Newer Older
Gerd Moellmann's avatar
Gerd Moellmann committed
GNU Emacs NEWS -- history of user-visible changes.  2001-03-15
Colin Walters's avatar
Colin Walters committed
Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
Dave Love's avatar
Dave Love committed
3 4 5
See the end for copying conditions.

Please send Emacs bug reports to
Gerd Moellmann's avatar
Gerd Moellmann committed
For older news, see the file ONEWS
Dave Love's avatar
Dave Love committed

8 9 10 11
Temporary note:
 +++ indicates that the appropriate manual has already been updated.
 --- means no change in the manuals is called for.
When you add a new item, please add it without either +++ or ---
so we will look at it and add it to the manual.

Kim F. Storm's avatar
Kim F. Storm committed
* Installation Changes in Emacs 21.4

18 19
** Emacs can now be built without sound support.

Stefan Monnier's avatar
Stefan Monnier committed
20 21
** The `emacsserver' program has been removed, replaced with elisp code.

23 24 25 26
** Emacs now supports new configure options `--program-prefix',
`--program-suffix' and `--program-transform-name' that affect the names of
installed programs.

Colin Walters's avatar
Colin Walters committed
** By default, Emacs now uses a setgid helper program to update game
Colin Walters's avatar
Colin Walters committed
29 30 31 32
scores.  The directory ${localstatedir}/games/emacs is the normal
place for game scores to be stored.  This may be controlled by the
configure option `--with-game-dir'.  The specific user that Emacs uses
to own the game scores is controlled by `--with-game-user'.  If access
Colin Walters's avatar
Colin Walters committed
33 34
to a game user is not available, then scores will be stored separately
in each user's home directory.
Colin Walters's avatar
Colin Walters committed

36 37 38 39 40
** Leim is now part of the Emacs distribution.
You no longer need to download a separate tarball in order to build
Emacs with Leim.

41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57
** The Emacs Lisp Reference Manual is now part of the distribution.

The ELisp reference manual in Info format is built as part of the
Emacs build procedure and installed together with the Emacs User
Manual.  A menu item was added to the menu bar that makes it easy
accessible (Help->More Manuals->Emacs Lisp Reference).

** The Introduction to Programming in Emacs Lisp manual is now part of
the distribution.

This manual is now part of the standard distribution and is installed,
together with the Emacs User Manual, into the Info directory.  A menu
item was added to the menu bar that makes it easy accessible
(Help->More Manuals->Introduction to Emacs Lisp).

Eli Zaretskii's avatar
Eli Zaretskii committed
58 59 60
** Support for AIX 5.1 was added.

Gerd Moellmann's avatar
Gerd Moellmann committed
62 63
** Support for FreeBSD/Alpha has been added.

64 65 66
** Support for BSD/OS 5.0 was added.

67 68 69
** Support for GNU/Linux systems on S390 machines was added.

Eli Zaretskii's avatar
Eli Zaretskii committed
70 71 72 73
** Support for MacOS X was added.
See the files mac/README and mac/INSTALL for build instructions.

Andreas Schwab's avatar
Andreas Schwab committed
** Support for GNU/Linux systems on X86-64 machines was added.
Stefan Monnier's avatar
Stefan Monnier committed

78 79 80 81 82 83 84
** A French translation of the `Emacs Survival Guide' is available.

** A French translation of the Emacs Tutorial is available.

* Changes in Emacs 21.4

86 87 88 89 90
** Init file changes

You can now put the init files .emacs and .emacs_SHELL under
~/.emacs.d or directly under ~.  Emacs will find them in either place.

Bill Wohler's avatar
Bill Wohler committed
91 92 93 94 95
** MH-E changes.

Upgraded to mh-e version 6.1.1. There have been major changes since
version 5.0.2; see MH-E-NEWS for details.

96 97 98 99 100
** The `emacsclient' understand the options `--eval' and `--display'
which tell Emacs resp. to evaluate the given elisp expressions and
to use the given display when visiting files.

101 102 103 104
** The mode line position information now comes before the major mode.
When the file is maintained under version control, that information
appears between the position information and the major mode.
Francesco Potortì's avatar
Francesco Potortì committed

106 107 108
** C-x s (save-some-buffers) now offers an option `d' to diff a buffer
against its file, so you can see what changes you would be saving.

109 110 111 112 113 114
** You can now customize the use of window fringes.  To control this
for all frames, use M-x fringe-mode or the Show/Hide submenu of the
top-level Options menu, or customize the `fringe-mode' variable.  To
control this for a specific frame, use the command M-x
Simon Josefsson's avatar
Simon Josefsson committed

117 118 119 120 121
** There is a new user option `mail-default-directory' that allows you
to specify the value of `default-directory' for mail buffers.  This
directory is used for auto-save files of mail buffers.  It defaults to

123 124 125 126 127
** When you are root, and you visit a file whose modes specify
read-only, the Emacs buffer is now read-only too.  Type C-x C-q if you
want to make the buffer writable.  (As root, you will in fact be able
to alter the file.)

128 129 130
** The new command `revert-buffer-with-coding-system' (C-x RET r)
revisits the current file using a coding system that you specify.

** `ps-print' can now print Unicode characters.
133 134 135 136 137

Printing text with characters from the mule-unicode-* sets works with
ps-print, provided that you have installed the appropriate BDF fonts.
See the file INSTALL for URLs where you can find these fonts.

Eli Zaretskii's avatar
Eli Zaretskii committed
138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155
** The new options `buffers-menu-show-directories' and
`buffers-menu-show-status' let you control how buffers are displayed
in the menu dropped down when you click "Buffers" from the menu bar.

`buffers-menu-show-directories' controls whether the menu displays
leading directories as part of the file name visited by the buffer.
If its value is `unless-uniquify', the default, directories will be
shown unless uniquify-buffer-name-style' is non-nil.  The value of nil
and t turn the display of directories off and on, respectively.

`buffers-menu-show-status' controls whether the Buffers menu includes
the modified and read-only status of the buffers.  By default it is
t, and the status is shown.

Setting these variables directly does not take effect until next time
the Buffers menu is regenerated.

** The commands M-x customize-face and M-x customize-face-other-window
158 159 160
now look at the character after point.  If a face or faces are
specified for that character, the commands by default customize those

Dave Love's avatar
Dave Love committed
162 163 164 165
** New language environments: French, Cyrillic-KOI8-U, Windows-1251,
Cyrillic-KOI8-T, Bulgarian, Belarusian, Ukrainian, UTF-8,
Windows-1255, Welsh, Latin-7, Lithuanian, Latvian.

Dave Love's avatar
Dave Love committed
167 168 169 170 171 172
** New input methods: latin-alt-postfix, latin-postfix, latin-prefix,
ukrainian-computer, belarusian, bulgarian-bds, russian-computer,
vietnamese-telex, lithuanian-numeric, lithuanian-keyboard,
latvian-keyboard, welsh, georgian, rfc1345, ucs, sgml,
bulgarian-phonetic, dutch.

173 174 175 176 177 178
** A new coding system `euc-tw' has been added for traditional Chinese
in CNS encoding; it accepts both Big 5 and CNS as input; on saving,
Big 5 is then converted to CNS.

Dave Love's avatar
Dave Love committed
179 180 181 182 183 184 185 186 187 188 189 190 191 192 193
** Many new coding systems are available by loading the `code-pages'
library.  These include complete versions of most of those in
codepage.el, based Unicode mappings.

** The utf-8 coding system has been enhanced.  Untranslatable utf-8
sequences (mostly representing CJK characters) are composed into
single quasi-characters.  By loading the library utf-8-subst, you can
arrange to translate many utf-8 CJK character sequences into real
Emacs characters in a similar way to the Mule-UCS system.  The utf-8
coding system will now encode characters from most of Emacs's
one-dimensional internal charsets, specifically the ISO-8859 ones.

** New command `ucs-insert' inserts a character specified by its

Dave Love's avatar
Dave Love committed
195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210
** Limited support for character unification has been added.
Emacs now knows how to translate Latin-N chars between their charset
and some other Latin-N charset or Unicode.  By default this
translation will happen automatically on encoding.  Quail input
methods use the translations to make the input conformant with the
encoding of the buffer in which it's being used where possible.

You can force a more complete unification with the user option
unify-8859-on-decoding-mode.  That maps all the Latin-N character sets
into Unicode characters (from the latin-iso8859-1 and
mule-unicode-0100-24ff charsets) on decoding.

** There is support for decoding Greek and Cyrillic characters into
either Unicode (the mule-unicode charsets) or the iso-8859 charsets,
when possible.  The latter are more space-efficient.  This is
controlled by user option utf-8-fragment-on-decoding.
Stefan Monnier's avatar
Stefan Monnier committed

** The scrollbar under LessTif or Motif has a smoother drag-scrolling.
Stefan Monnier's avatar
Stefan Monnier committed
214 215 216
On the other hand, the size of the thumb does not represent the actual
amount of text shown any more (only a crude approximation of it).

217 218 219 220 221 222
** Emacs can produce an underscore-like (horizontal bar) cursor.
The underscore cursor is set by putting `(cursor-type . hbar)' in
default-frame-alist.  It supports variable heights, like the `bar'
cursor does.

223 224 225 226 227 228 229 230
** Filesets are collections of files.  You can define a fileset in
various ways, such as based on a directory tree or based on
program files that include other program files.

Once you have defined a fileset, you can perform various operations on
all the files in it, such as visiting them or searching and replacing
in them.

Eli Zaretskii's avatar
Eli Zaretskii committed
231 232 233 234
** PO translation files are decoded according to their MIME headers
when Emacs visits them.

236 237 238 239 240 241
** The game `mpuz' is enhanced.

`mpuz' now allows the 2nd factor not to have two identical digits.  By
default, all trivial operations involving whole lines are performed
automatically.  The game uses faces for better visual feedback.

243 244 245 246
** On X, MS Windows, and Mac OS, the blinking cursor's "off" state is
now shown as a hollow box or a thin bar.  However, you can control how
it blinks off by setting the variable `blink-cursor-alist'.

Kim F. Storm's avatar
Kim F. Storm committed

** Emacs now supports compound-text Extended Segments in X selections.
250 251 252

Some versions of X, notably XFree86, use Extended Segments to encode
in X selections characters that belong to character sets which are not
Eli Zaretskii's avatar
Eli Zaretskii committed
253 254
part of the list of approved standard encodings defined by the ICCCM
spec.  Examples of such non-standard encodings include ISO 8859-14, ISO
255 256 257 258
8859-15, KOI8-R, and BIG5.  The new coding system
`compound-text-with-extensions' supports these extensions, and is now
used by default for encoding and decoding X selections.  If you don't
want this support, set `selection-coding-system' to `compound-text'.

260 261
** The parameters of automatic hscrolling can now be customized.
262 263 264
The variable `hscroll-margin' determines how many columns away from
the window edge point is allowed to get before automatic hscrolling
will horizontally scroll the window.  The default value is 5.

266 267 268 269 270 271 272
The variable `hscroll-step' determines how many columns automatic
hscrolling will scroll the window when point gets too close to the
window edge.  If its value is zero, the default, Emacs scrolls the
window so as to center point.  If its value is an integer, it says how
many columns to scroll.  If the value is a floating-point number, it
gives the fraction of the window's width to scroll the window.

273 274 275
The variable `automatic-hscrolling' was renamed to
`auto-hscroll-mode'.  The old name is still available as an alias.

277 278 279 280 281
** The user option `tex-start-options-string' has been replaced
by two new user options: `tex-start-options', which should hold
command-line options to feed to TeX, and `tex-start-commands' which should hold
TeX commands to use at startup.

** New display feature: focus follows mouse.  If you set the variable
284 285 286 287
mouse-autoselect-window to non-nil value, moving the mouse to a different
Emacs window will select that window (minibuffer window can be selected
only when it is active).  The default is nil, so that this feature is not
Pavel Janík's avatar
Pavel Janík committed

289 290 291 292 293 294
** The new command `describe-char' (C-u C-x =) pops up a buffer with
description various information about a character, including its
encodings and syntax, its text properties, overlays, and widgets at
point.  You can get more information about some of them, by clicking
on mouse-sensitive areas or moving there and pressing RET.
Eli Zaretskii's avatar
Eli Zaretskii committed

Colin Walters's avatar
Colin Walters committed
296 297 298 299 300 301 302
** The new command `multi-occur' is just like `occur', except it can
search multiple buffers.  There is also a new command
`multi-occur-by-filename-regexp' which allows you to specify the
buffers to search by their filename.  Internally, Occur mode has been
rewritten, and now uses font-lock, among other changes.

Richard M. Stallman's avatar
Richard M. Stallman committed
304 305 306 307 308
** Emacs normally highlights mouse sensitive text whenever the mouse
is over the text.  By setting the new variable `mouse-highlight', you
can optionally enable mouse highlighting only after you move the
mouse, so that highlighting disappears when you press a key.  You can
also disable mouse highlighting.

Stefan Monnier's avatar
Stefan Monnier committed
311 312 313 314 315 316
** font-lock: in modes like C and Lisp where the fontification assumes that
an open-paren in column 0 is always outside of any string or comment,
font-lock now highlights any such open-paren-in-column-zero in bold-red
if it is inside a string or a comment, to indicate that it can cause
trouble with fontification and/or indentation.

317 318 319 320 321 322
** There's a new face `minibuffer-prompt'.
Emacs adds this face to the list of text properties stored in the
variable `minibuffer-prompt-properties', which is used to display the
prompt string.

Eli Zaretskii's avatar
Eli Zaretskii committed
324 325 326 327
** The new face `mode-line-inactive' is used to display the mode line
of non-selected windows.  The `mode-line' face is now used to display
the mode line of the currently selected window.

328 329 330
The new variable `mode-line-in-non-selected-windows' controls whether
the `mode-line-inactive' face is used.

Pavel Janík's avatar
Pavel Janík committed
** A menu item "Show/Hide" was added to the top-level menu "Options".
333 334 335 336 337 338
This menu allows you to turn various display features on and off (such
as the fringes, the tool bar, the speedbar, and the menu bar itself).
You can also move the vertical scroll bar to either side here or turn
it off completely.  There is also a menu-item to toggle displaying of
current date and time, current line and column number in the
Pavel Janík's avatar
Pavel Janík committed

341 342
** Speedbar has moved from the "Tools" top level menu to "Show/Hide".

343 344 345
** Emacs can now indicate in the mode-line the presence of new e-mails
in a directory or in a file.  See the documentation of the user option
Pavel Janík's avatar
Pavel Janík committed

348 349 350 351 352 353 354 355 356 357 358 359
** 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

360 361 362
** LDAP support now defaults to ldapsearch from OpenLDAP version 2.

** You can now disable pc-selection-mode after enabling it.
M-x pc-selection-mode behaves like a proper minor mode, and with no
366 367 368 369 370
argument it toggles the mode.

Turning off PC-Selection mode restores the global key bindings
that were replaced by turning on the mode.

Colin Walters's avatar
Colin Walters committed
372 373 374 375 376 377
** Emacs now displays a splash screen by default even if command-line
arguments were given.  The new command-line option --no-splash
disables the splash screen; see also the variable
`inhibit-startup-message' (which is also aliased as

378 379
** Changes in support of colors on character terminals

*** The new command-line option --color=MODE lets you specify a standard
382 383 384 385 386 387 388 389 390
mode for a tty color support.  It is meant to be used on character
terminals whose capabilities are not set correctly in the terminal
database, or with terminal emulators which support colors, but don't
set the TERM environment variable to a name of a color-capable
terminal.  "emacs --color" uses the same color commands as GNU `ls'
when invoked with "ls --color", so if your terminal can support colors
in "ls --color", it will support "emacs --color" as well.  See the
user manual for the possible values of the MODE parameter.

391 392 393 394 395 396 397 398 399 400
*** Emacs now supports several character terminals which provide more
than 8 colors.  For example, for `xterm', 16-color, 88-color, and
256-color modes are supported.  Emacs automatically notes at startup
the extended number of colors, and defines the appropriate entries for
all of these colors.

*** There's a new support for colors on `rxvt' terminal emulator.

401 402 403 404 405 406
** Emacs can now be invoked in full-screen mode on a windowed display.

When Emacs is invoked on a window system, the new command-line options
`--fullwidth', `--fullheight', and `--fullscreen' produce a frame
whose width, height, or both width and height take up the entire
screen size.  (For now, this does not work with some window managers.)

409 410
** Info-index offers completion.
Stefan Monnier's avatar
Stefan Monnier committed

Colin Walters's avatar
Colin Walters committed
413 414
** shell-mode now supports programmable completion using `pcomplete'.

Colin Walters's avatar
Colin Walters committed
** Emacs now tries to set up buffer coding systems for HTML/XML files
Colin Walters's avatar
Colin Walters committed

420 421 422 423 424
** The new command `comint-input-previous-argument' in comint-derived
modes (shell-mode etc) inserts arguments from previous command lines,
like bash's `ESC .' binding.  It is bound by default to `C-c .', but
otherwise behaves quite similarly to the bash version.

426 427 428 429 430 431 432 433 434 435 436 437 438
** Changes in C-h bindings:

C-h e displays the *Messages* buffer.

C-h followed by a control character is used for displaying files
    that do not change:

C-h C-f displays the FAQ.
C-h C-e displays the PROBLEMS file.

The info-search bindings on C-h C-f, C-h C-k and C-h C-i
have been moved to C-h F, C-h K and C-h S.

Kim F. Storm's avatar
Kim F. Storm committed
439 440 441 442 443 444 445 446 447 448
C-h c, C-h k, C-h w, and C-h f now handle remapped interactive commands.

- C-h c and C-h k report the actual command (after possible remapping)
  run by the key sequence.

- C-h w and C-h f on a command which has been remapped now report the
  command it is remapped to, and the keys which can be used to run
  that command.

For example, if C-k is bound to kill-line, and kill-line is remapped
to new-kill-line, these commands now report:
Kim F. Storm's avatar
Kim F. Storm committed
450 451 452 453 454 455 456 457 458 459

- C-h c and C-h k C-k reports:
  C-k runs the command new-kill-line

- C-h w and C-h f kill-line reports:
  kill-line is remapped to new-kill-line which is on C-k, <deleteline>

- C-h w and C-h f new-kill-line reports:
  new-kill-line is on C-k

461 462 463 464 465
** C-w in incremental search now grabs either a character or a word,
making the decision in a heuristic way.  This new job is done by the
command `isearch-yank-word-or-char'.  To restore the old behavior,
bind C-w to `isearch-yank-word' in `isearch-mode-map'.

467 468 469 470 471
** Yanking text now discards certain text properties that can
be inconvenient when you did not expect them.  The variable
`yank-excluded-properties' specifies which ones.  Insertion
of register contents and rectangles also discards these properties.

Colin Walters's avatar
Colin Walters committed
473 474 475 476 477
** Occur, Info, and comint-derived modes now support using
M-x font-lock-mode to toggle fontification.  The variable
`Info-fontify' is no longer applicable; to disable fontification,
remove `turn-on-font-lock' from `Info-mode-hook'.

479 480 481 482 483 484 485
** M-x grep now tries to avoid appending `/dev/null' to the command line
by using GNU grep `-H' option instead.  M-x grep will automatically
detect whether this is possible or not the first time it is invoked.
When `-H' is used, the grep command line supplied by the user is passed
unchanged to the system to execute, which allows more complicated
command lines to be used than was possible before.

487 488 489 490 491 492 493 494
** The face-customization widget has been reworked to be less confusing.
In particular, when you enable a face attribute using the corresponding
check-box, there's no longer a redundant `*' option in value selection
for that attribute; the values you can choose are only those which make
sense for the attribute.  When an attribute is de-selected by unchecking
its check-box, then the (now ignored, but still present temporarily in
case you re-select the attribute) value is hidden.

496 497 498 499 500
** When you set or reset a variable's value in a Customize buffer,
the previous value becomes the "backup value" of the variable.
You can go back to that backup value by selecting "Use Backup Value"
under the "[State]" button.

501 502
** In GUD mode, when talking to GDB, C-x C-a C-j "jumps" the program
503 504
counter to the specified source line (the one where point is).

** GUD mode improvements for jdb:
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

*** Search for source files using jdb classpath and class
    information. Fast startup since there is no need to scan all
    source files up front. There is also no need to create and maintain
    lists of source directories to scan. Look at `gud-jdb-use-classpath'
    and `gud-jdb-classpath' customization variables documentation.

*** Supports the standard breakpoint (gud-break, gud-clear)
    set/clear operations from java source files under the classpath, stack
    traversal (gud-up, gud-down), and run until current stack finish

*** Supports new jdb (Java 1.2 and later) in addition to oldjdb
    (Java 1.1 jdb).

*** The previous method of searching for source files has been
    preserved in case someone still wants/needs to use it.
    Set gud-jdb-use-classpath to nil.

  Added Customization Variables

*** gud-jdb-command-name.  What command line to use to invoke jdb.

*** gud-jdb-use-classpath. Allows selection of java source file searching
    method: set to t for new method, nil to scan gud-jdb-directories for
    java sources (previous method).

*** gud-jdb-directories. List of directories to scan and search for java
    classes using the original gud-jdb method (if gud-jdb-use-classpath
    is nil).

  Minor Improvements

*** Do not allow debugger output history variable to grow without bounds.

Stefan Monnier's avatar
Stefan Monnier committed
543 544 545 546
** hide-ifdef-mode now uses overlays rather than selective-display
to hide its text.  This should be mostly transparent but slightly
changes the behavior of motion commands line C-e and C-p.

548 549 550 551
** In Dired's ! command (dired-do-shell-command), `*' and `?' now
control substitution of the file names only when they are surrounded
by whitespace.  This means you can now use them as shell wildcards
too.  If you want to use just plain `*' as a wildcard, type `*""'; the
doublequotes make no difference in the shell, but they prevent
553 554
special treatment in `dired-do-shell-command'.

556 557 558 559
** Dired's v command now runs external viewers to view certain
types of files.  The variable `dired-view-command-alist' controls
what external viewers to use and when.

Stefan Monnier's avatar
Stefan Monnier committed
561 562 563 564 565
** Unquoted `$' in file names do not signal an error any more when
the corresponding environment variable does not exist.
Instead, the `$ENVVAR' text is left as is, so that `$$' quoting
is only rarely needed.

Stefan Monnier's avatar
Stefan Monnier committed
** jit-lock can now be delayed with `jit-lock-defer-time'.
568 569

If this variable is non-nil, its value should be the amount of Emacs
idle time in seconds to wait before starting fontification.  For
571 572
example, if you set `jit-lock-defer-time' to 0.25, fontification will
only happen after 0.25s of idle time.
Stefan Monnier's avatar
Stefan Monnier committed

574 575 576 577 578 579 580
** Marking commands extend the region when invoked multiple times.  If
you hit M-C-SPC (mark-sexp), M-@ (mark-word), M-h (mark-paragraph), or
C-M-h (mark-defun) repeatedly, the marked region will now be extended
each time, so you can mark the next two sexps with M-C-SPC M-C-SPC,
for example.  This feature also works for mark-end-of-sentence, if you
bind that to a key.
Stefan Monnier's avatar
Stefan Monnier committed

583 584 585 586
** Some commands do something special in Transient Mark mode when the
mark is active--for instance, they limit their operation to the
region.  Even if you don't normally use Transient Mark mode, you might
want to get this behavior from a particular command.  There are two
587 588
ways you can enable Transient Mark mode and activate the mark, for one
command only.

590 591 592 593
One method is to type C-SPC C-SPC; this enables Transient Mark mode
and sets the mark at point.  The other method is to type C-u C-x C-x.
This enables Transient Mark mode temporarily but does not alter the
mark or the region.

595 596 597 598
After these commands, Transient Mark mode remains enabled until you
deactivate the mark.  That typically happens when you type a command
that alters the buffer, but you can also deactivate the mark by typing

601 602 603 604
** A prefix argument is no longer required to repeat a jump to a
previous mark, i.e. C-u C-SPC C-SPC C-SPC ... will cycle through the
mark ring.  Use C-u C-u C-SPC to set the mark immediately after a jump.

606 607 608
** In the *Occur* buffer, `o' switches to it in another window, and
C-o displays the current line's occurrence in another window without
switching to it.

611 612 613 614
** When you specify a frame size with --geometry, the size applies to
all frames you create.  A position specified with --geometry only
affects the initial frame.

Kai Großjohann's avatar
Kai Großjohann committed
616 617
** M-h (mark-paragraph) now accepts a prefix arg.
With positive arg, M-h marks the current and the following paragraphs;
618 619
if the arg is negative, it marks the current and the preceding
Kai Großjohann's avatar
Kai Großjohann committed

621 622 623
** In Dired, the w command now copies the current line's file name
into the kill ring.

625 626 627 628 629
** The variables dired-free-space-program and dired-free-space-args
have been renamed to directory-free-space-program and
directory-free-space-args, and they now apply whenever Emacs puts a
directory listing into a buffer.

Stefan Monnier's avatar
Stefan Monnier committed
631 632 633
** mouse-wheels can now scroll a specific fraction of the window
(rather than a fixed number of lines) and the scrolling is `progressive'.

Stefan Monnier's avatar
Stefan Monnier committed
635 636
** The keyboard-coding-system is now automatically set based on
your current locale settings.  If it turns out that your terminal
Stefan Monnier's avatar
Stefan Monnier committed
637 638
does not support the encoding implied by your locale (for example,
it inserts non-ASCII chars if you hit M-i), you will need to add
Stefan Monnier's avatar
Stefan Monnier committed
639 640 641 642 643

	(set-keyboard-coding-system nil)

to your .emacs to revert to the old behavior.

644 645
** Emacs now reads the standard abbrevs file ~/.abbrev_defs
646 647 648
automatically at startup, if it exists.  When Emacs offers to save
modified buffers, it saves the abbrevs too if they have changed.  It
can do this either silently or asking for confirmation first,
Pavel Janík's avatar
Pavel Janík committed
according to the value of `save-abbrevs'.

652 653 654
** Display of hollow cursors now obeys the buffer-local value (if any)
of `cursor-in-non-selected-windows' in the buffer that the cursor
appears in.
Gerd Moellmann's avatar
Gerd Moellmann committed

656 657 658
** The variable `cursor-in-non-selected-windows' can now be set to any
of the recognized cursor types.
660 661 662
** The default values of `tooltip-delay' and `tooltip-hide-delay'
were changed.

664 665 666
** On terminals whose erase-char is ^H (Backspace), Emacs
now uses normal-erase-is-backspace-mode.

668 669 670 671
** The variable `auto-save-file-name-transforms' now has a third element that
controls whether or not the function `make-auto-save-file-name' will
attempt to construct a unique auto-save name (e.g. for remote files).

672 673 674 675 676 677 678 679 680 681 682
** Diary sexp entries can have custom marking in the calendar.
Diary sexp functions which only apply to certain days (such as
`diary-block' or `diary-cyclic' now take an optional parameter MARK,
which is the name of a face or a single-character string indicating
how to highlight the day in the calendar display.  Specifying a
single-character string as @var{mark} places the character next to the
day in the calendar.  Specifying a face highlights the day with that
face.  This lets you have different colors or markings for vacations,
appointments, paydays or anything else using a sexp.

683 684
** VC Changes

André Spiegel's avatar
André Spiegel committed
685 686 687 688 689 690 691 692 693 694
*** The key C-x C-q no longer checks files in or out, it only changes
the read-only state of the buffer (toggle-read-only).  We made this
change because we held a poll and found that many users were unhappy
with the previous behavior.  If you do prefer this behavior, you
can bind `vc-toggle-read-only' to C-x C-q in your .emacs:

    (global-set-key "\C-x\C-q" 'vc-toggle-read-only)

The function `vc-toggle-read-only' will continue to exist.

696 697 698 699 700 701 702
*** There is a new user option `vc-cvs-global-switches' that allows
you to specify switches that are passed to any CVS command invoked
by VC.  These switches are used as "global options" for CVS, which
means they are inserted before the command name.  For example, this
allows you to specify a compression level using the "-z#" option for

703 704
** EDiff changes.

Michael Kifer's avatar
Michael Kifer committed
706 707 708 709 710
***  When comparing directories.
Typing D brings up a buffer that lists the differences between the contents of
directories. Now it is possible to use this buffer to copy the missing files
from one directory to another.

Michael Kifer's avatar
Michael Kifer committed
712 713 714 715 716 717
*** When comparing files or buffers.
Typing the = key now offers to perform the word-by-word comparison of the
currently highlighted regions in an inferior Ediff session. If you answer 'n'
then it reverts to the old behavior and asks the user to select regions for

718 719 720 721
** The new command `ediff-backup' compares a file with its most recent
backup using `ediff'.  If you specify the name of a backup file,
`ediff-backup' compares it with the file of which it is a backup.

723 724
** Etags changes.

725 726 727
*** New regular expressions features

**** New syntax for regular expressions, multi-line regular expressions.
728 729 730 731 732
The syntax --ignore-case-regexp=/regex/ is now undocumented and retained
only for backward compatibility.  The new equivalent syntax is
--regex=/regex/i.  More generally, it is --regex=/TAGREGEX/TAGNAME/MODS,
where `/TAGNAME' is optional, as usual, and MODS is a string of 0 or
more characters among `i' (ignore case), `m' (multi-line) and `s'
733 734 735 736 737 738
(single-line).  The `m' and `s' modifiers behave as in Perl regular
expressions: `m' allows regexps to match more than one line, while `s'
(which implies `m') means that `.' matches newlines.  The ability to
span newlines allows writing of much more powerful regular expressions
and rapid prototyping for tagging new languages.

Francesco Potortì's avatar
Francesco Potortì committed
**** Regular expressions can use char escape sequences as in Gcc.
740 741 742 743
The escaped character sequence \a, \b, \d, \e, \f, \n, \r, \t, \v,
respectively, stand for the ASCII characters BEL, BS, DEL, ESC, FF, NL,

Francesco Potortì's avatar
Francesco Potortì committed
**** Regular expressions can be bound to a given language.
745 746 747 748
The syntax --regex={LANGUAGE}REGEX means that REGEX is used to make tags
only for files of language LANGUAGE, and ignored otherwise.  This is
particularly useful when storing regexps in a file.

Francesco Potortì's avatar
Francesco Potortì committed
**** Regular expressions can be read from a file.
750 751 752
The --regex=@regexfile option means read the regexps from a file, one
per line.  Lines beginning with space or tab are ignored.

753 754
*** New language parsing features

Francesco Potortì's avatar
Francesco Potortì committed
755 756 757
**** The `::' qualifier triggers C++ parsing in C file.
Previously, only the `template' and `class' keywords had this effect.

**** In Perl, packages are tags.
759 760 761 762
Subroutine tags are named from their package.  You can jump to sub tags
as you did before, by the sub name, or additionally by looking for

Francesco Potortì's avatar
Francesco Potortì committed
763 764
**** New language PHP.
Tags are functions, classes and defines.
Francesco Potortì's avatar
Francesco Potortì committed
765 766
If the --members option is specified to etags, tags are vars also.

Francesco Potortì's avatar
Francesco Potortì committed
767 768 769 770
**** New language HTML.
Title and h1, h2, h3 are tagged.  Also, tags are generated when name= is
used inside an anchor and whenever id= is used.

**** New default keywords for TeX.
772 773 774
The new keywords are def, newcommand, renewcommand, newenvironment and

Francesco Potortì's avatar
Francesco Potortì committed
**** In Makefiles, constants are tagged.
Richard M. Stallman's avatar
Richard M. Stallman committed
If you want the old behavior instead, thus avoiding to increase the
Francesco Potortì's avatar
Francesco Potortì committed
777 778 779
size of the tags file, use the --no-globals option.

**** In Prolog, etags creates tags for rules in addition to predicates.
780 781 782 783 784 785 786

*** Honour #line directives.
When Etags parses an input file that contains C preprocessor's #line
directives, it creates tags using the file name and line number
specified in those directives.  This is useful when dealing with code
created from Cweb source files.  When Etags tags the generated file, it
writes tags pointing to the source file.

Francesco Potortì's avatar
Francesco Potortì committed
*** New option --parse-stdin=FILE.
This option is mostly useful when calling etags from programs.  It can
Francesco Potortì's avatar
Francesco Potortì committed
be used (only once) in place of a file name on the command line.  Etags
791 792
will read from standard input and mark the produced tags as belonging to
the file FILE.

795 796 797
** The command line option --no-windows has been changed to
--no-window-system.  The old one still works, but is deprecated.

799 800 801
** The command `list-text-properties-at' has been deleted because
C-u C-x = gives the same information and more.

** `buffer-menu' and `list-buffers' now list buffers whose names begin
804 805
with a space, when those buffers are visiting files.  Normally buffers
whose names begin with space are omitted.

808 809 810
** You can now customize fill-nobreak-predicate to control where
filling can break lines.  We provide two sample predicates,
fill-single-word-nobreak-p and fill-french-nobreak-p.
Stefan Monnier's avatar
Stefan Monnier committed

813 814 815 816
** New user option `add-log-always-start-new-record'.
When this option is enabled, M-x add-change-log-entry will always
start a new record regardless of when the last record is.

Stefan Monnier's avatar
Stefan Monnier committed
818 819
** SGML mode has indentation and supports XML syntax.
The new variable `sgml-xml-mode' tells SGML mode to use XML syntax.
When this option is enabled, SGML tags are inserted in XML style,
Sam Steingold's avatar
Sam Steingold committed
i.e., there is always a closing tag.
Stefan Monnier's avatar
Stefan Monnier committed
By default, its setting is inferred on a buffer-by-buffer basis
from the file name or buffer contents.
Sam Steingold's avatar
Sam Steingold committed

Colin Walters's avatar
Colin Walters committed
826 827
** `xml-mode' is now an alias for `smgl-mode', which has XML support.

** New user option `isearch-resume-enabled'.
Richard M. Stallman's avatar
Richard M. Stallman committed
This option can be disabled, to avoid the normal behavior of isearch
831 832
which puts calls to `isearch-resume' in the command history.

Gerd Moellmann's avatar
Gerd Moellmann committed
834 835
** When the *scratch* buffer is recreated, its mode is set from
initial-major-mode, which normally is lisp-interaction-mode,
Sam Steingold's avatar
Sam Steingold committed
instead of using default-major-mode.
Gerd Moellmann's avatar
Gerd Moellmann committed

** Lisp mode now uses font-lock-doc-face for the docstrings.
Stefan Monnier's avatar
Stefan Monnier committed

841 842
** Perl mode has a new variable `perl-indent-continued-arguments'.
Stefan Monnier's avatar
Stefan Monnier committed

Glenn Morris's avatar
Glenn Morris committed
** Fortran mode has a new variable `fortran-directive-re'.
Glenn Morris's avatar
Glenn Morris committed
846 847
Adapt this to match the format of any compiler directives you use.
Lines that match are never indented, and are given distinctive font-locking.
Glenn Morris's avatar
Glenn Morris committed

849 850
** F90 mode has new navigation commands `f90-end-of-block',
Glenn Morris's avatar
Glenn Morris committed
`f90-beginning-of-block', `f90-next-block', `f90-previous-block'.
Glenn Morris's avatar
Glenn Morris committed

853 854
** Prolog mode has a new variable `prolog-font-lock-keywords'
855 856
to support use of font-lock.

Stefan Monnier's avatar
Stefan Monnier committed
858 859 860 861
** `special-display-buffer-names' and `special-display-regexps' now
understand two new boolean pseudo-frame-parameters `same-frame' and

Gerd Moellmann's avatar
Gerd Moellmann committed
863 864 865 866
** M-x setenv now expands environment variables of the form `$foo' and
`${foo}' in the specified new value of the environment variable.  To
include a `$' in the value, use `$$'.

868 869 870 871 872 873 874
** File-name completion can now ignore directories.
If an element of the list in `completion-ignored-extensions' ends in a
slash `/', it indicates a subdirectory that should be ignored when
completing file names.  Elements of `completion-ignored-extensions'
which do not end in a slash are never considered when a completion
candidate is a directory.

876 877
** The completion commands TAB, SPC and ? in the minibuffer apply only
to the text before point.  If there is text in the buffer after point,
878 879
it remains unchanged.

Gerd Moellmann's avatar
Gerd Moellmann committed
881 882 883 884
** New user option `inhibit-startup-buffer-menu'.
When loading many files, for instance with `emacs *', Emacs normally
displays a buffer menu.  This option turns the buffer menu off.

Gerd Moellmann's avatar
Gerd Moellmann committed
886 887
** Rmail now displays 5-digit message ids in its summary buffer.

889 890 891 892
** On MS Windows, the "system caret" now follows the cursor.
This enables Emacs to work better with programs that need to track
the cursor, for example screen magnifiers and text to speech programs.

894 895 896
** Tooltips now work on MS Windows.
See the Emacs 21.1 NEWS entry for tooltips for details.

** Some images are now supported on Windows.
Jason Rumney's avatar
Jason Rumney committed
PBM and XBM images are supported, other formats which require external
900 901
libraries may be supported in future.

903 904 905 906 907
** Pointing devices with more than 3 buttons are now supported on MS Windows.
The new variable `w32-pass-extra-mouse-buttons-to-system' controls
whether Emacs should handle the extra buttons itself (the default), or
pass them to Windows to be handled with system-wide functions.

909 910 911 912 913 914 915 916
** Under X11, it is possible to swap Alt and Meta (and Super and Hyper).
The new variables `x-alt-keysym', `x-hyper-keysym', `x-meta-keysym',
and `x-super-keysym' can be used to choose which keysyms Emacs should
use for the modifiers.  For example, the following two lines swap
Meta and Alt:
    (setq x-alt-keysym 'meta)
    (setq x-meta-keysym 'alt)

* New modes and packages in 21.4
918 919

** The new ido package is an extension of the iswitchb package
921 922 923 924
to do interactive opening of files and directories in addition to
interactive buffer switching.  Ido is a superset of iswitchb (with a
few exceptions), so don't enable both packages.

** The new cua package provides CUA-like keybindings using C-x for
927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962
cut (kill), C-c for copy, C-v for paste (yank), and C-z for undo.
With cua, the region can be set and extended using shifted movement
keys (like pc-selection-mode) and typed text replaces the active
region (like delete-selection-mode).  Do not enable these modes with
cua-mode.  Customize the variable `cua-mode' to enable cua.

In addition, cua provides unified rectangle support with visible
rectangle highlighting: Use S-return to start a rectangle, extend it
using the movement commands (or mouse-3), and cut or copy it using C-x
or C-c (using C-w and M-w also works).

Use M-o and M-c to `open' or `close' the rectangle, use M-b or M-f, to
fill it with blanks or another character, use M-u or M-l to upcase or
downcase the rectangle, use M-i to increment the numbers in the
rectangle, use M-n to fill the rectangle with a numeric sequence (such
as 10 20 30...), use M-r to replace a regexp in the rectangle, and use
M-' or M-/ to restrict command on the rectangle to a subset of the
rows.  See the commentary in cua-base.el for more rectangle commands.

Cua also provides unified support for registers:  Use a numeric
prefix argument between 0 and 9, i.e. M-0 .. M-9, for C-x, C-c, and
C-v to cut or copy into register 0-9, or paste from register 0-9.

The last text deleted (not killed) is automatically stored in
register 0.  This includes text deleted by typing text.

Finally, cua provides a global mark which is set using S-C-space.
When the global mark is active, any text which is cut or copied is
automatically inserted at the global mark position.  See the
commentary in cua-base.el for more global mark related commands.

The features of cua also works with the standard emacs bindings for
kill, copy, yank, and undo.  If you want to use cua mode, but don't
want the C-x, C-c, C-v, and C-z bindings, you may customize the
`cua-enable-cua-keys' variable.

** The new keypad setup package provides several common bindings for
964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982
the numeric keypad which is available on most keyboards.  The numeric
keypad typically has the digits 0 to 9, a decimal point, keys marked
+, -, /, and *, an Enter key, and a NumLock toggle key.  The keypad
package only controls the use of the digit and decimal keys.

By customizing the variables `keypad-setup', `keypad-shifted-setup',
`keypad-numlock-setup', and `keypad-numlock-shifted-setup', or by
using the function `keypad-setup', you can rebind all digit keys and
the decimal key of the keypad in one step for each of the four
possible combinations of the Shift key state (not pressed/pressed) and
the NumLock toggle state (off/on).

The choices for the keypad keys in each of the above states are:
`Plain numeric keypad' where the keys generates plain digits,
`Numeric keypad with decimal key' where the character produced by the
decimal key can be customized individually (for internationalization),
`Numeric Prefix Arg' where the keypad keys produce numeric prefix args
for emacs editing commands, `Cursor keys' and `Shifted Cursor keys'
where the keys work like (shifted) arrow keys, home/end, etc., and
Kim F. Storm's avatar
Kim F. Storm committed
983 984 985
`Unspecified/User-defined' where the keypad keys (kp-0, kp-1, etc.)
are left unspecified and can be bound individually through the global
or local keymaps.

** The new kmacro package provides a simpler user interface to
988 989
emacs' keyboard macro facilities.

990 991 992
Basically, it uses two function keys (default F3 and F4) like this:
F3 starts a macro, F4 ends the macro, and pressing F4 again executes
the last macro.  While defining the macro, F3 inserts a counter value
993 994
which automatically increments every time the macro is executed.

Kim F. Storm's avatar
Kim F. Storm committed
995 996 997 998 999 1000 1001 1002 1003 1004
There is now a keyboard macro ring which stores the most recently
defined macros.

The C-x C-k sequence is now a prefix for the kmacro keymap which
defines bindings for moving through the keyboard macro ring,
C-x C-k C-p and C-x C-k C-n, editing the last macro C-x C-k C-e,
manipulating the macro counter and format via C-x C-k C-c,
C-x C-k C-a, and C-x C-k C-f.  See the commentary in kmacro.el
for more commands.

Francesco Potortì's avatar
Francesco Potortì committed
The normal macro bindings C-x (, C-x ), and C-x e now interfaces to
Kim F. Storm's avatar
Kim F. Storm committed
the keyboard macro ring.

Kim F. Storm's avatar
Kim F. Storm committed
1008 1009
The C-x e command now automatically terminates the current macro
before calling it, if used while defining a macro.
1010 1011 1012 1013 1014 1015

In addition, when ending or calling a macro with C-x e, the macro can
be repeated immediately by typing just the `e'.  You can customize
this behaviour via the variable kmacro-call-repeat-key and

Kim F. Storm's avatar
Kim F. Storm committed
1016 1017 1018 1019
Keyboard macros can now be debugged and edited interactively.
C-x C-k SPC will step through the last keyboard macro one key sequence
at a time, prompting for the actions to take.

Eli Zaretskii's avatar
Eli Zaretskii committed
** Calc is now part of the Emacs distribution.
Eli Zaretskii's avatar
Eli Zaretskii committed
1022 1023 1024

Calc is an advanced desk calculator and mathematical tool written in
Emacs Lisp.  Its documentation is in a separate manual; within Emacs,
1025 1026
type "C-h i m calc RET" to read that manual.  A reference card is
available in `etc/calccard.tex' and `etc/'.
Eli Zaretskii's avatar
Eli Zaretskii committed

** Tramp is now part of the distribution.
Kai Großjohann's avatar
Kai Großjohann committed
1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043

This package is similar to Ange-FTP: it allows you to edit remote
files.  But whereas Ange-FTP uses FTP to access the remote host,
Tramp uses a shell connection.  The shell connection is always used
for filename completion and directory listings and suchlike, but for
the actual file transfer, you can choose between the so-called
`inline' methods (which transfer the files through the shell
connection using base64 or uu encoding) and the `out-of-band' methods
(which invoke an external copying program such as `rcp' or `scp' or
`rsync' to do the copying).

Shell connections can be acquired via `rsh', `ssh', `telnet' and also
`su' and `sudo'.

** The new global minor mode `file-name-shadow-mode' modifies the way
1046 1047 1048 1049 1050
filenames being entered by the user in the minibuffer are displayed, so
that it's clear when part of the entered filename will be ignored due to
emacs' filename parsing rules.  The ignored portion can be made dim,
invisible, or otherwise less visually noticable.  The display method may
be displayed by customizing the variable `file-name-shadow-properties'.

** The ruler-mode.el library provides a minor mode for displaying an
Gerd Moellmann's avatar
Gerd Moellmann committed
1054 1055 1056 1057
"active" ruler in the header line.  You can use the mouse to visually
change the `fill-column', `window-margins' and `tab-stop-list'

** The minor mode Reveal mode makes text visible on the fly as you
Stefan Monnier's avatar
Stefan Monnier committed
1060 1061 1062 1063
move your cursor into hidden region of the buffer.
It should work with any package that uses overlays to hide parts
of a buffer, such as outline-minor-mode, hs-minor-mode, hide-ifdef-mode, ...

There is also Global Reveal mode which affects all buffers.
Gerd Moellmann's avatar
Gerd Moellmann committed

** The new package ibuffer provides a powerful, completely
Colin Walters's avatar
Colin Walters committed
1068 1069
customizable replacement for buff-menu.el.

** The new package table.el implements editable, WYSIWYG, embedded
1071 1072 1073 1074 1075 1076
`text tables' in Emacs buffers.  It simulates the effect of putting
these tables in a special major mode.  The package emulates WYSIWYG
table editing available in modern word processors.  The package also
can generate a table source in typesetting and markup languages such
as latex and html from the visually laid out text table.

1077 1078 1079 1080 1081 1082
** SES mode (ses-mode) is a new major mode for creating and editing
spreadsheet files.  Besides the usual Emacs features (intuitive command
letters, undo, cell formulas in Lisp, plaintext files, etc.) it also offers
viral immunity and import/export of tab-separated values.

1083 1084
** Support for `magic cookie' standout modes has been removed.
1085 1086 1087 1088
Emacs will still work on terminals that require magic cookies in order
to use standout mode, however they will not be able to display
mode-lines in inverse-video.

Dave Love's avatar
Dave Love committed
1089 1090 1091
** The obsolete C mode (c-mode.el) has been removed to avoid problems
with Custom.

Gerd Moellmann's avatar
Gerd Moellmann committed
Kim F. Storm's avatar
Kim F. Storm committed
* Lisp Changes in Emacs 21.4

1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117
** New Lisp library testcover.el works with edebug to help you determine
whether you've tested all your Lisp code.  Function testcover-start
instruments all functions in a given file.  Then test your code.  Function
testcover-mark-all adds overlay "splotches" to the Lisp file's buffer to
show where coverage is lacking.  Command testcover-next-mark (bind it to
a key!) will move point forward to the next spot that has a splotch.

*** Normally, a red splotch indicates the form was never completely evaluated;
a brown splotch means it always evaluated to the same value.  The red
splotches are skipped for forms that can't possibly complete their evaluation,
such as `error'.  The brown splotches are skipped for forms that are expected
to always evaluate to the same value, such as (setq x 14).

*** For difficult cases, you can add do-nothing macros to your code to help
out the test coverage tool.  The macro 1value suppresses a brown splotch for
its argument.  The macro noreturn suppresses a red splotch.

** New function unsafep returns nil if the given Lisp form can't possibly
do anything dangerous; otherwise it returns a reason why the form might be
unsafe (calls dangerous function, alters global variable, etc).

1118 1119 1120 1121
** When you are printing using print-continuous-numbering,
if no objects have had to be recorded in print-number-table,
all elements of print-number-table are nil.

1122 1123 1124 1125 1126 1127
** When using non-toolkit scroll bars with the default width,
the scroll-bar-width frame parameter value is nil.

** The new function copy-abbrev-table returns a new abbrev table that
is a copy of a given abbrev table.

Richard M. Stallman's avatar
Richard M. Stallman committed
Richard M. Stallman's avatar
Richard M. Stallman committed
1129 1130
** The option --script FILE runs Emacs in batch mode and loads FILE.
It is useful for writing Emacs Lisp shell script files, because they
Richard M. Stallman's avatar
Richard M. Stallman committed
can start with this line:
Richard M. Stallman's avatar
Richard M. Stallman committed
1132 1133 1134

   #!/usr/bin/emacs --script

Stefan Monnier's avatar
Stefan Monnier committed
1135 1136 1137
** A function's docstring can now hold the function's usage info on
its last line.  It should match the regexp "\n\n(fn.*)\\'".

Dave Love's avatar
Dave Love committed
1138 1139 1140
** New CCL functions `lookup-character' and `lookup-integer' access
hash tables defined by the Lisp function `define-translation-hash-table'.

1141 1142 1143
** The new function `minibufferp' returns non-nil if its optional buffer
argument is a minibuffer.  If the argument is omitted it defaults to
the current buffer.

1145 1146 1147
** There is a new Warnings facility; see the functions `warn'
and `display-warning'.

Stefan Monnier's avatar
Stefan Monnier committed
1148 1149 1150 1151 1152
** The functions all-completions and try-completion now accept lists
of strings as well as hash-tables additionally to alists, obarrays
and functions.  Furthermore, the function `test-completion' is now
exported to Lisp.

1153 1154 1155
** When pure storage overflows while dumping, Emacs now prints how
much pure storage it will approximately need.

1156 1157 1158 1159 1160
** The new variable `auto-coding-functions' lets you specify functions
to examine a file being visited and deduce the proper coding system
for it.  (If the coding system is detected incorrectly for a specific
file, you can put a `coding:' tags to override it.)

1161 1162 1163
** The new function `merge-coding-systems' fills in unspecified aspects
of one coding system from another coding system.

1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198
** The variable `safe-local-eval-forms' specifies a list of forms that
are ok to evaluate when they appear in an `eval' local variables
specification.  Normally Emacs asks for confirmation before evaluating
such a form, but if the form appears in this list, no confirmation is

** If a function has a non-nil `safe-local-eval-function' property,
that means it is ok to evaluate some calls to that function when it
appears in an `eval' local variables specification.  If the property
is t, then any form calling that function with constant arguments is
ok.  If the property is a function or list of functions, they are called
with the form as argument, and if any returns t, the form is ok to call.

If the form is not "ok to call", that means Emacs asks for
confirmation as before.

** Controlling the left and right fringe widths.

The left and right fringe widths can now be controlled by setting the
`left-fringe' and `right-fringe' frame parameters to an integer value
specifying the width in pixels.  Setting the width to 0 effectively
removes the corresponding fringe.

The actual fringe widths may deviate from the specified widths, since
the combined fringe widths must match an integral number of columns.
The extra width is distributed evenly between the left and right fringe.
For force a specific fringe width, specify the width as a negative
integer (if both widths are negative, only the left fringe gets the
specified width).

Setting the width to nil (the default), restores the default fringe
width which is the minimum number of pixels necessary to display any
of the currently defined fringe bitmaps.  The width of the built-in
fringe bitmaps is 8 pixels.

Stefan Monnier's avatar
Stefan Monnier committed
Stefan Monnier's avatar
Stefan Monnier committed
1200 1201 1202 1203 1204 1205 1206
** Renamed file hooks to follow the convention:
find-file-hooks to find-file-hook,
find-file-not-found-hooks to find-file-not-found-functions,
write-file-hooks to write-file-functions,
write-contents-hooks to write-contents-functions.
Marked local-write-file-hooks as obsolete (use the LOCAL arg of `add-hook').

1207 1208 1209 1210
** The new variable `delete-frame-functions' replaces `delete-frame-hook'. 
It was renamed to follow the naming conventions for abnormal hooks.  The old
name remains available as an alias, but has been marked obsolete.

Kim F. Storm's avatar
Kim F. Storm committed
1211 1212 1213 1214 1215 1216 1217 1218 1219
** The `read-file-name' function now takes an additional argument which
specifies a predicate which the file name read must satify.  The
new variable `read-file-name-predicate' contains the predicate argument
while reading the file name from the minibuffer; the predicate in this
variable is used by read-file-name-internal to filter the completion list.

** The new variable `read-file-name-function' can be used by lisp code
to override the internal read-file-name function.

Kim F. Storm's avatar
Kim F. Storm committed
1220 1221 1222 1223
** The new function `read-directory-name' can be used instead of
`read-file-name' to read a directory name; when used, completion
will only show directories.

1224 1225 1226 1227 1228 1229 1230 1231
** The new function `file-remote-p' tests a file name and returns
non-nil if it specifies a remote file (one that Emacs accesses using
its own special methods and not directly through the file system).

** When a Lisp file uses CL functions at run-time, compiling the file
now issues warnings about these calls, unless the file performs
(require 'cl) when loaded.

** The new Lisp library fringe.el controls the apperance of fringes.
Simon Josefsson's avatar
Simon Josefsson committed

Gerd Moellmann's avatar
Gerd Moellmann committed
1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
** The `defmacro' form may contain declarations specifying how to
indent the macro in Lisp mode and how to debug it with Edebug.  The
syntax of defmacro has been extended to


DECLARATION is a list `(declare DECLARATION-SPECIFIER ...)'.  The
declaration specifiers supported are:

(indent INDENT)
	Set NAME's `lisp-indent-function' property to INDENT.

(edebug DEBUG)
	Set NAME's `edebug-form-spec' property to DEBUG.  (This is
	equivalent to writing a `def-edebug-spec' for the macro.

Kim F. Storm's avatar
Kim F. Storm committed
1250 1251 1252
** Interactive commands can be remapped through keymaps.

This is an alternative to using defadvice or substitute-key-definition
Richard M. Stallman's avatar
Richard M. Stallman committed
to modify the behavior of a key binding using the normal keymap
Kim F. Storm's avatar
Kim F. Storm committed
1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271
binding and lookup functionality.

When a key sequence is bound to a command, and that command is
remapped to another command, that command is run instead of the
original command.

Suppose that minor mode my-mode has defined the commands