| 1 | GNU Emacs NEWS -- history of user-visible changes. |
| 2 | |
| 3 | Copyright (C) 2010-2012 Free Software Foundation, Inc. |
| 4 | See the end of the file for license conditions. |
| 5 | |
| 6 | Please send Emacs bug reports to bug-gnu-emacs@gnu.org. |
| 7 | If possible, use M-x report-emacs-bug. |
| 8 | |
| 9 | This file is about changes in Emacs version 24. |
| 10 | |
| 11 | See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18, |
| 12 | and NEWS.1-17 for changes in older Emacs versions. |
| 13 | |
| 14 | You can narrow news to a specific version by calling `view-emacs-news' |
| 15 | with a prefix argument or by typing C-u C-h C-n. |
| 16 | |
| 17 | Temporary note: |
| 18 | +++ indicates that the appropriate manual has already been updated. |
| 19 | --- means no change in the manuals is called for. |
| 20 | When you add a new item, please add it without either +++ or --- |
| 21 | so we will look at it and add it to the manual. |
| 22 | |
| 23 | \f |
| 24 | * Installation Changes in Emacs 24.2 |
| 25 | |
| 26 | ** New configure option '--enable-gcc-warnings', intended for developers. |
| 27 | If building with GCC, this enables compile-time checks that warn about |
| 28 | possibly-questionable C code. On a recent GNU system there should be |
| 29 | no warnings; on older and on non-GNU systems the generated warnings |
| 30 | may be useful. |
| 31 | |
| 32 | ** The configure option '--disable-maintainer-mode' has been removed, |
| 33 | as it was confusingly-named and rarely useful. |
| 34 | |
| 35 | --- |
| 36 | ** Emacs uses libtinfo in preference to libncurses, if available. |
| 37 | |
| 38 | --- |
| 39 | ** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and |
| 40 | /usr/pkg/lib to the linker search path. You must add them yourself if |
| 41 | you want them. |
| 42 | |
| 43 | --- |
| 44 | ** On Mac OS X, configure no longer automatically adds the Fink /sw |
| 45 | directories to the search path. You must add them yourself if you want them. |
| 46 | |
| 47 | \f |
| 48 | * Startup Changes in Emacs 24.2 |
| 49 | |
| 50 | ** Emacs no longer searches for `leim-list.el' files beneath the standard |
| 51 | lisp/ directory. There should not be any there anyway. If you have |
| 52 | been adding them there, put them somewhere else, eg site-lisp. |
| 53 | |
| 54 | \f |
| 55 | * Changes in Emacs 24.2 |
| 56 | |
| 57 | ** New functions `system-users', `system-groups' return lists of the user |
| 58 | name, group names known to the system (where possible). |
| 59 | |
| 60 | ** If your Emacs was built from a bzr checkout, the new variable |
| 61 | `emacs-bzr-version' contains information about which bzr revision was used. |
| 62 | |
| 63 | ** ImageMagick support, if available, is automatically enabled. |
| 64 | It is no longer necessary to call `imagemagick-register-types' |
| 65 | explicitly to install ImageMagick image types; that function is called |
| 66 | automatically at startup, or when customizing imagemagick-types-enable |
| 67 | or imagemagick-types-inhibit. |
| 68 | |
| 69 | *** Setting `imagemagick-types-inhibit' to t now disables the use of |
| 70 | ImageMagick to view images. You must call imagemagick-register-types |
| 71 | afterwards if you do not use customize to change this. |
| 72 | |
| 73 | *** The new variable `imagemagick-types-enable' also affects which |
| 74 | ImageMagick types are treated as images. The function |
| 75 | `imagemagick-filter-types' returns the list of types that will be |
| 76 | treated as images. |
| 77 | |
| 78 | ** String values for `initial-buffer-choice' also apply to emacsclient |
| 79 | frames, if emacsclient is only told to open a new frame without |
| 80 | specifying any file to visit or expression to evaluate. |
| 81 | |
| 82 | +++ |
| 83 | ** You can prevent the creation of lock files by setting `create-lockfiles' |
| 84 | to nil. Use with caution, and only if you really need to. |
| 85 | |
| 86 | +++ |
| 87 | ** Using "unibyte: t" in Lisp source files is obsolete. |
| 88 | Use "coding: raw-text" instead. |
| 89 | |
| 90 | \f |
| 91 | * Editing Changes in Emacs 24.2 |
| 92 | |
| 93 | ** Search changes |
| 94 | |
| 95 | *** Global `M-s _' starts a symbol (identifier) incremental search, |
| 96 | and `M-s _' in Isearch toggles symbol search mode. |
| 97 | `M-s c' in Isearch toggles search case-sensitivity. |
| 98 | |
| 99 | ** M-x move-to-column, if called interactively with no prefix arg, now |
| 100 | prompts for a column number. |
| 101 | |
| 102 | ** `mouse-avoidance-banish-position' can now be used to customize |
| 103 | `mouse-avoidance-mode' further. |
| 104 | |
| 105 | ** `C-M-f' and `C-M-b' will now move to the path name separator |
| 106 | character when doing minibuffer filename prompts. |
| 107 | |
| 108 | ** `goto-char' is now bound to `M-g c'. |
| 109 | |
| 110 | \f |
| 111 | * Changes in Specialized Modes and Packages in Emacs 24.2 |
| 112 | |
| 113 | ** VHDL-mode |
| 114 | - Support for ghdl (free vhdl compiler). Now default. |
| 115 | - Add/update support for VHDL-AMS packages. |
| 116 | - Update to VHDL'02 standard. |
| 117 | - Accept \r and \f as whitespace. |
| 118 | |
| 119 | ** Diff mode |
| 120 | |
| 121 | Faces for changes now use the same diff color scheme as in modern VCSes |
| 122 | where deletions are displayed in red (new faces `diff-refine-removed' |
| 123 | and `smerge-refined-removed' and new definition of `diff-removed'), |
| 124 | insertions in green (new faces `diff-refine-added' and |
| 125 | `smerge-refined-added' and new definition of `diff-added'). |
| 126 | The variable `diff-use-changed-face' defines whether to use |
| 127 | the face `diff-changed', or `diff-removed' and `diff-added' |
| 128 | to highlight changes in context diffs. |
| 129 | |
| 130 | ** Ediff now uses the same color scheme as Diff mode |
| 131 | on high color displays. |
| 132 | |
| 133 | ** `sh-script' |
| 134 | *** Pairing of parens/quotes uses electric-pair-mode instead of skeleton-pair. |
| 135 | *** `sh-electric-here-document-mode' now controls auto-insertion of here-docs. |
| 136 | *** `sh-use-smie' lets you choose a new indentation and navigation code. |
| 137 | |
| 138 | ** reStructuredText mode |
| 139 | |
| 140 | *** Rebind nearly all keys making room for more keys and complying |
| 141 | better to usage in other modes. Describe bindings with C-c C-h. |
| 142 | |
| 143 | *** Major revision of indentation working very similar to other |
| 144 | modes. TAB is your friend. |
| 145 | |
| 146 | *** Major revision of filling working fine with most of |
| 147 | reStructuredText syntax. Support auto-filling. |
| 148 | |
| 149 | *** Major revision of comment handling. |
| 150 | |
| 151 | *** Major revision of fontification working with `jit-lock-mode'. |
| 152 | |
| 153 | *** Cover reStructuredText syntax more closely. Improve |
| 154 | the experience for Sphinx users. |
| 155 | |
| 156 | *** `rst-insert-list' inserts new list or continues existing lists. |
| 157 | |
| 158 | *** Extend correct and improve customization. |
| 159 | |
| 160 | *** Negative prefix argument always works for `rst-adjust'. |
| 161 | |
| 162 | *** Reset window configuration after displaying TOC. |
| 163 | |
| 164 | *** Package version in `rst-version'. |
| 165 | |
| 166 | ** New `derived-mode' filter for Ibuffer, bound to `/ M'. |
| 167 | `/ m' is now bound to filter by used-mode, which used to be bound to `/ M'. |
| 168 | |
| 169 | ** Apropos |
| 170 | |
| 171 | *** The faces used by Apropos are now directly customizable. |
| 172 | These faces are named `apropos-symbol', `apropos-keybinding', and so on; |
| 173 | see the `apropos' Custom group for details. |
| 174 | |
| 175 | **** The old options whose values specified faces to use were removed |
| 176 | (i.e. `apropos-symbol-face', `apropos-keybinding-face', etc.). |
| 177 | |
| 178 | ** Calendar |
| 179 | |
| 180 | *** The calendars produced by cal-html include holidays. |
| 181 | Customize cal-html-holidays to change this. |
| 182 | |
| 183 | ** Customize |
| 184 | |
| 185 | *** `custom-reset-button-menu' now defaults to t. |
| 186 | |
| 187 | *** Non-option variables are never matched in `customize-apropos' and |
| 188 | `customize-apropos-options' (i.e. the prefix argument does nothing for |
| 189 | these commands now). |
| 190 | |
| 191 | ** erc will look up server/channel names via auth-source and use the |
| 192 | channel keys found, if any. |
| 193 | |
| 194 | ** FFAP |
| 195 | |
| 196 | *** The option `ffap-url-unwrap-remote' can now be a list of strings, |
| 197 | specifying URL types which should be converted to remote file names at |
| 198 | the FFAP prompt. The default is now '("ftp"). |
| 199 | |
| 200 | ** Follow mode |
| 201 | |
| 202 | *** The obsolete variable `follow-mode-off-hook' has been removed. |
| 203 | |
| 204 | *** Follow mode no longer works by using advice. |
| 205 | The option `follow-intercept-processes' has been removed. |
| 206 | |
| 207 | ** The `server-auth-key' variable can be used to set a permanent |
| 208 | shared key for Emacs Server. |
| 209 | |
| 210 | ** In Perl mode, new option `perl-indent-parens-as-block' causes non-block |
| 211 | closing brackets to be aligned with the line of the opening bracket. |
| 212 | |
| 213 | ** FIXME something happened to ses.el, 2012-04-17. |
| 214 | |
| 215 | ** which-function-mode now applies to all applicable major modes by default. |
| 216 | |
| 217 | ** D-Bus |
| 218 | |
| 219 | +++ |
| 220 | *** New variables `dbus-compiled-version' and `dbus-runtime-version'. |
| 221 | |
| 222 | +++ |
| 223 | *** The D-Bus object manager interface is implemented. |
| 224 | |
| 225 | +++ |
| 226 | *** Variables of type :(u)int32 and :(u)int64 accept floating points, |
| 227 | if their value does not fit into Emacs's integer range. |
| 228 | |
| 229 | +++ |
| 230 | *** The function `dbus-call-method' works non-blocking now, it can be |
| 231 | interrupted by C-g. `dbus-call-method-non-blocking' is obsolete. |
| 232 | |
| 233 | +++ |
| 234 | *** Signals can be sent also as unicast message. |
| 235 | |
| 236 | +++ |
| 237 | *** The argument list of `dbus-register-signal' has been extended, |
| 238 | according to the new match rule types of D-Bus. See the manual for |
| 239 | details. |
| 240 | |
| 241 | +++ |
| 242 | *** `dbus-init-bus' supports private connections. |
| 243 | |
| 244 | +++ |
| 245 | *** There is a new function `dbus-setenv'. |
| 246 | |
| 247 | +++ |
| 248 | ** notifications.el supports now version 1.2 of the Notifications API. |
| 249 | The function `notifications-get-capabilities' returns the supported |
| 250 | server properties. |
| 251 | |
| 252 | ** Tabulated List and packages derived from it |
| 253 | |
| 254 | *** New command `tabulated-list-sort', bound to `S', sorts the column |
| 255 | at point, or the Nth column if a numeric prefix argument is given. |
| 256 | |
| 257 | ** URL |
| 258 | |
| 259 | *** Structs made by `url-generic-parse-url' have nil `attributes' slot. |
| 260 | Previously, this slot stored semicolon-separated attribute-value pairs |
| 261 | appended to some imap URLs, but this is not compatible with RFC 3986. |
| 262 | So now the `filename' slot stores the entire path and query components |
| 263 | and the `attributes' slot is always nil. |
| 264 | |
| 265 | *** New function `url-encode-url' for encoding a URI string. |
| 266 | The `url-retrieve' function now uses this to encode its URL argument, |
| 267 | in case that is not properly encoded. |
| 268 | |
| 269 | ** Obsolete packages: |
| 270 | |
| 271 | *** assoc.el |
| 272 | In most cases, assoc+member+push+delq work just as well. |
| 273 | And in any case it's just a terrible package: ugly semantics, terrible |
| 274 | inefficiency, and not namespace-clean. |
| 275 | |
| 276 | *** bruce.el |
| 277 | |
| 278 | *** mailpost.el |
| 279 | |
| 280 | *** mouse-sel.el |
| 281 | |
| 282 | *** patcomp.el |
| 283 | |
| 284 | \f |
| 285 | * New Modes and Packages in Emacs 24.2 |
| 286 | \f |
| 287 | * Incompatible Lisp Changes in Emacs 24.2 |
| 288 | |
| 289 | +++ |
| 290 | ** Docstrings starting with `*' no longer indicate user options. |
| 291 | Only variables defined using `defcustom' are considered user options. |
| 292 | The function `user-variable-p' is now an obsolete alias for |
| 293 | `custom-variable-p'. |
| 294 | |
| 295 | ** `face-spec-set' no longer sets frame-specific attributes when the |
| 296 | third argument is a frame (that usage was obsolete since Emacs 22.2). |
| 297 | |
| 298 | +++ |
| 299 | ** The arguments of `dbus-register-signal' are no longer just strings, |
| 300 | but keywords or keyword-string pairs. The old argument list will |
| 301 | still be supported for Emacs 24.x. |
| 302 | |
| 303 | ** The following obsolete variables and varaliases have been removed: |
| 304 | |
| 305 | *** `facemenu-unlisted-faces' |
| 306 | *** `rmail-decode-mime-charset' |
| 307 | |
| 308 | \f |
| 309 | * Lisp changes in Emacs 24.2 |
| 310 | |
| 311 | ** `defun' also accepts a (declare DECLS) form, like `defmacro'. |
| 312 | The interpretation of the DECLS is determined by `defun-declarations-alist'. |
| 313 | |
| 314 | ** `macro-declaration-function' is obsolete, use `macro-declarations-alist'. |
| 315 | |
| 316 | ** New function `set-temporary-overlay-map'. |
| 317 | |
| 318 | ** New macros `setq-local' and `defvar-local'. |
| 319 | |
| 320 | ** New error type and new function `user-error'. Doesn't trigger the debugger. |
| 321 | |
| 322 | ** Completion |
| 323 | |
| 324 | *** New function `completion-table-with-quoting' to handle completion |
| 325 | in the presence of quoting, such as file completion in shell buffers. |
| 326 | |
| 327 | *** New function `completion-table-subvert' to use an existing completion |
| 328 | table, but with a different prefix. |
| 329 | |
| 330 | ** Time |
| 331 | |
| 332 | *** `current-time-string' no longer requires that its argument's year |
| 333 | must be in the range 1000..9999. It now works with any year supported |
| 334 | by the underlying C implementation. |
| 335 | |
| 336 | ** `automount-dir-prefix' is obsolete. |
| 337 | ** `buffer-has-markers-at' is obsolete. |
| 338 | \f |
| 339 | * Changes in Emacs 24.2 on non-free operating systems |
| 340 | |
| 341 | ** New configure.bat options on MS-Windows: |
| 342 | |
| 343 | *** --without-libxml2 omits support for libxml2, even if its presence |
| 344 | is detected. |
| 345 | |
| 346 | ** When invoked with the -nw switch to run on the Windows text-mode terminal, |
| 347 | Emacs now supports mouse highlight, help-echo (in the echo area), and |
| 348 | mouse-autoselect-window. |
| 349 | |
| 350 | \f |
| 351 | * Installation Changes in Emacs 24.1 |
| 352 | |
| 353 | ** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3 |
| 354 | to configure. Note that other libraries used by Emacs, RSVG and GConf, |
| 355 | also depend on Gtk+. You can disable them with --without-rsvg and |
| 356 | --without-gconf. |
| 357 | |
| 358 | ** Emacs can be compiled with GnuTLS support. |
| 359 | This happens by default if a suitably recent version of the library is |
| 360 | found at build time. To prevent this, use the configure option |
| 361 | `--without-gnutls'. See below for GnuTLS features. |
| 362 | |
| 363 | ** Emacs can be compiled with SELinux support. |
| 364 | This happens by default if a suitably recent version of the library is |
| 365 | found at build time. To prevent this, use the configure option |
| 366 | `--without-selinux'. See below for SELinux features. |
| 367 | |
| 368 | ** Emacs can be compiled with ImageMagick support. |
| 369 | This happens by default if a suitably recent version of the library is |
| 370 | found at build time. To prevent this, use the configure option |
| 371 | `--without-imagemagick'. See below for ImageMagick features. |
| 372 | This feature is not available for the Nextstep or MS ports. |
| 373 | |
| 374 | ** Emacs can be compiled with libxml2 support. |
| 375 | This happens by default if a suitably recent version of the library is |
| 376 | found at build time. To prevent this, use the configure option |
| 377 | `--without-xml2'. See below for libxml2 features. |
| 378 | |
| 379 | ** By default, the installed Info and man pages are compressed. |
| 380 | You can disable this by configuring --without-compress-info. |
| 381 | |
| 382 | ** New configure option --with-wide-int. |
| 383 | With it, Emacs integers typically have 62 bits, even on 32-bit machines. |
| 384 | On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB |
| 385 | to about 2 GiB. |
| 386 | |
| 387 | ** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost. |
| 388 | These provide no new functionality, they just remove the need to edit |
| 389 | lib-src/Makefile by hand in order to use the associated features. |
| 390 | |
| 391 | ** New configure option --enable-use-lisp-union-type. |
| 392 | This is only useful for Emacs developers to debug certain types of bugs. |
| 393 | This is not a new feature; only the configure flag is new. |
| 394 | |
| 395 | ** The standalone programs digest-doc and sorted-doc are removed. |
| 396 | Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'. |
| 397 | |
| 398 | ** The standalone program `fakemail' is removed. |
| 399 | If you need it, feedmail.el provides a superset of the functionality. |
| 400 | |
| 401 | \f |
| 402 | * Startup Changes in Emacs 24.1 |
| 403 | |
| 404 | ** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte |
| 405 | command line arguments, and the EMACS_UNIBYTE environment variable, no |
| 406 | longer have any effect. (They were declared obsolete in Emacs 23.) |
| 407 | |
| 408 | ** New command line option `--no-site-lisp' removes site-lisp directories |
| 409 | from load-path. -Q now implies this. This option does not affect the |
| 410 | EMACSLOADPATH environment variable (and hence has no effect for |
| 411 | Nextstep builds). |
| 412 | |
| 413 | \f |
| 414 | * Changes in Emacs 24.1 |
| 415 | |
| 416 | ** Completion |
| 417 | |
| 418 | *** Many packages now use the `completion-at-point' command, |
| 419 | rather than implementing separate completion commands. |
| 420 | |
| 421 | *** `completion-at-point' now handles tags and semantic completion. |
| 422 | |
| 423 | *** Completion in a non-minibuffer now tries to detect the end of completion |
| 424 | and pops down the *Completions* buffer accordingly. |
| 425 | |
| 426 | *** New option `completion-cycle-threshold' allows completion cycling. |
| 427 | |
| 428 | *** New option `completion-category-overrides' for overriding the |
| 429 | default completion style in certain circumstances. |
| 430 | |
| 431 | *** New completion style `substring'. |
| 432 | |
| 433 | *** Completion of buffer names uses `substring' completion by default. |
| 434 | |
| 435 | *** The option `widget-complete-field' has been removed. |
| 436 | |
| 437 | ** Mail changes |
| 438 | |
| 439 | *** The first time you try sending mail, Emacs asks for a mail method. |
| 440 | This is implemented by a new default for `send-mail-function', which |
| 441 | is `sendmail-query-once'. This offers to use the smtpmail package, or |
| 442 | to use the old defaults relying on external mail facilities |
| 443 | (`sendmail-send-it' on GNU/Linux and other Unix-like systems, and |
| 444 | `mailclient-send-it' on Windows). |
| 445 | |
| 446 | *** Typing C-c m in the buffer made by M-x report-emacs-bug transfers |
| 447 | the report to your desktop's preferred mail client, if there is one. |
| 448 | This uses either the "xdg-email" utility, or Mac OS's "open" command. |
| 449 | |
| 450 | *** See Changes in Specialized Modes and Packages for SMTPmail changes |
| 451 | and Mail mode changes |
| 452 | |
| 453 | ** Emacs server and client changes |
| 454 | |
| 455 | *** New option `server-port' specifies the port for TCP Emacs servers. |
| 456 | |
| 457 | *** New emacsclient argument -q/--quiet suppresses some status messages. |
| 458 | |
| 459 | *** New emacsclient argument --frame-parameters specifies the frame |
| 460 | parameters of any newly-created graphical frame. |
| 461 | |
| 462 | *** If emacsclient shuts down due to Emacs signaling an error, |
| 463 | its exit status is 1. |
| 464 | |
| 465 | *** New emacsclient argument --parent-id ID. |
| 466 | This opens a client frame in parent X window ID, via XEmbed, similar |
| 467 | to the --parent-id argument to Emacs. |
| 468 | |
| 469 | ** Internationalization changes |
| 470 | |
| 471 | *** Emacs now supports display and editing of bidirectional text. |
| 472 | Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are |
| 473 | displayed in the correct visual order as expected by users of those |
| 474 | scripts. The display reordering is a "full bidirectionality" class |
| 475 | implementation of the Unicode Bidirectional Algorithm (UBA). Buffers |
| 476 | with no RTL text should look exactly the same as before. |
| 477 | |
| 478 | **** New buffer-local variable `bidi-display-reordering'. |
| 479 | To disable display reordering in a buffer, change this to nil. |
| 480 | |
| 481 | **** New buffer-local variable `bidi-paragraph-direction'. |
| 482 | If nil (the default), Emacs determines the base direction of each |
| 483 | paragraph from its text, as specified by the UBA. Setting the value |
| 484 | to `right-to-left' or `left-to-right' forces a base direction on each |
| 485 | paragraph. |
| 486 | |
| 487 | Paragraphs with right-to-left base direction are displayed starting at |
| 488 | the right window edge. |
| 489 | |
| 490 | *** Enhanced support for characters with no glyphs in available fonts, |
| 491 | or, on text terminals, characters that cannot be encoded by the |
| 492 | terminal coding system. The new option `glyphless-char-display-control' |
| 493 | specifies how to display them: as a hexadecimal code in a box, a thin |
| 494 | 1-pixel space, an empty box, etc. |
| 495 | |
| 496 | *** New input methods: farsi, farsi-translit, bulgarian-alt-phonetic. |
| 497 | |
| 498 | *** `nobreak-char-display' now also highlights Unicode hyphen chars |
| 499 | (U+2010 and U+2011). |
| 500 | |
| 501 | *** New Hebrew translation of the Emacs Tutorial. |
| 502 | Type `C-u C-h t' to choose it in case your language setup doesn't |
| 503 | automatically select it. |
| 504 | |
| 505 | ** An Emacs Lisp package manager is now included. |
| 506 | This is a convenient way to download and install additional packages, |
| 507 | from a package repository at http://elpa.gnu.org. |
| 508 | |
| 509 | *** M-x list-packages shows a list of packages, which can be |
| 510 | selected for installation. |
| 511 | |
| 512 | *** New command `describe-package', bound to `C-h P'. |
| 513 | |
| 514 | *** By default, all installed packages are loaded automatically when |
| 515 | Emacs starts up. To disable this, set `package-enable-at-startup' to |
| 516 | nil. To specify the packages to load, customize `package-load-list'. |
| 517 | |
| 518 | ** Custom theme changes |
| 519 | |
| 520 | *** New command `M-x customize-themes', which provides a convenient |
| 521 | interface for enabling and disabling Custom themes. |
| 522 | |
| 523 | *** New option `custom-theme-load-path' is the load path for themes. |
| 524 | Emacs no longer looks for Custom themes in `load-path'. The default |
| 525 | value of `custom-theme-load-path' says to look for themes in |
| 526 | `custom-theme-directory', followed by a subdirectory of |
| 527 | `data-directory' named "themes/", which contains a small selection of |
| 528 | built-in Custom themes. |
| 529 | |
| 530 | *** New option `custom-safe-themes' records known-safe theme files. |
| 531 | If a theme is not in this list, Emacs queries before loading it, and |
| 532 | offers to save the theme to `custom-safe-themes' automatically. By |
| 533 | default, all themes included in Emacs are treated as safe. |
| 534 | |
| 535 | ** Improved GTK integration |
| 536 | |
| 537 | *** GTK scroll-bars are now placed on the right by default. |
| 538 | The function `set-scroll-bar-mode' can change this. |
| 539 | |
| 540 | *** GTK tool bars can have just text, just images or images and text. |
| 541 | Customize `tool-bar-style' to choose the style. On a Gnome desktop, |
| 542 | the default is taken from desktop settings. |
| 543 | |
| 544 | *** GTK tool bars can be placed on any edge of the frame. |
| 545 | The frame-parameter tool-bar-position controls this. It takes the |
| 546 | values top, left, right or bottom. The Options => Show/Hide menu has |
| 547 | entries for this. |
| 548 | |
| 549 | *** The default colors for selected text (the `region' face) are taken |
| 550 | from the GTK theme when Emacs is built with GTK. |
| 551 | |
| 552 | *** Emacs uses GTK tooltips by default if built with GTK. |
| 553 | You can disable this by changing `x-gtk-use-system-tooltips' to nil. |
| 554 | |
| 555 | ** Graphical interface changes |
| 556 | |
| 557 | *** On graphical displays, the mode-line no longer ends in dashes. |
| 558 | Also, the first dash (which does not indicate anything) is just |
| 559 | displayed as a space. |
| 560 | |
| 561 | *** `menu-bar-select-buffer-function' lets you choose another operation |
| 562 | instead of `switch-to-buffer' when selecting an item in the Buffers menu. |
| 563 | |
| 564 | *** Lucid menus and dialogs can display antialiased fonts if Emacs is |
| 565 | built with Xft. These fonts can be set via X resources, for example: |
| 566 | Emacs.pane.menubar.font: Courier-12 |
| 567 | |
| 568 | ** Exiting changes |
| 569 | |
| 570 | *** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP, |
| 571 | or if it receives a SIGINT signal in batch mode. |
| 572 | |
| 573 | *** `kill-emacs-hook' is now also run in batch mode. |
| 574 | Third-party code which adds to `kill-emacs-hook' should check if they |
| 575 | do the right thing in batch mode. |
| 576 | |
| 577 | ** Scrolling changes |
| 578 | |
| 579 | *** New scrolling commands `scroll-up-command' and `scroll-down-command' |
| 580 | (bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom |
| 581 | of buffer at first key-press (instead they move to top/bottom of buffer) |
| 582 | when `scroll-error-top-bottom' is non-nil. |
| 583 | |
| 584 | *** New option `scroll-error-top-bottom' (see above). |
| 585 | |
| 586 | *** New scrolling commands `scroll-up-line' and `scroll-down-line' |
| 587 | scroll a line instead of full screen. |
| 588 | |
| 589 | *** New property `scroll-command' should be set on a command's symbol to |
| 590 | define it as a scroll command affected by `scroll-preserve-screen-position'. |
| 591 | |
| 592 | *** If you customize `scroll-conservatively' to a value greater than 100, |
| 593 | Emacs will never recenter point in the window when it scrolls due to |
| 594 | cursor motion commands or commands that move point (e.f., `M-g M-g'). |
| 595 | Previously, you needed to use `most-positive-fixnum' as the value of |
| 596 | `scroll-conservatively' to achieve the same effect. |
| 597 | |
| 598 | *** "Aggressive" scrolling now honors the scroll margins. |
| 599 | If you customize `scroll-up-aggressively' or |
| 600 | `scroll-down-aggressively' and move point off the window, Emacs now |
| 601 | scrolls the window so as to avoid positioning point inside the scroll |
| 602 | margin. |
| 603 | |
| 604 | ** Basic SELinux support has been added. |
| 605 | This requires Emacs to be linked with libselinux at build time. |
| 606 | |
| 607 | *** Emacs preserves the SELinux file context when backing up. |
| 608 | Also, the function `copy-file' has an extra optional argument for |
| 609 | preserving SELinux context, and the return value of `backup-buffer' |
| 610 | now includes the SELinux context. |
| 611 | |
| 612 | *** New functions `file-selinux-context' and `set-file-selinux-context' |
| 613 | get and set the SELinux context of a file. |
| 614 | |
| 615 | ** Trash changes |
| 616 | |
| 617 | *** `delete-by-moving-to-trash' now only affects commands that specify |
| 618 | trashing. This avoids inadvertently trashing temporary files. |
| 619 | |
| 620 | *** Calling `delete-file' or `delete-directory' with a prefix argument |
| 621 | now forces true deletion, regardless of `delete-by-moving-to-trash'. |
| 622 | |
| 623 | ** File- and directory-local variable changes |
| 624 | |
| 625 | *** You can stop directory local vars from applying to subdirectories. |
| 626 | Add an element (subdirs . nil) to the alist portion of any variables |
| 627 | settings to indicate that the section should not apply to |
| 628 | subdirectories. |
| 629 | |
| 630 | *** Directory local variables can apply to some file-less buffers. |
| 631 | Affected modes include dired, vc-dir, and log-edit. For example, |
| 632 | adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will |
| 633 | turn on `whitespace-mode' for *vc-diff* buffers. Modes should call |
| 634 | `hack-dir-local-variables-non-file-buffer' to support this. |
| 635 | |
| 636 | *** Using "mode: MINOR-MODE" to enable a minor mode is deprecated. |
| 637 | Instead, use "eval: (minor-mode 1)". |
| 638 | |
| 639 | *** The variable `inhibit-first-line-modes-regexps' has been renamed |
| 640 | to `inhibit-local-variables-regexps'. As the name suggests, it now |
| 641 | applies to ALL file local variables, not just -*- lines. The |
| 642 | associated `inhibit-first-line-modes-suffixes' has been renamed in the |
| 643 | corresponding way. |
| 644 | |
| 645 | ** Window changes |
| 646 | |
| 647 | *** The `quit-window' command now restores the last buffer displayed |
| 648 | in the quitted window. |
| 649 | |
| 650 | *** Resizing an Emacs frame now preserves proportional window sizes, |
| 651 | modulo restrictions like window minimum sizes and fixed-size windows. |
| 652 | |
| 653 | *** The behavior of `display-buffer' is now customizable in detail. |
| 654 | |
| 655 | **** New option `display-buffer-base-action' specifies a list of |
| 656 | user-determined display "actions" (functions and optional arguments |
| 657 | for choosing the displaying window). |
| 658 | |
| 659 | This takes precedence over the default display action, which is |
| 660 | specified by `display-buffer-fallback-action'. |
| 661 | |
| 662 | **** New option `display-buffer-alist' maps buffer name regexps to |
| 663 | display actions, taking precedence over `display-buffer-base-action'. |
| 664 | |
| 665 | *** New option `window-combination-limit'. |
| 666 | The new option `window-combination-limit' allows to return the space |
| 667 | obtained for resizing or creating a window more reliably to the window |
| 668 | from which such space was obtained. |
| 669 | |
| 670 | *** New option `window-combination-resize'. |
| 671 | The new option `window-combination-resize' allows to split a window that |
| 672 | otherwise cannot be split because it's too small by stealing space from |
| 673 | other windows in the same combination. Subsequent resizing or deletion |
| 674 | of the window will resize all windows in the same combination as well. |
| 675 | |
| 676 | *** New option `frame-auto-hide-function' lets you choose between |
| 677 | iconifying or deleting a frame when burying a buffer in a dedicated |
| 678 | frame, or quitting a window showing a buffer in a frame of its own. |
| 679 | |
| 680 | *** New commands `maximize-window' and `minimize-window'. |
| 681 | These maximize and minimize the size of a window within its frame. |
| 682 | |
| 683 | *** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'. |
| 684 | These functions allow to navigate through the live buffers that have |
| 685 | been shown in a specific window. |
| 686 | |
| 687 | ** Minibuffer changes |
| 688 | |
| 689 | *** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'. |
| 690 | This is handy for minibuffer-only frames, and is also used for the feature |
| 691 | where mouse-1 pops up *Messages*"', which can now easily be changed. |
| 692 | |
| 693 | *** Minibuffers set `truncate-lines' to nil. |
| 694 | If you want to change the value to something else, you could use |
| 695 | for example `minibuffer-setup-hook'. |
| 696 | |
| 697 | ** `auto-mode-case-fold' is now enabled by default. |
| 698 | |
| 699 | ** `backup-by-copying-when-mismatch' now defaults to t. |
| 700 | |
| 701 | ** New basic faces `error', `warning', `success'. |
| 702 | These are used to highlight text indicating failure, caution or |
| 703 | successful operation. |
| 704 | |
| 705 | ** New option `list-colors-sort' defines the color sort order |
| 706 | for `list-colors-display'. |
| 707 | |
| 708 | ** The variable `focus-follows-mouse' now always defaults to nil. |
| 709 | |
| 710 | \f |
| 711 | * Editing Changes in Emacs 24.1 |
| 712 | |
| 713 | ** Search changes |
| 714 | |
| 715 | *** C-y in Isearch is now bound to `isearch-yank-kill', instead of |
| 716 | `isearch-yank-line'. |
| 717 | |
| 718 | *** M-y in Isearch is now bound to `isearch-yank-pop', instead of |
| 719 | `isearch-yank-kill'. |
| 720 | |
| 721 | *** M-s C-e in Isearch is now bound to `isearch-yank-line'. |
| 722 | |
| 723 | ** New commands `count-words-region' and `count-words'. |
| 724 | |
| 725 | *** M-= is bound to `count-words-region', not `count-lines-region'. |
| 726 | The `count-words-region' command, when called interactively, reports |
| 727 | the number of lines, words, and characters in the region. It is a |
| 728 | superset of the old `count-lines-region', which is now an obsolete |
| 729 | alias for it. |
| 730 | |
| 731 | ** The command `just-one-space' (M-SPC), if given a negative argument, |
| 732 | also deletes newlines around point. |
| 733 | |
| 734 | ** Deletion changes |
| 735 | |
| 736 | *** New option `delete-active-region'. |
| 737 | If non-nil, [delete] and DEL delete the region if it is active and no |
| 738 | prefix argument is given. If set to `kill', those commands kill |
| 739 | instead. |
| 740 | |
| 741 | *** New command `delete-forward-char', bound to [delete]. |
| 742 | This is meant for interactive use, and obeys `delete-active-region'. |
| 743 | The command `delete-char' does not obey `delete-active-region'. |
| 744 | |
| 745 | *** `delete-backward-char' is now a Lisp function. |
| 746 | Apart from obeying `delete-active-region', its behavior is unchanged. |
| 747 | However, the byte compiler now warns if it is called from Lisp; Lisp |
| 748 | callers should use delete-char with a negative argument instead. |
| 749 | |
| 750 | *** The option `mouse-region-delete-keys' has been deleted. |
| 751 | |
| 752 | ** Selection changes. |
| 753 | |
| 754 | The default handling of clipboard and primary selections has been |
| 755 | changed to conform with modern X applications. In short, most |
| 756 | commands for killing and yanking text now use the clipboard, while |
| 757 | mouse commands use the primary selection. |
| 758 | |
| 759 | In the following, we provide a list of these changes, followed by a |
| 760 | list of steps to get the old behavior back if you prefer that. |
| 761 | |
| 762 | *** `select-active-regions' now defaults to t. |
| 763 | Merely selecting text (e.g. with drag-mouse-1) no longer puts it in |
| 764 | the kill ring. The selected text is put in the primary selection, if |
| 765 | the system possesses a separate primary selection facility (e.g. X). |
| 766 | |
| 767 | **** `select-active-regions' also accepts a new value, `only'. |
| 768 | This means to only set the primary selection for temporarily active |
| 769 | regions (usually made by mouse-dragging or shift-selection); |
| 770 | "ordinary" active regions, such as those made with C-SPC followed by |
| 771 | point motion, do not alter the primary selection. |
| 772 | |
| 773 | **** `mouse-drag-copy-region' now defaults to nil. |
| 774 | |
| 775 | *** mouse-2 is now bound to `mouse-yank-primary'. |
| 776 | This pastes from the primary selection, ignoring the kill-ring. |
| 777 | Previously, mouse-2 was bound to `mouse-yank-at-click'. |
| 778 | |
| 779 | *** `x-select-enable-clipboard' now defaults to t on all platforms. |
| 780 | |
| 781 | *** `x-select-enable-primary' now defaults to nil. |
| 782 | Thus, commands that kill text or copy it to the kill-ring (such as |
| 783 | M-w, C-w, and C-k) also use the clipboard---not the primary selection. |
| 784 | |
| 785 | **** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now |
| 786 | exactly equivalent to M-w, C-w, and C-y respectively. |
| 787 | |
| 788 | **** Note that on MS-Windows, `x-select-enable-clipboard' was already |
| 789 | non-nil by default, as Windows does not support the primary selection |
| 790 | between applications. |
| 791 | |
| 792 | *** To return to the previous behavior, do the following: |
| 793 | |
| 794 | **** Change `select-active-regions' to nil. |
| 795 | **** Change `mouse-drag-copy-region' to t. |
| 796 | **** Change `x-select-enable-primary' to t (on X only). |
| 797 | **** Change `x-select-enable-clipboard' to nil. |
| 798 | **** Bind `mouse-yank-at-click' to mouse-2. |
| 799 | |
| 800 | *** Support for X cut buffers has been removed. |
| 801 | |
| 802 | *** X clipboard managers are now supported. |
| 803 | To inhibit this, change `x-select-enable-clipboard-manager' to nil. |
| 804 | |
| 805 | ** New command `C-x r N' (`rectangle-number-lines') numbers the lines |
| 806 | in the current rectangle. With a prefix argument, this prompts for a |
| 807 | number to count from and for a format string. |
| 808 | |
| 809 | ** `redisplay-dont-pause' now defaults to t. |
| 810 | This makes Emacs feel more responsive to editing commands that arrive |
| 811 | at high rate, e.g. if you lean on some key, because stopping redisplay |
| 812 | in the middle (when this variable is nil) forces more expensive |
| 813 | updates later on, and Emacs appears to be unable to keep up. |
| 814 | |
| 815 | ** The behavior of <TAB> for active regions in Text mode has changed. |
| 816 | In Text and related modes, typing <TAB> (`indent-for-tab-command') |
| 817 | when the region is active causes Emacs to indent all the lines in the |
| 818 | region, aligning them with the line previous to the first line in the |
| 819 | region (or with the left margin if there is no previous line). |
| 820 | |
| 821 | ** When `occur' is called with a prefix argument, matching strings are |
| 822 | collected into the `*Occur*' buffer without line numbers. If there |
| 823 | are parenthesized subexpressions in the specified regexp, `occur' |
| 824 | reads replacement text that may contain \\& and \\N whose convention |
| 825 | follows `replace-match'. |
| 826 | |
| 827 | \f |
| 828 | * Changes in Specialized Modes and Packages in Emacs 24.1 |
| 829 | |
| 830 | ** Archive Mode has basic support for browsing and updating 7z archives. |
| 831 | |
| 832 | ** BibTeX mode |
| 833 | |
| 834 | *** BibTeX mode now supports biblatex. |
| 835 | Use the variable `bibtex-dialect' to select different BibTeX dialects. |
| 836 | `bibtex-entry-field-alist' is now an obsolete alias for |
| 837 | `bibtex-BibTeX-entry-alist'. |
| 838 | |
| 839 | *** New command `bibtex-search-entries', bound to C-c C-a. |
| 840 | |
| 841 | *** New `bibtex-entry-format' option `sort-fields', disabled by default. |
| 842 | |
| 843 | *** New variable `bibtex-search-entry-globally'. |
| 844 | |
| 845 | ** Browse-url |
| 846 | |
| 847 | *** New option `browse-url-mailto-function' specifies how to handle "mailto:"s. |
| 848 | |
| 849 | *** The default browser used by the package is now the "xdg-open" program, |
| 850 | on platforms that support it. This calls your desktop's preferred browser. |
| 851 | |
| 852 | ** Calendar, Diary, and Appt |
| 853 | |
| 854 | *** Diary entries can contain non-printing "comments". |
| 855 | See the variable `diary-comment-start'. |
| 856 | |
| 857 | *** Appointments can specify their individual warning times. |
| 858 | See the variable `appt-warning-time-regexp'. |
| 859 | |
| 860 | *** The function specified by `appt-disp-window-function' may be passed |
| 861 | lists of arguments if multiple appointments are due at similar times. |
| 862 | If you are using a custom function for this, you should update it. |
| 863 | |
| 864 | *** New function `diary-hebrew-birthday'. |
| 865 | |
| 866 | *** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array' |
| 867 | may no longer be nil, but must all be strings. |
| 868 | |
| 869 | *** The obsolete (since Emacs 22.1) method of enabling the appt |
| 870 | package by adding `appt-make-list' to `diary-hook' has been removed. |
| 871 | Use `appt-activate' instead. |
| 872 | |
| 873 | *** Some appt variables (obsolete since Emacs 22.1) have been removed: |
| 874 | appt-issue-message (use the function appt-activate) |
| 875 | appt-visible/appt-msg-window (use the variable appt-display-format) |
| 876 | |
| 877 | *** Some diary function aliases (obsolete since Emacs 22.1) have been removed: |
| 878 | view-diary-entries, list-diary-entries, show-all-diary-entries |
| 879 | |
| 880 | ** CC Mode |
| 881 | |
| 882 | *** New feature to "guess" the style in an existing buffer. |
| 883 | The main entry point is M-x c-guess. |
| 884 | |
| 885 | *** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang). |
| 886 | |
| 887 | *** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes. |
| 888 | Thus C-M-a will, by default, go to the beginning of the immediate function, |
| 889 | not the top level. |
| 890 | |
| 891 | *** "Macros with semicolons" can be registered for correct indentation. |
| 892 | Where such a macro ends a line (no semicolon) the next statement is no longer |
| 893 | parsed as a statement continuation. |
| 894 | |
| 895 | ** Comint and modes derived from it use the standard completion code. |
| 896 | |
| 897 | ** Compilation mode |
| 898 | |
| 899 | *** Compilation mode can be used without Font Lock mode. |
| 900 | `compilation-parse-errors-function' is now obsolete. |
| 901 | |
| 902 | *** New variable `compilation-filter-start', which is bound while |
| 903 | `compilation-filter-hook' runs. It records the start position of the |
| 904 | text inserted by `compilation-filter'. |
| 905 | |
| 906 | *** `compilation-error-screen-columns' and `compilation-first-column' |
| 907 | are obeyed in the editing buffer. So programming language modes can |
| 908 | set them, whereas previously only the value in the *Compilation* |
| 909 | buffer was used. |
| 910 | |
| 911 | ** Customize |
| 912 | |
| 913 | *** Customize buffers now contain a search field. |
| 914 | The search is performed using `customize-apropos'. |
| 915 | To turn off the search field, set `custom-search-field' to nil. |
| 916 | |
| 917 | *** Custom options now start out hidden if at their default values. |
| 918 | Use the arrow to the left of the option name to toggle visibility. |
| 919 | |
| 920 | *** custom-buffer-sort-alphabetically now defaults to t. |
| 921 | |
| 922 | *** The color widget now has a "Choose" button, which allows you to |
| 923 | choose a color via `list-colors-display'. |
| 924 | |
| 925 | ** D-Bus |
| 926 | |
| 927 | *** It is now possible to access buses other than the default system |
| 928 | or session bus. |
| 929 | |
| 930 | *** The `dbus-register-method' and `dbus-register-property' functions |
| 931 | optionally do not register names. |
| 932 | |
| 933 | *** The new function `dbus-register-service' registers a known service |
| 934 | name on a D-Bus without also registering a property or a method. |
| 935 | |
| 936 | ** Dired-x |
| 937 | |
| 938 | *** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'), |
| 939 | if called with a prefix argument, read a file name from the minibuffer |
| 940 | instead of using the current buffer. |
| 941 | |
| 942 | *** The "dired local variables" feature of Dired-x is obsolete. |
| 943 | The standard directory local variables feature replaces it. |
| 944 | |
| 945 | ** ERC changes |
| 946 | |
| 947 | *** New options `erc-autojoin-timing' and `erc-autojoin-delay', |
| 948 | controlling attempts to autojoin a channel. |
| 949 | |
| 950 | *** New variable `erc-coding-system-precedence': If we use `undecided' |
| 951 | as the server coding system, this variable will then be consulted. |
| 952 | The default is to decode strings that can be decoded as utf-8 as |
| 953 | utf-8, and do the normal `undecided' decoding for the rest. |
| 954 | |
| 955 | ** Eshell changes |
| 956 | |
| 957 | *** The default value of `eshell-directory-name' has changed |
| 958 | to be an "eshell" directory in `user-emacs-directory'. |
| 959 | The old "~/.eshell/" directory is still used if it exists, though. |
| 960 | |
| 961 | ** gdb-mi |
| 962 | |
| 963 | *** The M-x gdb command now uses the GDB Machine Interface protocol. |
| 964 | It now supports multithread non-stop debugging and simultaneous |
| 965 | debugging of several threads. |
| 966 | |
| 967 | ** Image mode |
| 968 | |
| 969 | *** RET (`image-toggle-animation') toggles animation, if applicable. |
| 970 | Animation plays once, unless the option `image-animate-loop' is non-nil. |
| 971 | |
| 972 | ** Info |
| 973 | |
| 974 | *** New command M-x info-display-manual displays a named Info manual. |
| 975 | If that manual is already visited in some Info buffer, it displays |
| 976 | that buffer. (This is handy if you have many manuals in many *info* |
| 977 | buffers, and don't remember the name of the buffer visiting the manual |
| 978 | you want to consult.) Otherwise, it loads and displays the manual. |
| 979 | |
| 980 | *** `e' is now bound to `end-of-buffer' rather than to `Info-edit'. |
| 981 | This is for compatibility with the stand-alone Info reader program, |
| 982 | and also because `Info-edit' is a rarely used command that is disabled |
| 983 | by default. |
| 984 | |
| 985 | ** Mail mode changes (not Message mode) |
| 986 | |
| 987 | *** New command M-x mail-add-attachment for adding MIME attachments |
| 988 | |
| 989 | *** The command M-x mail-attach-file was renamed to M-x mail-insert-file. |
| 990 | (Its name is misleading, since it has nothing to do with MIME |
| 991 | attachments.) The old name is now an obsolete alias to the new name. |
| 992 | |
| 993 | ** MH-E has been updated to MH-E version 8.3.1. |
| 994 | See MH-E-NEWS for details. |
| 995 | |
| 996 | ** Modula-2 mode provides auto-indentation. |
| 997 | |
| 998 | ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags. |
| 999 | |
| 1000 | ** nXML mode no longer binds C-RET to `nxml-complete'. |
| 1001 | Completion is now performed via `completion-at-point', bound to C-M-i |
| 1002 | or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the |
| 1003 | default), this performs tag completion. |
| 1004 | |
| 1005 | ** Org mode has been updated to version 7.8.09. |
| 1006 | See ORG-NEWS for details. |
| 1007 | |
| 1008 | ** Prolog mode has been completely revamped, with lots of additional |
| 1009 | functionality such as more intelligent indentation, electricity, |
| 1010 | support for more variants, including Mercury, and a lot more. |
| 1011 | |
| 1012 | ** Rmail |
| 1013 | |
| 1014 | *** The command `rmail-epa-decrypt' decrypts OpenPGP data |
| 1015 | in the Rmail incoming message. |
| 1016 | |
| 1017 | *** The variable `rmail-message-filter' no longer has any effect. |
| 1018 | This change was made in Emacs 23.1 but was not advertised at the time. |
| 1019 | Try using `rmail-show-message-hook' instead. |
| 1020 | |
| 1021 | ** Shell mode |
| 1022 | |
| 1023 | *** M-x shell prompts for the shell path name if the default directory |
| 1024 | is a remote file name and neither the environment variable $ESHELL nor |
| 1025 | the variable `explicit-shell-file-name' is set. |
| 1026 | |
| 1027 | *** TAB is now bound to the standard `completion-at-point' command, |
| 1028 | which now implements the pcomplete rules for shell command completion. |
| 1029 | |
| 1030 | ** SMTPmail |
| 1031 | |
| 1032 | *** SMTPmail now uses encrypted connections (via STARTTLS) by default |
| 1033 | if the mail server supports them. This uses either built-in GnuTLS |
| 1034 | support, or the starttls.el library. Customize `smtpmail-stream-type' |
| 1035 | to change this. |
| 1036 | |
| 1037 | *** The variable `smtpmail-auth-credentials' has been removed. |
| 1038 | By default, the information is now stored in the file ~/.authinfo. |
| 1039 | This was the default value of smtpmail-auth-credentials. If you had |
| 1040 | customized smtpmail-auth-credentials to a list of user names and |
| 1041 | passwords, those settings are not used. During your first connection |
| 1042 | to the smtp server, Emacs will prompt for the user name and password, |
| 1043 | and offer to save them to ~/.authinfo. Or you can manually copy the |
| 1044 | credentials to ~/.authinfo. For example, if you had |
| 1045 | |
| 1046 | (setq smtpmail-auth-credentials |
| 1047 | '(("mail.example.org" 25 "jim" "s!cret"))) |
| 1048 | |
| 1049 | then the equivalent line in ~/.authinfo would be |
| 1050 | |
| 1051 | machine mail.example.org port 25 login jim password s!cret |
| 1052 | |
| 1053 | See the auth-source manual for more information, e.g. on encrypting |
| 1054 | the credentials file. |
| 1055 | |
| 1056 | *** The variable `smtpmail-starttls-credentials' has been removed. |
| 1057 | If you had that set, you need to put |
| 1058 | |
| 1059 | machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert" |
| 1060 | |
| 1061 | in your ~/.authinfo file instead. |
| 1062 | |
| 1063 | ** SQL mode |
| 1064 | |
| 1065 | *** New options `sql-port', `sql-connection-alist', `sql-send-terminator', |
| 1066 | and `sql-oracle-scan-on'. |
| 1067 | |
| 1068 | *** New options controlling prompting for login parameters. |
| 1069 | Each supported product has a custom variable `sql-*-login-params', |
| 1070 | which is a list of the parameters to be prompted for before a |
| 1071 | connection is established. |
| 1072 | |
| 1073 | *** The command `sql-product-interactive' now takes a prefix argument, |
| 1074 | which causes it to prompt for an SQL product. |
| 1075 | |
| 1076 | *** Product-specific SQL interactive commands now take prefix arguments. |
| 1077 | These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.), |
| 1078 | given a prefix argument, prompt for a name for the SQL interactive |
| 1079 | buffer. This reduces the need for calling `sql-rename-buffer'. |
| 1080 | |
| 1081 | *** SQL interactive modes suppress command continuation prompts, and |
| 1082 | replace tabs with spaces. The first change impacts multiple line SQL |
| 1083 | statements entered with C-j between each line, statements yanked into |
| 1084 | the buffer and statements sent with `sql-send-*' functions. The |
| 1085 | second prevents the MySQL and Postgres interpreters from listing |
| 1086 | object name completions when sent text via `sql-send-*' functions. |
| 1087 | |
| 1088 | *** New command `sql-connect' starts a predefined SQLi session, |
| 1089 | using the login parameters from `sql-connection-alist'. |
| 1090 | |
| 1091 | *** New "Save Connection" menu item in SQLi buffers. |
| 1092 | This gathers the login params specified for the SQLi session, if it |
| 1093 | was not started by a connection, and saves them as a new connection. |
| 1094 | |
| 1095 | *** New commands for listing database objects and details: |
| 1096 | sql-list-all and sql-list-table. |
| 1097 | |
| 1098 | *** An API for manipulating SQL product definitions has been added. |
| 1099 | |
| 1100 | ** TeX modes |
| 1101 | |
| 1102 | *** latex-electric-env-pair-mode keeps \begin..\end matched on the fly. |
| 1103 | |
| 1104 | ** Tramp |
| 1105 | |
| 1106 | *** New inline access method "ksu" (kerberized su). |
| 1107 | |
| 1108 | *** The following access methods are discontinued: "ssh1_old", |
| 1109 | "ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish". |
| 1110 | |
| 1111 | *** The user option `remote-file-name-inhibit-cache' controls whether |
| 1112 | remote file attributes are cached for better performance. |
| 1113 | |
| 1114 | *** The option `ange-ftp-binary-file-name-regexp' has changed its |
| 1115 | default value to "". |
| 1116 | |
| 1117 | *** Handlers for `file-selinux-context' and `set-file-selinux-context' |
| 1118 | for remote machines which support SELinux. |
| 1119 | |
| 1120 | ** New function `url-queue-retrieve', which behaves like url-retrieve, |
| 1121 | but with limits (`url-queue-parallel-processes', `url-queue-timeout') on |
| 1122 | the degree of parallelism. |
| 1123 | |
| 1124 | ** VC and related modes |
| 1125 | |
| 1126 | *** Support for pulling on distributed version control systems. |
| 1127 | The command C-x v + (`vc-pull') runs a "pull" operation, if it is |
| 1128 | supported (currently with Bzr, Git, and Mercurial), to update the |
| 1129 | current branch and working tree. A prefix argument means to prompt |
| 1130 | the user for specifics, e.g. a pull location. |
| 1131 | |
| 1132 | *** `vc-update' is now an alias for `vc-pull'. |
| 1133 | |
| 1134 | *** Support for merging on distributed version control systems. |
| 1135 | The command C-x v m (`vc-merge') now runs a "merge" operation, if it |
| 1136 | is supported (currently with Bzr, Git, and Mercurial), to merge |
| 1137 | changes from another branch into the current one. It prompts for |
| 1138 | specifics, e.g. a merge source. |
| 1139 | |
| 1140 | *** New option `vc-revert-show-diff' controls whether `vc-revert' |
| 1141 | shows a diff while querying the user. It defaults to t. |
| 1142 | |
| 1143 | *** Log entries in some Log View buffers can be toggled to display a |
| 1144 | longer description by typing RET (log-view-toggle-entry-display). |
| 1145 | This is currently supported for Bzr, Git, and Mercurial (to support |
| 1146 | another backend, define a `log-view-expanded-log-entry-function'). |
| 1147 | In the Log View buffers made by C-x v L (`vc-print-root-log'), you can |
| 1148 | use this to display the full log entry for the revision at point. |
| 1149 | |
| 1150 | *** New command `vc-ediff' allows visual comparison of two revisions |
| 1151 | of a file similar to `vc-diff', but using ediff backend. |
| 1152 | |
| 1153 | *** The option `vc-initial-comment' was removed in Emacs 23.2, but |
| 1154 | this was not advertised at the time. |
| 1155 | |
| 1156 | *** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'. |
| 1157 | Since Emacs 23, it has done the same thing as `toggle-read-only', but |
| 1158 | this was not advertised at the time. |
| 1159 | |
| 1160 | ** Obsolete modes |
| 1161 | |
| 1162 | *** abbrevlist.el |
| 1163 | |
| 1164 | *** erc-hecomplete.el (use erc-pcomplete.el instead) |
| 1165 | |
| 1166 | *** partial-completion-mode (complete.el) is obsolete. |
| 1167 | You can get a comparable behavior with: |
| 1168 | (setq completion-styles '(partial-completion initials)) |
| 1169 | (setq completion-pcm-complete-word-inserts-delimiters t) |
| 1170 | |
| 1171 | *** pc-mode.el is obsolete (CUA mode is much more comprehensive). |
| 1172 | |
| 1173 | *** pgg is obsolete (use EasyPG instead). |
| 1174 | |
| 1175 | *** sregex.el is obsolete, since rx.el is a strict superset. |
| 1176 | |
| 1177 | *** s-region.el and pc-select.el are obsolete. |
| 1178 | They are superseded by shift-select-mode, enabled by default since 23.1. |
| 1179 | |
| 1180 | *** vc-mcvs.el is obsolete (for lack of a maintainer). |
| 1181 | |
| 1182 | ** Miscellaneous |
| 1183 | |
| 1184 | *** The Landmark game is now invoked with `landmark', not `lm'. |
| 1185 | Its functions and variables have been similarly renamed. |
| 1186 | |
| 1187 | *** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'. |
| 1188 | (This interfered with cua-mode.) |
| 1189 | |
| 1190 | *** f90.el has some support for Fortran 2008 syntax. |
| 1191 | |
| 1192 | *** `copyright-fix-years' can optionally convert consecutive years to ranges. |
| 1193 | |
| 1194 | *** New command `nato-region' converts text to NATO phonetic alphabet. |
| 1195 | |
| 1196 | \f |
| 1197 | * New Modes and Packages in Emacs 24.1 |
| 1198 | |
| 1199 | ** Occur Edit mode applies edits made in *Occur* buffers to the |
| 1200 | original buffers. It is bound to "e" in Occur mode. |
| 1201 | |
| 1202 | ** New global minor mode electric-pair-mode. |
| 1203 | When enabled, typing an open parenthesis automatically inserts the |
| 1204 | matching closing one. |
| 1205 | |
| 1206 | ** New global minor mode electric-indent-mode. |
| 1207 | When enabled, typing certain characters triggers reindentation. |
| 1208 | Major modes wishing to use this can set electric-indent-chars or |
| 1209 | electric-indent-functions. |
| 1210 | |
| 1211 | ** New global minor mode electric-layout-mode. |
| 1212 | When enabled, typing certain characters automatically inserts newlines. |
| 1213 | Major modes wishing to use this can set electric-layout-rules. |
| 1214 | |
| 1215 | ** tabulated-list.el provides a generic major mode for tabulated data, |
| 1216 | from which other modes can be derived. |
| 1217 | |
| 1218 | ** pcase.el provides the ML-style pattern matching macro `pcase'. |
| 1219 | |
| 1220 | ** secrets.el is an implementation of the Secret Service API, an |
| 1221 | interface to password managers like GNOME Keyring or KDE Wallet. The |
| 1222 | Secret Service API requires D-Bus for communication. The command |
| 1223 | `secrets-show-secrets' offers a buffer with a visualization of the |
| 1224 | secrets. |
| 1225 | |
| 1226 | ** notifications.el provides an implementation of the Desktop |
| 1227 | Notifications API. It requires D-Bus for communication. |
| 1228 | |
| 1229 | ** soap-client.el supports access to SOAP web services from Emacs. |
| 1230 | soap-inspect.el is an interactive inspector for SOAP WSDL structures. |
| 1231 | |
| 1232 | ** New generic mode, xmodmap-generic-mode, for xmodmap files. |
| 1233 | |
| 1234 | ** New emacs-lock.el package. |
| 1235 | The previous version has been moved to obsolete/old-emacs-lock.el. |
| 1236 | Now, there is a proper minor mode `emacs-lock-mode'. Protection |
| 1237 | against exiting Emacs and killing the buffer can be set separately. |
| 1238 | The mechanism for automatically turning off protection for buffers |
| 1239 | with dead inferior processes has been generalized. |
| 1240 | |
| 1241 | \f |
| 1242 | * Incompatible Lisp Changes in Emacs 24.1 |
| 1243 | |
| 1244 | ** Passing a nil argument to a minor mode function call now ENABLES |
| 1245 | the minor mode unconditionally. This is so that you can write e.g. |
| 1246 | |
| 1247 | (add-hook 'text-mode-hook 'foo-mode) |
| 1248 | |
| 1249 | to enable foo-mode in Text mode buffers, removing the need for |
| 1250 | `turn-on-foo-mode' style functions. This affects all mode commands |
| 1251 | defined by `define-minor-mode'. If called interactively, the mode |
| 1252 | command still toggles the minor mode. |
| 1253 | |
| 1254 | ** The return value of `backup-buffer' has changed. |
| 1255 | It is now a list of three elements, where the second element is a list |
| 1256 | describing the original file's SELinux context. If Emacs or the |
| 1257 | system lacks SELinux support, the context list is (nil nil nil nil). |
| 1258 | See "Basic SELinux support" above, under "Changes in Emacs 24.1". |
| 1259 | |
| 1260 | ** `char-direction-table' and the `char-direction' function were deleted. |
| 1261 | They were buggy and inferior to the new support of bidirectional |
| 1262 | editing introduced in Emacs 24. If you need the bidirectional |
| 1263 | properties of a character, use `get-char-code-property' with the last |
| 1264 | argument `bidi-class'. |
| 1265 | |
| 1266 | ** `copy-directory' now copies the source directory as a subdirectory |
| 1267 | of the target directory, if the latter is an existing directory. The |
| 1268 | new optional arg COPY-CONTENTS, if non-nil, makes the function copy |
| 1269 | the contents directly into a pre-existing target directory. |
| 1270 | |
| 1271 | ** For mouse click input events in the text area, the Y pixel |
| 1272 | coordinate in the POSITION list now counts from the top of the text |
| 1273 | area, excluding any header line. Previously, it counted from the top |
| 1274 | of the header line. |
| 1275 | |
| 1276 | ** Support for "old-style" backquotes, obsolete for 10+ years, has |
| 1277 | been further reduced. Now a backquote not followed by a space is |
| 1278 | always treated as a "new-style" backquote. Please remove all |
| 1279 | "old-style" backquotes from your code. If your code uses backquotes |
| 1280 | as documented in the Elisp manual, and compiles without warning, then |
| 1281 | you have nothing to do in this regard. Code not following the |
| 1282 | appropriate conventions may fail to compile. |
| 1283 | |
| 1284 | The most common cause of trouble seems to be an old-style backquote |
| 1285 | followed by a newline. Another cause of trouble is vector notation |
| 1286 | for key sequence notation: instead of [(control ,)] and [(control ')], |
| 1287 | you should write [(control ?,)] and [(control ?')], which will work in |
| 1288 | older Emacsen too. |
| 1289 | |
| 1290 | ** The macro `eval-at-startup' was removed in Emacs 23.2, but this |
| 1291 | was not advertised at the time. The function `custom-initialize-delay' |
| 1292 | replaced all known uses. |
| 1293 | |
| 1294 | ** `view-buffer' now treats special mode-class in the same way that |
| 1295 | `view-file' has since Emacs 22 (i.e. it won't enable View mode if the |
| 1296 | major mode is special). |
| 1297 | |
| 1298 | ** Menu and tool bar changes |
| 1299 | |
| 1300 | *** During startup, Emacs no longer adds entries for `menu-bar-lines' |
| 1301 | and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'. |
| 1302 | With these alist entries omitted, `make-frame' checks the value of the |
| 1303 | variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create |
| 1304 | a menu-bar or tool-bar, respectively. If the alist entries are added, |
| 1305 | they override the value of `menu-bar-mode'/`tool-bar-mode'. |
| 1306 | |
| 1307 | *** The menu bar bindings's caches are not used any more. |
| 1308 | Use (where-is-internal <def> nil t) instead. |
| 1309 | |
| 1310 | ** Regions created by mouse dragging are now normal active regions, |
| 1311 | similar to those created by shift-selection (see Selection changes |
| 1312 | above). In previous Emacs versions, these regions were delineated by |
| 1313 | `mouse-drag-overlay'; that variable has been removed. |
| 1314 | |
| 1315 | ** The fourth argument of `filter-buffer-substring' has been removed. |
| 1316 | If you want to remove text properties from the final result, simply |
| 1317 | pass the result through substring-no-properties. |
| 1318 | |
| 1319 | ** cl.el no longer provides `cl-19'. |
| 1320 | |
| 1321 | ** The following obsolete functions and aliases have been removed |
| 1322 | (the appropriate new function is given in parentheses; "not needed" |
| 1323 | means you can just remove all calls to the function in question): |
| 1324 | |
| 1325 | *** `comint-kill-output' (`comint-delete-output') |
| 1326 | *** `decompose-composite-char' (`char-to-string') |
| 1327 | *** `outline-visible' (`outline-invisible-p') |
| 1328 | *** `internal-find-face' (`facep') |
| 1329 | *** `internal-get-face' (`facep and check-face') |
| 1330 | *** `frame-update-faces' (not needed) |
| 1331 | *** `frame-update-face-colors' (`frame-set-background-mode') |
| 1332 | *** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions) |
| 1333 | *** `x-make-font-bold and x-make-font-demibold (`make-face-bold') |
| 1334 | *** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic') |
| 1335 | *** `x-make-font-bold-italic' (`make-face-bold-italic') |
| 1336 | *** `x-make-font-unbold' (`make-face-unbold') |
| 1337 | *** `x-make-font-unitalic' (`make-face-unitalic') |
| 1338 | *** `mldrag-drag-mode-line' (`mouse-drag-mode-line') |
| 1339 | *** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line') |
| 1340 | *** `iswitchb-default-keybindings' (`iswitchb-mode') |
| 1341 | *** `char-bytes' (== 1) |
| 1342 | *** `isearch-return-char' (`isearch-printing-char') |
| 1343 | *** `make-local-hook' (not needed) |
| 1344 | *** `set-screen-height' (`set-frame-height') |
| 1345 | *** `set-screen-width' (`set-frame-width') |
| 1346 | |
| 1347 | ** The following obsolete variables and varaliases have been removed |
| 1348 | (the appropriate new variable is given in parentheses): |
| 1349 | |
| 1350 | *** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map') |
| 1351 | *** `vc-header-alist' (`vc-BACKEND-header') |
| 1352 | *** `directory-sep-char' (== ?/) |
| 1353 | *** `font-lock-defaults-alist' (`font-lock-defaults') |
| 1354 | *** `e' (`float-e'). |
| 1355 | |
| 1356 | ** The following obsolete files were removed: |
| 1357 | sc.el, x-menu.el, rnews.el, rnewspost.el |
| 1358 | |
| 1359 | ** The format of the finder-inf.el file has changed, since the Finder |
| 1360 | mechanism is now based on the package system. The variable |
| 1361 | `finder-package-info' is replaced by `package--builtins' and |
| 1362 | `finder-keywords-hash'. |
| 1363 | |
| 1364 | ** When generating autoloads, `update-directory-autoloads' no longer |
| 1365 | assumes every inspected file is in your `load-path'. It instead |
| 1366 | generates relative names according to the current `load-path'. |
| 1367 | |
| 1368 | \f |
| 1369 | * Lisp changes in Emacs 24.1 |
| 1370 | |
| 1371 | ** Code can now use lexical scoping by default instead of dynamic scoping. |
| 1372 | The `lexical-binding' variable enables lexical scoping for local |
| 1373 | variables. It is typically set via a file-local variable in the first |
| 1374 | line of the file, in which case it applies to all the code in that |
| 1375 | file. |
| 1376 | |
| 1377 | *** `eval' takes a new optional argument `lexical' to choose the new lexical |
| 1378 | binding instead of the old dynamic binding mode. |
| 1379 | |
| 1380 | *** Lexically scoped interpreted functions are represented with a new form |
| 1381 | of function value which looks like (closure ENV ARGS &rest BODY). |
| 1382 | |
| 1383 | *** New macro `letrec' to define recursive local functions. |
| 1384 | |
| 1385 | *** `defvar' and `defconst' now mark the variable as special (dynamic). |
| 1386 | So do `defcustom' and other forms that call `defvar' as a subroutine. |
| 1387 | |
| 1388 | *** New function `special-variable-p' to check whether a variable is |
| 1389 | declared as dynamically bound. |
| 1390 | |
| 1391 | *** The form ((lambda ...) ...) is deprecated. |
| 1392 | |
| 1393 | ** An Emacs Lisp testing tool is now included. |
| 1394 | Emacs Lisp developers can use this tool to write automated tests for |
| 1395 | their code. See the ERT info manual for details. |
| 1396 | |
| 1397 | ** Changes for bidirectional display and editing |
| 1398 | |
| 1399 | *** New function `current-bidi-paragraph-direction'. |
| 1400 | This returns the base direction of the paragraph at point. |
| 1401 | |
| 1402 | *** New function `bidi-string-mark-left-to-right'. |
| 1403 | Given a string containing characters from right-to-left scripts, this |
| 1404 | function returns another string which can be safely inserted into a |
| 1405 | buffer, such that any following text will be always displayed to the |
| 1406 | right of that string. (This works by appending an invisible Unicode |
| 1407 | "LEFT-TO-RIGHT MARK" character if the argument string might need it.) |
| 1408 | |
| 1409 | This is useful when the buffer has overall left-to-right paragraph |
| 1410 | direction and you need to insert a string whose contents are not known |
| 1411 | in advance, without disrupting the layout of the line. |
| 1412 | |
| 1413 | ** Window changes |
| 1414 | |
| 1415 | *** Window tree functions are accessible in Elisp. |
| 1416 | Functions are provided to return the parent, siblings or child windows |
| 1417 | of any window including internal windows (windows not associated with a |
| 1418 | buffer) in the window tree. |
| 1419 | |
| 1420 | **** New function `window-valid-p' gives non-nil for live and internal |
| 1421 | windows. |
| 1422 | |
| 1423 | **** Window manipulation can deal with internal windows. |
| 1424 | Many window handling functions like `split-window', `delete-window', or |
| 1425 | `delete-other-windows' as well as the window resizing functions can now |
| 1426 | act on any window including internal ones. |
| 1427 | |
| 1428 | *** window-total-height/-width vs window-body-height/-width. |
| 1429 | The function `window-height' has been renamed to `window-total-height' |
| 1430 | and `window-width' has been renamed to `window-body-width'. The old |
| 1431 | names are provided as aliases. Two new functions `window-total-width' |
| 1432 | and `window-body-height' are provided. |
| 1433 | |
| 1434 | *** Window parameters specific to window handling functions. |
| 1435 | For each window you can specify a parameter to override the default |
| 1436 | behavior of a number of functions like `split-window', `delete-window' |
| 1437 | and `delete-other-windows'. The variable `ignore-window-parameters' |
| 1438 | allows to ignore processing such parameters. |
| 1439 | |
| 1440 | *** New semantics of third argument of `split-window'. |
| 1441 | The third argument of `split-window' has been renamed to SIDE and can be |
| 1442 | set to any of the values 'below, 'right, 'above, or 'left to make the |
| 1443 | new window appear on the corresponding side of the window that shall be |
| 1444 | split. Any other value of SIDE will cause `split-window' to split the |
| 1445 | window into two side-by-side windows as before. |
| 1446 | |
| 1447 | *** Window resizing functions. |
| 1448 | A new standard function for resizing windows called `window-resize' has |
| 1449 | been introduced. This and all other functions for resizing windows no |
| 1450 | longer delete any windows when they become too small. |
| 1451 | |
| 1452 | *** Deleting the selected window now selects the most recently selected |
| 1453 | live window on that frame instead. |
| 1454 | |
| 1455 | *** `adjust-window-trailing-edge' adjustments. |
| 1456 | `adjust-window-trailing-edge' can now deal with fixed-size windows and |
| 1457 | is able to resize other windows if a window adjacent to the trailing |
| 1458 | edge cannot be shrunk any more. This makes its behavior more similar to |
| 1459 | that of Emacs 21 without compromising, however, its inability to delete |
| 1460 | windows which was introduced in Emacs 22. |
| 1461 | |
| 1462 | *** Window-local buffer lists. |
| 1463 | Windows now have local buffer lists. This means that removing a buffer |
| 1464 | from display in a window will preferably show the buffer previously |
| 1465 | shown in that window with its previous window-start and window-point |
| 1466 | positions. This also means that the same buffer may be automatically |
| 1467 | shown twice even if it already appears in another window. |
| 1468 | |
| 1469 | *** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW, |
| 1470 | which if non-nil requires the buffer to be displayed in the currently |
| 1471 | selected window, signaling an error otherwise. If nil, another window |
| 1472 | can be used, e.g. if the selected one is strongly dedicated. |
| 1473 | |
| 1474 | *** `split-window-vertically' and `split-window-horizontally' renamed |
| 1475 | to `split-window-below' and `split-window-right' respectively. |
| 1476 | The old names are kept as aliases. |
| 1477 | |
| 1478 | *** Display actions |
| 1479 | |
| 1480 | **** The second arg to `display-buffer' and `pop-to-buffer' is now |
| 1481 | named ACTION, and takes a display action of the same form as |
| 1482 | `display-buffer-base-action' (see Changes, above). A non-nil, |
| 1483 | non-list value is treated specially, as the old meaning. |
| 1484 | |
| 1485 | **** New variable `display-buffer-overriding-action'. |
| 1486 | |
| 1487 | **** The procedure of `display-buffer' etc. to choose a window is |
| 1488 | determined by combining `display-buffer-overriding-action', |
| 1489 | `display-buffer-alist', the ACTION arg, `display-buffer-base-action', |
| 1490 | and `display-buffer-fallback-action'. The second and fourth of these |
| 1491 | are user-customizable variables. |
| 1492 | |
| 1493 | See the docstring of `display-buffer' for details. |
| 1494 | |
| 1495 | *** New functions `window-state-get' and `window-state-put'. |
| 1496 | These functions allow to save and restore the state of an arbitrary |
| 1497 | frame or window as an Elisp object. |
| 1498 | |
| 1499 | ** Completion |
| 1500 | |
| 1501 | *** New variable `completion-extra-properties' used to specify extra |
| 1502 | properties of the current completion: |
| 1503 | - :annotate-function, same as the old completion-annotate-function. |
| 1504 | - :exit-function, function to call after completion took place. |
| 1505 | |
| 1506 | *** Functions on `completion-at-point-functions' can return any of the |
| 1507 | properties valid for `completion-extra-properties'. |
| 1508 | |
| 1509 | *** `completion-annotate-function' is obsolete. |
| 1510 | |
| 1511 | *** New `metadata' method for completion tables. The metadata thus returned |
| 1512 | can specify various details of the data returned by `all-completions': |
| 1513 | - `category' is the kind of objects returned (e.g., `buffer', `file', ...), |
| 1514 | used to select a style in completion-category-overrides. |
| 1515 | - `annotation-function' to add annotations in *Completions*. |
| 1516 | - `display-sort-function' to specify how to sort entries in *Completions*. |
| 1517 | - `cycle-sort-function' to specify how to sort entries when cycling. |
| 1518 | |
| 1519 | *** `minibuffer-local-filename-must-match-map' is not used any more. |
| 1520 | Instead, the bindings in `minibuffer-local-filename-completion-map' |
| 1521 | are combined with `minibuffer-local-must-match-map'. |
| 1522 | |
| 1523 | *** New variable `completing-read-function' allows overriding the |
| 1524 | behavior of `completing-read'. |
| 1525 | |
| 1526 | ** `glyphless-char-display' can now distinguish between graphical and |
| 1527 | text terminal display, via a char-table entry that is a cons cell. |
| 1528 | |
| 1529 | ** `pre-command-hook'/`post-command-hook' are not reset to nil on error. |
| 1530 | Instead, the offending function is removed. |
| 1531 | |
| 1532 | ** New hook types |
| 1533 | |
| 1534 | *** New function `run-hook-wrapped' for running an abnormal hook by |
| 1535 | passing the hook functions as arguments to a "wrapping" function. |
| 1536 | Like `run-hook-with-args-until-success', it stops at the first |
| 1537 | non-nil return value. |
| 1538 | |
| 1539 | *** New macro `with-wrapper-hook' for running an abnormal hook as a |
| 1540 | set of "wrapping" filters, similar to around advice. |
| 1541 | (A version of this macro was actually added in Emacs 23.2 but was not |
| 1542 | advertised at the time.) |
| 1543 | |
| 1544 | ** Debugger changes |
| 1545 | |
| 1546 | *** New macro `condition-case-unless-debug' (this was actually added in |
| 1547 | Emacs 23.1 as condition-case-no-debug, but not advertised) |
| 1548 | |
| 1549 | *** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised. |
| 1550 | |
| 1551 | *** Variable `stack-trace-on-error' removed. |
| 1552 | |
| 1553 | *** The debugger can now "continue" from an error, which means it will |
| 1554 | jump to the error handler as if the debugger had not been invoked |
| 1555 | instead of jumping all the way to the top-level. |
| 1556 | |
| 1557 | *** Set `debug-on-event' to enter the debugger on events like SIGUSR1. |
| 1558 | This can be useful when `inhibit-quit' is set. |
| 1559 | |
| 1560 | ** The new function `server-eval-at' allows evaluation of Lisp forms on |
| 1561 | named Emacs server instances. |
| 1562 | |
| 1563 | ** `call-process' and `call-process-region' allow a `(:file "file")' spec |
| 1564 | to redirect STDOUT to a file. |
| 1565 | |
| 1566 | ** The function `format-time-string' now supports the %N directive, |
| 1567 | for higher-resolution time stamps. |
| 1568 | |
| 1569 | ** New input reading functions |
| 1570 | |
| 1571 | *** New function `read-char-choice' reads a restricted set of |
| 1572 | characters, discarding any inputs not inside the set. |
| 1573 | |
| 1574 | *** The command `read-color' now requires a match for a color name |
| 1575 | or RGB triplet, instead of signaling an error if the user provides |
| 1576 | invalid input. |
| 1577 | |
| 1578 | **** `facemenu-read-color' is now an alias for `read-color'. |
| 1579 | |
| 1580 | ** `image-library-alist' is renamed to `dynamic-library-alist'. |
| 1581 | The variable is now used to load all kind of supported dynamic libraries, |
| 1582 | not just image libraries. The previous name is still available as an |
| 1583 | obsolete alias. |
| 1584 | |
| 1585 | ** Syntax parsing changes |
| 1586 | |
| 1587 | *** New variable `syntax-propertize-function'. |
| 1588 | This replaces `font-lock-syntactic-keywords' which is now obsolete. |
| 1589 | This allows syntax-table properties to be set independently from font-lock: |
| 1590 | just call syntax-propertize to make sure the text is propertized. |
| 1591 | Together with this new variable come a new hook |
| 1592 | syntax-propertize-extend-region-functions, as well as two helper functions: |
| 1593 | syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords |
| 1594 | as-is; and syntax-propertize-rules which provides a new way to specify |
| 1595 | syntactic rules. |
| 1596 | |
| 1597 | *** Syntax tables support a new "comment style c" additionally to style b. |
| 1598 | |
| 1599 | ** New hook `post-self-insert-hook', run after `self-insert-command'. |
| 1600 | |
| 1601 | ** frame-local variables cannot be let-bound any more. |
| 1602 | |
| 1603 | ** Major and minor mode changes |
| 1604 | |
| 1605 | *** `set-auto-mode' now respects mode: local variables at the end of files, |
| 1606 | as well as those in the -*- line. |
| 1607 | |
| 1608 | *** `prog-mode' is a new major mode from which programming modes |
| 1609 | should be derived. |
| 1610 | |
| 1611 | **** `prog-mode-hook' can be used to enable features for programming |
| 1612 | modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable |
| 1613 | on-the-fly spell checking for comments and strings. |
| 1614 | |
| 1615 | *** New hook `change-major-mode-after-body-hook', run by |
| 1616 | `run-mode-hooks' just before any other mode hooks. |
| 1617 | |
| 1618 | *** Enabled globalized minor modes can be disabled in specific major modes. |
| 1619 | If the global mode is global-FOO-mode, then run (FOO-mode -1) in the |
| 1620 | major mode's hook, where FOO-mode toggles the mode on a per-buffer basis. |
| 1621 | |
| 1622 | *** `define-minor-mode' accepts new keywords :variable, :after-hook. |
| 1623 | |
| 1624 | ** File-handling changes |
| 1625 | |
| 1626 | *** `delete-file' and `delete-directory' now accept optional arg TRASH. |
| 1627 | Trashing is performed if TRASH and `delete-by-moving-to-trash' are |
| 1628 | both non-nil. Interactively, TRASH defaults to t, unless a prefix |
| 1629 | argument is supplied (see Trash changes, above). |
| 1630 | |
| 1631 | *** New file predicates: `file-equal-p', `file-in-directory-p'. |
| 1632 | |
| 1633 | ** Tool-bars can display separators. |
| 1634 | Tool-bar separators are handled like menu separators in menu-bar maps, |
| 1635 | i.e. via menu entries of the form `(menu-item "--")'. |
| 1636 | |
| 1637 | ** Image API |
| 1638 | |
| 1639 | *** Animated images support (currently animated gifs only). |
| 1640 | |
| 1641 | **** `image-animated-p' returns non-nil if an image can be animated. |
| 1642 | |
| 1643 | **** `image-animate' animates a supplied image spec. |
| 1644 | |
| 1645 | **** `image-animate-timer' returns the timer object for an image that |
| 1646 | is being animated. |
| 1647 | |
| 1648 | *** `image-extension-data' has been renamed to `image-metadata'. |
| 1649 | The old name is an obsolete alias to the new one. |
| 1650 | |
| 1651 | *** Image mode can view any image type that ImageMagick supports. |
| 1652 | This requires Emacs to be built with ImageMagick support. |
| 1653 | |
| 1654 | **** New function `imagemagick-types', defined if ImageMagick support |
| 1655 | is enabled, returns a list of image file extensions that your |
| 1656 | ImageMagick installation supports. |
| 1657 | |
| 1658 | **** New function `imagemagick-register-types' enables ImageMagick |
| 1659 | image types in Image mode and in `create-image' and other helper |
| 1660 | functions. |
| 1661 | |
| 1662 | **** New option `imagemagick-types-inhibit' excludes certain |
| 1663 | ImageMagick image types from `imagemagick-register-types'. |
| 1664 | |
| 1665 | **** With ImageMagick support, there are extra Image mode commands to |
| 1666 | resize and rotate images: `image-transform-fit-to-height', |
| 1667 | `image-transform-fit-to-width', `image-transform-set-rotation', and |
| 1668 | `image-transform-set-scale'. |
| 1669 | |
| 1670 | ** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and |
| 1671 | passes it to the mail user agent function. This argument specifies an |
| 1672 | action for returning to the caller after finishing with the mail. For |
| 1673 | example, this is used by Rmail to optionally delete a mail window. |
| 1674 | |
| 1675 | ** XML and HTML parsing |
| 1676 | If Emacs is compiled with libxml2 support, there are two new |
| 1677 | functions: `libxml-parse-html-region' (which parses "real world" HTML) |
| 1678 | and `libxml-parse-xml-region' (which parses XML). Both return an |
| 1679 | Emacs Lisp parse tree. |
| 1680 | |
| 1681 | ** Networking and encryption changes |
| 1682 | |
| 1683 | *** `open-network-stream' can now be used to open an encrypted stream. |
| 1684 | It now accepts an optional `:type' parameter for initiating a TLS |
| 1685 | connection, directly or via STARTTLS. To do STARTTLS, additional |
| 1686 | parameters (`:end-of-command', `:success', `:capabilities-command') |
| 1687 | must also be supplied. |
| 1688 | |
| 1689 | *** New library gnutls.el. |
| 1690 | The new function `gnutls-available-p' returns non-nil if Emacs is |
| 1691 | built with GnuTLS support. The main entry points are |
| 1692 | `open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use |
| 1693 | these functions through `open-network-stream', because that can |
| 1694 | upgrade connections through STARTTLS opportunistically or use plain |
| 1695 | SSL, depending on your needs. For debugging, set `gnutls-log-level' |
| 1696 | greater than 0. |
| 1697 | |
| 1698 | *** New primitive `secure-hash' that supports many secure hash algorithms: |
| 1699 | md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library |
| 1700 | sha1.el has been removed. The `sha1' feature is provided by default. |
| 1701 | |
| 1702 | ** Isearch |
| 1703 | |
| 1704 | *** New hook `isearch-update-post-hook' that runs in `isearch-update'. |
| 1705 | |
| 1706 | ** Progress reporters can now "spin". |
| 1707 | The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can |
| 1708 | now be nil, or omitted. This makes a "non-numeric" reporter. Each |
| 1709 | time you call `progress-reporter-update' on that progress reporter, |
| 1710 | with a nil or omitted VALUE argument, the reporter message is |
| 1711 | displayed with a "spinning bar". |
| 1712 | |
| 1713 | ** New variable `revert-buffer-in-progress-p' is true while a buffer is |
| 1714 | being reverted, even if the buffer has a local `revert-buffer-function'. |
| 1715 | |
| 1716 | ** New variables `delayed-warnings-list' and `delayed-warnings-hook'. |
| 1717 | If delayed-warnings-list is non-nil, the command loop calls |
| 1718 | `delayed-warnings-hook' after `post-command-hook'. At present, this |
| 1719 | is only used by Emacs on some platforms to display warnings during |
| 1720 | startup, which might otherwise not be noticed. This uses the |
| 1721 | functions `display-delayed-warnings' and `collapse-delayed-warnings'. |
| 1722 | |
| 1723 | ** rx.el has a new `group-n' construct for explicitly numbered groups. |
| 1724 | |
| 1725 | ** New function `make-composed-keymap' that constructs a new keymap |
| 1726 | from multiple input maps. You can use this to make a keymap that |
| 1727 | inherits from multiple maps, eg: |
| 1728 | (set-keymap-parent newmap (make-composed-keymap othermap parent)) |
| 1729 | |
| 1730 | ** New function `string-prefix-p'. |
| 1731 | (This was actually added in Emacs 23.2 but was not advertised at the time.) |
| 1732 | |
| 1733 | ** New reader macro ## that stands for the empty symbol. |
| 1734 | This means that the empty symbol can now be read back. Also, #: by itself |
| 1735 | (when not immediately followed by a possible symbol character) stands for |
| 1736 | an empty uninterned symbol. |
| 1737 | |
| 1738 | ** New math functions `isnan', `copysign', `frexp', `ldexp'. |
| 1739 | |
| 1740 | ** The following functions and variables are obsolete: |
| 1741 | |
| 1742 | *** `tooltip-use-echo-area' is obsolete. |
| 1743 | Rather than setting this to t, disable Tooltip mode instead. |
| 1744 | |
| 1745 | *** buffer-substring-filters is obsolete. |
| 1746 | Use `filter-buffer-substring-functions' instead. |
| 1747 | |
| 1748 | *** `byte-compile-disable-print-circle' is obsolete. |
| 1749 | |
| 1750 | *** `deferred-action-list' and `deferred-action-function' are obsolete. |
| 1751 | Use `post-command-hook' instead. |
| 1752 | |
| 1753 | *** `font-lock-maximum-size' is obsolete. |
| 1754 | |
| 1755 | \f |
| 1756 | * Changes in Emacs 24.1 on non-free operating systems |
| 1757 | |
| 1758 | ** On MS Windows, Emacs warns when using the obsolete init file _emacs, |
| 1759 | and also when HOME is set to C:\ by default. |
| 1760 | |
| 1761 | ** New configure.bat options |
| 1762 | |
| 1763 | *** --enable-checking builds Emacs with extra runtime checks. |
| 1764 | |
| 1765 | *** --distfiles specifies files to be included in binary distribution. |
| 1766 | |
| 1767 | *** --without-gnutls disables automatic GnuTLS detection. |
| 1768 | |
| 1769 | *** --lib for general library linkage, works with the USER_LIBS build variable. |
| 1770 | |
| 1771 | ** New make target `dist' to create binary distribution for MS Windows. |
| 1772 | |
| 1773 | ** The Lisp function `w32-default-color-map' is now obsolete. |
| 1774 | (It is only used internally in the Emacs C code.) |
| 1775 | |
| 1776 | ** Customize ns-auto-hide-menu-bar to have the menu-bar hidden, but |
| 1777 | reappear on mouse-over. (Requires OS X 10.6 or later.) |
| 1778 | |
| 1779 | ** On Mac OS X, dragging a file into Emacs visits the file, like on |
| 1780 | other platforms, rather than inserting its contents into the buffer. |
| 1781 | |
| 1782 | \f |
| 1783 | ---------------------------------------------------------------------- |
| 1784 | This file is part of GNU Emacs. |
| 1785 | |
| 1786 | GNU Emacs is free software: you can redistribute it and/or modify |
| 1787 | it under the terms of the GNU General Public License as published by |
| 1788 | the Free Software Foundation, either version 3 of the License, or |
| 1789 | (at your option) any later version. |
| 1790 | |
| 1791 | GNU Emacs is distributed in the hope that it will be useful, |
| 1792 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 1793 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 1794 | GNU General Public License for more details. |
| 1795 | |
| 1796 | You should have received a copy of the GNU General Public License |
| 1797 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
| 1798 | |
| 1799 | \f |
| 1800 | Local variables: |
| 1801 | mode: outline |
| 1802 | paragraph-separate: "[ \f]*$" |
| 1803 | end: |