NEWS.21 187 KB
 Kim F. Storm committed Jun 04, 2006 1 GNU Emacs NEWS -- history of user-visible changes. 2006-05-31  Glenn Morris committed Feb 11, 2007 2   Glenn Morris committed Jan 26, 2011 3 Copyright (C) 2000-2011 Free Software Foundation, Inc.  Glenn Morris committed Feb 11, 2007 4 5 See the end of the file for license conditions.  Kim F. Storm committed Jun 04, 2006 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852  This file is about changes in emacs version 21. * Emacs 21.4 is a bug-fix release with no user-visible changes. * Installation changes in Emacs 21.3 ** Support for GNU/Linux on little-endian MIPS and on IBM S390 has been added. * Changes in Emacs 21.3 ** The obsolete C mode (c-mode.el) has been removed to avoid problems with Custom. ** UTF-16 coding systems are available, encoding the same characters as mule-utf-8. ** There is a new language environment for UTF-8 (set up automatically in UTF-8 locales). ** Translation tables are available between equivalent characters in different Emacs charsets -- for instance e with acute' coming from the Latin-1 and Latin-2 charsets. User options unify-8859-on-encoding-mode' and unify-8859-on-decoding-mode' respectively turn on translation between ISO 8859 character sets (unification') on encoding (e.g. writing a file) and decoding (e.g. reading a file). Note that unify-8859-on-encoding-mode' is useful and safe, but unify-8859-on-decoding-mode' can cause text to change when you read it and write it out again without edits, so it is not generally advisable. By default unify-8859-on-encoding-mode' is turned on. ** In Emacs running on the X window system, the default value of selection-coding-system' is now compound-text-with-extensions'. If you want the old behavior, set selection-coding-system to compound-text, which may be significantly more efficient. Using compound-text-with-extensions seems to be necessary only for decoding text from applications under XFree86 4.2, whose behavior is actually contrary to the compound text specification. * Installation changes in Emacs 21.2 ** Support for BSD/OS 5.0 has been added. ** Support for AIX 5.1 was added. * Changes in Emacs 21.2 ** Emacs now supports compound-text extended segments in X selections. X applications can use extended segments' to encode characters in compound text that belong to character sets which are not part of the list of approved standard encodings for X, e.g. Big5. To paste selections with such characters into Emacs, use the new coding system compound-text-with-extensions as the value of selection-coding-system. ** The default values of tooltip-delay' and tooltip-hide-delay' were changed. ** On terminals whose erase-char is ^H (Backspace), Emacs now uses normal-erase-is-backspace-mode. ** When the *scratch* buffer is recreated, its mode is set from initial-major-mode, which normally is lisp-interaction-mode, instead of using default-major-mode. ** The new option Info-scroll-prefer-subnodes' causes Info to behave like the stand-alone Info reader (from the GNU Texinfo package) as far as motion between nodes and their subnodes is concerned. If it is t (the default), Emacs behaves as before when you type SPC in a menu: it visits the subnode pointed to by the first menu entry. If this option is nil, SPC scrolls to the end of the current node, and only then goes to the first menu item, like the stand-alone reader does. This change was already in Emacs 21.1, but wasn't advertised in the NEWS. * Lisp Changes in Emacs 21.2 ** The meanings of scroll-up-aggressively and scroll-down-aggressively have been interchanged, so that the former now controls scrolling up, and the latter now controls scrolling down. ** The variable compilation-parse-errors-filename-function' can be used to transform filenames found in compilation output. * Installation Changes in Emacs 21.1 See the INSTALL file for information on installing extra libraries and fonts to take advantage of the new graphical features and extra charsets in this release. ** Support for GNU/Linux on IA64 machines has been added. ** Support for LynxOS has been added. ** There are new configure options associated with the support for images and toolkit scrollbars. Use the --help option in configure' to list them. ** You can build a 64-bit Emacs for SPARC/Solaris systems which support 64-bit executables and also on Irix 6.5. This increases the maximum buffer size. See etc/MACHINES for instructions. Changes to build on other 64-bit systems should be straightforward modulo any necessary changes to unexec. ** There is a new configure option --disable-largefile' to omit Unix-98-style support for large files if that is available. ** There is a new configure option --without-xim' that instructs Emacs to not use X Input Methods (XIM), if these are available. ** movemail' defaults to supporting POP. You can turn this off using the --without-pop configure option, should that be necessary. ** This version can be built for the Macintosh, but does not implement all of the new display features described below. The port currently lacks unexec, asynchronous processes, and networking support. See the "Emacs and the Mac OS" appendix in the Emacs manual, for the description of aspects specific to the Mac. ** Note that the MS-Windows port does not yet implement various of the new display features described below. * Changes in Emacs 21.1 ** Emacs has a new redisplay engine. The new redisplay handles characters of variable width and height. Italic text can be used without redisplay problems. Fonts containing oversized characters, i.e. characters larger than the logical height of a font can be used. Images of various formats can be displayed in the text. ** Emacs has a new face implementation. The new faces no longer fundamentally use X font names to specify the font. Instead, each face has several independent attributes--family, height, width, weight and slant--that it may or may not specify. These attributes can be merged from various faces, and then together specify a font. Faces are supported on terminals that can display color or fonts. These terminal capabilities are auto-detected. Details can be found under Lisp changes, below. ** Emacs can display faces on TTY frames. Emacs automatically detects terminals that are able to display colors. Faces with a weight greater than normal are displayed extra-bright, if the terminal supports it. Faces with a weight less than normal and italic faces are displayed dimmed, if the terminal supports it. Underlined faces are displayed underlined if possible. Other face attributes such as overline', strike-through', and box' are ignored on terminals. The command-line options -fg COLOR', -bg COLOR', and -rv' are now supported on character terminals. Emacs automatically remaps all X-style color specifications to one of the colors supported by the terminal. This means you could have the same color customizations that work both on a windowed display and on a TTY or when Emacs is invoked with the -nw option. ** New default font is Courier 12pt under X. ** Sound support Emacs supports playing sound files on GNU/Linux and FreeBSD (Voxware driver and native BSD driver, a.k.a. Luigi's driver). Currently supported file formats are RIFF-WAVE (*.wav) and Sun Audio (*.au). You must configure Emacs with the option --with-sound=yes' to enable sound support. ** Emacs now resizes mini-windows if appropriate. If a message is longer than one line, or minibuffer contents are longer than one line, Emacs can resize the minibuffer window unless it is on a frame of its own. You can control resizing and the maximum minibuffer window size by setting the following variables: - User option: max-mini-window-height Maximum height for resizing mini-windows. If a float, it specifies a fraction of the mini-window frame's height. If an integer, it specifies a number of lines. Default is 0.25. - User option: resize-mini-windows How to resize mini-windows. If nil, don't resize. If t, always resize to fit the size of the text. If grow-only', let mini-windows grow only, until they become empty, at which point they are shrunk again. Default is grow-only'. ** LessTif support. Emacs now runs with the LessTif toolkit (see ). You will need version 0.92.26, or later. ** LessTif/Motif file selection dialog. When Emacs is configured to use LessTif or Motif, reading a file name from a menu will pop up a file selection dialog if use-dialog-box' is non-nil. ** File selection dialog on MS-Windows is supported. When a file is visited by clicking File->Open, the MS-Windows version now pops up a standard file selection dialog where you can select a file to visit. File->Save As also pops up that dialog. ** Toolkit scroll bars. Emacs now uses toolkit scroll bars if available. When configured for LessTif/Motif, it will use that toolkit's scroll bar. Otherwise, when configured for Lucid and Athena widgets, it will use the Xaw3d scroll bar if Xaw3d is available. You can turn off the use of toolkit scroll bars by specifying --with-toolkit-scroll-bars=no' when configuring Emacs. When you encounter problems with the Xaw3d scroll bar, watch out how Xaw3d is compiled on your system. If the Makefile generated from Xaw3d's Imakefile contains a -DNARROWPROTO' compiler option, and your Emacs system configuration file s/your-system.h' does not contain a define for NARROWPROTO, you might consider adding it. Take s/freebsd.h' as an example. Alternatively, if you don't have access to the Xaw3d source code, take a look at your system's imake configuration file, for example in the directory /usr/X11R6/lib/X11/config' (paths are different on different systems). You will find files *.cf' there. If your system's cf-file contains a line like #define NeedWidePrototypes NO', add a #define NARROWPROTO' to your Emacs system configuration file. The reason for this is that one Xaw3d function uses double' or float' function parameters depending on the setting of NARROWPROTO. This is not a problem when Imakefiles are used because each system's imake configuration file contains the necessary information. Since Emacs doesn't use imake, this has do be done manually. ** Tool bar support. Emacs supports a tool bar at the top of a frame under X. For details of how to define a tool bar, see the page describing Lisp-level changes. Tool-bar global minor mode controls whether or not it is displayed and is on by default. The appearance of the bar is improved if Emacs has been built with XPM image support. Otherwise monochrome icons will be used. To make the tool bar more useful, we need contributions of extra icons for specific modes (with copyright assignments). ** Tooltips. Tooltips are small X windows displaying a help string at the current mouse position. The Lisp package tooltip' implements them. You can turn them off via the user option tooltip-mode'. Tooltips also provides support for GUD debugging. If activated, variable values can be displayed in tooltips by pointing at them with the mouse in source buffers. You can customize various aspects of the tooltip display in the group tooltip'. ** Automatic Hscrolling Horizontal scrolling now happens automatically if automatic-hscrolling' is set (the default). This setting can be customized. If a window is scrolled horizontally with set-window-hscroll, or scroll-left/scroll-right (C-x <, C-x >), this serves as a lower bound for automatic horizontal scrolling. Automatic scrolling will scroll the text more to the left if necessary, but won't scroll the text more to the right than the column set with set-window-hscroll etc. ** When using a windowing terminal, each Emacs window now has a cursor of its own. By default, when a window is selected, the cursor is solid; otherwise, it is hollow. The user-option cursor-in-non-selected-windows' controls how to display the cursor in non-selected windows. If nil, no cursor is shown, if non-nil a hollow box cursor is shown. ** Fringes to the left and right of windows are used to display truncation marks, continuation marks, overlay arrows and alike. The foreground, background, and stipple of these areas can be changed by customizing face fringe'. ** The mode line under X is now drawn with shadows by default. You can change its appearance by modifying the face mode-line'. In particular, setting the :box' attribute to nil turns off the 3D appearance of the mode line. (The 3D appearance makes the mode line occupy more space, and thus might cause the first or the last line of the window to be partially obscured.) The variable mode-line-inverse-video', which was used in older versions of emacs to make the mode-line stand out, is now deprecated. However, setting it to nil will cause the mode-line' face to be ignored, and mode-lines to be drawn using the default text face. ** Mouse-sensitive mode line. Different parts of the mode line have been made mouse-sensitive on all systems which support the mouse. Moving the mouse to a mouse-sensitive part in the mode line changes the appearance of the mouse pointer to an arrow, and help about available mouse actions is displayed either in the echo area, or in the tooltip window if you have enabled one. Currently, the following actions have been defined: - Mouse-1 on the buffer name in the mode line goes to the next buffer. - Mouse-3 on the buffer-name goes to the previous buffer. - Mouse-2 on the read-only or modified status in the mode line (%' or *') toggles the status. - Mouse-3 on the major mode name displays a major mode menu. - Mouse-3 on the mode name displays a minor-mode menu. ** Hourglass pointer Emacs can optionally display an hourglass pointer under X. You can turn the display on or off by customizing group cursor'. ** Blinking cursor M-x blink-cursor-mode toggles a blinking cursor under X and on terminals having terminal capabilities vi', vs', and ve'. Blinking and related parameters like frequency and delay can be customized in the group cursor'. ** New font-lock support mode jit-lock-mode'. This support mode is roughly equivalent to lazy-lock' but is generally faster. It supports stealth and deferred fontification. See the documentation of the function jit-lock-mode' for more details. Font-lock uses jit-lock-mode as default support mode, so you don't have to do anything to activate it. ** The default binding of the Delete key has changed. The new user-option normal-erase-is-backspace' can be set to determine the effect of the Delete and Backspace function keys. On window systems, the default value of this option is chosen according to the keyboard used. If the keyboard has both a Backspace key and a Delete key, and both are mapped to their usual meanings, the option's default value is set to t, so that Backspace can be used to delete backward, and Delete can be used to delete forward. On keyboards which either have only one key (usually labeled DEL), or two keys DEL and BS which produce the same effect, the option's value is set to nil, and these keys delete backward. If not running under a window system, setting this option accomplishes a similar effect by mapping C-h, which is usually generated by the Backspace key, to DEL, and by mapping DEL to C-d via keyboard-translate'. The former functionality of C-h is available on the F1 key. You should probably not use this setting on a text-only terminal if you don't have both Backspace, Delete and F1 keys. Programmatically, you can call function normal-erase-is-backspace-mode to toggle the behavior of the Delete and Backspace keys. ** The default for user-option next-line-add-newlines' has been changed to nil, i.e. C-n will no longer add newlines at the end of a buffer by default. ** The and keys now move to the beginning or end of the current line, respectively. C- and C- move to the beginning and end of the buffer. ** Emacs now checks for recursive loads of Lisp files. If the recursion depth exceeds recursive-load-depth-limit', an error is signaled. ** When an error is signaled during the loading of the user's init file, Emacs now pops up the *Messages* buffer. ** Emacs now refuses to load compiled Lisp files which weren't compiled with Emacs. Set load-dangerous-libraries' to t to change this behavior. The reason for this change is an incompatible change in XEmacs's byte compiler. Files compiled with XEmacs can contain byte codes that let Emacs dump core. ** Toggle buttons and radio buttons in menus. When compiled with LessTif (or Motif) support, Emacs uses toolkit widgets for radio and toggle buttons in menus. When configured for Lucid, Emacs draws radio buttons and toggle buttons similar to Motif. ** The menu bar configuration has changed. The new configuration is more CUA-compliant. The most significant change is that Options is now a separate menu-bar item, with Mule and Customize as its submenus. ** Item Save Options on the Options menu allows saving options set using that menu. ** Highlighting of trailing whitespace. When show-trailing-whitespace' is non-nil, Emacs displays trailing whitespace in the face trailing-whitespace'. Trailing whitespace is defined as spaces or tabs at the end of a line. To avoid busy highlighting when entering new text, trailing whitespace is not displayed if point is at the end of the line containing the whitespace. ** C-x 5 1 runs the new command delete-other-frames which deletes all frames except the selected one. ** The new user-option confirm-kill-emacs' can be customized to let Emacs ask for confirmation before exiting. ** The header line in an Info buffer is now displayed as an emacs header-line (which is like a mode-line, but at the top of the window), so that it remains visible even when the buffer has been scrolled. This behavior may be disabled by customizing the option Info-use-header-line'. ** Polish, Czech, German, and French translations of Emacs' reference card have been added. They are named pl-refcard.tex', cs-refcard.tex', de-refcard.tex' and fr-refcard.tex'. Postscript files are included. ** An Emacs Survival Guide', etc/survival.tex, is available. ** A reference card for Dired has been added. Its name is dired-ref.tex'. A French translation is available in fr-drdref.tex'. ** C-down-mouse-3 is bound differently. Now if the menu bar is not displayed it pops up a menu containing the items which would be on the menu bar. If the menu bar is displayed, it pops up the major mode menu or the Edit menu if there is no major mode menu. ** Variable load-path' is no longer customizable through Customize. You can no longer use M-x customize-variable' to customize load-path' because it now contains a version-dependent component. You can still use add-to-list' and setq' to customize this variable in your ~/.emacs' init file or to modify it from any Lisp program in general. ** C-u C-x = provides detailed information about the character at point in a pop-up window. ** Emacs can now support 'wheeled' mice (such as the MS IntelliMouse) under XFree86. To enable this, use the mouse-wheel-mode' command, or customize the variable mouse-wheel-mode'. The variables mouse-wheel-follow-mouse' and mouse-wheel-scroll-amount' determine where and by how much buffers are scrolled. ** Emacs' auto-save list files are now by default stored in a sub-directory .emacs.d/auto-save-list/' of the user's home directory. (On MS-DOS, this subdirectory's name is _emacs.d/auto-save.list/'.) You can customize auto-save-list-file-prefix' to change this location. ** The function getenv' is now callable interactively. ** The new user-option even-window-heights' can be set to nil to prevent display-buffer' from evening out window heights. ** The new command M-x delete-trailing-whitespace RET will delete the trailing whitespace within the current restriction. You can also add this function to write-file-hooks' or local-write-file-hooks'. ** When visiting a file with M-x find-file-literally, no newlines will be added to the end of the buffer even if require-final-newline' is non-nil. ** The new user-option find-file-suppress-same-file-warnings' can be set to suppress warnings X and Y are the same file'' when visiting a file that is already visited under a different name. ** The new user-option electric-help-shrink-window' can be set to nil to prevent adjusting the help window size to the buffer size. ** New command M-x describe-character-set reads a character set name and displays information about that. ** The new variable auto-mode-interpreter-regexp' contains a regular expression matching interpreters, for file mode determination. This regular expression is matched against the first line of a file to determine the file's mode in set-auto-mode' when Emacs can't deduce a mode from the file's name. If it matches, the file is assumed to be interpreted by the interpreter matched by the second group of the regular expression. The mode is then determined as the mode associated with that interpreter in interpreter-mode-alist'. ** New function executable-make-buffer-file-executable-if-script-p is suitable as an after-save-hook as an alternative to executable-chmod'. ** The most preferred coding-system is now used to save a buffer if buffer-file-coding-system is undecided' and it is safe for the buffer contents. (The most preferred is set by set-language-environment or by M-x prefer-coding-system.) Thus if you visit an ASCII file and insert a non-ASCII character from your current language environment, the file will be saved silently with the appropriate coding. Previously you would be prompted for a safe coding system. ** The many obsolete language setup-...-environment' commands have been removed -- use set-language-environment'. ** The new Custom option keyboard-coding-system' specifies a coding system for keyboard input. ** New variable inhibit-iso-escape-detection' determines if Emacs' coding system detection algorithm should pay attention to ISO2022's escape sequences. If this variable is non-nil, the algorithm ignores such escape sequences. The default value is nil, and it is recommended not to change it except for the special case that you always want to read any escape code verbatim. If you just want to read a specific file without decoding escape codes, use C-x RET c (universal-coding-system-argument'). For instance, C-x RET c latin-1 RET C-x C-f filename RET. ** Variable default-korean-keyboard' is initialized properly from the environment variable HANGUL_KEYBOARD_TYPE'. ** New command M-x list-charset-chars reads a character set name and displays all characters in that character set. ** M-x set-terminal-coding-system (C-x RET t) now allows CCL-based coding systems such as cpXXX and cyrillic-koi8. ** Emacs now attempts to determine the initial language environment and preferred and locale coding systems systematically from the LC_ALL, LC_CTYPE, and LANG environment variables during startup. ** New language environments Polish', Latin-8' and Latin-9'. Latin-8 and Latin-9 correspond respectively to the ISO character sets 8859-14 (Celtic) and 8859-15 (updated Latin-1, with the Euro sign). GNU Intlfonts doesn't support these yet but recent X releases have 8859-15. See etc/INSTALL for information on obtaining extra fonts. There are new Leim input methods for Latin-8 and Latin-9 prefix (only) and Polish slash'. ** New language environments Dutch' and Spanish'. These new environments mainly select appropriate translations of the tutorial. ** In Ethiopic language environment, special key bindings for function keys are changed as follows. This is to conform to "Emacs Lisp Coding Convention". new command old-binding --- ------- ----------- f3 ethio-fidel-to-sera-buffer f5 S-f3 ethio-fidel-to-sera-region f5 C-f3 ethio-fidel-to-sera-mail-or-marker f5 f4 ethio-sera-to-fidel-buffer unchanged S-f4 ethio-sera-to-fidel-region unchanged C-f4 ethio-sera-to-fidel-mail-or-marker unchanged S-f5 ethio-toggle-punctuation f3 S-f6 ethio-modify-vowel f6 S-f7 ethio-replace-space f7 S-f8 ethio-input-special-character f8 S-f9 ethio-replace-space unchanged C-f9 ethio-toggle-space f2 ** There are new Leim input methods. New input methods "turkish-postfix", "turkish-alt-postfix", "greek-mizuochi", "TeX", and "greek-babel" are now part of the Leim package. ** The rule of input method "slovak" is slightly changed. Now the rules for translating "q" and "Q" to "" (backquote) are deleted, thus typing them inserts "q" and "Q" respectively. Rules for translating "=q", "+q", "=Q", and "+Q" to "" are also deleted. Now, to input "", you must type "=q". ** When your terminal can't display characters from some of the ISO 8859 character sets but can display Latin-1, you can display more-or-less mnemonic sequences of ASCII/Latin-1 characters instead of empty boxes (under a window system) or question marks (not under a window system). Customize the option latin1-display' to turn this on. ** M-; now calls comment-dwim which tries to do something clever based on the context. M-x kill-comment is now an alias to comment-kill, defined in newcomment.el. You can choose different styles of region commenting with the variable comment-style'. ** New user options display-time-mail-face' and display-time-use-mail-icon' control the appearance of mode-line mail indicator used by the display-time package. On a suitable display the indicator can be an icon and is mouse-sensitive. ** On window-systems, additional space can be put between text lines on the display using several methods - By setting frame parameter line-spacing' to PIXELS. PIXELS must be a positive integer, and specifies that PIXELS number of pixels should be put below text lines on the affected frame or frames. - By setting X resource lineSpacing', class LineSpacing'. This is equivalent to specifying the frame parameter. - By specifying --line-spacing=N' or -lsp N' on the command line. - By setting buffer-local variable line-spacing'. The meaning is the same, but applies to the a particular buffer only. ** The new command clone-indirect-buffer' can be used to create an indirect buffer that is a twin copy of the current buffer. The command clone-indirect-buffer-other-window', bound to C-x 4 c, does the same but displays the indirect buffer in another window. ** New user options backup-directory-alist' and make-backup-file-name-function' control the placement of backups, typically in a single directory or in an invisible sub-directory. ** New commands iso-iso2sgml and iso-sgml2iso convert between Latin-1 characters and the corresponding SGML (HTML) entities. ** New X resources recognized *** The X resource synchronous', class Synchronous', specifies whether Emacs should run in synchronous mode. Synchronous mode is useful for debugging X problems. Example: emacs.synchronous: true *** The X resource visualClass, class VisualClass', specifies the visual Emacs should use. The resource's value should be a string of the form CLASS-DEPTH', where CLASS is the name of the visual class, and DEPTH is the requested color depth as a decimal number. Valid visual class names are TrueColor PseudoColor DirectColor StaticColor GrayScale StaticGray Visual class names specified as X resource are case-insensitive, i.e. pseudocolor', Pseudocolor' and PseudoColor' all have the same meaning. The program xdpyinfo' can be used to list the visual classes supported on your display, and which depths they have. If visualClass' is not specified, Emacs uses the display's default visual. Example: emacs.visualClass: TrueColor-8 *** The X resource privateColormap', class PrivateColormap', specifies that Emacs should use a private colormap if it is using the default visual, and that visual is of class PseudoColor. Recognized resource values are true' or on'. Example: emacs.privateColormap: true ** Faces and frame parameters. There are four new faces scroll-bar', border', cursor' and mouse'. Setting the frame parameters scroll-bar-foreground' and scroll-bar-background' sets foreground and background color of face scroll-bar' and vice versa. Setting frame parameter border-color' sets the background color of face border' and vice versa. Likewise for frame parameters cursor-color' and face cursor', and frame parameter mouse-color' and face mouse'. Changing frame parameter font' sets font-related attributes of the default' face and vice versa. Setting frame parameters foreground-color' or background-color' sets the colors of the default' face and vice versa. ** New face menu'. The face menu' can be used to change colors and font of Emacs' menus. ** New frame parameter screen-gamma' for gamma correction. The new frame parameter screen-gamma' specifies gamma-correction for colors. Its value may be nil, the default, in which case no gamma correction occurs, or a number > 0, usually a float, that specifies the screen gamma of a frame's display. PC monitors usually have a screen gamma of 2.2. smaller values result in darker colors. You might want to try a screen gamma of 1.5 for LCD color displays. The viewing gamma Emacs uses is 0.4545. (1/2.2). The X resource name of this parameter is screenGamma', class ScreenGamma'. ** Tabs and variable-width text. Tabs are now displayed with stretch properties; the width of a tab is defined as a multiple of the normal character width of a frame, and is independent of the fonts used in the text where the tab appears. Thus, tabs can be used to line up text in different fonts. ** Enhancements of the Lucid menu bar *** The Lucid menu bar now supports the resource "margin". emacs.pane.menubar.margin: 5 The default margin is 4 which makes the menu bar appear like the LessTif/Motif one. *** Arrows that indicate sub-menus are now drawn with shadows, as in LessTif and Motif. ** A block cursor can be drawn as wide as the glyph under it under X. As an example: if a block cursor is over a tab character, it will be drawn as wide as that tab on the display. To do this, set x-stretch-cursor' to a non-nil value. ** Empty display lines at the end of a buffer may be marked with a bitmap (this is similar to the tilde displayed by vi and Less). This behavior is activated by setting the buffer-local variable indicate-empty-lines' to a non-nil value. The default value of this variable is found in default-indicate-empty-lines'. ** There is a new "aggressive" scrolling method. When scrolling up because point is above the window start, if the value of the buffer-local variable scroll-up-aggressively' is a number, Emacs chooses a new window start so that point ends up that fraction of the window's height from the top of the window. When scrolling down because point is below the window end, if the value of the buffer-local variable scroll-down-aggressively' is a number, Emacs chooses a new window start so that point ends up that fraction of the window's height from the bottom of the window. ** You can now easily create new *Info* buffers using either M-x clone-buffer, C-u m RET or C-u g RET. M-x clone-buffer can also be used on *Help* and several other special buffers. ** The command Info-search' now uses a search history. ** Listing buffers with M-x list-buffers (C-x C-b) now shows abbreviated file names. Abbreviations can be customized by changing directory-abbrev-alist'. ** A new variable, backup-by-copying-when-privileged-mismatch, gives the highest file uid for which backup-by-copying-when-mismatch will be forced on. The assumption is that uids less than or equal to this value are special uids (root, bin, daemon, etc.--not real system users) and that files owned by these users should not change ownership, even if your system policy allows users other than root to edit them. The default is 200; set the variable to nil to disable the feature. ** The rectangle commands now avoid inserting undesirable spaces, notably at the end of lines. All these functions have been rewritten to avoid inserting unwanted spaces, and an optional prefix now allows them to behave the old way. ** The function replace-rectangle' is an alias for string-rectangle'. ** The new command M-x string-insert-rectangle is like string-rectangle', but inserts text instead of replacing it. ** The new command M-x query-replace-regexp-eval acts like query-replace-regexp, but takes a Lisp expression which is evaluated after each match to get the replacement text. ** M-x query-replace recognizes a new command e' (or E') that lets you edit the replacement string. ** The new command mail-abbrev-complete-alias, bound to M-TAB' (if you load the library mailabbrev'), lets you complete mail aliases in the text, analogous to lisp-complete-symbol. ** The variable echo-keystrokes' may now have a floating point value. ** If your init file is compiled (.emacs.elc), user-init-file' is set to the source name (.emacs.el), if that exists, after loading it. ** The help string specified for a menu-item whose definition contains the property :help HELP' is now displayed under X, on MS-Windows, and MS-DOS, either in the echo area or with tooltips. Many standard menus displayed by Emacs now have help strings. -- ** New user option read-mail-command' specifies a command to use to read mail from the menu etc. ** The environment variable EMACSLOCKDIR' is no longer used on MS-Windows. This environment variable was used when creating lock files. Emacs on MS-Windows does not use this variable anymore. This change was made before Emacs 21.1, but wasn't documented until now. ** Highlighting of mouse-sensitive regions is now supported in the MS-DOS version of Emacs. ** The new command msdos-set-mouse-buttons' forces the MS-DOS version of Emacs to behave as if the mouse had a specified number of buttons. This comes handy with mice that don't report their number of buttons correctly. One example is the wheeled mice, which report 3 buttons, but clicks on the middle button are not passed to the MS-DOS version of Emacs. ** Customize changes *** Customize now supports comments about customized items. Use the State' menu to add comments, or give a prefix argument to M-x customize-set-variable or M-x customize-set-value. Note that customization comments will cause the customizations to fail in earlier versions of Emacs. *** The new option custom-buffer-done-function' says whether to kill Custom buffers when you've done with them or just bury them (the default). *** If Emacs was invoked with the -q' or --no-init-file' options, it does not allow you to save customizations in your ~/.emacs' init file. This is because saving customizations from such a session would  Paul Eggert committed Nov 14, 2011 853 wipe out all the other customizations you might have on your init  Kim F. 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2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 file. ** If Emacs was invoked with the -q' or --no-init-file' options, it does not save disabled and enabled commands for future sessions, to avoid overwriting existing customizations of this kind that are already in your init file. ** New features in evaluation commands *** The commands to evaluate Lisp expressions, such as C-M-x in Lisp modes, C-j in Lisp Interaction mode, and M-:, now bind the variables print-level, print-length, and debug-on-error based on the new customizable variables eval-expression-print-level, eval-expression-print-length, and eval-expression-debug-on-error. The default values for the first two of these variables are 12 and 4 respectively, which means that eval-expression' now prints at most the first 12 members of a list and at most 4 nesting levels deep (if the list is longer or deeper than that, an ellipsis ...' is printed). or on the printed text toggles between an abbreviated printed representation and an unabbreviated one. The default value of eval-expression-debug-on-error is t, so any error during evaluation produces a backtrace. *** The function eval-defun' (C-M-x) now loads Edebug and instruments code when called with a prefix argument. ** CC mode changes. Note: This release contains changes that might not be compatible with current user setups (although it's believed that these incompatibilities will only show in very uncommon circumstances). However, since the impact is uncertain, these changes may be rolled back depending on user feedback. Therefore there's no forward compatibility guarantee wrt the new features introduced in this release. *** The hardcoded switch to "java" style in Java mode is gone. CC Mode used to automatically set the style to "java" when Java mode is entered. This has now been removed since it caused too much confusion. However, to keep backward compatibility to a certain extent, the default value for c-default-style now specifies the "java" style for java-mode, but "gnu" for all other modes (as before). So you won't notice the change if you haven't touched that variable. *** New cleanups, space-before-funcall and compact-empty-funcall. Two new cleanups have been added to c-cleanup-list: space-before-funcall causes a space to be inserted before the opening parenthesis of a function call, which gives the style "foo (bar)". compact-empty-funcall causes any space before a function call opening parenthesis to be removed if there are no arguments to the function. It's typically useful together with space-before-funcall to get the style "foo (bar)" and "foo()". *** Some keywords now automatically trigger reindentation. Keywords like "else", "while", "catch" and "finally" have been made "electric" to make them reindent automatically when they continue an earlier statement. An example: for (i = 0; i < 17; i++) if (a[i]) res += a[i]->offset; else Here, the "else" should be indented like the preceding "if", since it continues that statement. CC Mode will automatically reindent it after the "else" has been typed in full, since it's not until then it's possible to decide whether it's a new statement or a continuation of the preceding "if". CC Mode uses Abbrev mode to achieve this, which is therefore turned on by default. *** M-a and M-e now moves by sentence in multiline strings. Previously these two keys only moved by sentence in comments, which meant that sentence movement didn't work in strings containing documentation or other natural language text. The reason it's only activated in multiline strings (i.e. strings that contain a newline, even when escaped by a '\') is to avoid stopping in the short strings that often reside inside statements. Multiline strings almost always contain text in a natural language, as opposed to other strings that typically contain format specifications, commands, etc. Also, it's not that bothersome that M-a and M-e misses sentences in single line strings, since they're short anyway. *** Support for autodoc comments in Pike mode. Autodoc comments for Pike are used to extract documentation from the source, like Javadoc in Java. Pike mode now recognize this markup in comment prefixes and paragraph starts. *** The comment prefix regexps on c-comment-prefix may be mode specific. When c-comment-prefix is an association list, it specifies the comment line prefix on a per-mode basis, like c-default-style does. This change came about to support the special autodoc comment prefix in Pike mode only. *** Better handling of syntactic errors. The recovery after unbalanced parens earlier in the buffer has been improved; CC Mode now reports them by dinging and giving a message stating the offending line, but still recovers and indent the following lines in a sane way (most of the time). An "else" with no matching "if" is handled similarly. If an error is discovered while indenting a region, the whole region is still indented and the error is reported afterwards. *** Lineup functions may now return absolute columns. A lineup function can give an absolute column to indent the line to by returning a vector with the desired column as the first element. *** More robust and warning-free byte compilation. Although this is strictly not a user visible change (well, depending on the view of a user), it's still worth mentioning that CC Mode now can be compiled in the standard ways without causing trouble. Some code have also been moved between the subpackages to enhance the modularity somewhat. Thanks to Martin Buchholz for doing the groundwork. *** c-style-variables-are-local-p now defaults to t. This is an incompatible change that has been made to make the behavior of the style system wrt global variable settings less confusing for non-advanced users. If you know what this variable does you might want to set it to nil in your .emacs, otherwise you probably don't have to bother. Defaulting c-style-variables-are-local-p to t avoids the confusing situation that occurs when a user sets some style variables globally and edits both a Java and a non-Java file in the same Emacs session. If the style variables aren't buffer local in this case, loading of the second file will cause the default style (either "gnu" or "java" by default) to override the global settings made by the user. *** New initialization procedure for the style system. When the initial style for a buffer is determined by CC Mode (from the variable c-default-style), the global values of style variables now take precedence over the values specified by the chosen style. This is different than the old behavior: previously, the style-specific settings would override the global settings. This change makes it possible to do simple configuration in the intuitive way with Customize or with setq lines in one's .emacs file. By default, the global value of every style variable is the new special symbol set-from-style, which causes the value to be taken from the style system. This means that in effect, only an explicit setting of a style variable will cause the "overriding" behavior described above. Also note that global settings override style-specific settings *only* when the initial style of a buffer is chosen by a CC Mode major mode function. When a style is chosen in other ways --- for example, by a call like (c-set-style "gnu") in a hook, or via M-x c-set-style --- then the style-specific values take precedence over any global style values. In Lisp terms, global values override style-specific values only when the new second argument to c-set-style is non-nil; see the function documentation for more info. The purpose of these changes is to make it easier for users, especially novice users, to do simple customizations with Customize or with setq in their .emacs files. On the other hand, the new system is intended to be compatible with advanced users' customizations as well, such as those that choose styles in hooks or whatnot. This new system is believed to be almost entirely compatible with current configurations, in spite of the changed precedence between style and global variable settings when a buffer's default style is set. (Thanks to Eric Eide for clarifying this explanation a bit.) **** c-offsets-alist is now a customizable variable. This became possible as a result of the new initialization behavior. This variable is treated slightly differently from the other style variables; instead of using the symbol set-from-style, it will be completed with the syntactic symbols it doesn't already contain when the style is first initialized. This means it now defaults to the empty list to make all syntactic elements get their values from the style system. **** Compatibility variable to restore the old behavior. In case your configuration doesn't work with this change, you can set c-old-style-variable-behavior to non-nil to get the old behavior back as far as possible. *** Improvements to line breaking and text filling. CC Mode now handles this more intelligently and seamlessly wrt the surrounding code, especially inside comments. For details see the new chapter about this in the manual. **** New variable to recognize comment line prefix decorations. The variable c-comment-prefix-regexp has been added to properly recognize the line prefix in both block and line comments. It's primarily used to initialize the various paragraph recognition and adaptive filling variables that the text handling functions uses. **** New variable c-block-comment-prefix. This is a generalization of the now obsolete variable c-comment-continuation-stars to handle arbitrary strings. **** CC Mode now uses adaptive fill mode. This to make it adapt better to the paragraph style inside comments. It's also possible to use other adaptive filling packages inside CC Mode, notably Kyle E. Jones' Filladapt mode (http://wonderworks.com/). A new convenience function c-setup-filladapt sets up Filladapt for use inside CC Mode. Note though that the 2.12 version of Filladapt lacks a feature that causes it to work suboptimally when c-comment-prefix-regexp can match the empty string (which it commonly does). A patch for that is available from the CC Mode web site (http://www.python.org/emacs/ cc-mode/). **** The variables c-hanging-comment-starter-p' and c-hanging-comment-ender-p', which controlled how comment starters and enders were filled, are not used anymore. The new version of the function c-fill-paragraph' keeps the comment starters and enders as they were before the filling. **** It's now possible to selectively turn off auto filling. The variable c-ignore-auto-fill is used to ignore auto fill mode in specific contexts, e.g. in preprocessor directives and in string literals. **** New context sensitive line break function c-context-line-break. It works like newline-and-indent in normal code, and adapts the line prefix according to the comment style when used inside comments. If you're normally using newline-and-indent, you might want to switch to this function. *** Fixes to IDL mode. It now does a better job in recognizing only the constructs relevant to IDL. E.g. it no longer matches "class" as the beginning of a struct block, but it does match the CORBA 2.3 "valuetype" keyword. Thanks to Eric Eide. *** Improvements to the Whitesmith style. It now keeps the style consistently on all levels and both when opening braces hangs and when they don't. **** New lineup function c-lineup-whitesmith-in-block. *** New lineup functions c-lineup-template-args and c-indent-multi-line-block. See their docstrings for details. c-lineup-template-args does a better job of tracking the brackets used as parens in C++ templates, and is used by default to line up continued template arguments. *** c-lineup-comment now preserves alignment with a comment on the previous line. It used to instead preserve comments that started in the column specified by comment-column. *** c-lineup-C-comments handles "free form" text comments. In comments with a long delimiter line at the start, the indentation is kept unchanged for lines that start with an empty comment line prefix. This is intended for the type of large block comments that contain documentation with its own formatting. In these you normally don't want CC Mode to change the indentation. *** The c' syntactic symbol is now relative to the comment start instead of the previous line, to make integers usable as lineup arguments. *** All lineup functions have gotten docstrings. *** More preprocessor directive movement functions. c-down-conditional does the reverse of c-up-conditional. c-up-conditional-with-else and c-down-conditional-with-else are variants of these that also stops at "#else" lines (suggested by Don Provan). *** Minor improvements to many movement functions in tricky situations. ** Dired changes *** New variable dired-recursive-deletes' determines if the delete command will delete non-empty directories recursively. The default is, delete only empty directories. *** New variable dired-recursive-copies' determines if the copy command will copy directories recursively. The default is, do not copy directories recursively. *** In command dired-do-shell-command' (usually bound to !') a ?' in the shell command has a special meaning similar to *', but with the difference that the command will be run on each file individually. *** The new command dired-find-alternate-file' (usually bound to a') replaces the Dired buffer with the buffer for an alternate file or directory. *** The new command dired-show-file-type' (usually bound to y') shows a message in the echo area describing what type of file the point is on. This command invokes the external program file' do its work, and so will only work on systems with that program, and will be only as accurate or inaccurate as it is. *** Dired now properly handles undo changes of adding/removing -R' from ls switches. *** Dired commands that prompt for a destination file now allow the use of the M-n' command in the minibuffer to insert the source filename, which the user can then edit. This only works if there is a single source file, not when operating on multiple marked files. ** Gnus changes. The Gnus NEWS entries are short, but they reflect sweeping changes in four areas: Article display treatment, MIME treatment, internationalization and mail-fetching. *** The mail-fetching functions have changed. See the manual for the many details. In particular, all procmail fetching variables are gone. If you used procmail like in (setq nnmail-use-procmail t) (setq nnmail-spool-file 'procmail) (setq nnmail-procmail-directory "~/mail/incoming/") (setq nnmail-procmail-suffix "\\.in") this now has changed to (setq mail-sources '((directory :path "~/mail/incoming/" :suffix ".in"))) More information is available in the info doc at Select Methods -> Getting Mail -> Mail Sources *** Gnus is now a MIME-capable reader. This affects many parts of Gnus, and adds a slew of new commands. See the manual for details. Separate MIME packages like RMIME, mime-compose etc., will probably no longer work; remove them and use the native facilities. The FLIM/SEMI package still works with Emacs 21, but if you want to use the native facilities, you must remove any mailcap.el[c] that was installed by FLIM/SEMI version 1.13 or earlier. *** Gnus has also been multilingualized. This also affects too many parts of Gnus to summarize here, and adds many new variables. There are built-in facilities equivalent to those of gnus-mule.el, which is now just a compatibility layer. *** gnus-mule.el is now just a compatibility layer over the built-in Gnus facilities. *** gnus-auto-select-first can now be a function to be called to position point. *** The user can now decide which extra headers should be included in summary buffers and NOV files. *** gnus-article-display-hook' has been removed. Instead, a number of variables starting with gnus-treat-' have been added. *** The Gnus posting styles have been redone again and now work in a subtly different manner. *** New web-based backends have been added: nnslashdot, nnwarchive and nnultimate. nnweb has been revamped, again, to keep up with ever-changing layouts. *** Gnus can now read IMAP mail via nnimap. *** There is image support of various kinds and some sound support. ** Changes in Texinfo mode. *** A couple of new key bindings have been added for inserting Texinfo macros Key binding Macro ------------------------- C-c C-c C-s @strong C-c C-c C-e @emph C-c C-c u @uref C-c C-c q @quotation C-c C-c m @email C-c C-o @ ... @end M-RET @item *** The " key now inserts either " or  or '' depending on context. ** Changes in Outline mode. There is now support for Imenu to index headings. A new command outline-headers-as-kill' copies the visible headings in the region to the kill ring, e.g. to produce a table of contents. ** Changes to Emacs Server *** The new option server-kill-new-buffers' specifies what to do with buffers when done with them. If non-nil, the default, buffers are killed, unless they were already present before visiting them with Emacs Server. If nil, server-temp-file-regexp' specifies which buffers to kill, as before. Please note that only buffers are killed that still have a client, i.e. buffers visited with emacsclient --no-wait' are never killed in this way. ** Both emacsclient and Emacs itself now accept command line options of the form +LINE:COLUMN in addition to +LINE. ** Changes to Show Paren mode. *** Overlays used by Show Paren mode now use a priority property. The new user option show-paren-priority specifies the priority to use. Default is 1000. ** New command M-x check-parens can be used to find unbalanced paren groups and strings in buffers in Lisp mode (or other modes). ** Changes to hideshow.el *** Generalized block selection and traversal A block is now recognized by its start and end regexps (both strings), and an integer specifying which sub-expression in the start regexp serves as the place where a forward-sexp'-like function can operate. See the documentation of variable hs-special-modes-alist'. *** During incremental search, if Hideshow minor mode is active, hidden blocks are temporarily shown. The variable hs-headline' can be used in the mode line format to show the line at the beginning of the open block. *** User option hs-hide-all-non-comment-function' specifies a function to be called at each top-level block beginning, instead of the normal block-hiding function. *** The command hs-show-region' has been removed. *** The key bindings have changed to fit the Emacs conventions, roughly imitating those of Outline minor mode. Notably, the prefix for all bindings is now C-c @'. For details, see the documentation for hs-minor-mode'. *** The variable hs-show-hidden-short-form' has been removed, and hideshow.el now always behaves as if this variable were set to t. ** Changes to Change Log mode and Add-Log functions *** If you invoke add-change-log-entry' from a backup file, it makes an entry appropriate for the file's parent. This is useful for making log entries by comparing a version with deleted functions. **** New command M-x change-log-merge merges another log into the current buffer. *** New command M-x change-log-redate fixes any old-style date entries in a log file. *** Change Log mode now adds a file's version number to change log entries if user-option change-log-version-info-enabled' is non-nil. Unless the file is under version control the search for a file's version number is performed based on regular expressions from change-log-version-number-regexp-list' which can be customized. Version numbers are only found in the first 10 percent of a file. *** Change Log mode now defines its own faces for font-lock highlighting. ** Changes to cmuscheme *** The user-option scheme-program-name' has been renamed cmuscheme-program-name' due to conflicts with xscheme.el. ** Changes in Font Lock *** The new function font-lock-remove-keywords' can be used to remove font-lock keywords from the current buffer or from a specific major mode. *** Multi-line patterns are now supported. Modes using this, should set font-lock-multiline to t in their font-lock-defaults. *** font-lock-syntactic-face-function' allows major-modes to choose the face used for each string/comment. *** A new standard face font-lock-doc-face'. Meant for Lisp docstrings, Javadoc comments and other "documentation in code". ** Changes to Shell mode *** The shell' command now accepts an optional argument to specify the buffer to use, which defaults to "*shell*". When used interactively, a non-default buffer may be specified by giving the shell' command a prefix argument (causing it to prompt for the buffer name). ** Comint (subshell) changes These changes generally affect all modes derived from comint mode, which include shell-mode, gdb-mode, scheme-interaction-mode, etc. *** Comint now by default interprets some carriage-control characters. Comint now removes CRs from CR LF sequences, and treats single CRs and BSs in the output in a way similar to a terminal (by deleting to the beginning of the line, or deleting the previous character, respectively). This is achieved by adding comint-carriage-motion' to the comint-output-filter-functions' hook by default. *** By default, comint no longer uses the variable comint-prompt-regexp' to distinguish prompts from user-input. Instead, it notices which parts of the text were output by the process, and which entered by the user, and attaches field' properties to allow emacs commands to use this information. Common movement commands, notably beginning-of-line, respect field boundaries in a fairly natural manner. To disable this feature, and use the old behavior, customize the user option comint-use-prompt-regexp-instead-of-fields'. *** Comint now includes new features to send commands to running processes and redirect the output to a designated buffer or buffers. *** The command M-x comint-redirect-send-command reads a command and buffer name from the mini-buffer. The command is sent to the current buffer's process, and its output is inserted into the specified buffer. The command M-x comint-redirect-send-command-to-process acts like M-x comint-redirect-send-command but additionally reads the name of the buffer whose process should be used from the mini-buffer. *** Packages based on comint now highlight user input and program prompts, and support choosing previous input with mouse-2. To control these features, see the user-options comint-highlight-input' and comint-highlight-prompt'. *** The new command comint-write-output' (usually bound to C-c C-s') saves the output from the most recent command to a file. With a prefix argument, it appends to the file. *** The command comint-kill-output' has been renamed comint-delete-output' (usually bound to C-c C-o'); the old name is aliased to it for compatibility. *** The new function comint-add-to-input-history' adds commands to the input ring (history). *** The new variable comint-input-history-ignore' is a regexp for identifying history lines that should be ignored, like tcsh time-stamp strings, starting with a #'. The default value of this variable is "^#". ** Changes to Rmail mode *** The new user-option rmail-user-mail-address-regexp can be set to fine tune the identification of the correspondent when receiving new mail. If it matches the address of the sender, the recipient is taken as correspondent of a mail. If nil, the default, user-login-name' and user-mail-address' are used to exclude yourself as correspondent. Usually you don't have to set this variable, except if you collect mails sent by you under different user names. Then it should be a regexp matching your mail addresses. *** The new user-option rmail-confirm-expunge controls whether and how to ask for confirmation before expunging deleted messages from an Rmail file. You can choose between no confirmation, confirmation with y-or-n-p, or confirmation with yes-or-no-p. Default is to ask for confirmation with yes-or-no-p. *** RET is now bound in the Rmail summary to rmail-summary-goto-msg, like j'. *** There is a new user option rmail-digest-end-regexps' that specifies the regular expressions to detect the line that ends a digest message. *** The new user option rmail-automatic-folder-directives' specifies in which folder to put messages automatically. *** The new function rmail-redecode-body' allows to fix a message with non-ASCII characters if Emacs happens to decode it incorrectly due to missing or malformed "charset=" header. ** The new user-option mail-envelope-from' can be used to specify an envelope-from address different from user-mail-address. ** The variable mail-specify-envelope-from controls whether to use the -f option when sending mail. ** The Rmail command o' (rmail-output-to-rmail-file') now writes the current message in the internal emacs-mule' encoding, rather than in the encoding taken from the variable buffer-file-coding-system'. This allows to save messages whose characters cannot be safely encoded by the buffer's coding system, and makes sure the message will be displayed correctly when you later visit the target Rmail file. If you want your Rmail files be encoded in a specific coding system other than emacs-mule', you can customize the variable rmail-file-coding-system' to set its value to that coding system. ** Changes to TeX mode *** The default mode has been changed from plain-tex-mode' to latex-mode'. *** latex-mode now has a simple indentation algorithm. *** M-f and M-p jump around \begin...\end pairs. *** Added support for outline-minor-mode. ** Changes to RefTeX mode *** RefTeX has new support for index generation. Index entries can be created with C-c <', with completion available on index keys. Pressing C-c /' indexes the word at the cursor with a default macro. C-c >' compiles all index entries into an alphabetically sorted *Index* buffer which looks like the final index. Entries can be edited from that buffer. *** Label and citation key selection now allow to select several items and reference them together (use m' to mark items, a' or A' to use all marked entries). *** reftex.el has been split into a number of smaller files to reduce memory use when only a part of RefTeX is being used. *** a new command reftex-view-crossref-from-bibtex' (bound to C-c &' in BibTeX-mode) can be called in a BibTeX database buffer in order to show locations in LaTeX documents where a particular entry has been cited. ** Emacs Lisp mode now allows multiple levels of outline headings. The level of a heading is determined from the number of leading semicolons in a heading line. Toplevel forms starting with a (' in column 1 are always made leaves. ** The M-x time-stamp command (most commonly used on write-file-hooks) has the following new features: *** The patterns for finding the time stamp and for updating a pattern may match text spanning multiple lines. For example, some people like to have the filename and date on separate lines. The new variable time-stamp-inserts-lines controls the matching for multi-line patterns. *** More than one time stamp can be updated in the same file. This feature is useful if you need separate time stamps in a program source file to both include in formatted documentation and insert in the compiled binary. The same time-stamp will be written at each matching pattern. The variable time-stamp-count enables this new feature; it defaults to 1. ** Partial Completion mode now completes environment variables in file names. ** Ispell changes *** The command ispell' now spell-checks a region if transient-mark-mode is on, and the mark is active. Otherwise it spell-checks the current buffer. *** Support for synchronous subprocesses - DOS/Windoze - has been added. *** An "alignment error" bug was fixed when a manual spelling correction is made and re-checked. *** Italian, Portuguese, and Slovak dictionary definitions have been added. *** Region skipping performance has been vastly improved in some cases. *** Spell checking HTML buffers has been improved and isn't so strict on syntax errors. *** The buffer-local words are now always placed on a new line at the end of the buffer. *** Spell checking now works in the MS-DOS version of Emacs. *** The variable ispell-format-word' has been renamed to ispell-format-word-function'. The old name is still available as alias. ** Makefile mode changes *** The mode now uses the abbrev table makefile-mode-abbrev-table'. *** Conditionals and include statements are now highlighted when Fontlock mode is active. ** Isearch changes *** Isearch now puts a call to isearch-resume' in the command history, so that searches can be resumed. *** In Isearch mode, C-M-s and C-M-r are now bound like C-s and C-r, respectively, i.e. you can repeat a regexp isearch with the same keys that started the search. *** In Isearch mode, mouse-2 in the echo area now yanks the current selection into the search string rather than giving an error. *** There is a new lazy highlighting feature in incremental search. Lazy highlighting is switched on/off by customizing variable isearch-lazy-highlight'. When active, all matches for the current search string are highlighted. The current match is highlighted as before using face isearch' or region'. All other matches are highlighted using face isearch-lazy-highlight-face' which defaults to secondary-selection'. The extra highlighting makes it easier to anticipate where the cursor will end up each time you press C-s or C-r to repeat a pending search. Highlighting of these additional matches happens in a deferred fashion using "idle timers," so the cycles needed do not rob isearch of its usual snappy response. If isearch-lazy-highlight-cleanup' is set to t, highlights for matches are automatically cleared when you end the search. If it is set to nil, you can remove the highlights manually with M-x isearch-lazy-highlight-cleanup'. ** VC Changes VC has been overhauled internally. It is now modular, making it easier to plug-in arbitrary version control backends. (See Lisp Changes for details on the new structure.) As a result, the mechanism to enable and disable support for particular version systems has changed: everything is now controlled by the new variable vc-handled-backends'. Its value is a list of symbols that identify version systems; the default is '(RCS CVS SCCS). When finding a file, each of the backends in that list is tried in order to see whether the file is registered in that backend. When registering a new file, VC first tries each of the listed backends to see if any of them considers itself "responsible" for the directory of the file (e.g. because a corresponding subdirectory for master files exists). If none of the backends is responsible, then the first backend in the list that could register the file is chosen. As a consequence, the variable vc-default-back-end' is now obsolete. The old variable vc-master-templates' is also obsolete, although VC still supports it for backward compatibility. To define templates for RCS or SCCS, you should rather use the new variables vc-{rcs,sccs}-master-templates. (There is no such feature under CVS where it doesn't make sense.) The variables vc-ignore-vc-files' and vc-handle-cvs' are also obsolete now, you must set vc-handled-backends' to nil or exclude CVS' from the list, respectively, to achieve their effect now. *** General Changes The variable vc-checkout-carefully' is obsolete: the corresponding checks are always done now. VC Dired buffers are now kept up-to-date during all version control operations. vc-diff' output is now displayed in diff-mode'. vc-print-log' uses log-view-mode'. vc-log-mode' (used for *VC-Log*) has been replaced by log-edit-mode'. The command C-x v m (vc-merge) now accepts an empty argument as the first revision number. This means that any recent changes on the current branch should be picked up from the repository and merged into the working file (merge news''). The commands C-x v s (vc-create-snapshot) and C-x v r (vc-retrieve-snapshot) now ask for a directory name from which to work downwards. *** Multiple Backends VC now lets you register files in more than one backend. This is useful, for example, if you are working with a slow remote CVS repository. You can then use RCS for local editing, and occasionally commit your changes back to CVS, or pick up changes from CVS into your local RCS archives. To make this work, the more local'' backend (RCS in our example) should come first in vc-handled-backends', and the more remote'' backend (CVS) should come later. (The default value of vc-handled-backends' already has it that way.) You can then commit changes to another backend (say, RCS), by typing C-u C-x v v RCS RET (i.e. vc-next-action now accepts a backend name as a revision number). VC registers the file in the more local backend if that hasn't already happened, and commits to a branch based on the current revision number from the more remote backend. If a file is registered in multiple backends, you can switch to another one using C-x v b (vc-switch-backend). This does not change any files, it only changes VC's perspective on the file. Use this to pick up changes from CVS while working under RCS locally. After you are done with your local RCS editing, you can commit your changes back to CVS using C-u C-x v v CVS RET. In this case, the local RCS archive is removed after the commit, and the log entry buffer is initialized to contain the entire RCS change log of the file. *** Changes for CVS There is a new user option, vc-cvs-stay-local'. If it is t' (the default), then VC avoids network queries for files registered in remote repositories. The state of such files is then only determined by heuristics and past information. vc-cvs-stay-local' can also be a regexp to match against repository hostnames; only files from hosts that match it are treated locally. If the variable is nil, then VC queries the repository just as often as it does for local files. If vc-cvs-stay-local' is on, then VC also makes local backups of repository versions. This means that ordinary diffs (C-x v =) and revert operations (C-x v u) can be done completely locally, without any repository interactions at all. The name of a local version backup of FILE is FILE.~REV.~, where REV is the repository version number. This format is similar to that used by C-x v ~ (vc-version-other-window), except for the trailing dot. As a matter of fact, the two features can each use the files created by the other, the only difference being that files with a trailing .' are deleted automatically after commit. (This feature doesn't work on MS-DOS, since DOS disallows more than a single dot in the trunk of a file name.) If vc-cvs-stay-local' is on, and there have been changes in the repository, VC notifies you about it when you actually try to commit. If you want to check for updates from the repository without trying to commit, you can either use C-x v m RET to perform an update on the current file, or you can use C-x v r RET to get an update for an entire directory tree. The new user option vc-cvs-use-edit' indicates whether VC should call "cvs edit" to make files writeable; it defaults to t'. (This option is only meaningful if the CVSREAD variable is set, or if files are "watched" by other developers.) The commands C-x v s (vc-create-snapshot) and C-x v r (vc-retrieve-snapshot) are now also implemented for CVS. If you give an empty snapshot name to the latter, that performs a cvs update', starting at the given directory. *** Lisp Changes in VC VC has been restructured internally to make it modular. You can now add support for arbitrary version control backends by writing a library that provides a certain set of backend-specific functions, and then telling VC to use that library. For example, to add support for a version system named SYS, you write a library named vc-sys.el, which provides a number of functions vc-sys-... (see commentary at the top of vc.el for a detailed list of them). To make VC use that library, you need to put it somewhere into Emacs' load path and add the symbol SYS' to the list vc-handled-backends'. ** The customizable EDT emulation package now supports the EDT SUBS command and EDT scroll margins. It also works with more terminal/keyboard configurations and it now works under XEmacs. See etc/edt-user.doc for more information. ** New modes and packages *** The new global minor mode minibuffer-electric-default-mode' automatically hides the (default ...)' part of minibuffer prompts when the default is not applicable. *** Artist is an Emacs lisp package that allows you to draw lines, rectangles and ellipses by using your mouse and/or keyboard. The shapes are made up with the ascii characters |, -, / and \. Features are: - Intersecting: When a |' intersects with a -', a +' is drawn, like this: | \ / --+-- X | / \ - Rubber-banding: When drawing lines you can interactively see the result while holding the mouse button down and moving the mouse. If your machine is not fast enough (a 386 is a bit too slow, but a pentium is well enough), you can turn this feature off. You will then see 1's and 2's which mark the 1st and 2nd endpoint of the line you are drawing. - Arrows: After having drawn a (straight) line or a (straight) poly-line, you can set arrows on the line-ends by typing < or >. - Flood-filling: You can fill any area with a certain character by flood-filling. - Cut copy and paste: You can cut, copy and paste rectangular regions. Artist also interfaces with the rect package (this can be turned off if it causes you any trouble) so anything you cut in artist can be yanked with C-x r y and vice versa. - Drawing with keys: Everything you can do with the mouse, you can also do without the mouse. - Aspect-ratio: You can set the variable artist-aspect-ratio to reflect the height-width ratio for the font you are using. Squares and circles are then drawn square/round. Note, that once your ascii-file is shown with font with a different height-width ratio, the squares won't be square and the circles won't be round. - Drawing operations: The following drawing operations are implemented: lines straight-lines rectangles squares poly-lines straight poly-lines ellipses circles text (see-thru) text (overwrite) spray-can setting size for spraying vaporize line vaporize lines erase characters erase rectangles Straight lines are lines that go horizontally, vertically or diagonally. Plain lines go in any direction. The operations in the right column are accessed by holding down the shift key while drawing. It is possible to vaporize (erase) entire lines and connected lines (rectangles for example) as long as the lines being vaporized are straight and connected at their endpoints. Vaporizing is inspired by the drawrect package by Jari Aalto . - Picture mode compatibility: Artist is picture mode compatible (this can be turned off). *** The new package Eshell is an operating system command shell implemented entirely in Emacs Lisp. Use M-x eshell' to invoke it. It functions similarly to bash and zsh, and allows running of Lisp functions and external commands using the same syntax. It supports history lists, aliases, extended globbing, smart scrolling, etc. It will work on any platform Emacs has been ported to. And since most of the basic commands -- ls, rm, mv, cp, ln, du, cat, etc. -- have been rewritten in Lisp, it offers an operating-system independent shell, all within the scope of your Emacs process. *** The new package timeclock.el is a mode is for keeping track of time intervals. You can use it for whatever purpose you like, but the typical scenario is to keep track of how much time you spend working on certain projects. *** The new package hi-lock.el provides commands to highlight matches of interactively entered regexps. For example, M-x highlight-regexp RET clearly RET RET will highlight all occurrences of clearly' using a yellow background face. New occurrences of clearly' will be highlighted as they are typed. M-x unhighlight-regexp RET' will remove the highlighting. Any existing face can be used for highlighting and a set of appropriate faces is provided. The regexps can be written into the current buffer in a form that will be recognized the next time the corresponding file is read. There are commands to highlight matches to phrases and to highlight entire lines containing a match. *** The new package zone.el plays games with Emacs' display when Emacs is idle. *** The new package tildify.el allows to add hard spaces or other text fragments in accordance with the current major mode. *** The new package xml.el provides a simple but generic XML parser. It doesn't parse the DTDs however. *** The comment operations are now provided by the newcomment.el package which allows different styles of comment-region and should be more robust while offering the same functionality. comment-region' now doesn't always comment a-line-at-a-time, but only comments the region, breaking the line at point if necessary. *** The Ebrowse package implements a C++ class browser and tags facilities tailored for use with C++. It is documented in a separate Texinfo file. *** The PCL-CVS package available by either running M-x cvs-examine or by visiting a CVS administrative directory (with a prefix argument) provides an alternative interface to VC-dired for CVS. It comes with log-view-mode' to view RCS and SCCS logs and log-edit-mode' used to enter check-in log messages. *** The new package called woman' allows to browse Unix man pages without invoking external programs. The command M-x woman' formats manual pages entirely in Emacs Lisp and then displays them, like M-x manual-entry' does. Unlike manual-entry', woman' does not invoke any external programs, so it is useful on systems such as MS-DOS/MS-Windows where the man' and Groff or troff' commands are not readily available. The command M-x woman-find-file' asks for the file name of a man page, then formats and displays it like M-x woman' does. *** The new command M-x re-builder offers a convenient interface for authoring regular expressions with immediate visual feedback. The buffer from which the command was called becomes the target for the regexp editor popping up in a separate window. Matching text in the target buffer is immediately color marked during the editing. Each sub-expression of the regexp will show up in a different face so even complex regexps can be edited and verified on target data in a single step. On displays not supporting faces the matches instead blink like matching parens to make them stand out. On such a setup you will probably also want to use the sub-expression mode when the regexp contains such to get feedback about their respective limits. *** glasses-mode is a minor mode that makes unreadableIdentifiersLikeThis readable. It works as glasses, without actually modifying content of a buffer. *** The package ebnf2ps translates an EBNF to a syntactic chart in PostScript. Currently accepts ad-hoc EBNF, ISO EBNF and Bison/Yacc. The ad-hoc default EBNF syntax has the following elements: ; comment (until end of line) A non-terminal "C" terminal ?C? special $A default non-terminal$"C" default terminal \$?C? default special A = B. production (A is the header and B the body) C D sequence (C occurs before D) C | D alternative (C or D occurs) A - B exception (A excluding B, B without any non-terminal) n * A repetition (A repeats n (integer) times) (C) group (expression C is grouped together) [C] optional (C may or not occurs) C+ one or more occurrences of C {C}+ one or more occurrences of C {C}* zero or more occurrences of C {C} zero or more occurrences of C C / D equivalent to: C {D C}* {C || D}+ equivalent to: C {D C}* {C || D}* equivalent to: [C {D C}*] {C || D} equivalent to: [C {D C}*] Please, see ebnf2ps documentation for EBNF syntax and how to use it. *** The package align.el will align columns within a region, using M-x align. Its mode-specific rules, based on regular expressions, determine where the columns should be split. In C and C++, for example, it will align variable names in declaration lists, or the equal signs of assignments. *** paragraph-indent-minor-mode' is a new minor mode supporting paragraphs in the same style as paragraph-indent-text-mode'. *** bs.el is a new package for buffer selection similar to list-buffers or electric-buffer-list. Use M-x bs-show to display a buffer menu with this package. See the Custom group bs'. *** find-lisp.el is a package emulating the Unix find command in Lisp. *** calculator.el is a small calculator package that is intended to replace desktop calculators such as xcalc and calc.exe. Actually, it is not too small - it has more features than most desktop calculators, and can be customized easily to get many more functions. It should not be confused with "calc" which is a much bigger mathematical tool which answers different needs. *** The minor modes cwarn-mode and global-cwarn-mode highlights suspicious C and C++ constructions. Currently, assignments inside expressions, semicolon following if', for' and while' (except, of course, after a do .. while' statement), and C++ functions with reference parameters are recognized. The modes require font-lock mode to be enabled. *** smerge-mode.el provides smerge-mode', a simple minor-mode for files containing diff3-style conflict markers, such as generated by RCS. *** 5x5.el is a simple puzzle game. *** hl-line.el provides hl-line-mode', a minor mode to highlight the current line in the current buffer. It also provides global-hl-line-mode' to provide the same behavior in all buffers. *** ansi-color.el translates ANSI terminal escapes into text-properties. Please note: if ansi-color-for-comint-mode' and global-font-lock-mode' are non-nil, loading ansi-color.el will disable font-lock and add ansi-color-apply' to comint-preoutput-filter-functions' for all shell-mode buffers. This displays the output of "ls --color=yes" using the correct foreground and background colors. *** delphi.el provides a major mode for editing the Delphi (Object Pascal) language. *** quickurl.el provides a simple