# emacs / etc / NEWS

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Copyright (C) 2010-2011 Free Software Foundation, Inc. See the end of the file for license conditions. Please send Emacs bug reports to bug-gnu-emacs@gnu.org. If possible, use M-x report-emacs-bug. This file is about changes in Emacs version 24. See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18, and NEWS.1-17 for changes in older Emacs versions. You can narrow news to a specific version by calling view-emacs-news' with a prefix argument or by typing C-u C-h C-n. Temporary note: +++ indicates that the appropriate manual has already been updated. --- means no change in the manuals is called for. When you add a new item, please add it without either +++ or --- so we will look at it and add it to the manual. * Installation Changes in Emacs 24.1 ** Configure links against libselinux if it is found. You can disable this by using --without-selinux. --- ** By default, the installed Info and man pages are compressed. You can disable this by configuring --without-compress-info. --- ** There are new configure options: --with-mmdf, --with-mail-unlink, --with-mailhost. These provide no new functionality, they just remove the need to edit lib-src/Makefile by hand in order to use the associated features. --- ** Emacs can be compiled against Gtk+ 3.0 if you pass --with-x-toolkit=gtk3 to configure. Note that other libraries used by Emacs, RSVG and GConf, also depend on Gtk+. You can disable them with --without-rsvg and --without-gconf. --- ** There is a new configure option --enable-use-lisp-union-type. This is only useful for Emacs developers to debug certain types of bugs. This is not a new feature; only the configure flag is new. --- ** There is a new configure option --with-wide-int. With it, Emacs integers typically have 62 bits, even on 32-bit machines. --- ** New translation of the Emacs Tutorial in Hebrew is available. Type C-u C-h t' to choose it in case your language setup doesn't automatically select it. ** Emacs can be compiled with ImageMagick support. Emacs links to ImageMagick if version 6.2.8 or newer of the library is present at build time. To inhibit ImageMagick, use the configure option --without-imagemagick' . --- ** The standalone programs digest-doc and sorted-doc are removed. Emacs now uses Lisp commands doc-file-to-man' and doc-file-to-info'. --- ** The standalone program fakemail' is removed. If you need it, feedmail.el provides a superset of the functionality. * Startup Changes in Emacs 24.1 --- ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte command line arguments, and the EMACS_UNIBYTE environment variable, no longer have any effect. (They were declared obsolete in Emacs 23.) +++ ** New command line option --no-site-lisp' removes site-lisp directories from load-path. -Q now implies this. --- ** On Windows, Emacs now warns when the obsolete _emacs init file is used, and also when HOME is set to C:\ by default. * Changes in Emacs 24.1 +++ ** auto-mode-case-fold is now enabled by default. ** Completion *** shell-mode uses pcomplete rules, with the standard completion UI. *** Many packages have been changed to use completion-at-point rather than their own completion code. *** Completion in a non-minibuffer now tries to detect the end of completion and pops down the *Completions* buffer accordingly. *** Completion can cycle, depending on completion-cycle-threshold. *** New completion style substring'. *** Completion style can be set per-category completion-category-overrides'. *** Completion of buffers now uses substring completion by default. *** completing-read' can be customized using the new variable completing-read-function'. *** minibuffer-local-filename-must-match-map is not used any more. Instead, the bindings in minibuffer-local-filename-completion-map are combined with minibuffer-local-must-match-map. ** Mail changes The default of send-mail-function' is now sendmail-query-once', which asks the user (once) whether to use the smtpmail package to send email, or to use the old defaults that rely on external mail facilities (sendmail-send-it' on GNU/Linux and other Unix-like systems, and mailclient-send-it' on Windows). *** smtpmail changes **** smtpmail now uses encrypted connections (via STARTTLS) if the mail server supports them. It also uses the auth-source framework for getting credentials. **** The variable smtpmail-auth-credentials' has been removed. That variable used to have the default value "~/.authinfo", in which case you won't see any difference. But if you changed it to be a list of user names and passwords, that setting is now ignored; you will be prompted for the user name and the password, which will then be saved to ~/.authinfo. You can also manually copy the credentials to your ~/.authinfo file. For example, if you had (setq smtpmail-auth-credentials '(("mail.example.org" 25 "jim" "s!cret"))) then the equivalent line in ~/.authinfo would be machine mail.example.org port 25 login jim password s!cret **** The variable smtpmail-starttls-credentials' has been removed. If you had that set, then then you need to put machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert" in your ~/.authinfo file instead. *** sendmail changes +++ You can now add MIME attachments to outgoing messages with the new command mail-add-attachment'. --- The command mail-attach-file' was renamed to mail-insert-file'; the old name is now an obsolete alias to the new name. ** Emacs server and client changes +++ *** New option server-port' specifies the port on which the Emacs server should listen. +++ *** New emacsclient argument -q/--quiet suppresses some status messages. +++ *** New emacsclient argument --frame-parameters can be used to set the frame parameters of a newly-created graphical frame. +++ *** If emacsclient shuts down as a result of Emacs signalling an error, its exit status is 1. +++ *** New emacsclient argument --parent-id ID. This opens a client frame in parent X window ID, via XEmbed, similar to the --parent-id argument to Emacs. ** Internationalization changes +++ *** Emacs now supports display and editing of bidirectional text. Text that includes characters from right-to-left (RTL) scripts, such as Arabic, Farsi, or Hebrew, is displayed in the correct visual order as expected by users of those scripts. This display reordering is a "Full bidirectionality" class implementation of the Unicode Bidirectional Algorithm. Buffers RTL text should look exactly the same as before. For more information, see the node "Bidirectional Editing" in the Emacs Manual. +++ **** New buffer-local variable bidi-display-reordering'. To disable display reordering in any given buffer, change this to nil. +++ **** New buffer-local variable bidi-paragraph-direction'. If nil (the default), Emacs determines the base direction of each paragraph from its text, as specified by the Unicode Bidirectional Algorithm. Setting this to right-to-left' or left-to-right' forces a particular base direction on each paragraph in the buffer. Paragraphs whose base direction is right-to-left are displayed starting at the right margin of the window. +++ *** Enhanced support for characters with no glyphs in available fonts. If a character has no glyphs in any of the available fonts, Emacs normally displays it either as a hexadecimal code in a box or as a thin 1-pixel space. In addition to these two methods, Emacs can display these characters as empty box, as an acronym, or not display them at all. To change how these characters are displayed, customize the variable glyphless-char-display-control'. On character terminals, these methods are used for characters that cannot be encoded by the terminal-coding-system'. --- *** New input methods for Farsi: farsi and farsi-translit. ** Improved GTK integration *** GTK scroll-bars are now placed on the right by default. Use set-scroll-bar-mode' to change this. *** GTK tool bars can have just text, just images or images and text. Customize tool-bar-style' to choose style. On a Gnome desktop, the default is taken from the desktop settings. *** GTK tool bars can be placed on the left/right or top/bottom of the frame. The frame-parameter tool-bar-position controls this. It takes the values top, left, right or bottom. The Options => Show/Hide menu has entries for this. *** The colors for selected text (the region face) are taken from the GTK theme when Emacs is built with GTK. *** Emacs uses GTK tooltips by default if built with GTK. You can turn that off by customizing x-gtk-use-system-tooltips. +++ ** New basic faces error', warning', success' are available to highlight strings that indicate failure, caution or successful operation. ** Lucid menus and dialogs can display antialiased fonts if Emacs is built with Xft. To change font, use the X resource font, for example: Emacs.pane.menubar.font: Courier-12 ** On graphical displays, the mode-line no longer ends in dashes. Also, the first dash (which does not indicate anything) is just displayed as a space. ** Basic SELinux support has been added. This requires Emacs to be linked with libselinux at build time. *** Emacs preserves the SELinux file context when backing up, and optionally when copying files. To this end, copy-file has an extra optional argument, and backup-buffer and friends include the SELinux context in their return values. *** The new functions file-selinux-context and set-file-selinux-context get and set the SELinux context of a file. *** Tramp offers handlers for file-selinux-context and set-file-selinux-context for remote machines which support SELinux. +++ ** The function format-time-string now supports the %N directive, for higher-resolution time stamps. ** Changes for exiting Emacs +++ *** The function kill-emacs is now run upon receipt of the signals SIGTERM and SIGHUP, and upon SIGINT in batch mode. +++ *** kill-emacs-hook is now also run in batch mode. If you have code that adds something to kill-emacs-hook, you should consider if it is still appropriate to add it in the noninteractive case. ** Scrolling changes *** New scrolling commands scroll-up-command' and scroll-down-command' (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom of buffer at first key-press (instead move to top/bottom of buffer) when a new variable scroll-error-top-bottom' is non-nil. *** New scrolling commands scroll-up-line' and scroll-down-line' scroll a line instead of full screen. *** New property scroll-command' should be set on a command's symbol to define it as a scroll command affected by scroll-preserve-screen-position'. +++ *** If you customize scroll-conservatively' to a value greater than 100, Emacs will never recenter point in the window when it scrolls due to cursor motion commands or commands that move point (e.f., M-g M-g'). Previously, you needed to use most-positive-fixnum' as the value of scroll-conservatively' to achieve the same effect. --- *** Aggressive'' scrolling now honors the scroll margins. If you customize scroll-up-aggressively' or scroll-down-aggressively' and move point off the window, Emacs now scrolls the window so as to avoid positioning point inside the scroll margin. ** Trash changes +++ *** delete-by-moving-to-trash' now only affects commands that specify trashing. This avoids inadvertently trashing temporary files. +++ *** Calling delete-file' or delete-directory' with a prefix argument now forces true deletion, regardless of delete-by-moving-to-trash'. ** New option list-colors-sort' defines the color sort order for list-colors-display'. ** An Emacs Lisp package manager is now included. This is a convenient way to download and install additional packages, from a package repository at http://elpa.gnu.org. +++ *** M-x list-packages' shows a list of packages, which can be selected for installation. +++ *** New command describe-package', bound to C-h P'. +++ *** By default, all installed packages are loaded and activated automatically when Emacs starts up. To disable this, set package-enable-at-startup' to nil. To change which packages are loaded, customize package-load-list'. ** Custom Themes *** M-x customize-themes' lists Custom themes which can be enabled. *** New option custom-theme-load-path' is the load path for themes. Emacs no longer looks for custom themes in load-path'. The default is to search in custom-theme-directory', followed by a built-in theme directory named "themes/" in data-directory'. *** New option custom-safe-themes' records known-safe theme files. If a theme is not in this list, Emacs queries before loading it, and offers to save the theme to custom-safe-themes' automatically. By default, all themes included in Emacs are treated as safe. ** The user option remote-file-name-inhibit-cache' controls whether the remote file-name cache is used for read access. ** File- and directory-local variable changes +++ *** You can stop directory local vars from applying to subdirectories. Add an element (subdirs . nil) to the alist portion of any variables settings to indicate that the section should not apply to subdirectories. *** Directory local variables can apply to some file-less buffers. Affected modes include dired, vc-dir, and log-edit. For example, adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will turn on whitespace-mode' for *vc-diff* buffers. Modes should call hack-dir-local-variables-non-file-buffer' to support this. +++ *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated. Instead, use "eval: (minor-mode 1)". +++ ** The variable focus-follows-mouse' now always defaults to nil. ** New primitive secure-hash' that supports many secure hash algorithms including md5, sha-1 and sha-2 (sha-224, sha-256, sha-384 and sha-512). The elisp implementation sha1.el is removed. Feature sha1 is provided by default. ** Menu-bar changes *** menu-bar-select-buffer-function' lets you choose another operation instead of switch-to-buffer' when selecting an item in the Buffers menu. ** The inactive minibuffer has its own major mode minibuffer-inactive-mode'. This is handy for minibuffer-only frames, and is also used for the "mouse-1 pops up *Messages*" feature, which can now easily be changed. * Editing Changes in Emacs 24.1 ** Search changes +++ *** C-y in Isearch is now bound to isearch-yank-kill, instead of isearch-yank-line. --- *** M-y in Isearch is now bound to isearch-yank-pop, instead of isearch-yank-kill. +++ *** M-s C-e in Isearch is now bound to isearch-yank-line. +++ ** New command count-words-region'. This does what you expect. ** completion-at-point now handles tags and semantic completion. ** The default value of backup-by-copying-when-mismatch' is now t. ** The command just-one-space' (C-SPC), if given a negative argument, also deletes newlines around point. ** Deletion changes *** New option delete-active-region'. If non-nil, [delete] and DEL delete the region if it is active and no prefix argument is given. If set to kill', these commands kill instead. *** New command delete-forward-char', bound to [delete]. This is meant for interactive use, and obeys delete-active-region'. The command delete-char' does not obey delete-active-region'. *** delete-backward-char' is now a Lisp function. Apart from obeying delete-active-region', its behavior is unchanged. However, the byte compiler now warns if it is called from Lisp; you should use delete-char with a negative argument instead. --- *** The option mouse-region-delete-keys' has been deleted. ** Selection changes. The default handling of clipboard and primary selections was changed to conform with modern X applications. In short, most commands for killing and yanking text now use the clipboard, while mouse commands use the primary selection. In the following, we provide a list of these changes, followed by a list of steps to get the old behavior back if you prefer that. +++ *** select-active-regions' now defaults to t. Merely selecting text (e.g. with drag-mouse-1) no longer puts it in the kill ring. The selected text is put in the primary selection, if the system possesses a separate primary selection facility (e.g. X). +++ **** select-active-regions' also accepts a new value, only'. This means to only set the primary selection for temporarily active regions (usually made by mouse-dragging or shift-selection); "ordinary" active regions, such as those made with C-SPC followed by point motion, do not alter the primary selection. --- **** mouse-drag-copy-region' now defaults to nil. +++ *** mouse-2 is now bound to mouse-yank-primary'. This pastes from the primary selection, ignoring the kill-ring. Previously, mouse-2 was bound to mouse-yank-at-click'. +++ *** x-select-enable-clipboard' now defaults to t on all platforms. +++ *** x-select-enable-primary' now defaults to nil. Thus, commands that kill text or copy it to the kill-ring (such as M-w, C-w, and C-k) also use the clipboard---not the primary selection. --- **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now exactly equivalent to, respectively M-w, C-w, and C-y. --- **** Note that on MS-Windows, x-select-enable-clipboard' was already non-nil by default, as Windows does not support the primary selection between applications. --- *** To return to the previous behavior, do the following: **** Change select-active-regions' to nil. **** Change mouse-drag-copy-region' to t. **** Change x-select-enable-primary' to t (on X only). **** Change x-select-enable-clipboard' to nil. **** Bind mouse-yank-at-click' to mouse-2. +++ *** Support for X cut buffers has been removed. *** X clipboard managers are now supported. To inhibit this, change x-select-enable-clipboard-manager' to nil. ** New command rectangle-number-lines', bound to C-x r N', numbers the lines in the current rectangle. With a prefix argument, this prompts for a number to count from and for a format string. ** The command shell prompts for the shell path name, when the default directory is a remote file name and neither environment variable $ESHELL nor variable explicit-shell-file-name' is set. * Changes in Specialized Modes and Packages in Emacs 24.1 ** Archive Mode has basic support for browsing and updating 7z archives. ** browse-url has a new variable browse-url-mailto-function' specifies how mailto: URLs are handled. The default is browse-url-mail'. ** BibTeX mode *** BibTeX mode now supports biblatex. Use the variable bibtex-dialect to select support for different BibTeX dialects. bibtex-entry-field-alist is now an obsolete alias for bibtex-BibTeX-entry-alist. *** New command bibtex-search-entries' bound to C-c C-a. *** New bibtex-entry-format' option sort-fields', disabled by default. *** New variable bibtex-search-entry-globally'. ** Calendar, Diary, and Appt +++ *** Diary entries can contain non-printing comments'. See the variable diary-comment-start'. +++ *** Appointments can specify their individual warning times. See the variable appt-warning-time-regexp'. --- *** The function specified by appt-disp-window-function' may be passed lists of arguments if multiple appointments are due at similar times. If you are using a custom function for this, you should update it. +++ *** New function diary-hebrew-birthday'. --- *** Elements of calendar-day-abbrev-array' and calendar-month-abbrev-array' may no longer be nil, but must all be strings. --- *** The obsolete (since Emacs 22.1) method of enabling the appt package by adding appt-make-list to diary-hook has been removed. Use appt-activate. --- *** Some appt variables (obsolete since Emacs 22.1) have been removed: appt-issue-message (use the function appt-activate) appt-visible/appt-msg-window (use the variable appt-display-format) --- *** Some diary function aliases (obsolete since Emacs 22.1) have been removed: view-diary-entries, list-diary-entries, show-all-diary-entries ** CC Mode (C, C++, etc.) *** New feature to "guess" the style in an existing buffer. ** comint and modes derived from it use the generic completion code. ** Compilation mode *** Compilation mode can be used without font-lock-mode. compilation-parse-errors-function' is now obsolete. *** compilation-filter-start' is let-bound to the start of the text inserted by the compilation filter function, when calling compilation-filter-hook. ** Customize *** Customize buffers now contain a search field. The search is performed using customize-apropos'. To turn off the search field, set custom-search-field to nil. *** Custom options now start out hidden if at their default values. Use the arrow to the left of the option name to toggle visibility. *** custom-buffer-sort-alphabetically now defaults to t. *** The color widget now has a "Choose" button, which allows you to choose a color via list-colors-display. ** D-Bus *** It is possible now, to access alternative buses than the default system or session bus. *** dbus-register-{service,method,property} The -method and -property functions do not automatically register names anymore. The new function dbus-register-service registers a service known name on a D-Bus without simultaneously registering a property or a method. ** Dired-x *** dired-jump and dired-jump-other-window called with a prefix argument read a file name from the minibuffer instead of using buffer-file-name. +++ *** The dired local variables' feature provided by Dired-x is obsolete. The standard directory local variables feature replaces it. ** ERC changes *** New vars erc-autojoin-timing' and erc-autojoin-delay'. If the value of erc-autojoin-timing' is 'ident, ERC autojoins after a successful NickServ identification, or after erc-autojoin-delay' seconds. The default value, 'ident, means to autojoin immediately after connecting. *** New variable erc-coding-system-precedence': If we use undecided' as the server coding system, this variable will then be consulted. The default is to decode strings that can be decoded as utf-8 as utf-8, and do the normal undecided' decoding for the rest. ** Eshell changes *** The default value of eshell-directory-name is a directory named "eshell" in user-emacs-directory'. If the old "~/.eshell/" directory exists, that is used instead. ** gdb-mi *** GDB User Interface migrated to GDB Machine Interface and now supports multithread non-stop debugging and debugging of several threads simultaneously. ** In ido-mode, C-v is no longer bound to ido-toggle-vc. The reason is that this interferes with cua-mode. ** Image mode *** RET (image-toggle-animation') toggles animation, if the displayed image can be animated. *** Option image-animate-loop', if non-nil, loops the animation. If nil, image-toggle-animation' plays the animation once. ** Info *** New command info-display-manual' displays an Info manual specified by its name. If that manual is already visited in some Info buffer within the current session, the command will display that buffer. Otherwise, it will load the manual and display it. This is handy if you have many manuals in many Info buffers, and don't remember the name of the buffer visiting the manual you want to consult. ** The Landmark game is now invoked with landmark', not lm'. ** MH-E has been upgraded to MH-E version 8.2.93. See MH-E-NEWS for details. ** Modula-2 mode provides auto-indentation. ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags. ** Prolog mode has been completely revamped, with lots of additional functionality such as more intelligent indentation, electricity, support for more variants, including Mercury, and a lot more. ** Rmail *** The command rmail-epa-decrypt' decrypts OpenPGP data in the Rmail incoming message. ** shell-mode can track your cwd by reading it from your prompt. Just set shell-dir-cookie-re to an appropriate regexp. --- ** SQL Mode enhancements. *** sql-dialect' is an alias for sql-product'. *** New variable sql-port' specifies the port number for connecting to a MySQL or Postgres server. *** The command sql-product-interactive' now takes a prefix argument, which causes it to prompt for an SQL product instead of the current value of sql-product'. *** Product-specific SQL interactive commands now take prefix args. These commands (sql-sqlite', sql-postgres', sql-mysql', etc.), given a prefix argument, prompt for a name for the SQL interactive buffer. This reduces the need for calling sql-rename-buffer'. *** SQL interactive modes suppress command continuation prompts, and replace tabs with spaces. The first change impacts multiple line SQL statements entered with C-j between each line, statements yanked into the buffer and statements sent with sql-send-*' functions. The second change prevents the MySQL and Postgres interpreters from listing object name completions when sent text via sql-send-*' functions. *** New custom variables control prompting for login parameters. Each supported product has a custom variable sql-*-login-params', which is a list of the parameters to be prompted for before a connection is established. *** New variable sql-connection-alist' for login parameter values. This can be used to store different username, database and server values. Connections defined in this variable appear in the submenu SQL->Start... for making new SQLi sessions. *** New command sql-connect' starts a predefined SQLi session, using the login parameters from sql-connection-alist'. *** New "Save Connection" menu item in SQLi buffers. This gathers the login params specified for the SQLi session, if it was not started by a connection, and saves them as a new connection. *** Commands for listing database objects and details. In an SQLi session, you can get a list of objects in the database. The contents of these lists are product specific. **** C-c C-l a' or the "SQL->List all objects" menu item lists all the objects in the database. With a prefix argument, it displays additional details or extend the listing to include other schemas objects. **** C-c C-l t' or the "SQL->List Table details" menu item prompts for the name of a database table or view and displays the list of columns in the relation. With a prefix argument, it displays additional details about each column. *** New options sql-send-terminator' and sql-oracle-scan-on'. *** An API for manipulating SQL product definitions has been added. ** TeX modes *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly. ** Tramp *** There exists a new inline access method "ksu" (kerberized su). *** The following access methods are discontinued: "ssh1_old", "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish". *** The option ange-ftp-binary-file-name-regexp' has changed its default value to "". ** url-queue-retrieve' downloads web pages asynchronously, but allow controlling the degree of parallelism. ** VC and related modes *** Support for pulling on distributed version control systems. The vc-pull command runs a "pull" operation, if it is supported. This updates the current branch from upstream. A prefix argument means to prompt the user for specifics, e.g. a pull location. **** vc-update' is now an alias for vc-pull'. **** Currently supported by Bzr, Git, and Mercurial. *** Support for merging on distributed version control systems. The vc-merge command now runs a "merge" operation, if it is supported. This merges another branch into the current one. This command prompts the user for specifics, e.g. a merge source. **** Currently supported for Bzr, Git, and Mercurial. *** New option vc-revert-show-diff' controls whether vc-revert' shows a diff while querying the user. It defaults to t. *** Log entries in some Log View buffers can be toggled to display a longer description by typing RET (log-view-toggle-entry-display). In the Log View buffers made by C-x v L' (vc-print-root-log), you can use this to display the full log entry for the revision at point. **** Currently supported for Bzr, Git, and Mercurial. **** Packages using Log View mode can enable this functionality by binding log-view-expanded-log-entry-function' to a suitable function. *** New command vc-ediff' allows visual comparison of two revisions of a file similar to vc-diff', but using ediff backend. ** FIXME: xdg-open for browse-url and reportbug, 2010/08. ** Obsolete modes *** partial-completion-mode is obsolete. You can get a comparable behavior with: (setq completion-styles '(partial-completion initials)) (setq completion-pcm-complete-word-inserts-delimiters t) *** pc-mode.el is obsolete. *** sregex.el is obsolete, since rx.el is a strict superset. *** s-region.el and pc-select are obsolete. They are superseded by shift-select-mode enabled by default in 23.1. ** Miscellaneous +++ *** f90.el has some support for Fortran 2008 syntax. --- *** copyright-fix-years' can optionally convert consecutive years to ranges. *** New command nato-region' converts text to NATO phonetic alphabet. * New Modes and Packages in Emacs 24.1 ** Occur Edit mode applies edits made in *Occur* buffers to the original buffers. It is bound to "e" in Occur mode. ** New global minor modes electric-pair-mode, electric-indent-mode, and electric-layout-mode. ** tabulated-list.el provides a generic major mode for tabulated data, from which other modes can be derived. ** pcase.el provides the ML-style pattern matching macro pcase'. ** secrets.el is an implementation of the Secret Service API, an interface to password managers like GNOME Keyring or KDE Wallet. The Secret Service API requires D-Bus for communication. The command secrets-show-secrets' offers a buffer with a visualization of the secrets. ** notifications.el provides an implementation of the Desktop Notifications API. It requires D-Bus for communication. ** soap-client.el supports access to SOAP web services from Emacs. soap-inspect.el is an interactive inspector for SOAP WSDL structures. ** xmodmap-generic-mode for xmodmap files. ** New emacs-lock.el package. (The pre-existing one has been renamed to old-emacs-lock.el and moved to obsolete/.) Now, Emacs Lock is a proper minor mode emacs-lock-mode'. Protection against exiting Emacs and killing the buffer can be set separately. The mechanism for auto turning off protection for buffers with inferior processes has been generalized. * Incompatible Lisp Changes in Emacs 24.1 --- ** char-direction-table' and the associated function char-direction' were deleted. They were buggy and inferior to the new support of bidirectional editing introduced in Emacs 24. If you need the bidirectional properties of a character, use get-char-code-property' with the last argument bidi-class'. +++ ** copy-directory' now copies the source directory as a subdirectory of the target directory, if the latter is an existing directory. The new optional arg COPY-CONTENTS, if non-nil, makes the function copy the contents directly into a pre-existing target directory. ** compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and passes it to the mail user agent function. This argument specifies an action for returning to the caller after finishing with the mail. This is currently used by Rmail to delete a mail window. ** For mouse click input events in the text area, the Y pixel coordinate in the POSITION list now counts from the top of the text area, excluding any header line. Previously, it counted from the top of the header line. ** Removed obsolete name e' (use float-e' instead). ** A backquote not followed by a space is now always treated as new-style. ** Test for special mode-class was moved from view-file to view-buffer. FIXME: This only says what was changed, but not what are the programmer-visible consequences. ** Passing a nil argument to a minor mode function now turns the mode ON unconditionally. +++ ** During startup, Emacs no longer adds entries for menu-bar-lines' and tool-bar-lines' to default-frame-alist' and initial-frame-alist'. With these alist entries omitted, make-frame' checks the value of the variable menu-bar-mode'/tool-bar-mode' to determine whether to create a menu-bar or tool-bar, respectively. If the alist entries are added, they override the value of menu-bar-mode'/tool-bar-mode'. ** Regions created by mouse dragging are now normal active regions, similar to the ones created by shift-selection. In previous Emacs versions, these regions were delineated by mouse-drag-overlay', which has now been removed. ** cl.el no longer provides cl-19'. ** The following obsolete functions and aliases were removed: comint-kill-output, decompose-composite-char, outline-visible, internal-find-face, internal-get-face, frame-update-faces, frame-update-face-colors, x-frob-font-weight, x-frob-font-slant, x-make-font-bold, x-make-font-demibold, x-make-font-unbold x-make-font-italic, x-make-font-oblique, x-make-font-unitalic x-make-font-bold-italic, mldrag-drag-mode-line, mldrag-drag-vertical-line, iswitchb-default-keybindings, char-bytes, isearch-return-char, make-local-hook ** The following obsolete variables and varaliases were removed: checkdoc-minor-keymap, vc-header-alist, directory-sep-char, and font-lock-defaults-alist. ** The following obsolete files were removed: sc.el, x-menu.el, rnews.el, rnewspost.el ** FIXME finder-inf.el changes. * Lisp changes in Emacs 24.1 ** Code can now use lexical scoping by default instead of dynamic scoping. The lexical-binding' variable lets code use lexical scoping for local variables. It is typically set via file-local variables, in which case it applies to all the code in that file. *** eval' takes a new optional argument lexical' to choose the new lexical binding instead of the old dynamic binding mode. *** Lexically scoped interpreted functions are represented with a new form of function value which looks like (closure ENV ARGS &rest BODY). *** New macro letrec' to define recursive local functions. *** New function special-variable-p' to check whether a variable is declared as dynamically bound. ** An Emacs Lisp testing tool is now included. Emacs Lisp developers can use this tool to write automated tests for their code. See the ERT info manual for details. ** Changes for bidirectional display and editing +++ *** New function current-bidi-paragraph-direction'. This returns the actual value of base direction of the paragraph at point. +++ *** New function bidi-string-mark-left-to-right'. Given a string containing characters from right-to-left (RTL) scripts, this function returns another string which can be safely inserted into a buffer, such that any following text will be always displayed to the right of that string. (This works by appending the Unicode "LEFT-TO-RIGHT MARK" character when the argument string might need that.) This is useful when the buffer has overall left-to-right (LTR) paragraph direction and you need to insert a string whose contents and directionality are not known in advance, without disrupting the layout of the line. ** Window changes *** switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW, which if non-nil requires the buffer to be displayed in the currently selected window, signaling an error otherwise. If nil, another window can be used, e.g. if the selected one is strongly dedicated. *** FIXME: buffer-display-alist changes ** Completion *** New variable completion-extra-properties used to specify extra properties of the current completion: - :annotate-function, same as the old completion-annotate-function. - :exit-function, function to call after completion took place. *** Functions on completion-at-point-functions can return any of the properties valid for completion-extra-properties. *** completion-annotate-function is obsolete. *** New metadata' method for completion tables. The metadata thus returned can specify various details of the data returned by all-completions': - category' is the kind of objects returned (e.g., buffer', file', ...), used to select a style in completion-category-overrides. - annotation-function' to add annotations in *Completions*. - display-sort-function' to specify how to sort entries in *Completions*. - cycle-sort-function' to specify how to sort entries when cycling. ** glyphless-char-display' can now distinguish between graphical and text terminal display, via a char-table entry that is a cons cell. ** open-network-stream' can now be used to open an encrypted stream. It now accepts an optional :type' parameter for initiating a TLS connection, directly or via STARTTLS. To do STARTTLS, additional parameters (:end-of-command', :success', :capabilities-command') must also be supplied. +++ ** pre/post-command-hook are not reset to nil upon error. Instead, the offending function is removed. ** New low-level function run-hook-wrapped. ** server-eval-at' is provided to allow evaluating forms on different Emacs server instances. ** call-process' allows a (:file "file")' spec to redirect STDOUT to a file. --- ** Variable stack-trace-on-error' removed. Also the debugger can now "continue" from an error, which means it will jump to the error handler as if the debugger had not been invoked instead of jumping all the way to the top-level. ** New function read-char-choice' reads a restricted set of characters, discarding any inputs not inside the set. ** image-library-alist' is renamed to dynamic-library-alist'. The variable is now used to load all kind of supported dynamic libraries, not just image libraries. The previous name is still available as an obsolete alias. ** New variable syntax-propertize-function'. This replaces font-lock-syntactic-keywords' which is now obsolete. This allows syntax-table properties to be set independently from font-lock: just call syntax-propertize to make sure the text is propertized. Together with this new variable come a new hook syntax-propertize-extend-region-functions, as well as two helper functions: syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords as-is; and syntax-propertize-rules which provides a new way to specify syntactic rules. ** New hook post-self-insert-hook run at the end of self-insert-command. +++ ** Syntax tables support a new "comment style c" additionally to style b. ** frame-local variables cannot be let-bound any more. +++ ** prog-mode is a new major-mode meant to be the parent of programming mode. The prog-mode-hook it defines can be used to enable features for programming modes. For example: (add-hook 'prog-mode-hook 'flyspell-prog-mode) enables on the fly spell checking for comments and strings for programming modes. ** define-minor-mode accepts a new keyword :variable. +++ ** delete-file' and delete-directory' now accept optional arg TRASH. Trashing is performed if TRASH and delete-by-moving-to-trash' are both non-nil. Interactively, TRASH defaults to t, unless a prefix argument is supplied (see Trash changes, above). ** facemenu-read-color' is now an alias for read-color'. The command read-color' now requires a match for a color name or RGB triplet, instead of signalling an error if the user provides a invalid input. ** Tool-bars can display separators. Tool-bar separators are handled like menu separators in menu-bar maps, i.e. via menu entries of the form (menu-item "--")'. ** Image API *** Animated images support (currently animated gifs only). **** image-animated-p' returns non-nil if an image can be animated. **** image-animate' animates a supplied image spec. **** image-animate-timer' returns the timer object for an image that is being animated. *** image-extension-data' is renamed to image-metadata'. *** If Emacs is compiled with ImageMagick support (see Startup Changes), the function imagemagick-types' returns a list of image file extensions that your installation of ImageMagick supports. The function imagemagick-register-types' enables ImageMagick support for these image types, minus those listed in imagemagick-types-inhibit'. See the Emacs Lisp Reference Manual for more information. ** XML and HTML parsing *** If Emacs is compiled with libxml2 support (which is the default), two new Emacs Lisp-level functions are defined: libxml-parse-html-region' (which will parse "real world" HTML) and libxml-parse-xml-region' (which parses XML). Both return an Emacs Lisp parse tree. FIXME: These should be front-ended by xml.el. ** GnuTLS *** Emacs can be compiled with libgnutls support This is the default. You will then be able to use the functionality in gnutls.el, namely the open-gnutls-stream' and gnutls-negotiate' functions. It's easiest to use these functions through open-network-stream' because it can upgrade connections through STARTTLS opportunistically or use plain SSL, depending on your needs. Only versions 2.8.x and higher or GnuTLS have been tested. *** gnutls-log-level Set gnutls-log-level' higher than 0 to get debug output. 1 is for important messages, 2 is for debug data, and higher numbers are as per the GnuTLS logging conventions. The output is in *Messages*. ** Isearch *** New hook isearch-update-post-hook' that runs in isearch-update'. +++ ** Progress reporters can now "spin". The MIN-VALUE and MAX-VALUE arguments of make-progress-reporter' can now be nil, or omitted. This makes a "non-numeric" reporter. Each time you call progress-reporter-update' on that progress reporter, with a nil or omitted VALUE argument, the reporter message is displayed with a "spinning bar". ** New variable revert-buffer-in-progress-p' is true while a buffer is being reverted, even if the buffer has a local revert-buffer-function'. ** New variables delayed-warnings-list' and delayed-warnings-hook' allow deferring warnings until the main command loop is executed. +++ ** set-auto-mode' now respects mode: local variables at the end of files, as well as those in the -*- line. --- ** rx.el has a new group-n' construct for explicitly numbered groups. ** keymaps can inherit from multiple parents. +++ ** New reader macro ## which stands for the empty symbol. This means that the empty symbol can now be read back. Also, #: by itself (when not immediately followed by a possible symbol character) stands for an empty uninterned symbol. ** Obsolete functions and variables *** buffer-substring-filters is obsolete. Use filter-buffer-substring-functions' instead. *** byte-compile-disable-print-circle' is obsolete. *** deferred-action-list' and deferred-action-function' are obsolete. * Changes in Emacs 24.1 on non-free operating systems ** New configure.bat option --enable-checking builds Emacs with extra runtime checks. ** New configure.bat option --distfiles to specify files to be included in binary distribution. ** New configure.bat option --without-gnutls to disable automatic GnuTLS detection. ** New configure.bat option --lib for general library linkage, works with the USER_LIBS build variable. ** New make target dist' to create binary distribution for MS Windows. ** On Nextstep/OSX, the menu bar can be hidden by customizing ns-auto-hide-menu-bar. ---------------------------------------------------------------------- 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 . Local variables: mode: outline paragraph-separate: "[ ]*$" end: `