts, future
|
||
development in this direction will most likely be based on the
|
||
freetype library, giving access to a wider range of font formats.
|
||
|
||
|
||
* Incompatible Lisp Changes in Emacs 23.1
|
||
|
||
** Variables cannot be both buffer-local and frame-local any more.
|
||
|
||
** `functionp' returns nil for special forms.
|
||
I.e., it only returns t for objects that can be passed to `funcall'.
|
||
|
||
** The behavior of map-char-table has changed. It may call the
|
||
specified function with a cons (FROM . TO) as a key if characters in
|
||
that range have the same value.
|
||
|
||
** Process changes
|
||
|
||
*** The function `dired-call-process' has been removed.
|
||
|
||
*** The multibyteness of process filters is now determined by the
|
||
coding-system used for decoding. The functions
|
||
`process-filter-multibyte-p' and `set-process-filter-multibyte' are
|
||
obsolete.
|
||
|
||
** The variable `byte-compile-warnings' can now be a list starting with `not',
|
||
meaning to disable the specified warnings. The meaning of this list
|
||
may therefore be the reverse of what you expect (of course, this is
|
||
only an issue if you make use of the new `not' syntax). Rather than
|
||
checking/manipulating elements directly, use the new functions
|
||
`byte-compile-warning-enabled-p', `byte-compile-disable-warning', and
|
||
`byte-compile-enable-warning.'
|
||
|
||
** `mode-name' is no longer guaranteed to be a string.
|
||
Use `(format-mode-line mode-name)' to ensure a string value.
|
||
|
||
** The function x-font-family-list has been removed.
|
||
Use the new function font-family-list (see Lisp Changes, below).
|
||
|
||
** Internationalization changes
|
||
|
||
*** The value of the function `charset-id' is now always 0.
|
||
|
||
*** The functions `register-char-codings' and `coding-system-spec'
|
||
have been removed.
|
||
|
||
*** The cpXXX coding systems are now supported automatically.
|
||
The functions cp-...-codepage, which you had to use in Emacs 22 to
|
||
enable support for these coding systems, have been deleted.
|
||
|
||
*** The following features have been removed. They were used for
|
||
displaying various scripts with specific fonts, and are no longer
|
||
needed now that OpenType font support is available:
|
||
|
||
**** `devanagari' and `devan-util', and all associated devanagari-* and
|
||
dev-* functions and variables (formerly used for Devanagari script).
|
||
|
||
**** `kannada' and `knd-util', and all associated kannada-* and knd-*
|
||
functions and variables (formerly used for Kannada script).
|
||
|
||
**** `malayalam' and `mlm-util', and all associated malayalam-* and
|
||
mlm-* functions and variables (formerly used for Malayalam script).
|
||
|
||
**** `tamil' and `tml-util, and all associated tamil-* and tml-*
|
||
functions and variables (formerly used for Tamil script).
|
||
|
||
*** The meaning of NAME argument of `set-fontset-font' is changed.
|
||
Previously nil is accepted as the default fontset. Now, nil is for
|
||
the fontset of the selected frame and t is for the default fontset.
|
||
|
||
*** The meaning of FONTSET argument of `print-fontset' is changed.
|
||
Now, nil is for the fontset of the selected frame and t is for the
|
||
default fontset.
|
||
|
||
** If a function in write-region-annotate-functions returns with a
|
||
different buffer current, Emacs no longer kills that buffer
|
||
automatically. This behavior existed in previous versions of Emacs,
|
||
but was undocumented. To kill a buffer after write-region, give the
|
||
variable `write-region-post-annotation-function' a buffer-local value
|
||
of `kill-buffer'.
|
||
|
||
** The variable temp-file-name-pattern has been removed.
|
||
This variable was only used by call-process-region, which now uses
|
||
temporary-file-directory instead.
|
||
|
||
** The COUNT and SYSTEM-FLAG arguments to define-abbrev have been
|
||
removed. The function now takes extra arguments for specifying
|
||
arbitrary abbrev properties.
|
||
|
||
** end-of-defun-function is now guaranteed to work only when called
|
||
from the start of a defun. It must now leave point exactly at the end
|
||
of defun, since `end-of-defun' now itself moves forward over
|
||
whitespace after calling it.
|
||
|
||
|
||
* Lisp Changes in Emacs 23.1
|
||
|
||
** The new variable `generate-autoload-cookie' controls the magic comment
|
||
string used by `update-file-autoloads' to find autoloaded forms. The
|
||
variable `generated-autoload-file' similarly controls the name of the
|
||
file where `update-file-autoloads' writes the calls to `autoload'.
|
||
The default values are ";;;###autoload" and `loaddefs.el',
|
||
respectively.
|
||
|
||
** New primitives `list-system-processes' and `process-attributes'
|
||
let Lisp programs access the processes that are running on the local
|
||
machine. See the doc strings of these functions for more details.
|
||
Not all platforms support accessing this information; on those that
|
||
don't, these primitives will return nil.
|
||
|
||
** New variable `user-emacs-directory'.
|
||
Use this instead of "~/.emacs.d".
|
||
|
||
** If a local hook function has a non-nil `permanent-local-hook'
|
||
property, `kill-all-local-variables' does not remove it from the local
|
||
value of the hook variable; it remains even if you change major modes.
|
||
|
||
** `frame-inherited-parameters' lets new frames inherit parameters from
|
||
the selected frame.
|
||
|
||
** New keymap `input-decode-map' overrides like key-translation-map, but
|
||
applies before function-key-map. Also it is terminal-local contrary to
|
||
key-translation-map. Terminal-specific key-sequences are generally added to
|
||
this map rather than to function-key-map now.
|
||
|
||
** `ignore-errors' is now a standard macro (does not require the CL package).
|
||
|
||
** `interprogram-paste-function' can now return one string or a list
|
||
of strings. In the latter case, Emacs puts the second and following
|
||
strings on the kill ring.
|
||
|
||
** In `condition-case', a handler can specify "let the debugger run first".
|
||
You do this by writing `debug' in the list of conditions to be handled,
|
||
like this:
|
||
|
||
(condition-case nil
|
||
(foo bar)
|
||
((debug error) nil))
|
||
|
||
** clone-indirect-buffer now runs the clone-indirect-buffer-hook.
|
||
|
||
** `beginning-of-defun-function' now takes one argument, the count given to
|
||
`beginning-of-defun'. (N.B. `end-of-defun-function' doesn't take any
|
||
arguments.)
|
||
|
||
** `file-remote-p' has new optional parameters IDENTIFICATION and CONNECTED.
|
||
IDENTIFICATION specifies which part of the remote identifier has to be
|
||
returned. With CONNECTED passed non-nil, it is checked whether a
|
||
remote connection has been established already.
|
||
|
||
** The new macro `declare-function' suppresses compiler warnings about
|
||
undefined functions.
|
||
|
||
** Changes to interactive function handling
|
||
|
||
*** The new interactive spec code ^ says to first call
|
||
handle-shift-selection if shift-select-mode is non-nil, before reading
|
||
the command arguments. This is used for shift-selection (see above).
|
||
|
||
*** Built-in functions can now have an interactive specification that
|
||
is not a prompt string. If the `intspec' parameter of a `DEFUN'
|
||
starts with a `(', the string is evaluated as a Lisp form.
|
||
|
||
*** The interactive-form of a function can be added post-facto via the
|
||
`interactive-form' symbol property. Mostly useful to add complex
|
||
interactive forms to subroutines.
|
||
|
||
** Region changes
|
||
|
||
*** Commands should use `use-region-p' to test whether there is
|
||
an active region that they should operate on.
|
||
|
||
*** `region-active-p' returns non-nil when Transient Mark mode is
|
||
enabled and the mark is active. Most commands that act specially on
|
||
the active region in Transient Mark mode should use `use-region-p'
|
||
instead of `region-active-p', because `use-region-p' obeys the new
|
||
user option `use-empty-active-region' (see Editing Changes, above).
|
||
|
||
*** If a command sets `transient-mark-mode' to (only . OLDVAL), that
|
||
means to activate transient-mark-mode temporarily, until the next
|
||
unshifted point motion command or mark deactivation. Afterwards,
|
||
reset transient-mark-mode to the value OLDVAL. The values `only' and
|
||
`identity', introduced in Emacs 22, are now deprecated.
|
||
|
||
** Emacs session information
|
||
|
||
*** The new variables `before-init-time' and `after-init-time' record the
|
||
value of `current-time' before and after Emacs loads the init files.
|
||
|
||
*** The new function `emacs-uptime' returns the uptime of an Emacs instance.
|
||
|
||
*** The new function `emacs-init-time' returns the duration of the
|
||
Emacs initialization.
|
||
|
||
** Changes affecting display-buffer
|
||
|
||
*** display-buffer tries to be smarter when splitting windows.
|
||
The new option split-window-preferred-function lets you specify your own
|
||
function to pop up new windows. Its default value split-window-sensibly
|
||
can split a window either vertically or horizontally, whichever seems
|
||
more suitable in the current configuration. You can tune the behavior
|
||
of split-window-sensibly by customizing split-height-threshold and the
|
||
new option split-width-threshold. Both options now take the value nil
|
||
to inhibit splitting in one direction. Setting split-width-threshold to
|
||
nil inhibits horizontal splitting and gets you the behavior of Emacs 22
|
||
in this respect. In any case, display-buffer may now split the largest
|
||
window vertically even when it is not as wide as the containing frame.
|
||
|
||
*** If pop-up-frames has the value `graphic-only', display-buffer only
|
||
makes a separate frame on graphic displays.
|
||
|
||
*** select-frame and set-frame-selected-window have a new optional
|
||
argument NORECORD. If non-nil, this will avoid messing with the order
|
||
of recently selected windows and the buffer list.
|
||
|
||
** Window parameters can now be defined.
|
||
These are analogous to frame parameters, but are associated with
|
||
individual windows.
|
||
|
||
*** The new functions window-parameters, window-parameter, and
|
||
set-window-parameter are used to query and set window parameters.
|
||
|
||
** Minibuffer and completion changes
|
||
|
||
*** A list of default values can be specified for the DEFAULT argument of
|
||
functions `read-from-minibuffer', `read-string', `read-command',
|
||
`read-variable', `read-buffer', `completing-read'. Elements of this list
|
||
are available for inserting into the minibuffer by typing `M-n'.
|
||
For empty input these functions return the first element of this list.
|
||
|
||
*** New function `read-regexp' uses the regexp history and some useful
|
||
regexp defaults (string at point, last Isearch/replacement regexp/string)
|
||
via M-n when reading a regexp in the minibuffer.
|
||
|
||
*** minibuffer-local-must-match-filename-map is now named
|
||
minibuffer-local-filename-must-match-map.
|
||
|
||
*** The `require-match' argument to `completing-read' accepts the new
|
||
values `confirm-only' and `confirm-after-completion'.
|
||
|
||
** Search and replacement changes
|
||
|
||
*** The regexp form \(?<num>:<regexp>\) specifies the group number explicitly.
|
||
|
||
*** New function `match-substitute-replacement' returns the result of
|
||
`replace-match' without actually using it in the buffer.
|
||
|
||
*** The new variable `replace-search-function' determines the function
|
||
to use for searching in query-replace and replace-string. The
|
||
function it specifies is called by `perform-replace' when its 4th
|
||
argument is nil.
|
||
|
||
*** The new variable `replace-re-search-function' determines the
|
||
function to use for searching in `query-replace-regexp',
|
||
`replace-regexp', `query-replace-regexp-eval', and
|
||
`map-query-replace-regexp'. The function it specifies is called by
|
||
`perform-replace' when its 4th argument is non-nil.
|
||
|
||
*** New keymap `search-map' bound to `M-s' provides global bindings
|
||
for search related commands.
|
||
|
||
*** New keymap `multi-query-replace-map' contains additional keys bound
|
||
to `automatic-all' and `exit-current' for multi-buffer interactive replacement.
|
||
|
||
*** The variable `inhibit-changing-match-data', if non-nil, prevents
|
||
the search and match primitives from changing the match data.
|
||
|
||
*** New functions `word-search-forward-lax' and `word-search-backward-lax'.
|
||
These are like `word-search-forward and `word-search-backward', except
|
||
that the end of the search string need not match a word boundary,
|
||
unless it ends in whitespace.
|
||
|
||
** File handling changes
|
||
|
||
*** set-file-modes is now interactive and can take the mode value in
|
||
symbolic notation thanks to auxiliary functions.
|
||
|
||
*** file-local-variables-alist stores an alist of file-local
|
||
variables defined in the current buffer.
|
||
|
||
** Face-remapping
|
||
|
||
*** Each face can be remapped to a different face definition using the
|
||
variable `face-remapping-alist'. This is an alist that maps faces to
|
||
replacement definitions (which can be face names, lists of face names,
|
||
or attribute/value plists. If this variable is buffer-local, the
|
||
remapping occurs only in that buffer.
|
||
|
||
*** text-scale-mode remaps the default face to a larger or smaller
|
||
size in the current buffer. This feature is used by the Buffer Face
|
||
menu and the new `C-x C-+', `C-x C--', and `C-x C-0' commands (see
|
||
Editing Changes, above).
|
||
|
||
*** New functions:
|
||
|
||
**** `face-remap-add-relative' adds a face remapping entry to the
|
||
current buffer.
|
||
|
||
**** ``face-remap-remove-relative' removes a face remapping entry from
|
||
the current buffer.
|
||
|
||
**** `face-remap-reset-base' restores a face to its global definition.
|
||
|
||
**** `face-remap-set-base' sets the base remapping of a face.
|
||
|
||
** Process changes
|
||
|
||
*** The new function `start-file-process' is similar to `start-process',
|
||
but obeys file handlers. The file handler is chosen based on
|
||
`default-directory'. The functions `start-file-process-shell-command'
|
||
and `process-file-shell-command' are also new; they call internally
|
||
`start-file-process' and `process-file', respectively.
|
||
|
||
*** The new function `process-lines' executes an external program and
|
||
returns its output as a list of lines.
|
||
|
||
** Character code, representation, and charset changes.
|
||
|
||
*** In multibyte buffers and strings, characters are represented by
|
||
UTF-8 byte sequences. The character code space is now 0x0..0x3FFFFF
|
||
with no gap; code points 0x0..0x10FFFF are Unicode characters of the
|
||
same code points, while code points 0x3FFF80..0x3FFFFF are raw 8-bit
|
||
bytes.
|
||
|
||
*** Generic characters no longer exist.
|
||
|
||
*** The concept of a charset has changed. A single character may
|
||
belong to multiple charsets (e.g. a-grave, U+00E0, belongs to charsets
|
||
unicode, iso-8859-1, iso-8859-3, etc).
|
||
|
||
**** The dimension of a charset is now 1, 2, 3, or 4, and the size of
|
||
each dimension is no longer limited to 94 or 96.
|
||
|
||
**** A dynamic charset priority list is used to infer the charset of
|
||
characters for display.
|
||
|
||
*** The functions `split-char' and `make-char' now accept up to 4
|
||
positional codes instead of just 2.
|
||
|
||
*** The functions `encode-char' and `decode-char' now accept any character sets.
|
||
|
||
*** The function `define-charset' now accepts a completely different
|
||
form of arguments (old-style arguments still work).
|
||
|
||
*** The value of the function `char-charset' depends on the current
|
||
priorities of charsets.
|
||
|
||
*** The function get-char-code-property now accepts many Unicode base
|
||
character properties. They are `name', `general-category',
|
||
`canonical-combining-class', `bidi-class', `decomposition',
|
||
`decimal-digit-value', `digit-value', `numeric-value', `mirrored',
|
||
`old-name', `iso-10646-comment', `uppercase', `lowercase', and
|
||
`titlecase'.
|
||
|
||
*** The functions `modify-syntax-entry' and `modify-category-entry' now
|
||
accept a cons of characters as the first argument, and modify all
|
||
entries in that range of characters.
|
||
|
||
*** Use of `translation-table-for-input' for character code unification
|
||
is now obsolete, since Emacs 23.1 and later uses Unicode as basis for
|
||
internal representation of characters.
|
||
|
||
*** New functions:
|
||
|
||
**** `characterp' returns t if and only if the argument is a character.
|
||
This replaces `char-valid-p', which is now obsolete.
|
||
|
||
**** `max-char' returns the maximum character code (currently #x3FFFFF).
|
||
|
||
**** `define-charset-alias' defines an alias of a charset.
|
||
|
||
**** `set-charset-priority' sets priorities of charsets.
|
||
|
||
**** `charset-priority-list' returns a prioritized list of charsets.
|
||
|
||
**** `unibyte-string' makes a unibyte string from bytes.
|
||
|
||
**** `define-char-code-property' defines a character code property.
|
||
|
||
**** `char-code-property-description' returns the description string of
|
||
a character code property.
|
||
|
||
*** New variables:
|
||
|
||
**** `find-word-boundary-function-table' is a char-table of functions to
|
||
search for a word boundary.
|
||
|
||
**** `char-script-table' is a char-table of script names.
|
||
|
||
**** `char-width-table' is a char-table of character widths.
|
||
|
||
**** `print-charset-text-property' controls how to handle `charset' text
|
||
property on printing a string.
|
||
|
||
**** `printable-chars' is a char-table of printable characters.
|
||
|
||
** Code conversion changes
|
||
|
||
*** The new function `define-coding-system' should be used to define a
|
||
coding system instead of `make-coding-system' (which is now obsolete).
|
||
|
||
*** The functions `encode-coding-region' and `decode-coding-region'
|
||
have an optional 4th argument to specify where the result of
|
||
conversion should go.
|
||
|
||
*** The functions `encode-coding-string' and `decode-coding-string'
|
||
have an optional 4th argument specifying a buffer to store the result
|
||
of conversion.
|
||
|
||
*** The new variable `inhibit-null-byte-detection' controls whether to
|
||
consider text with null bytes as binary data. By default, it is
|
||
`nil', and Emacs uses `no-conversion' for any text containing null
|
||
bytes.
|
||
|
||
*** The functions `set-coding-priority' and `make-coding-system' are obsolete.
|
||
|
||
*** New functions:
|
||
|
||
**** `with-coding-priority' executes Lisp code using the specified
|
||
coding system priority order.
|
||
|
||
**** `check-coding-systems-region' checks if the text in the region is
|
||
encodable by the specified coding systems.
|
||
|
||
**** `coding-system-aliases' returns a list of aliases of a coding system.
|
||
|
||
**** `coding-system-charset-list' returns a list of charsets supported
|
||
by a coding system.
|
||
|
||
**** `coding-system-priority-list' returns a list of coding systems
|
||
ordered by their priorities.
|
||
|
||
**** `set-coding-system-priority' sets priorities of coding systems.
|
||
|
||
**** `coding-system-from-name' returns a coding system matching with
|
||
the argument name.
|
||
|
||
** There is a new input method, Robin, different from Quail.
|
||
It has three functionalities:
|
||
i) a simple input method (converts an ASCII sequence into a string).
|
||
ii) converts an existing buffer substring into another string
|
||
iii) reverse conversion (each character produced by a
|
||
robin rule can hold the original ASCII sequence as a char-code-property)
|
||
|
||
*** The new function `robin-define-package' defines a Robin package.
|
||
|
||
*** The new function `robin-modify-package' modifies an existing Robin package.
|
||
|
||
*** The new function `robin-use-package' starts using a Robin package
|
||
as an input method.
|
||
|
||
*** The new function `string-to-unibyte' is like `string-as-unibyte'
|
||
but signals an error if STRING contains a non-ASCII, non-eight-bit
|
||
character.
|
||
|
||
** Changes related to the new font backend
|
||
|
||
*** Which font backends to use can be specified by the X resource
|
||
"FontBackend". For instance, to use both X core fonts and Xft fonts:
|
||
|
||
Emacs.FontBackend: x,xft
|
||
|
||
If this resource is not set, Emacs tries to use all font backends
|
||
available on your graphic device.
|
||
|
||
*** New frame parameter `font-backend' specifies a list of
|
||
font-backends supported by the frame's graphic device. On X, they are
|
||
currently `x' and `xft'.
|
||
|
||
*** The function `set-fontset-font' now accepts a script name as the
|
||
second argument, and has an optional 5th argument to control how to
|
||
set the font.
|
||
|
||
*** New functions:
|
||
|
||
**** `fontp' checks if the argument is a font-spec or font-entity.
|
||
|
||
**** `font-spec' creates a new font-spec object.
|
||
|
||
**** `font-get' returns a font property value.
|
||
|
||
**** `font-put' sets a font property value.
|
||
|
||
**** `font-face-attributes' returns a plist of face attributes set by a font.
|
||
|
||
**** `list-fonts' returns a list of font-entities matching a font spec.
|
||
|
||
**** `find-font' returns the font-entity best matching the given font spec.
|
||
|
||
**** `font-family-list' returns a list of family names of available fonts.
|
||
|
||
**** `font-xlfd-name' returns an XLFD name of a given font spec, font
|
||
entity, or font object.
|
||
|
||
**** `clear-font-cache' clears all font caches.
|
||
|
||
** Changes related to multiple-terminal (multi-tty) support
|
||
|
||
*** $TERM is now set to `dumb' for subprocesses. If you want to know the
|
||
$TERM inherited by Emacs you will have to look inside initial-environment.
|
||
|
||
*** $DISPLAY is now dynamically inherited from the frame's `display'.
|
||
|
||
*** The `window-system' variable is now frame-local. The new
|
||
`initial-window-system' variable contains the `window-system' value
|
||
for the first frame. `window-system' is also now a function that
|
||
takes a frame argument.
|
||
|
||
*** The `keyboard-translate-table' variable and the terminal and
|
||
keyboard coding systems are now terminal-local.
|
||
|
||
*** You can specify a terminal device (`tty' parameter) and a terminal
|
||
type (`tty-type' parameter) to `make-terminal-frame'.
|
||
|
||
*** The function `make-frame-on-display' now works during a tty
|
||
session.
|
||
|
||
*** A new `terminal' data type.
|
||
The functions `get-device-terminal', `terminal-parameters',
|
||
`terminal-parameter', `set-terminal-parameter' use this data type.
|
||
|
||
*** Function key sequences are now mapped using `local-function-key-map',
|
||
a new variable. This inherits from the global variable function-key-map,
|
||
which is not used directly any more.
|
||
|
||
*** New hooks:
|
||
|
||
**** before-hack-local-variables-hook is called after setting new
|
||
variable file-local-variables-alist, and before actually applying the
|
||
file-local variables.
|
||
|
||
**** `suspend-tty-functions' and `resume-tty-functions' are called
|
||
after a tty frame has been suspended or resumed, respectively. The
|
||
functions are called with the terminal id of the frame being
|
||
suspended/resumed as a parameter.
|
||
|
||
**** The special hook `delete-terminal-functions' is called before
|
||
deleting a terminal.
|
||
|
||
*** New functions:
|
||
|
||
**** `delete-terminal'
|
||
|
||
**** `suspend-tty'
|
||
|
||
**** `resume-tty'.
|
||
|
||
*** `initial-environment' holds the environment inherited from Emacs's parent.
|
||
|
||
** Redisplay changes
|
||
|
||
*** For underlined characters, the distance between the underline and
|
||
the baseline is controlled by a new variable, `underline-minimum-offset'.
|
||
|
||
*** You can now pass the value of the `invisible' property to
|
||
invisible-p to check whether it would cause the text to be invisible.
|
||
This is convenient when checking invisibility of text with no buffer
|
||
position (e.g. in before/after-strings).
|
||
|
||
*** `clear-image-cache' can be told to flush only images of a specific file.
|
||
|
||
*** `vertical-motion' can now be given a goal column.
|
||
It now accepts a cons cell (COLS . LINES) in its first argument, which
|
||
says to stop, where possible, at a pixel x-position equal to COLS
|
||
times the default column width.
|
||
|
||
*** redisplay-end-trigger-functions, set-window-redisplay-end-trigger,
|
||
and window-redisplay-end-trigger are obsolete. Use `jit-lock-register'
|
||
instead.
|
||
|
||
*** The new variables `wrap-prefix' and `line-prefix' specify display
|
||
specs which are appended at display-time to every continuation line
|
||
and non-continuation line, respectively. In addition, Emacs
|
||
recognizes the `wrap-prefix' and `line-prefix' text or overlay
|
||
properties; these have the same effects as the variables of the same
|
||
name, but take precedence.
|
||
|
||
** The Lisp interpreter now treats non-breaking space as whitespace.
|
||
|
||
** Miscellaneous new functions
|
||
|
||
*** `apply-partially' performs a "curried" application of a function.
|
||
|
||
*** `buffer-swap-text' swaps text between two buffers. This can be
|
||
useful for modes such as tar-mode, archive-mode, RMAIL.
|
||
|
||
*** `combine-and-quote-strings' produces a single string from a list of strings
|
||
sticking a separator string in between each pair, and quoting those
|
||
strings that include the separator as their substring. Useful for
|
||
consing shell command lines from the individual arguments.
|
||
|
||
*** `custom-note-var-changed' tells Custom to treat the change in a
|
||
certain variable as having been made within Custom.
|
||
|
||
*** `face-all-attributes' returns an alist describing all the basic
|
||
attributes of a given face.
|
||
|
||
*** `format-seconds' converts a number of seconds into a readable
|
||
string of days, hours, etc.
|
||
|
||
*** `image-refresh' refreshes all images associated with a given image
|
||
specification.
|
||
|
||
*** `locate-user-emacs-file' helps packages to select the appropriate
|
||
place to save user-specific files. It defaults to `user-emacs-directory'
|
||
unless the file already exists at $HOME.
|
||
|
||
*** `read-color' reads a color name using the minibuffer.
|
||
|
||
*** `read-shell-command' does what its name says, with completion. It
|
||
uses the minibuffer-local-shell-command-map for that.
|
||
|
||
*** `split-string-and-unquote' splits a string into a list of substrings
|
||
on the boundaries of a given delimiter, and unquotes the substrings that
|
||
are quoted. Useful for taking apart shell commands.
|
||
|
||
*** The two new functions `looking-at-p' and `string-match-p' can do
|
||
the same matching as `looking-at' and `string-match' without changing
|
||
the match data.
|
||
|
||
*** The two new functions `make-serial-process' and
|
||
`serial-process-configure' provide a Lisp interface to the new serial
|
||
port support (see Emacs changes, above).
|
||
|
||
** Miscellaneous new variables
|
||
|
||
*** `auto-save-include-big-deletions', if non-nil, means auto-save is
|
||
not turned off automatically after a big deletion.
|
||
|
||
*** `read-circle', if nil, disables the reading of recursive Lisp
|
||
structures using the #N= and #N# syntax.
|
||
|
||
*** `this-command-keys-shift-translated' is non-nil if the key
|
||
sequence invoking the current command was found by shift-translation.
|
||
|
||
*** `window-point-insertion-type' determines the insertion-type of the
|
||
marker used for window-point.
|
||
|
||
*** bookmark provides `bookmark-make-record-function' so special major
|
||
modes like Info can teach bookmark.el how to save and restore the
|
||
relevant data.
|
||
|
||
*** `fill-forward-paragraph-function' specifies which function the
|
||
filling code should use to find paragraph boundaries.
|
||
|
||
|
||
* New Packages for Lisp Programming in Emacs 23.1
|
||
|
||
** The new package avl-tree.el deals with the AVL tree data structure.
|
||
|
||
** The new package check-declare.el verifies the accuracy of
|
||
declare-function macros (see Lisp Changes, above).
|
||
|
||
** find-cmd.el can build `find' commands using lisp syntax.
|
||
|
||
** The package misearch.el has been added. It allows Isearch to search
|
||
through multiple buffers. A variable `multi-isearch-next-buffer-function'
|
||
defines the function to call to get the next buffer to search in the series
|
||
of multiple buffers. Top-level functions `multi-isearch-buffers',
|
||
`multi-isearch-buffers-regexp', `multi-isearch-files' and
|
||
`multi-isearch-files-regexp' accept a single argument that specifies
|
||
a list of buffers/files to search for a string/regexp.
|
||
|
||
** The new major mode `special-mode' is intended as a parent for
|
||
major modes such as those that set the "'mode-class 'special" property.
|
||
|
||
|
||
----------------------------------------------------------------------
|
||
This file is part of GNU Emacs.
|
||
|
||
GNU Emacs is free software: you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation, either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
GNU Emacs is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
|
||
|
||
|
||
Local variables:
|
||
mode: outline
|
||
paragraph-separate: "[ ]*$"
|
||
end:
|