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[Emacs-diffs] Changes to emacs/etc/NEWS
|
From: |
Richard M . Stallman |
|
Subject: |
[Emacs-diffs] Changes to emacs/etc/NEWS |
|
Date: |
Mon, 09 May 2005 17:02:38 -0400 |
Index: emacs/etc/NEWS
diff -c emacs/etc/NEWS:1.1183 emacs/etc/NEWS:1.1184
*** emacs/etc/NEWS:1.1183 Sun May 8 23:02:44 2005
--- emacs/etc/NEWS Mon May 9 21:02:37 2005
***************
*** 104,109 ****
--- 104,113 ----
---
** Building with -DENABLE_CHECKING does not automatically build with union
types any more. Add -DUSE_LISP_UNION_TYPE if you want union types.
+
+ ---
+ ** When pure storage overflows while dumping, Emacs now prints how
+ much pure storage it will approximately need.
* Startup Changes in Emacs 22.1
***************
*** 181,187 ****
--- 185,265 ----
modified buffers, it saves the abbrevs too if they have changed. It
can do this either silently or asking for confirmation first,
according to the value of `save-abbrevs'.
+
+ * Incompatible Editing Changes in Emacs 22.1
+
+ +++
+ ** M-g is now a prefix key.
+ M-g g and M-g M-g run goto-line.
+ M-g n and M-g M-n run next-error (like C-x `).
+ M-g p and M-g M-p run previous-error.
+
+ +++
+ ** C-u M-g M-g switches to the most recent previous buffer,
+ and goes to the specified line in that buffer.
+
+ When goto-line starts to execute, if there's a number in the buffer at
+ point then it acts as the default argument for the minibuffer.
+
+ +++
+ ** The old bindings C-M-delete and C-M-backspace have been deleted,
+ since there are situations where one or the other will shut down
+ the operating system or your X server.
+
+ +++
+ ** line-move-ignore-invisible now defaults to t.
+
+ +++
+ ** When the undo information of the current command gets really large
+ (beyond the value of `undo-outer-limit'), Emacs discards it and warns
+ you about it.
+
+ +++
+ ** `apply-macro-to-region-lines' now operates on all lines that begin
+ in the region, rather than on all complete lines in the region.
+
+ +++
+ ** 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 ... cycles through the
+ mark ring. Use C-u C-u C-SPC to set the mark immediately after a jump.
+
+ +++
+ ** 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.
+
+ +++
+ ** In incremental search, C-w is changed. M-%, C-M-w and C-M-y are special.
+
+ See below under "incremental search changes".
+
+ ---
+ ** C-x C-f RET, typing nothing in the minibuffer, is no longer a special case.
+
+ Since the default input is the current directory, this has the effect
+ of specifying the current directory. Normally that means to visit the
+ directory with Dired.
+
+ +++
+ ** 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,
+ it remains unchanged.
+
+ +++
+ ** M-o now is the prefix key for setting text properties;
+ M-o M-o requests refontification.
+
+ +++
+ ** You can now follow links by clicking Mouse-1 on the link.
+ See below for more details.
+
+ +++
+ ** 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
+ special treatment in `dired-do-shell-command'.
* Editing Changes in Emacs 22.1
***************
*** 190,228 ****
On 32bit machines, it is now 256M (i.e. 268435455).
+++
- ** 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.
-
- +++
** M-g is now a prefix key.
M-g g and M-g M-g run goto-line.
M-g n and M-g M-n run next-error (like C-x `).
M-g p and M-g M-p run previous-error.
+++
! ** M-o now is the prefix key for setting text properties;
! M-o M-o requests refontification.
!
! +++
! ** C-u M-x goto-line now switches to the most recent previous buffer,
and goes to the specified line in that buffer.
When goto-line starts to execute, if there's a number in the buffer at
point then it acts as the default argument for the minibuffer.
+++
- ** You can now switch buffers in a cyclic order with C-x C-left and
- (prev-buffer) and C-x C-right (next-buffer). C-x left and C-x right
- can be used as well.
-
- +++
** The old bindings C-M-delete and C-M-backspace have been deleted,
since there are situations where one or the other will shut down
the operating system or your X server.
+++
! ** `undo-only' does an undo which does not redo any previous undo.
+++
** When the undo information of the current command gets really large
--- 268,292 ----
On 32bit machines, it is now 256M (i.e. 268435455).
+++
** M-g is now a prefix key.
M-g g and M-g M-g run goto-line.
M-g n and M-g M-n run next-error (like C-x `).
M-g p and M-g M-p run previous-error.
+++
! ** C-u M-g M-g switches to the most recent previous buffer,
and goes to the specified line in that buffer.
When goto-line starts to execute, if there's a number in the buffer at
point then it acts as the default argument for the minibuffer.
+++
** The old bindings C-M-delete and C-M-backspace have been deleted,
since there are situations where one or the other will shut down
the operating system or your X server.
+++
! ** line-move-ignore-invisible now defaults to t.
+++
** When the undo information of the current command gets really large
***************
*** 230,240 ****
you about it.
+++
! ** M-SPC (just-one-space) when given a numeric argument N
! converts whitespace around point to N spaces.
+++
! ** line-move-ignore-invisible now defaults to t.
---
** New commands to operate on pairs of open and close characters:
--- 294,313 ----
you about it.
+++
! ** `apply-macro-to-region-lines' now operates on all lines that begin
! in the region, rather than on all complete lines in the region.
+++
! ** You can now switch buffers in a cyclic order with C-x C-left and
! (prev-buffer) and C-x C-right (next-buffer). C-x left and C-x right
! can be used as well.
!
! +++
! ** `undo-only' does an undo which does not redo any previous undo.
!
! +++
! ** M-SPC (just-one-space) when given a numeric argument N
! converts whitespace around point to N spaces.
---
** New commands to operate on pairs of open and close characters:
***************
*** 256,279 ****
in Indented-Text mode.
+++
! ** Movement commands `beginning-of-buffer', `end-of-buffer',
! `beginning-of-defun', `end-of-defun' do not set the mark if the mark
! is already active in Transient Mark mode.
!
! +++
! ** `apply-macro-to-region-lines' now operates on all lines that begin
! in the region, rather than on all complete lines in the region.
! +++
! ** 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 `$$'.
+++
! ** Unquoted `$' in file names do not signal an error any more when
! the corresponding environment variable does not exist.
! Instead, the `$ENVVAR' text is left as is, so that `$$' quoting
! is only rarely needed.
+++
** The default for the paper size (variable ps-paper-type) is taken
--- 329,344 ----
in Indented-Text mode.
+++
! ** M-x setenv now expands environment variable references.
! Substrings of the form `$foo' and `${foo}' in the specified new value
! now refer to the value of environment variable foo. To include a `$'
! in the value, use `$$'.
+++
! ** `special-display-buffer-names' and `special-display-regexps' now
! understand two new boolean pseudo-frame-parameters `same-frame' and
! `same-window'.
+++
** The default for the paper size (variable ps-paper-type) is taken
***************
*** 287,304 ****
mark ring. Use C-u C-u C-SPC to set the mark immediately after a jump.
+++
! *** 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 extends 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. It also extends the region when the mark is active in Transient
! Mark mode, regardless of the last command. To start a new region with
! one of marking commands in Transient Mark mode, you can deactivate the
! active region with C-g, or set the new mark with C-SPC.
+++
*** M-h (mark-paragraph) now accepts a prefix arg.
With positive arg, M-h marks the current and the following paragraphs;
if the arg is negative, it marks the current and the preceding
paragraphs.
--- 352,372 ----
mark ring. Use C-u C-u C-SPC to set the mark immediately after a jump.
+++
! *** Marking commands extend the region when invoked multiple times.
!
! If you type C-M-SPC (mark-sexp), M-@ (mark-word), M-h
! (mark-paragraph), or C-M-h (mark-defun) repeatedly, the marked region
! extends 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. It also extends the
! region when the mark is active in Transient Mark mode, regardless of
! the last command. To start a new region with one of marking commands
! in Transient Mark mode, you can deactivate the active region with C-g,
! or set the new mark with C-SPC.
+++
*** M-h (mark-paragraph) now accepts a prefix arg.
+
With positive arg, M-h marks the current and the following paragraphs;
if the arg is negative, it marks the current and the preceding
paragraphs.
***************
*** 321,326 ****
--- 389,399 ----
that alters the buffer, but you can also deactivate the mark by typing
C-g.
+ +++
+ *** Movement commands `beginning-of-buffer', `end-of-buffer',
+ `beginning-of-defun', `end-of-defun' do not set the mark if the mark
+ is already active in Transient Mark mode.
+
** Help command changes:
+++
***************
*** 416,428 ****
match is listed first, and the calculated score is shown for each
matching item.
- ** Window selection changes:
-
- +++
- *** `special-display-buffer-names' and `special-display-regexps' now
- understand two new boolean pseudo-frame-parameters `same-frame' and
- `same-window'.
-
** Incremental Search changes:
+++
--- 489,494 ----
***************
*** 486,491 ****
--- 552,563 ----
** File operation changes:
+++
+ *** 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.
+
+ +++
*** In processing a local variables list, Emacs strips the prefix and
suffix are from every line before processing all the lines.
***************
*** 566,572 ****
prompt string.
---
! *** Enhanced visual feedback in *Completions* buffer.
Completions lists use faces to highlight what all completions
have in common and where they begin to differ.
--- 638,644 ----
prompt string.
---
! *** Enhanced visual feedback in `*Completions*' buffer.
Completions lists use faces to highlight what all completions
have in common and where they begin to differ.
***************
*** 600,605 ****
--- 672,682 ----
** Redisplay changes:
+ +++
+ *** 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.
+
*** Easy to overlook single character negation is now font-locked.
You can use the new variable `font-lock-negation-char-face' and the face of
the same name to customize this. Currently the cc-modes, sh-script-mode,
***************
*** 631,637 ****
`auto-hscroll-mode'. The old name is still available as an alias.
*** Moving or scrolling through images (and other lines) taller that
! the window now works sensible, by automatically adjusting the window's
vscroll property.
+++
--- 708,714 ----
`auto-hscroll-mode'. The old name is still available as an alias.
*** Moving or scrolling through images (and other lines) taller that
! the window now works sensibly, by automatically adjusting the window's
vscroll property.
+++
***************
*** 719,724 ****
--- 796,805 ----
** Font-Lock changes:
+++
+ *** M-o now is the prefix key for setting text properties;
+ M-o M-o requests refontification.
+
+ +++
*** All modes now support using M-x font-lock-mode to toggle
fontification, even those such as Occur, Info, and comint-derived
modes that do their own fontification in a special way.
***************
*** 761,767 ****
jit-lock-context-time determines the delay after which contextual
refontification takes place.
! ** Menu Bar changes:
---
*** A menu item "Show/Hide" was added to the top-level menu "Options".
--- 842,848 ----
jit-lock-context-time determines the delay after which contextual
refontification takes place.
! ** Menu support:
---
*** A menu item "Show/Hide" was added to the top-level menu "Options".
***************
*** 775,780 ****
--- 856,891 ----
---
*** Speedbar has moved from the "Tools" top level menu to "Show/Hide".
+ ---
+ *** You can exit dialog windows and menus by typing C-g.
+
+ ---
+ *** The menu item "Open File..." has been split into two items, "New File..."
+ and "Open File...". "Open File..." now opens only existing files. This is
+ to support existing GUI file selection dialogs better.
+
+ +++
+ *** The file selection dialog for Gtk+, Mac, W32 and Motif/Lesstif can be
+ disabled by customizing the variable `use-file-dialog'.
+
+ ---
+ *** The pop up menus for Lucid now stay up if you do a fast click and can
+ be navigated with the arrow keys (like Gtk+, Mac and W32).
+
+ +++
+ *** The Lucid menus can display multilingual text in your locale. You have
+ to explicitly specify a fontSet resource for this to work, for example
+ `-xrm "Emacs*fontSet: -*-helvetica-medium-r-*--*-120-*-*-*-*-*-*,*"'.
+
+ ---
+ *** Dialogs for Lucid/Athena and Lesstif/Motif now pops down when pressing
+ ESC, like they do for Gtk+, Mac and W32.
+
+ +++
+ *** For Gtk+ version 2.4, you can make Emacs use the old file dialog
+ by setting the variable `x-use-old-gtk-file-dialog' to t. Default is to use
+ the new dialog.
+
** Mouse changes:
+++
***************
*** 1184,1191 ****
buffers to search by their filename. Internally, Occur mode has been
rewritten, and now uses font-lock, among other changes.
+++
! ** Grep has been decoupled from compilation mode setup.
There's a new separate package grep.el, with its own submenu and
customization group.
--- 1295,1304 ----
buffers to search by their filename. Internally, Occur mode has been
rewritten, and now uses font-lock, among other changes.
+ ** Grep changes:
+
+++
! *** Grep has been decoupled from compilation mode setup.
There's a new separate package grep.el, with its own submenu and
customization group.
***************
*** 1230,1267 ****
unchanged to the system to execute, which allows more complicated
command lines to be used than was possible before.
- ** Emacs server changes:
-
- +++
- *** You can have several Emacs servers on the same machine.
-
- % emacs --eval '(setq server-name "foo")' -f server-start &
- % emacs --eval '(setq server-name "bar")' -f server-start &
- % emacsclient -s foo file1
- % emacsclient -s bar file2
-
- +++
- *** The `emacsclient' command understands the options `--eval' and
- `--display' which tell Emacs respectively to evaluate the given elisp
- expression and to use the given display when visiting files.
-
- +++
- *** User option `server-mode' can be used to start a server process.
-
- ** Menu support:
-
- ---
- *** Dialogs and menus pop down if you type C-g.
-
- ---
- *** The menu item "Open File..." has been split into two items, "New File..."
- and "Open File...". "Open File..." now opens only existing files. This is
- to support existing GUI file selection dialogs better.
-
- +++
- *** The file selection dialog for Gtk+, Mac, W32 and Motif/Lesstif can be
- disabled by customizing the variable `use-file-dialog'.
-
** X Windows Support:
+++
--- 1343,1348 ----
***************
*** 1296,1319 ****
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).
- ---
- *** The pop up menus for Lucid now stay up if you do a fast click and can
- be navigated with the arrow keys (like Gtk+, Mac and W32).
-
- +++
- *** The Lucid menus can display multilingual text in your locale. You have
- to explicitly specify a fontSet resource for this to work, for example
- `-xrm "Emacs*fontSet: -*-helvetica-medium-r-*--*-120-*-*-*-*-*-*,*"'.
-
- ---
- *** Dialogs for Lucid/Athena and Lesstif/Motif now pops down when pressing
- ESC, like they do for Gtk+, Mac and W32.
-
- +++
- *** For Gtk+ version 2.4, you can make Emacs use the old file dialog
- by setting the variable `x-use-old-gtk-file-dialog' to t. Default is to use
- the new dialog.
-
** Xterm support:
---
--- 1377,1382 ----
***************
*** 1358,1364 ****
---
*** There's a new support for colors on `rxvt' terminal emulator.
! * New modes and packages in Emacs 22.1
+++
** New package benchmark.el contains simple support for convenient
--- 1421,1427 ----
---
*** There's a new support for colors on `rxvt' terminal emulator.
! * New Modes and Packages in Emacs 22.1
+++
** New package benchmark.el contains simple support for convenient
***************
*** 1631,1697 ****
+++
** The wdired.el package allows you to use normal editing commands on Dired
buffers to change filenames, permissions, etc...
-
- * Changes in specialized modes and packages:
-
- +++
- ** In Outline mode, hide-body no longer hides lines at the top
- of the file that precede the first header line.
-
- +++
- ** Telnet now prompts you for a port number with C-u M-x telnet.
---
! ** The terminal emulation code in term.el has been improved, it can
! run most curses applications now.
! +++
! ** M-x diff uses diff-mode instead of compilation-mode.
+++
! ** You can now customize fill-nobreak-predicate to control where
! filling can break lines. The value is now normally a list of
! functions, but it can also be a single function, for compatibility.
!
! We provide two sample predicates, fill-single-word-nobreak-p and
! fill-french-nobreak-p, for use in the value of fill-nobreak-predicate.
!
! ---
! ** M-x view-file and commands that use it now avoid interfering
! with special modes such as Tar mode.
---
! ** Commands winner-redo and winner-undo, from winner.el, are now bound to
! C-c <left> and C-c <right>, respectively. This is an incompatible change.
! ---
! ** global-whitespace-mode is a new alias for whitespace-global-mode.
! +++
! ** M-x compare-windows now can automatically skip non-matching text to
! resync points in both windows.
+++
! ** New user option `add-log-always-start-new-record'.
! When this option is enabled, M-x add-change-log-entry always
! starts a new record regardless of when the last record is.
+++
! ** 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
! "~/".
+++
! ** Emacs can now indicate in the mode-line the presence of new e-mail
! in a directory or in a file. See the documentation of the user option
! `display-time-mail-directory'.
---
** PO translation files are decoded according to their MIME headers
when Emacs visits them.
! ** Info mode:
+++
*** A numeric prefix argument of `info' selects an Info buffer
--- 1694,1807 ----
+++
** The wdired.el package allows you to use normal editing commands on Dired
buffers to change filenames, permissions, etc...
---
! ** The TCL package tcl-mode.el was replaced by tcl.el.
! This was actually done in Emacs-21.1, and was not documented.
! ** The new package bindat.el provides functions to unpack and pack
! binary data structures, such as network packets, to and from Lisp
! data structures.
+++
! ** The new package button.el implements simple and fast `clickable buttons'
! in emacs buffers. `buttons' are much lighter-weight than the `widgets'
! implemented by widget.el, and can be used by lisp code that doesn't
! require the full power of widgets. Emacs uses buttons for such things
! as help and apropos buffers.
---
! ** master-mode.el implements a minor mode for scrolling a slave
! buffer without leaving your current buffer, the master buffer.
! It can be used by sql.el, for example: the SQL buffer is the master
! and its SQLi buffer is the slave. This allows you to scroll the SQLi
! buffer containing the output from the SQL buffer containing the
! commands.
! This is how to use sql.el and master.el together: the variable
! sql-buffer contains the slave buffer. It is a local variable in the
! SQL buffer.
!
! (add-hook 'sql-mode-hook
! (function (lambda ()
! (master-mode t)
! (master-set-slave sql-buffer))))
! (add-hook 'sql-set-sqli-hook
! (function (lambda ()
! (master-set-slave sql-buffer))))
+++
! ** 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 `noreturn' suppresses a
! red splotch. It is an error if the argument to `noreturn' does
! return. The macro 1value suppresses a brown splotch for its argument.
! This macro is a no-op except during test-coverage -- then it signals
! an error if the argument actually returns differing values.
!
! * Changes in Specialized Modes and Packages in Emacs 22.1:
+++
! ** In Outline mode, hide-body no longer hides lines at the top
! of the file that precede the first header line.
+++
! ** Telnet now prompts you for a port number with C-u M-x telnet.
!
! ---
! ** The terminal emulation code in term.el has been improved, it can
! run most curses applications now.
!
! +++
! ** M-x diff uses diff-mode instead of compilation-mode.
!
! +++
! ** You can now customize fill-nobreak-predicate to control where
! filling can break lines. The value is now normally a list of
! functions, but it can also be a single function, for compatibility.
!
! We provide two sample predicates, fill-single-word-nobreak-p and
! fill-french-nobreak-p, for use in the value of fill-nobreak-predicate.
!
! ---
! ** M-x view-file and commands that use it now avoid interfering
! with special modes such as Tar mode.
!
! ---
! ** Commands winner-redo and winner-undo, from winner.el, are now bound to
! C-c <left> and C-c <right>, respectively. This is an incompatible change.
!
! ---
! ** global-whitespace-mode is a new alias for whitespace-global-mode.
!
! +++
! ** M-x compare-windows now can automatically skip non-matching text to
! resync points in both windows.
!
! +++
! ** New user option `add-log-always-start-new-record'.
! When this option is enabled, M-x add-change-log-entry always
! starts a new record regardless of when the last record is.
---
** PO translation files are decoded according to their MIME headers
when Emacs visits them.
! ** Info mode changes:
+++
*** A numeric prefix argument of `info' selects an Info buffer
***************
*** 1775,1781 ****
`eval-print-last-sexp' (C-j) and some edebug evaluation functions.
+++
! ** CC Mode changes.
*** Font lock support.
CC Mode now provides font lock support for all its languages. This
--- 1885,1891 ----
`eval-print-last-sexp' (C-j) and some edebug evaluation functions.
+++
! ** CC mode changes.
*** Font lock support.
CC Mode now provides font lock support for all its languages. This
***************
*** 2517,2522 ****
--- 2627,2643 ----
"checkout", "update" or "commit". That means using cvs diff options
-rBASE -rHEAD.
+ +++
+ ** 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
+ "~/".
+
+ +++
+ ** Emacs can now indicate in the mode-line the presence of new e-mail
+ in a directory or in a file. See the documentation of the user option
+ `display-time-mail-directory'.
+
** Rmail changes:
---
***************
*** 2732,2737 ****
--- 2853,2876 ----
the stroke directly to a string to insert. This is convenient for
using strokes as an input method.
+ ** Emacs server changes:
+
+ +++
+ *** You can have several Emacs servers on the same machine.
+
+ % emacs --eval '(setq server-name "foo")' -f server-start &
+ % emacs --eval '(setq server-name "bar")' -f server-start &
+ % emacsclient -s foo file1
+ % emacsclient -s bar file2
+
+ +++
+ *** The `emacsclient' command understands the options `--eval' and
+ `--display' which tell Emacs respectively to evaluate the given elisp
+ expression and to use the given display when visiting files.
+
+ +++
+ *** User option `server-mode' can be used to start a server process.
+
---
** LDAP support now defaults to ldapsearch from OpenLDAP version 2.
***************
*** 2779,2785 ****
---
** cplus-md.el has been removed to avoid problems with Custom.
! * Changes for non-free operating systems
+++
** Passing resources on the command line now works on MS Windows.
--- 2918,2924 ----
---
** cplus-md.el has been removed to avoid problems with Custom.
! * Changes in Emacs 22.1 on non-free operating systems
+++
** Passing resources on the command line now works on MS Windows.
***************
*** 2854,2864 ****
* Incompatible Lisp Changes in Emacs 22.1
+++
- ** The new interactive-specification `G' reads a file name
- much like `F', but if the input is a directory name (even defaulted),
- it returns just the directory name.
-
- +++
** `suppress-keymap' now works by remapping `self-insert-command' to
the command `undefined'. (In earlier Emacs versions, it used
`substitute-key-definition' to rebind self inserting characters to
--- 2993,2998 ----
***************
*** 2868,3028 ****
** Mode line display ignores text properties as well as the
:propertize and :eval forms in the value of a variable whose
`risky-local-variable' property is nil.
* Lisp Changes in Emacs 22.1
! ** New function `locate-file' searches for a file in a list of directories.
! `locate-file' accepts a name of a file to search (a string), and two
! lists: a list of directories to search in and a list of suffixes to
! try; typical usage might use `exec-path' and `load-path' for the list
! of directories, and `exec-suffixes' and `load-suffixes' for the list
! of suffixes. The function also accepts a predicate argument to
! further filter candidate files.
!
! One advantage of using this function is that the list of suffixes in
! `exec-suffixes' is OS-dependant, so this function will find
! executables without polluting Lisp code with OS dependancies.
+++
! ** The default value of `sentence-end' is now defined using the new
! variable `sentence-end-without-space', which contains such characters
! that end a sentence without following spaces.
!
! The function `sentence-end' should be used to obtain the value of the
! variable `sentence-end'. If the variable `sentence-end' is nil, then
! this function returns the regexp constructed from the variables
! `sentence-end-without-period', `sentence-end-double-space' and
! `sentence-end-without-space'.
+++
! ** The argument to forward-word, backward-word, forward-to-indentation
! and backward-to-indentation is now optional, and defaults to 1.
+++
! ** If a command sets transient-mark-mode to `only', that
! enables Transient Mark mode for the following command only.
! During that following command, the value of transient-mark-mode
! is `identity'. If it is still `identity' at the end of the command,
! it changes to nil.
+++
! ** The new hook `before-save-hook' is invoked by `basic-save-buffer'
! before saving buffers. This allows packages to perform various final
! tasks, for example; it can be used by the copyright package to make
! sure saved files have the current year in any copyright headers.
+++
! ** If a buffer sets buffer-save-without-query to non-nil,
! save-some-buffers will always save that buffer without asking
! (if it's modified).
!
! ---
! ** list-buffers-noselect now takes an additional argument, BUFFER-LIST.
! If it is non-nil, it specifies which buffers to list.
+++
! ** The kill-buffer-hook is now permanent-local.
+++
! ** `auto-save-file-format' has been renamed to
! `buffer-auto-save-file-format' and made into a permanent local.
+++
! ** Functions `file-name-sans-extension' and `file-name-extension' now
! ignore the leading dots in file names, so that file names such as
! `.emacs' are treated as extensionless.
+++
! ** copy-file now takes an additional option arg MUSTBENEW.
!
! This argument works like the MUSTBENEW argument of write-file.
+++
! ** If the second argument to `copy-file' is the name of a directory,
! the file is copied to that directory instead of signaling an error.
+++
! ** `visited-file-modtime' and `calendar-time-from-absolute' now return
! a list of two integers, instead of a cons.
+++
! ** `file-chase-links' now takes an optional second argument LIMIT which
! specifies the maximum number of links to chase through. If after that
! many iterations the file name obtained is still a symbolic link,
! `file-chase-links' returns it anyway.
+++
! ** The function `commandp' takes an additional optional
! argument. If it is non-nil, then `commandp' checks
! for a function that could be called with `call-interactively',
! and does not return t for keyboard macros.
+++
! ** An interactive specification can now use the code letter 'U' to get
! the up-event that was discarded in case the last key sequence read for a
! previous 'k' or 'K' argument was a down-event; otherwise nil is used.
! ---
! ** Functions y-or-n-p, read-char, read-key-sequence and the like, that
! display a prompt but don't use the minibuffer, now display the prompt
! using the text properties (esp. the face) of the prompt string.
+++
! ** read-from-minibuffer now accepts an additional argument KEEP-ALL
! saying to put all inputs in the history list, even empty ones.
+++
! ** 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.
+++
! ** The new variable `read-file-name-completion-ignore-case' specifies
! whether completion ignores case when reading a file name with the
! `read-file-name' function.
! +++
! ** 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.
+++
! ** The new variable search-spaces-regexp controls how to search
! for spaces in a regular expression. If it is non-nil, it should be a
! regular expression, and any series of spaces stands for that regular
! expression. If it is nil, spaces stand for themselves.
! Spaces inside of constructs such as [..] and *, +, ? are never
! replaced with search-spaces-regexp.
+++
! ** There are now two new regular expression operators, \_< and \_>,
! for matching the beginning and end of a symbol. A symbol is a
! non-empty sequence of either word or symbol constituent characters, as
! specified by the syntax table.
! +++
! ** skip-chars-forward and skip-chars-backward now handle
! character classes such as [:alpha:], along with individual characters
! and ranges.
---
! ** In `replace-match', the replacement text no longer inherits
! properties from surrounding text.
! +++
! ** The list returned by `(match-data t)' now has the buffer as a final
! element, if the last match was on a buffer. `set-match-data'
! accepts such a list for restoring the match state.
+++
! ** Variable aliases have been implemented:
*** defvaralias ALIAS-VAR BASE-VAR [DOCSTRING]
--- 3002,3146 ----
** Mode line display ignores text properties as well as the
:propertize and :eval forms in the value of a variable whose
`risky-local-variable' property is nil.
+
+ ---
+ ** Support for Mocklisp has been removed.
* Lisp Changes in Emacs 22.1
! ** General Lisp changes:
+++
! *** The function `eql' is now available without requiring the CL package.
+++
! *** `makehash' is now obsolete. Use `make-hash-table' instead.
+++
! *** If optional third argument APPEND to `add-to-list' is non-nil, a
! new element gets added at the end of the list instead of at the
! beginning. This change actually occurred in Emacs-21.1, but was not
! documented.
+++
! *** New function `copy-tree' makes a copy of a tree, recursively copying
! both cars and cdrs.
+++
! *** New function `delete-dups' destructively removes `equal'
! duplicates from a list. Of several `equal' occurrences of an element
! in the list, the first one is kept.
+++
! *** `declare' is now a macro. This change was made mostly for
! documentation purposes and should have no real effect on Lisp code.
+++
! *** The new function `rassq-delete-all' deletes all elements from an
! alist whose cdr is `eq' to a specified value.
+++
! *** The function `number-sequence' returns a list of equally-separated
! numbers. For instance, (number-sequence 4 9) returns (4 5 6 7 8 9).
! By default, the separation is 1, but you can specify a different separation
! as the third argument. (number-sequence 1.5 6 2) returns (1.5 3.5 5.5).
+++
! *** The variables `most-positive-fixnum' and `most-negative-fixnum'
! hold the largest and smallest possible integer values.
+++
! *** The flags, width, and precision options for %-specifications in function
! `format' are now documented. Some flags that were accepted but not
! implemented (such as "*") are no longer accepted.
+++
! *** Functions `get' and `plist-get' no longer signals an error for
! a malformed property list. They also detect cyclic lists.
+++
! *** The new functions `lax-plist-get' and `lax-plist-put' are like
! `plist-get' and `plist-put', except that they compare the property
! name using `equal' rather than `eq'.
+++
! *** The new variable `print-continuous-numbering', when non-nil, says
! that successive calls to print functions should use the same
! numberings for circular structure references. This is only relevant
! when `print-circle' is non-nil.
!
! When you bind `print-continuous-numbering' to t, you should
! also bind `print-number-table' to nil.
+++
! *** New function `macroexpand-all' expands all macros in a form.
! It is similar to the Common-Lisp function of the same name.
! One difference is that it guarantees to return the original argument
! if no expansion is done, which can be tested using `eq'.
+++
! *** The function `atan' now accepts an optional second argument.
!
! When called with 2 arguments, as in `(atan Y X)', `atan' returns the
! angle in radians between the vector [X, Y] and the X axis. (This is
! equivalent to the standard C library function `atan2'.)
+++
! *** A function's doc string can now specify the calling pattern.
! You put this in the doc string's last line, which should match the
! regexp "\n\n(fn.*)\\'".
+++
! *** New macro `with-local-quit' temporarily sets `inhibit-quit' to nil.
! This is for use around potentially blocking or long-running code in
! timers and `post-command-hook' functions.
!
! *** `define-obsolete-function-alias'
! combines `defalias' and `make-obsolete'.
+++
! *** 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 unknown function, alters global variable,
! etc).
! ** Lisp code indentation features:
+++
! *** The `defmacro' form can 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
! (defmacro NAME LAMBDA-LIST [DOC-STRING] [DECLARATION ...] ...)
!
! 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.
---
! *** cl-indent now allows customization of Indentation of backquoted forms.
! See the new user option `lisp-backquote-indentation'.
!
! ---
! *** cl-indent now handles indentation of simple and extended `loop' forms.
!
! The new user options `lisp-loop-keyword-indentation',
! `lisp-loop-forms-indentation', and `lisp-simple-loop-indentation' can
! be used to customize the indentation of keywords and forms in loop
! forms.
+++
! ** Variable aliases:
*** defvaralias ALIAS-VAR BASE-VAR [DOCSTRING]
***************
*** 3044,3214 ****
variables, including buffer-local and frame-local variables.
+++
! *** The macro define-obsolete-variable-alias combines defvaralias and
! make-obsolete-variable. The macro define-obsolete-function-alias
! combines defalias and make-obsolete.
! +++
! ** Enhancements to keymaps.
! *** Cleaner way to enter key sequences.
! You can enter a constant key sequence in a more natural format, the
! same one used for saving keyboard macros, using the macro `kbd'. For
! example,
! (kbd "C-x C-f") => "\^x\^f"
! *** Interactive commands can be remapped through keymaps.
! This is an alternative to using defadvice or substitute-key-definition
! to modify the behavior of a key binding using the normal keymap
! 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.
! Example:
! Suppose that minor mode my-mode has defined the commands
! my-kill-line and my-kill-word, and it wants C-k (and any other key
! bound to kill-line) to run the command my-kill-line instead of
! kill-line, and likewise it wants to run my-kill-word instead of
! kill-word.
! Instead of rebinding C-k and the other keys in the minor mode map,
! command remapping allows you to directly map kill-line into
! my-kill-line and kill-word into my-kill-word through the minor mode
! map using define-key:
! (define-key my-mode-map [remap kill-line] 'my-kill-line)
! (define-key my-mode-map [remap kill-word] 'my-kill-word)
! Now, when my-mode is enabled, and the user enters C-k or M-d,
! the commands my-kill-line and my-kill-word are run.
! Notice that only one level of remapping is supported. In the above
! example, this means that if my-kill-line is remapped to other-kill,
! then C-k still runs my-kill-line.
! The following changes have been made to provide command remapping:
! - Command remappings are defined using `define-key' with a prefix-key
! `remap', i.e. `(define-key MAP [remap CMD] DEF)' remaps command CMD
! to definition DEF in keymap MAP. The definition is not limited to
! another command; it can be anything accepted for a normal binding.
! - The new function `command-remapping' returns the binding for a
! remapped command in the current keymaps, or nil if not remapped.
! - key-binding now remaps interactive commands unless the optional
! third argument NO-REMAP is non-nil.
! - where-is-internal now returns nil for a remapped command (e.g.
! kill-line if my-mode is enabled), and the actual key binding for
! the command it is remapped to (e.g. C-k for my-kill-line).
! It also has a new optional fifth argument, NO-REMAP, which inhibits
! remapping if non-nil (e.g. it returns C-k for kill-line and
! <kill-line> for my-kill-line).
! - The new variable `this-original-command' contains the original
! command before remapping. It is equal to `this-command' when the
! command was not remapped.
! *** If text has a `keymap' property, that keymap takes precedence
! over minor mode keymaps.
! *** The `keymap' property now also works at the ends of overlays and
! text-properties, according to their stickiness. This also means that it
! works with empty overlays. The same hold for the `local-map' property.
! *** Dense keymaps now handle inheritance correctly.
! Previously a dense keymap would hide all of the simple-char key
! bindings of the parent keymap.
! *** `define-key-after' now accepts keys longer than 1.
! *** New function `current-active-maps' returns a list of currently
! active keymaps.
! *** New function `describe-buffer-bindings' inserts the list of all
! defined keys and their definitions.
! *** New function `keymap-prompt' returns the prompt-string of a keymap
! *** (map-keymap FUNCTION KEYMAP) applies the function to each binding
! in the keymap.
! *** New variable emulation-mode-map-alists.
! Lisp packages using many minor mode keymaps can now maintain their own
! keymap alist separate from minor-mode-map-alist by adding their keymap
! alist to this list.
+++
! ** Atomic change groups.
! To perform some changes in the current buffer "atomically" so that
! they either all succeed or are all undone, use `atomic-change-group'
! around the code that makes changes. For instance:
! (atomic-change-group
! (insert foo)
! (delete-region x y))
! If an error (or other nonlocal exit) occurs inside the body of
! `atomic-change-group', it unmakes all the changes in that buffer that
! were during the execution of the body. The change group has no effect
! on any other buffers--any such changes remain.
! If you need something more sophisticated, you can directly call the
! lower-level functions that `atomic-change-group' uses. Here is how.
! To set up a change group for one buffer, call `prepare-change-group'.
! Specify the buffer as argument; it defaults to the current buffer.
! This function returns a "handle" for the change group. You must save
! the handle to activate the change group and then finish it.
! Before you change the buffer again, you must activate the change
! group. Pass the handle to `activate-change-group' afterward to
! do this.
! After you make the changes, you must finish the change group. You can
! either accept the changes or cancel them all. Call
! `accept-change-group' to accept the changes in the group as final;
! call `cancel-change-group' to undo them all.
! You should use `unwind-protect' to make sure the group is always
! finished. The call to `activate-change-group' should be inside the
! `unwind-protect', in case the user types C-g just after it runs.
! (This is one reason why `prepare-change-group' and
! `activate-change-group' are separate functions.) Once you finish the
! group, don't use the handle again--don't try to finish the same group
! twice.
! To make a multibuffer change group, call `prepare-change-group' once
! for each buffer you want to cover, then use `nconc' to combine the
! returned values, like this:
! (nconc (prepare-change-group buffer-1)
! (prepare-change-group buffer-2))
! You can then activate the multibuffer change group with a single call
! to `activate-change-group', and finish it with a single call to
! `accept-change-group' or `cancel-change-group'.
! Nested use of several change groups for the same buffer works as you
! would expect. Non-nested use of change groups for the same buffer
! will lead to undesirable results, so don't let it happen; the first
! change group you start for any given buffer should be the last one
! finished.
+++
! ** Progress reporters.
! The new functions `make-progress-reporter', `progress-reporter-update',
! `progress-reporter-force-update', `progress-reporter-done', and
! `dotimes-with-progress-reporter' provide a simple and efficient way for
! a command to present progress messages for the user.
+++
** New `yank-handler' text property can be used to control how
--- 3162,3410 ----
variables, including buffer-local and frame-local variables.
+++
! *** The macro `define-obsolete-variable-alias' combines `defvaralias' and
! `make-obsolete-variable'.
! ** defcustom changes:
! +++
! *** defcustom and other custom declarations now use a default group
! (the last prior group defined in the same file) when no :group was given.
! ---
! *** The new customization type `float' specifies numbers with floating
! point (no integers are allowed).
! ** String changes:
! +++
! *** The escape sequence \s is now interpreted as a SPACE character,
! unless it is followed by a `-' in a character constant (e.g. ?\s-A),
! in which case it is still interpreted as the super modifier.
! In strings, \s is always interpreted as a space.
! +++
! *** A hex escape in a string forces the string to be multibyte.
! An octal escape makes it unibyte.
! +++
! *** `split-string' now includes null substrings in the returned list if
! the optional argument SEPARATORS is non-nil and there are matches for
! SEPARATORS at the beginning or end of the string. If SEPARATORS is
! nil, or if the new optional third argument OMIT-NULLS is non-nil, all
! empty matches are omitted from the returned list.
! +++
! *** New function `string-to-multibyte' converts a unibyte string to a
! multibyte string with the same individual character codes.
! +++
! *** New function `substring-no-properties returns a substring without
! text properties.
! +++
! *** The new function `assoc-string' replaces `assoc-ignore-case' and
! `assoc-ignore-representation', which are still available, but have
! been declared obsolete.
! ** Buffer/variable changes:
! +++
! *** The new function `buffer-local-value' returns the buffer-local
! binding of VARIABLE (a symbol) in buffer BUFFER. If VARIABLE does not
! have a buffer-local binding in buffer BUFFER, it returns the default
! value of VARIABLE instead.
! +++
! ** There is a new facility for displaying warnings to the user.
! See the functions `warn' and `display-warning' .
! +++
! ** Progress reporters.
! These provide a simple and uniform way for commands to present
! progress messages for the user.
! See the new functions `make-progress-reporter',
! `progress-reporter-update', `progress-reporter-force-update',
! `progress-reporter-done', and `dotimes-with-progress-reporter'.
! ** Buffer positions:
! +++
! *** Function `compute-motion' now calculates the usable window
! width if the WIDTH argument is nil. If the TOPOS argument is nil,
! the usable window height and width is used.
! +++
! *** The `line-move', `scroll-up', and `scroll-down' functions will now
! modify the window vscroll to scroll through display rows that are
! taller that the height of the window, for example in the presense of
! large images. To disable this feature, Lisp code can bind the new
! variable `auto-window-vscroll' to nil.
! +++
! *** The argument to `forward-word', `backward-word',
! `forward-to-indentation' and `backward-to-indentation' is now
! optional, and defaults to 1.
! +++
! *** Lisp code can now test if a given buffer position is inside a
! clickable link with the new function `mouse-on-link-p'. This is the
! function used by the new `mouse-1-click-follows-link' functionality.
! +++
! *** New function `line-number-at-pos' returns the line number of the
! current line in the current buffer, or if optional buffer position is
! given, line number of corresponding line in current buffer.
! +++
! *** `field-beginning' and `field-end' now accept an additional optional
! argument, LIMIT.
! +++
! *** Function `pos-visible-in-window-p' now returns the pixel coordinates
! and partial visiblity state of the corresponding row, if the PARTIALLY
! arg is non-nil.
! +++
! *** New functions `posn-at-point' and `posn-at-x-y' return
! click-event-style position information for a given visible buffer
! position or for a given window pixel coordinate.
! ** Text modification:
! +++
! *** The new function `insert-buffer-substring-as-yank' works like
! `insert-buffer-substring', but removes the text properties in the
! `yank-excluded-properties' list.
+++
! *** The new function `insert-buffer-substring-no-properties' is like
! insert-buffer-substring, but removes all text properties from the
! inserted substring.
! +++
! *** The new function `filter-buffer-substring' extracts a buffer
! substring, passes it through a set of filter functions, and returns
! the filtered substring. It is used instead of `buffer-substring' or
! `delete-and-extract-region' when copying text into a user-accessible
! data structure, like the kill-ring, X clipboard, or a register. The
! list of filter function is specified by the new variable
! `buffer-substring-filters'. For example, Longlines mode uses
! `buffer-substring-filters' to remove soft newlines from the copied
! text.
! +++
! *** Function `translate-region' accepts also a char-table as TABLE
! argument.
! +++
! *** The new translation table `translation-table-for-input'
! is used for customizing self-insertion. The character to
! be inserted is translated through it.
! ---
! *** Text clones.
! The new function `text-clone-create'. Text clones are chunks of text
! that are kept identical by transparently propagating changes from one
! clone to the other.
! ---
! *** The function `insert-string' is now obsolete.
! ** Syntax table changes:
! +++
! *** The macro `with-syntax-table' does not copy the table any more.
! +++
! *** The new function `syntax-after' returns the syntax code
! of the character after a specified buffer position, taking account
! of text properties as well as the character code.
! +++
! *** `syntax-class' extracts the class of a syntax code (as returned
! by syntax-after).
! *** The new package `syntax.el' provides an efficient way to find the
! current syntactic context (as returned by `parse-partial-sexp').
! ** GC changes:
+++
! *** New variables `gc-elapsed' and `gcs-done' provide extra information
! on garbage collection.
!
! +++
! *** Functions from `post-gc-hook' are run at the end of garbage
! collection. The hook is run with GC inhibited, so use it with care.
!
! ** Buffer-related changes:
!
! ---
! *** `list-buffers-noselect' now takes an additional argument, BUFFER-LIST.
! If it is non-nil, it specifies which buffers to list.
!
! +++
! *** `kill-buffer-hook' is now a permanent local.
!
! ** Local variables lists:
!
! +++
! *** Text properties in local variables.
!
! A file local variables list cannot specify a string with text
! properties--any specified text properties are discarded.
!
! +++
! *** 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
! needed.
!
! ---
! *** 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.
!
! ** Abbrev changes:
!
! *** The new function copy-abbrev-table returns a new abbrev table that
! is a copy of a given abbrev table.
!
! +++
! *** define-abbrev now accepts an optional argument SYSTEM-FLAG. If
! non-nil, this marks the abbrev as a "system" abbrev, which means that
! it won't be stored in the user's abbrevs file if he saves the abbrevs.
! Major modes that predefine some abbrevs should always specify this
! flag.
!
! ** Undo changes:
!
! +++
! *** An element of buffer-undo-list can now have the form (apply FUNNAME
! . ARGS), where FUNNAME is a symbol other than t or nil. That stands
! for a high-level change that should be undone by evaluating (apply
! FUNNAME ARGS).
!
! These entries can also have the form (apply DELTA BEG END FUNNAME . ARGS)
! which indicates that the change which took place was limited to the
! range BEG...END and increased the buffer size by DELTA.
!
! +++
! *** If the buffer's undo list for the current command gets longer than
! undo-outer-limit, garbage collection empties it. This is to prevent
! it from using up the available memory and choking Emacs.
+++
** New `yank-handler' text property can be used to control how
***************
*** 3258,3283 ****
However, the insertion of the text can be modified by a `yank-handler'
text property.
+++
! ** An element of buffer-undo-list can now have the form (apply FUNNAME
! . ARGS), where FUNNAME is a symbol other than t or nil. That stands
! for a high-level change that should be undone by evaluating (apply
! FUNNAME ARGS).
! These entries can also have the form (apply DELTA BEG END FUNNAME . ARGS)
! which indicates that the change which took place was limited to the
! range BEG...END and increased the buffer size by DELTA.
+++
! ** If the buffer's undo list for the current command gets longer than
! undo-outer-limit, garbage collection empties it. This is to prevent
! it from using up the available memory and choking Emacs.
+++
! ** Enhancements to process support
! *** Function list-processes now has an optional argument; if non-nil,
! only the processes whose query-on-exit flag is set are listed.
*** New set-process-query-on-exit-flag and process-query-on-exit-flag
functions. The existing process-kill-without-query function is still
--- 3454,3814 ----
However, the insertion of the text can be modified by a `yank-handler'
text property.
+ ** File operation changes:
+
+++
! *** New vars `exec-suffixes' and `load-suffixes' used when
! searching for an executable resp. an elisp file.
! +++
! *** The new primitive `set-file-times' sets a file's access and
! modification times. Magic file name handlers can handle this
! operation.
+++
! *** 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).
! The value in that case is an identifier for the remote file system.
+++
! *** `auto-save-file-format' has been renamed to
! `buffer-auto-save-file-format' and made into a permanent local.
! +++
! *** Functions `file-name-sans-extension' and `file-name-extension' now
! ignore the leading dots in file names, so that file names such as
! `.emacs' are treated as extensionless.
!
! +++
! *** copy-file now takes an additional option arg MUSTBENEW.
!
! This argument works like the MUSTBENEW argument of write-file.
!
! +++
! *** If the second argument to `copy-file' is the name of a directory,
! the file is copied to that directory instead of signaling an error.
!
! +++
! *** `visited-file-modtime' and `calendar-time-from-absolute' now return
! a list of two integers, instead of a cons.
!
! +++
! *** `file-chase-links' now takes an optional second argument LIMIT which
! specifies the maximum number of links to chase through. If after that
! many iterations the file name obtained is still a symbolic link,
! `file-chase-links' returns it anyway.
!
! +++
! *** The new hook `before-save-hook' is invoked by `basic-save-buffer'
! before saving buffers. This allows packages to perform various final
! tasks, for example; it can be used by the copyright package to make
! sure saved files have the current year in any copyright headers.
!
! +++
! *** If a buffer sets buffer-save-without-query to non-nil,
! save-some-buffers will always save that buffer without asking
! (if it's modified).
!
! *** New function `locate-file' searches for a file in a list of directories.
! `locate-file' accepts a name of a file to search (a string), and two
! lists: a list of directories to search in and a list of suffixes to
! try; typical usage might use `exec-path' and `load-path' for the list
! of directories, and `exec-suffixes' and `load-suffixes' for the list
! of suffixes. The function also accepts a predicate argument to
! further filter candidate files.
!
! One advantage of using this function is that the list of suffixes in
! `exec-suffixes' is OS-dependant, so this function will find
! executables without polluting Lisp code with OS dependancies.
!
! ---
! *** The precedence of file-name-handlers has been changed.
! Instead of blindly choosing the first handler that matches,
! find-file-name-handler now gives precedence to a file-name handler
! that matches near the end of the file name. More specifically, the
! handler whose (match-beginning 0) is the largest is chosen.
! In case of ties, the old "first matched" rule applies.
!
! +++
! *** A file name handler can declare which operations it handles.
!
! You do this by putting an `operation' property on the handler name
! symbol. The property value should be a list of the operations that
! the handler really handles. It won't be called for any other
! operations.
!
! This is useful for autoloaded handlers, to prevent them from being
! autoloaded when not really necessary.
!
! ** Input changes:
!
! +++
! *** An interactive specification can now use the code letter 'U' to get
! the up-event that was discarded in case the last key sequence read for a
! previous 'k' or 'K' argument was a down-event; otherwise nil is used.
!
! +++
! *** The new interactive-specification `G' reads a file name
! much like `F', but if the input is a directory name (even defaulted),
! it returns just the directory name.
!
! ---
! *** Functions y-or-n-p, read-char, read-key-sequence and the like, that
! display a prompt but don't use the minibuffer, now display the prompt
! using the text properties (esp. the face) of the prompt string.
!
! +++
! *** (while-no-input BODY...) runs BODY, but only so long as no input
! arrives. If the user types or clicks anything, BODY stops as if a
! quit had occurred. while-no-input returns the value of BODY, if BODY
! finishes. It returns nil if BODY was aborted.
!
! ** Minibuffer changes:
!
! *** 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.
!
! +++
! *** New function minibuffer-selected-window returns the window which
! was selected when entering the minibuffer.
!
! +++
! *** read-from-minibuffer now accepts an additional argument KEEP-ALL
! saying to put all inputs in the history list, even empty ones.
!
! +++
! *** 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.
!
! +++
! *** The new variable `read-file-name-completion-ignore-case' specifies
! whether completion ignores case when reading a file name with the
! `read-file-name' function.
!
! +++
! *** 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.
!
! ** Searching and matching changes:
!
! +++
! *** New function `looking-back' checks whether a regular expression matches
! the text before point. Specifying the LIMIT argument bounds how far
! back the match can start; this is a way to keep it from taking too long.
!
! +++
! *** The new variable search-spaces-regexp controls how to search
! for spaces in a regular expression. If it is non-nil, it should be a
! regular expression, and any series of spaces stands for that regular
! expression. If it is nil, spaces stand for themselves.
!
! Spaces inside of constructs such as [..] and *, +, ? are never
! replaced with search-spaces-regexp.
!
! +++
! *** There are now two new regular expression operators, \_< and \_>,
! for matching the beginning and end of a symbol. A symbol is a
! non-empty sequence of either word or symbol constituent characters, as
! specified by the syntax table.
!
! +++
! *** skip-chars-forward and skip-chars-backward now handle
! character classes such as [:alpha:], along with individual characters
! and ranges.
!
! ---
! *** In `replace-match', the replacement text no longer inherits
! properties from surrounding text.
!
! +++
! *** The list returned by `(match-data t)' now has the buffer as a final
! element, if the last match was on a buffer. `set-match-data'
! accepts such a list for restoring the match state.
!
! ---
! *** rx.el has new corresponding `symbol-end' and `symbol-start' elements.
!
! +++
! *** The default value of `sentence-end' is now defined using the new
! variable `sentence-end-without-space', which contains such characters
! that end a sentence without following spaces.
!
! The function `sentence-end' should be used to obtain the value of the
! variable `sentence-end'. If the variable `sentence-end' is nil, then
! this function returns the regexp constructed from the variables
! `sentence-end-without-period', `sentence-end-double-space' and
! `sentence-end-without-space'.
!
! +++
! ** Enhancements to keymaps.
!
! *** Cleaner way to enter key sequences.
!
! You can enter a constant key sequence in a more natural format, the
! same one used for saving keyboard macros, using the macro `kbd'. For
! example,
!
! (kbd "C-x C-f") => "\^x\^f"
!
! *** Interactive commands can be remapped through keymaps.
!
! This is an alternative to using defadvice or substitute-key-definition
! to modify the behavior of a key binding using the normal keymap
! 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.
!
! Example:
! Suppose that minor mode my-mode has defined the commands
! my-kill-line and my-kill-word, and it wants C-k (and any other key
! bound to kill-line) to run the command my-kill-line instead of
! kill-line, and likewise it wants to run my-kill-word instead of
! kill-word.
!
! Instead of rebinding C-k and the other keys in the minor mode map,
! command remapping allows you to directly map kill-line into
! my-kill-line and kill-word into my-kill-word through the minor mode
! map using define-key:
!
! (define-key my-mode-map [remap kill-line] 'my-kill-line)
! (define-key my-mode-map [remap kill-word] 'my-kill-word)
!
! Now, when my-mode is enabled, and the user enters C-k or M-d,
! the commands my-kill-line and my-kill-word are run.
!
! Notice that only one level of remapping is supported. In the above
! example, this means that if my-kill-line is remapped to other-kill,
! then C-k still runs my-kill-line.
!
! The following changes have been made to provide command remapping:
!
! - Command remappings are defined using `define-key' with a prefix-key
! `remap', i.e. `(define-key MAP [remap CMD] DEF)' remaps command CMD
! to definition DEF in keymap MAP. The definition is not limited to
! another command; it can be anything accepted for a normal binding.
!
! - The new function `command-remapping' returns the binding for a
! remapped command in the current keymaps, or nil if not remapped.
!
! - key-binding now remaps interactive commands unless the optional
! third argument NO-REMAP is non-nil.
!
! - where-is-internal now returns nil for a remapped command (e.g.
! kill-line if my-mode is enabled), and the actual key binding for
! the command it is remapped to (e.g. C-k for my-kill-line).
! It also has a new optional fifth argument, NO-REMAP, which inhibits
! remapping if non-nil (e.g. it returns C-k for kill-line and
! <kill-line> for my-kill-line).
!
! - The new variable `this-original-command' contains the original
! command before remapping. It is equal to `this-command' when the
! command was not remapped.
!
! *** If text has a `keymap' property, that keymap takes precedence
! over minor mode keymaps.
!
! *** The `keymap' property now also works at the ends of overlays and
! text-properties, according to their stickiness. This also means that it
! works with empty overlays. The same hold for the `local-map' property.
!
! *** Dense keymaps now handle inheritance correctly.
! Previously a dense keymap would hide all of the simple-char key
! bindings of the parent keymap.
!
! *** `define-key-after' now accepts keys longer than 1.
!
! *** New function `current-active-maps' returns a list of currently
! active keymaps.
!
! *** New function `describe-buffer-bindings' inserts the list of all
! defined keys and their definitions.
!
! *** New function `keymap-prompt' returns the prompt-string of a keymap
!
! *** (map-keymap FUNCTION KEYMAP) applies the function to each binding
! in the keymap.
!
! *** New variable emulation-mode-map-alists.
!
! Lisp packages using many minor mode keymaps can now maintain their own
! keymap alist separate from minor-mode-map-alist by adding their keymap
! alist to this list.
!
! +++
! ** Atomic change groups.
!
! To perform some changes in the current buffer "atomically" so that
! they either all succeed or are all undone, use `atomic-change-group'
! around the code that makes changes. For instance:
!
! (atomic-change-group
! (insert foo)
! (delete-region x y))
!
! If an error (or other nonlocal exit) occurs inside the body of
! `atomic-change-group', it unmakes all the changes in that buffer that
! were during the execution of the body. The change group has no effect
! on any other buffers--any such changes remain.
!
! If you need something more sophisticated, you can directly call the
! lower-level functions that `atomic-change-group' uses. Here is how.
!
! To set up a change group for one buffer, call `prepare-change-group'.
! Specify the buffer as argument; it defaults to the current buffer.
! This function returns a "handle" for the change group. You must save
! the handle to activate the change group and then finish it.
!
! Before you change the buffer again, you must activate the change
! group. Pass the handle to `activate-change-group' afterward to
! do this.
!
! After you make the changes, you must finish the change group. You can
! either accept the changes or cancel them all. Call
! `accept-change-group' to accept the changes in the group as final;
! call `cancel-change-group' to undo them all.
!
! You should use `unwind-protect' to make sure the group is always
! finished. The call to `activate-change-group' should be inside the
! `unwind-protect', in case the user types C-g just after it runs.
! (This is one reason why `prepare-change-group' and
! `activate-change-group' are separate functions.) Once you finish the
! group, don't use the handle again--don't try to finish the same group
! twice.
!
! To make a multibuffer change group, call `prepare-change-group' once
! for each buffer you want to cover, then use `nconc' to combine the
! returned values, like this:
!
! (nconc (prepare-change-group buffer-1)
! (prepare-change-group buffer-2))
!
! You can then activate the multibuffer change group with a single call
! to `activate-change-group', and finish it with a single call to
! `accept-change-group' or `cancel-change-group'.
!
! Nested use of several change groups for the same buffer works as you
! would expect. Non-nested use of change groups for the same buffer
! will lead to undesirable results, so don't let it happen; the first
! change group you start for any given buffer should be the last one
! finished.
!
! +++
! ** Enhancements to process support
!
! *** Function list-processes now has an optional argument; if non-nil,
! only the processes whose query-on-exit flag is set are listed.
*** New set-process-query-on-exit-flag and process-query-on-exit-flag
functions. The existing process-kill-without-query function is still
***************
*** 3312,3336 ****
from such processes, to allowing them to produce more output before
emacs tries to read it.
! *** The new function `call-process-shell-command' executes a shell
! command command synchronously in a separate process.
*** The new function `process-file' is similar to `call-process', but
obeys file handlers. The file handler is chosen based on
! default-directory.
!
! *** The new function `set-process-filter-multibyte' sets the
! multibyteness of a string given to a process's filter.
!
! *** The new function `process-filter-multibyte-p' returns t if a
! string given to a process's filter is multibyte.
*** A filter function of a process is called with a multibyte string
if the filter's multibyteness is t. That multibyteness is decided by
the value of `default-enable-multibyte-characters' when the process is
created and can be changed later by `set-process-filter-multibyte'.
! *** If a process's coding system is raw-text or no-conversion and its
buffer is multibyte, the output of the process is at first converted
to multibyte by `string-to-multibyte' then inserted in the buffer.
Previously, it was converted to multibyte by `string-as-multibyte',
--- 3843,3869 ----
from such processes, to allowing them to produce more output before
emacs tries to read it.
! *** The new function `call-process-shell-command'.
!
! This executes a shell command command synchronously in a separate
! process.
*** The new function `process-file' is similar to `call-process', but
obeys file handlers. The file handler is chosen based on
! `default-directory'.
*** A filter function of a process is called with a multibyte string
if the filter's multibyteness is t. That multibyteness is decided by
the value of `default-enable-multibyte-characters' when the process is
created and can be changed later by `set-process-filter-multibyte'.
! *** The new function `set-process-filter-multibyte' sets the
! multibyteness of the strings passed to the process's filter.
!
! *** The new function `process-filter-multibyte-p' returns the
! multibyteness of the strings passed to the process's filter.
!
! *** If a process's coding system is `raw-text' or `no-conversion' and its
buffer is multibyte, the output of the process is at first converted
to multibyte by `string-to-multibyte' then inserted in the buffer.
Previously, it was converted to multibyte by `string-as-multibyte',
***************
*** 3415,3445 ****
sentinel when the connection is closed by the remote peer has been
changed to "connection broken by remote peer".
! +++
! ** New function `force-window-update' can initiate a full redisplay of
! one or all windows. Normally, this is not needed as changes in window
! contents are detected automatically. However, certain implicit
! changes to mode lines, header lines, or display properties may require
! forcing an explicit window update.
+++
! ** The line-move, scroll-up, and scroll-down functions will now
! modify the window vscroll to scroll through display rows that are
! taller that the height of the window, for example in the presense of
! large images. To disable this feature, Lisp code can bind the new
! variable `auto-window-vscroll' to nil.
! +++
! ** Function `compute-motion' now calculates the usable window
! width if the WIDTH argument is nil. If the TOPOS argument is nil,
! the usable window height and width is used.
+++
! ** Function pos-visible-in-window-p now returns the pixel coordinates
! and partial visiblity state of the corresponding row, if the PARTIALLY
! arg is non-nil.
! ** Changes in using window objects:
+++
*** You can now make a window as short as one line.
--- 3948,3966 ----
sentinel when the connection is closed by the remote peer has been
changed to "connection broken by remote peer".
! ** Using window objects:
+++
! *** New function `window-body-height'.
! This is like `window-height' but does not count the mode line or the
! header line.
+++
! *** New function `window-body-height'.
! This is like window-height but does not count the mode line
! or the header line.
+++
*** You can now make a window as short as one line.
***************
*** 3462,3472 ****
+++
*** The new macro `with-selected-window' temporarily switches the
! selected window without impacting the order of buffer-list.
+++
! *** `select-window' takes an optional second argument `norecord', like
! `switch-to-buffer'.
+++
*** `save-selected-window' now saves and restores the selected window
--- 3983,3994 ----
+++
*** The new macro `with-selected-window' temporarily switches the
! selected window without impacting the order of `buffer-list'.
+++
! *** `select-window' takes an optional second argument `norecord'.
!
! This is like `switch-to-buffer'.
+++
*** `save-selected-window' now saves and restores the selected window
***************
*** 3474,3505 ****
by calling `select-window'.
+++
! *** The function `set-window-buffer' now has an optional third argument
! KEEP-MARGINS which will preserve the window's current margin, fringe,
! and scroll-bar settings if non-nil.
+++
** Customizable fringe bitmaps
! *** New function 'define-fringe-bitmap' can now be used to create new
fringe bitmaps, as well as change the built-in fringe bitmaps.
To change a built-in bitmap, do (require 'fringe) and use the symbol
identifing the bitmap such as `left-truncation or `continued-line'.
! *** New function 'destroy-fringe-bitmap' can be used to destroy a
! previously created bitmap, or restore a built-in bitmap.
! *** New function 'set-fringe-bitmap-face' can now be used to set a
specific face to be used for a specific fringe bitmap. The face is
automatically merged with the `fringe' face, so normally, the face
should only specify the foreground color of the bitmap.
! *** There are new display properties, left-fringe and right-fringe,
that can be used to show a specific bitmap in the left or right fringe
bitmap of the display line.
! Format is 'display '(left-fringe BITMAP [FACE]), where BITMAP is a
symbol identifying a fringe bitmap, either built-in or defined with
`define-fringe-bitmap', and FACE is an optional face name to be used
for displaying the bitmap instead of the default `fringe' face.
--- 3996,4028 ----
by calling `select-window'.
+++
! *** `set-window-buffer' has an optional argument KEEP-MARGINS.
!
! If non-nil, that says to preserve the window's current margin, fringe,
! and scroll-bar settings.
+++
** Customizable fringe bitmaps
! *** New function `define-fringe-bitmap' can now be used to create new
fringe bitmaps, as well as change the built-in fringe bitmaps.
To change a built-in bitmap, do (require 'fringe) and use the symbol
identifing the bitmap such as `left-truncation or `continued-line'.
! *** New function `destroy-fringe-bitmap' deletes a fringe bitmap
! or restores a built-in one to its default value.
! *** New function `set-fringe-bitmap-face' can now be used to set a
specific face to be used for a specific fringe bitmap. The face is
automatically merged with the `fringe' face, so normally, the face
should only specify the foreground color of the bitmap.
! *** There are new display properties, `left-fringe; and `right-fringe',
that can be used to show a specific bitmap in the left or right fringe
bitmap of the display line.
! Format is `display (left-fringe BITMAP [FACE])', where BITMAP is a
symbol identifying a fringe bitmap, either built-in or defined with
`define-fringe-bitmap', and FACE is an optional face name to be used
for displaying the bitmap instead of the default `fringe' face.
***************
*** 3508,3515 ****
*** New function `fringe-bitmaps-at-pos' returns the current fringe
bitmaps in the display line at a given buffer position.
+++
! ** Controlling the default left and right fringe widths.
The default left and right fringe widths for all windows of a frame
can now be controlled by setting the `left-fringe' and `right-fringe'
--- 4031,4040 ----
*** New function `fringe-bitmaps-at-pos' returns the current fringe
bitmaps in the display line at a given buffer position.
+ ** Other window fringe features:
+
+++
! *** Controlling the default left and right fringe widths.
The default left and right fringe widths for all windows of a frame
can now be controlled by setting the `left-fringe' and `right-fringe'
***************
*** 3529,3537 ****
fringe bitmaps is 8 pixels.
+++
! ** Per-window fringe and scrollbar settings
! *** Windows can now have their own individual fringe widths and
position settings.
To control the fringe widths of a window, either set the buffer-local
--- 4054,4062 ----
fringe bitmaps is 8 pixels.
+++
! *** Per-window fringe and scrollbar settings
! **** Windows can now have their own individual fringe widths and
position settings.
To control the fringe widths of a window, either set the buffer-local
***************
*** 3549,3843 ****
displaying the buffer in a window, or use `set-window-buffer' to force
an update of the display margins.
! *** Windows can now have their own individual scroll-bar settings
controlling the width and position of scroll-bars.
! To control the scroll-bar of a window, either set the buffer-local
! variables `scroll-bar-mode' and `scroll-bar-width', or call
! `set-window-scroll-bars'. The function `window-scroll-bars' can be
! used to obtain the current settings. To make `scroll-bar-mode' and
! `scroll-bar-width' take effect, you must set them before displaying
! the buffer in a window, or use `set-window-buffer' to force an update
! of the display margins.
!
! +++
! ** When using non-toolkit scroll bars with the default width,
! the scroll-bar-width frame parameter value is nil.
!
! +++
! ** Multiple overlay arrows can now be defined and managed via the new
! variable `overlay-arrow-variable-list'. It contains a list of
! varibles which contain overlay arrow position markers, including
! the original `overlay-arrow-position' variable.
!
! Each variable on this list can have individual `overlay-arrow-string'
! and `overlay-arrow-bitmap' properties that specify an overlay arrow
! string (for non-window terminals) or fringe bitmap (for window
! systems) to display at the corresponding overlay arrow position.
! If either property is not set, the default `overlay-arrow-string' or
! 'overlay-arrow-fringe-bitmap' will be used.
!
! +++
! ** New line-height and line-spacing properties for newline characters
!
! A newline can now have line-height and line-spacing text or overlay
! properties that control the height of the corresponding display row.
!
! If the line-height property value is t, the newline does not
! contribute to the height of the display row; instead the height of the
! newline glyph is reduced. Also, a line-spacing property on this
! newline is ignored. This can be used to tile small images or image
! slices without adding blank areas between the images.
!
! If the line-height property value is a positive integer, the value
! specifies the minimum line height in pixels. If necessary, the line
! height it increased by increasing the line's ascent.
!
! If the line-height property value is a float, the minimum line height
! is calculated by multiplying the default frame line height by the
! given value.
!
! If the line-height property value is a cons (FACE . RATIO), the
! minimum line height is calculated as RATIO * height of named FACE.
! RATIO is int or float. If FACE is t, it specifies the current face.
!
! If the line-height property value is a cons (nil . RATIO), the line
! height is calculated as RATIO * actual height of the line's contents.
!
! If the line-height value is a cons (HEIGHT . TOTAL), HEIGHT specifies
! the line height as described above, while TOTAL is any of the forms
! described above and specifies the total height of the line, causing a
! varying number of pixels to be inserted after the line to make it line
! exactly that many pixels high.
!
! If the line-spacing property value is an positive integer, the value
! is used as additional pixels to insert after the display line; this
! overrides the default frame line-spacing and any buffer local value of
! the line-spacing variable.
!
! If the line-spacing property is a float or cons, the line spacing
! is calculated as specified above for the line-height property.
!
! +++
! ** The buffer local line-spacing variable can now have a float value,
! which is used as a height relative to the default frame line height.
!
! +++
! ** Enhancements to stretch display properties
!
! The display property stretch specification form `(space PROPS)', where
! PROPS is a property list now allows pixel based width and height
! specifications, as well as enhanced horizontal text alignment.
!
! The value of these properties can now be a (primitive) expression
! which is evaluated during redisplay. The following expressions
! are supported:
!
! EXPR ::= NUM | (NUM) | UNIT | ELEM | POS | IMAGE | FORM
! NUM ::= INTEGER | FLOAT | SYMBOL
! UNIT ::= in | mm | cm | width | height
! ELEM ::= left-fringe | right-fringe | left-margin | right-margin
! | scroll-bar | text
! POS ::= left | center | right
! FORM ::= (NUM . EXPR) | (OP EXPR ...)
! OP ::= + | -
!
! The form `NUM' specifies a fractional width or height of the default
! frame font size. The form `(NUM)' specifies an absolute number of
! pixels. If a symbol is specified, its buffer-local variable binding
! is used. The `in', `mm', and `cm' units specifies the number of
! pixels per inch, milli-meter, and centi-meter, resp. The `width' and
! `height' units correspond to the width and height of the current face
! font. An image specification corresponds to the width or height of
! the image.
!
! The `left-fringe', `right-fringe', `left-margin', `right-margin',
! `scroll-bar', and `text' elements specify to the width of the
! corresponding area of the window.
!
! The `left', `center', and `right' positions can be used with :align-to
! to specify a position relative to the left edge, center, or right edge
! of the text area. One of the above window elements (except `text')
! can also be used with :align-to to specify that the position is
! relative to the left edge of the given area. Once the base offset for
! a relative position has been set (by the first occurrence of one of
! these symbols), further occurences of these symbols are interpreted as
! the width of the area.
!
! For example, to align to the center of the left-margin, use
! :align-to (+ left-margin (0.5 . left-margin))
!
! If no specific base offset is set for alignment, it is always relative
! to the left edge of the text area. For example, :align-to 0 in a
! header-line aligns with the first text column in the text area.
!
! The value of the form `(NUM . EXPR)' is the value of NUM multiplied by
! the value of the expression EXPR. For example, (2 . in) specifies a
! width of 2 inches, while (0.5 . IMAGE) specifies half the width (or
! height) of the specified image.
!
! The form `(+ EXPR ...)' adds up the value of the expressions.
! The form `(- EXPR ...)' negates or subtracts the value of the expressions.
!
! +++
! ** Support for displaying image slices
!
! *** New display property (slice X Y WIDTH HEIGHT) can be used with
! an image property to display only a specific slice of the image.
!
! *** Function insert-image has new optional fourth arg to
! specify image slice (X Y WIDTH HEIGHT).
!
! *** New function insert-sliced-image inserts a given image as a
! specified number of evenly sized slices (rows x columns).
!
! +++
! ** Images can now have an associated image map via the :map property.
!
! An image map is an alist where each element has the format (AREA ID PLIST).
! An AREA is specified as either a rectangle, a circle, or a polygon:
! A rectangle is a cons (rect . ((X0 . Y0) . (X1 . Y1))) specifying the
! pixel coordinates of the upper left and bottom right corners.
! A circle is a cons (circle . ((X0 . Y0) . R)) specifying the center
! and the radius of the circle; R can be a float or integer.
! A polygon is a cons (poly . [X0 Y0 X1 Y1 ...]) where each pair in the
! vector describes one corner in the polygon.
!
! When the mouse pointer is above a hot-spot area of an image, the
! PLIST of that hot-spot is consulted; if it contains a `help-echo'
! property it defines a tool-tip for the hot-spot, and if it contains
! a `pointer' property, it defines the shape of the mouse cursor when
! it is over the hot-spot. See the variable 'void-area-text-pointer'
! for possible pointer shapes.
!
! When you click the mouse when the mouse pointer is over a hot-spot,
! an event is composed by combining the ID of the hot-spot with the
! mouse event, e.g. [area4 mouse-1] if the hot-spot's ID is `area4'.
!
! +++ (lispref)
! ??? (man)
! ** The mouse pointer shape in void text areas (i.e. after the end of a
! line or below the last line in the buffer) of the text window is now
! controlled by the new variable `void-text-area-pointer'. The default
! is to use the `arrow' (non-text) pointer. Other choices are `text'
! (or nil), `hand', `vdrag', `hdrag', `modeline', and `hourglass'.
!
! +++
! ** The mouse pointer shape over an image can now be controlled by the
! :pointer image property.
!
! +++
! ** Lisp code can now test if a given buffer position is inside a
! clickable link with the new function `mouse-on-link-p'. This is the
! function used by the new `mouse-1-click-follows-link' functionality.
!
! +++
! ** The mouse pointer shape over ordinary text or images can now be
! controlled/overriden via the `pointer' text property.
!
! ** Mouse event enhancements:
!
! +++
! *** Mouse clicks on fringes now generates left-fringe or right-fringes
! events, rather than a text area click event.
!
! +++
! *** Mouse clicks in the left and right marginal areas now includes a
! sensible buffer position corresponding to the first character in the
! corresponding text row.
!
! +++
! *** Function `mouse-set-point' now works for events outside text area.
!
! +++
! *** Mouse events now includes buffer position for all event types.
!
! +++
! *** `posn-point' now returns buffer position for non-text area events.
!
! +++
! *** New function `posn-area' returns window area clicked on (nil means
! text area).
!
! +++
! *** Mouse events include actual glyph column and row for all event types.
!
! +++
! *** New function `posn-actual-col-row' returns actual glyph coordinates.
!
! +++
! *** Mouse events can now include image object in addition to string object.
!
! +++
! *** Mouse events include relative x and y pixel coordinates relative to
! the top left corner of the object (image or character) clicked on.
!
! +++
! *** Mouse events include the pixel width and height of the object
! (image or character) clicked on.
!
! +++
! *** New functions 'posn-object', 'posn-object-x-y', and
! 'posn-object-width-height' return the image or string object of a mouse
! click, the x and y pixel coordinates relative to the top left corner
! of that object, and the total width and height of that object.
!
! +++
! ** At the end of a command, point moves out from within invisible
! text, in the same way it moves out from within text covered by an
! image or composition property.
!
! This makes it generally unnecessary to mark invisible text as intangible.
! This is particularly good because the intangible property often has
! unexpected side-effects since the property applies to everything
! (including `goto-char', ...) whereas this new code is only run after
! post-command-hook and thus does not care about intermediate states.
!
! +++
! ** Normally, the cursor is displayed at the end of any overlay and
! text property string that may be present at the current window
! position. The cursor can now be placed on any character of such
! strings by giving that character a non-nil `cursor' text property.
!
! +++
! ** The display space :width and :align-to text properties are now
! supported on text terminals.
!
! +++
! ** Arguments for remove-overlays are now optional, so that you can
! remove all overlays in the buffer by just calling (remove-overlay).
!
! +++
! ** New variable char-property-alias-alist.
!
! This variable allows you to create alternative names for text
! properties. It works at the same level as `default-text-properties',
! although it applies to overlays as well. This variable was introduced
! to implement the `font-lock-face' property.
! +++
! ** New function `get-char-property-and-overlay' accepts the same
! arguments as `get-char-property' and returns a cons whose car is the
! return value of `get-char-property' called with those arguments and
! whose cdr is the overlay in which the property was found, or nil if
! it was found as a text property or not found at all.
+++
! ** The new frame parameter `tty-color-mode' specifies the mode to use
! for color support on character terminal frames. Its value can be a
! number of colors to support, or a symbol. See the Emacs Lisp
! Reference manual for more detailed documentation.
+++
! ** The new face attribute `min-colors' can be used to tailor the face
! color to the number of colors supported by a display, and define the
! foreground and background colors accordingly so that they look best on
! a terminal that supports at least this many colors. This is now the
! preferred method for defining default faces in a way that makes a good
! use of the capabilities of the display.
+++
! ** (char-displayable-p CHAR) returns non-nil if Emacs ought to be able
to display CHAR. More precisely, if the selected frame's fontset has
a font to display the character set that CHAR belongs to.
--- 4074,4104 ----
displaying the buffer in a window, or use `set-window-buffer' to force
an update of the display margins.
! **** Windows can now have their own individual scroll-bar settings
controlling the width and position of scroll-bars.
! To control the scroll-bar of a window, either set the buffer-local
! variables `scroll-bar-mode' and `scroll-bar-width', or call
! `set-window-scroll-bars'. The function `window-scroll-bars' can be
! used to obtain the current settings. To make `scroll-bar-mode' and
! `scroll-bar-width' take effect, you must set them before displaying
! the buffer in a window, or use `set-window-buffer' to force an update
! of the display margins.
! ** Redisplay features:
+++
! *** `sit-for' can now be called with args (SECONDS &optional NODISP).
+++
! *** New function `force-window-update' can initiate a full redisplay of
! one or all windows. Normally, this is not needed as changes in window
! contents are detected automatically. However, certain implicit
! changes to mode lines, header lines, or display properties may require
! forcing an explicit window update.
+++
! *** (char-displayable-p CHAR) returns non-nil if Emacs ought to be able
to display CHAR. More precisely, if the selected frame's fontset has
a font to display the character set that CHAR belongs to.
***************
*** 3845,4657 ****
does that, this value cannot be accurate.
+++
! ** New function display-supports-face-attributes-p can be used to test
! whether a given set of face attributes is actually displayable.
!
! A new predicate `supports' has also been added to the `defface' face
! specification language, which can be used to do this test for faces
! defined with defface.
!
! ---
! ** The special treatment of faces whose names are of the form `fg:COLOR'
! or `bg:COLOR' has been removed. Lisp programs should use the
! `defface' facility for defining faces with specific colors, or use
! the feature of specifying the face attributes :foreground and :background
! directly in the `face' property instead of using a named face.
!
! +++
! ** The first face specification element in a defface can specify
! `default' instead of frame classification. Then its attributes act as
! defaults that apply to all the subsequent cases (and can be overridden
! by them).
!
! +++
! ** The variable `face-font-rescale-alist' specifies how much larger
! (or smaller) font we should use. For instance, if the value is
! '((SOME-FONTNAME-PATTERN . 1.3)) and a face requests a font of 10
! point, we actually use a font of 13 point if the font matches
! SOME-FONTNAME-PATTERN.
!
! ---
! ** `set-fontset-font', `fontset-info', `fontset-font' now operate on
! the default fontset if the argument NAME is nil..
! ---
! ** The function face-differs-from-default-p now truly checks whether the
! given face displays differently from the default face or not (previously
! it did only a very cursory check).
! +++
! ** face-attribute, face-foreground, face-background, and face-stipple now
! accept a new optional argument, INHERIT, which controls how face
! inheritance is used when determining the value of a face attribute.
+++
! ** New functions face-attribute-relative-p and merge-face-attribute
! help with handling relative face attributes.
! +++
! ** The priority of faces in an :inherit attribute face-list is reversed.
! If a face contains an :inherit attribute with a list of faces, earlier
! faces in the list override later faces in the list; in previous releases
! of Emacs, the order was the opposite. This change was made so that
! :inherit face-lists operate identically to face-lists in text `face'
! properties.
! +++
! ** New standard font-lock face `font-lock-preprocessor-face'.
! +++
! ** New special text property `font-lock-face'.
! This property acts like the `face' property, but it is controlled by
! M-x font-lock-mode. It is not, strictly speaking, a builtin text
! property. Instead, it is implemented inside font-core.el, using the
! new variable `char-property-alias-alist'.
! ---
! ** jit-lock obeys a new text-property `jit-lock-defer-multiline'.
! If a piece of text with that property gets contextually refontified
! (see jit-lock-defer-contextually), then all of that text will
! be refontified. This is useful when the syntax of a textual element
! depends on text several lines further down (and when font-lock-multiline
! is not appropriate to solve that problem). For example in Perl:
! s{
! foo
! }{
! bar
! }e
! Adding/removing the last `e' changes the `bar' from being a piece of
! text to being a piece of code, so you'd put a jit-lock-defer-multiline
! property over the second half of the command to force (deferred)
! refontification of `bar' whenever the `e' is added/removed.
! +++
! ** font-lock can manage arbitrary text-properties beside `face'.
! *** the FACENAME returned in font-lock-keywords can be a list
! of the form (face FACE PROP1 VAL1 PROP2 VAL2 ...) so you can set
! other properties than `face'.
! *** font-lock-extra-managed-props can be set to make sure those extra
! properties are automatically cleaned up by font-lock.
! ---
! ** The precedence of file-name-handlers has been changed.
! Instead of blindly choosing the first handler that matches,
! find-file-name-handler now gives precedence to a file-name handler
! that matches near the end of the file name. More specifically, the
! handler whose (match-beginning 0) is the largest is chosen.
! In case of ties, the old "first matched" rule applies.
+++
! ** A file name handler can declare which operations it handles.
!
! You do this by putting an `operation' property on the handler name
! symbol. The property value should be a list of the operations that
! the handler really handles. It won't be called for any other
! operations.
!
! This is useful for autoloaded handlers, to prevent them from being
! autoloaded when not really necessary.
+++
! ** `set-auto-mode' now gives the interpreter magic line (if present)
! precedence over the file name. Likewise an <?xml or <!DOCTYPE declaration
! will give the buffer XML or SGML mode, based on the new var
! `magic-mode-alist'.
! +++
! ** Major mode functions now run the new normal hook
! `after-change-major-mode-hook', at their very end, after the mode hooks.
! ---
! ** If a major mode function has a non-nil `no-clone-indirect'
! property, `clone-indirect-buffer' signals an error if you use
! it in that buffer.
! +++
! ** Major modes can define `eldoc-documentation-function'
! locally to provide Eldoc functionality by some method appropriate to
! the language.
! +++
! ** define-derived-mode by default creates a new empty abbrev table.
! It does not copy abbrevs from the parent mode's abbrev table.
! +++
! ** define-minor-mode now accepts arbitrary additional keyword arguments
! and simply passes them to defcustom, if applicable.
! +++
! ** The new function `run-mode-hooks' and the new macro `delay-mode-hooks'
! are used by define-derived-mode to make sure the mode hook for the
! parent mode is run at the end of the child mode.
! +++
! ** `minor-mode-list' now holds a list of minor mode commands.
! +++
! ** Both the variable and the function `disabled-command-hook' have
! been renamed to `disabled-command-function'. The variable
! `disabled-command-hook' has been kept as an obsolete alias.
! +++
! ** The function `eql' is now available without requiring the CL package.
! +++
! ** If optional third argument APPEND to `add-to-list' is non-nil, a
! new element gets added at the end of the list instead of at the
! beginning. This change actually occurred in Emacs-21.1, but was not
! documented.
+++
! ** The escape sequence \s is now interpreted as a SPACE character,
! unless it is followed by a `-' in a character constant (e.g. ?\s-A),
! in which case it is still interpreted as the super modifier.
! In strings, \s is always interpreted as a space.
+++
! ** A hex escape in a string forces the string to be multibyte.
! An octal escape makes it unibyte.
+++
! ** `split-string' now includes null substrings in the returned list if
! the optional argument SEPARATORS is non-nil and there are matches for
! SEPARATORS at the beginning or end of the string. If SEPARATORS is
! nil, or if the new optional third argument OMIT-NULLS is non-nil, all
! empty matches are omitted from the returned list.
! +++
! ** New function `string-to-multibyte' converts a unibyte string to a
! multibyte string with the same individual character codes.
! +++
! ** The function `number-sequence' returns a list of equally-separated
! numbers. For instance, (number-sequence 4 9) returns (4 5 6 7 8 9).
! By default, the separation is 1, but you can specify a different separation
! as the third argument. (number-sequence 1.5 6 2) returns (1.5 3.5 5.5).
! +++
! ** `sit-for' can now be called with args (SECONDS &optional NODISP).
+++
! ** A function's docstring can now hold the function's usage info on
! its last line. It should match the regexp "\n\n(fn.*)\\'".
! +++
! ** The `defmacro' form can 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
! (defmacro NAME LAMBDA-LIST [DOC-STRING] [DECLARATION ...] ...)
! 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.
+++
! ** 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. The keys in alists and hash tables can be either
! strings or symbols, which are automatically converted with to strings.
+++
! ** The new macro dynamic-completion-table supports using functions
! as a dynamic completion table.
!
! (dynamic-completion-table FUN)
! FUN is called with one argument, the string for which completion is required,
! and it should return an alist containing all the intended possible
! completions. This alist can be a full list of possible completions so that
FUN
! can ignore the value of its argument. If completion is performed in the
! minibuffer, FUN will be called in the buffer from which the minibuffer was
! entered. dynamic-completion-table then computes the completion.
+++
! ** The new macro lazy-completion-table initializes a variable
! as a lazy completion table.
!
! (lazy-completion-table VAR FUN &rest ARGS)
!
! If the completion table VAR is used for the first time (e.g., by passing VAR
! as an argument to `try-completion'), the function FUN is called with arguments
! ARGS. FUN must return the completion table that will be stored in VAR. If
! completion is requested in the minibuffer, FUN will be called in the buffer
! from which the minibuffer was entered. The return value of
! `lazy-completion-table' must be used to initialize the value of VAR.
+++
! ** `load-history' can now have elements of the form (t . FUNNAME),
! which means FUNNAME was previously defined as an autoload (before the
! current file redefined it).
+++
! ** `load-history' now records (defun . FUNNAME) when a function is
! defined. For a variable, it records just the variable name.
! ---
! ** The variable `recursive-load-depth-limit' has been deleted.
! Emacs now signals an error if the same file is loaded with more
! than 3 levels of nesting.
+++
! ** The function symbol-file can now search specifically for function or
! variable definitions.
+++
! ** `provide' and `featurep' now accept an optional second argument
! to test/provide subfeatures. Also `provide' now checks `after-load-alist'
! and runs any code associated with the provided feature.
+++
! ** `declare' is now a macro. This change was made mostly for
! documentation purposes and should have no real effect on Lisp code.
+++
! ** Byte compiler changes:
! *** The byte-compiler now displays the actual line and character
! position of errors, where possible. Additionally, the form of its
! warning and error messages have been brought more in line with the
! output of other GNU tools.
! *** The new macro `with-no-warnings' suppresses all compiler warnings
! inside its body. In terms of execution, it is equivalent to `progn'.
! *** You can avoid warnings for possibly-undefined symbols with a
! simple convention that the compiler understands. (This is mostly
! useful in code meant to be portable to different Emacs versions.)
! Write forms like the following, or code that macroexpands into such
! forms:
! (if (fboundp 'foo) <then> <else>)
! (if (boundp 'foo) <then> <else)
! In the first case, using `foo' as a function inside the <then> form
! won't produce a warning if it's not defined as a function, and in the
! second case, using `foo' as a variable won't produce a warning if it's
! unbound. The test must be in exactly one of the above forms (after
! macro expansion), but such tests can be nested. Note that `when' and
! `unless' expand to `if', but `cond' doesn't.
! *** `(featurep 'xemacs)' is treated by the compiler as nil. This
! helps to avoid noisy compiler warnings in code meant to run under both
! Emacs and XEmacs and can sometimes make the result significantly more
! efficient. Since byte code from recent versions of XEmacs won't
! generally run in Emacs and vice versa, this optimization doesn't lose
! you anything.
! *** The local variable `no-byte-compile' in elisp files is now obeyed.
! ---
! ** 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.
+++
! ** 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).
+++
! ** There is a new Warnings facility; see the functions `warn'
! and `display-warning'.
! ---
! ** VC changes for backends:
! *** (vc-switches BACKEND OPERATION) is a new function for use by backends.
! *** The new `find-version' backend function replaces the `destfile'
! parameter of the `checkout' backend function.
! Old code still works thanks to a default `find-version' behavior that
! uses the old `destfile' parameter.
+++
! ** Already true in Emacs 21.1, but not emphasized clearly enough:
!
! Multibyte buffers can now faithfully record all 256 character codes
! from 0 to 255. As a result, most of the past reasons to use unibyte
! buffers no longer exist. We only know of three reasons to use them
! now:
!
! 1. If you prefer to use unibyte text all of the time.
! 2. For reading files into temporary buffers, when you want to avoid
! the time it takes to convert the format.
! 3. For binary files where format conversion would be pointless and
! wasteful.
---
! ** set-buffer-file-coding-system now takes an additional argument,
! NOMODIFY. If it is non-nil, it means don't mark the buffer modified.
+++
! ** 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.)
! ---
! ** The new function `merge-coding-systems' fills in unspecified aspects
! of one coding system from another coding system.
---
! ** New coding system property `mime-text-unsuitable' indicates that
! the coding system's `mime-charset' is not suitable for MIME text
! parts, e.g. utf-16.
+++
! ** New function `decode-coding-inserted-region' decodes a region as if
! it is read from a file without decoding.
+++
! ** Function `translate-region' accepts also a char-table as TABLE
! argument.
+++
! ** The new translation table `translation-table-for-input'
! is used for customizing self-insertion. The character to
! be inserted is translated through it.
! ---
! ** New CCL functions `lookup-character' and `lookup-integer' access
! hash tables defined by the Lisp function `define-translation-hash-table'.
+++
! ** The flags, width, and precision options for %-specifications in function
! `format' are now documented. Some flags that were accepted but not
! implemented (such as "*") are no longer accepted.
---
! ** New function `redirect-debugging-output' can be used to redirect
! debugging output on the stderr file handle to a file.
! +++
! ** `makehash' is now obsolete. Use `make-hash-table' instead.
+++
! ** The macro `with-syntax-table' does not copy the table any more.
! +++
! ** New variables `gc-elapsed' and `gcs-done' provide extra information
! on garbage collection.
+++
! ** New function `locale-info' accesses locale information.
! +++
! ** The new variable `print-continuous-numbering', when non-nil, says
! that successive calls to print functions should use the same
! numberings for circular structure references. This is only relevant
! when `print-circle' is non-nil.
! When you bind `print-continuous-numbering' to t, you should
! also bind `print-number-table' to nil.
---
! ** When pure storage overflows while dumping, Emacs now prints how
! much pure storage it will approximately need.
!
! +++
! ** File local variables.
! A file local variables list cannot specify a string with text
! properties--any specified text properties are discarded.
! +++
! ** 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
! needed.
! ---
! ** 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.
+++
! ** Renamed hooks to better follow the naming 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,
! x-lost-selection-hooks to x-lost-selection-functions,
! x-sent-selection-hooks to x-sent-selection-functions.
! Marked local-write-file-hooks as obsolete (use the LOCAL arg of `add-hook').
+++
! ** 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.
! +++
! ** 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).
! The value in that case is an identifier for the remote file system.
+++
! ** Functions `get' and `plist-get' no longer signals an error for
! a malformed property list. They also detect cyclic lists.
+++
! ** The function `atan' now accepts an optional second argument.
!
! When called with 2 arguments, as in `(atan Y X)', `atan' returns the
! angle in radians between the vector [X, Y] and the X axis. (This is
! equivalent to the standard C library function `atan2'.)
+++
! ** New function format-mode-line.
! This returns the mode-line or header-line of the selected (or a
! specified) window as a string with or without text properties.
+++
! ** The new mode-line construct `(:propertize ELT PROPS...)' can be
! used to add text properties to mode-line elements.
+++
! ** The new `%i' and `%I' constructs for `mode-line-format' can be used
! to display the size of the accessible part of the buffer on the mode
! line.
---
! ** Indentation of simple and extended loop forms has been added to the
! cl-indent package. The new user options
! `lisp-loop-keyword-indentation', `lisp-loop-forms-indentation', and
! `lisp-simple-loop-indentation' can be used to customize the
! indentation of keywords and forms in loop forms.
! ---
! ** Indentation of backquoted forms has been made customizable in the
! cl-indent package. See the new user option `lisp-backquote-indentation'.
! +++
! ** field-beginning and field-end now accept an additional optional
! argument, LIMIT.
+++
! ** define-abbrev now accepts an optional argument SYSTEM-FLAG. If
! non-nil, this marks the abbrev as a "system" abbrev, which means that
! it won't be stored in the user's abbrevs file if he saves the abbrevs.
! Major modes that predefine some abbrevs should always specify this
! flag.
!
! ---
! ** describe-vector now takes a second argument `describer' which is
! called to print the entries' values. It defaults to `princ'.
+++
! ** defcustom and other custom declarations now use a default group
! (the last prior group defined in the same file) when no :group was given.
! ---
! ** The new customization type `float' specifies numbers with floating
! point (no integers are allowed).
+++
! ** emacsserver now runs pre-command-hook and post-command-hook when
! it receives a request from emacsclient.
! ---
! ** New function `text-clone-create'. Text clones are chunks of text
! that are kept identical by transparently propagating changes from one
! clone to the other.
+++
! ** Functions `user-uid' and `user-real-uid' now return floats if the
! user UID doesn't fit in a Lisp integer. Function `user-full-name'
! accepts a float as UID parameter.
+++
! ** New vars `exec-suffixes' and `load-suffixes' used when
! searching for an executable resp. an elisp file.
+++
! ** Functions from `post-gc-hook' are run at the end of garbage
! collection. The hook is run with GC inhibited, so use it with care.
! +++
! ** The variables most-positive-fixnum and most-negative-fixnum
! hold the largest and smallest possible integer values.
! ---
! ** On MS Windows, locale-coding-system is used to interact with the OS.
! The Windows specific variable w32-system-coding-system, which was
! formerly used for that purpose is now an alias for locale-coding-system.
! ---
! ** New function x-send-client-message sends a client message when
! running under X.
! ---
! ** easy-mmode-define-global-mode has been renamed to
! define-global-minor-mode. The old name remains as an alias.
! ---
! ** To manipulate the File menu using easy-menu, you must specify the
! proper name "file". In previous Emacs versions, you had to specify
! "files", even though the menu item itself was changed to say "File"
! several versions ago.
! ---
! ** The dummy function keys made by easymenu are now always lower case.
! If you specify the menu item name "Ada", for instance, it uses `ada'
! as the "key" bound by that key binding.
! This is relevant only if Lisp code looks for the bindings that were
! made with easymenu.
! ---
! ** `easy-menu-define' now allows you to use nil for the symbol name
! if you don't need to give the menu a name. If you install the menu
! into other keymaps right away (MAPS is non-nil), it usually doesn't
! need to have a name.
! ---
! ** rx.el has new corresponding `symbol-end' and `symbol-start' elements.
! ** New functions, macros, and commands:
+++
! *** The new function `assoc-string' replaces `assoc-ignore-case' and
! `assoc-ignore-representation', which are still available, but have
! been declared obsolete.
+++
! *** The new function `buffer-local-value' returns the buffer-local
! binding of VARIABLE (a symbol) in buffer BUFFER. If VARIABLE does not
! have a buffer-local binding in buffer BUFFER, it returns the default
! value of VARIABLE instead.
+++
! *** The new function `called-interactively-p' does what many people
! have mistakenly believed `interactive-p' did: it returns t if the
! calling function was called through `call-interactively'. This should
! only be used when you cannot add a new "interactive" argument to the
! command.
! *** The new function copy-abbrev-table returns a new abbrev table that
! is a copy of a given abbrev table.
+++
! *** New function copy-tree makes a copy of a tree, recursively copying
! both cars and cdrs.
! +++
! *** New function `delete-dups' destructively removes `equal'
! duplicates from a list. Of several `equal' occurrences of an element
! in the list, the first one is kept.
! +++
! *** The new function `filter-buffer-substring' extracts a buffer
! substring, passes it through a set of filter functions, and returns
! the filtered substring. It is used instead of `buffer-substring' or
! `delete-and-extract-region' when copying text into a user-accessible
! data structure, like the kill-ring, X clipboard, or a register. The
! list of filter function is specified by the new variable
! `buffer-substring-filters'. For example, Longlines mode uses
! `buffer-substring-filters' to remove soft newlines from the copied
! text.
+++
! *** New functions frame-current-scroll-bars and window-current-scroll-bars.
These functions return the current locations of the vertical and
horizontal scroll bars in a frame or window.
+++
! *** The new primitive `get-internal-run-time' returns the processor
! run time used by Emacs since start-up.
+++
! *** The new function insert-buffer-substring-as-yank works like
! `insert-buffer-substring', but removes the text properties in the
! `yank-excluded-properties' list.
+++
! *** The new function insert-buffer-substring-no-properties is like
! insert-buffer-substring, but removes all text properties from the
! inserted substring.
! +++
! *** The new functions `lax-plist-get' and `lax-plist-put' are like
! `plist-get' and `plist-put', except that they compare the property
! name using `equal' rather than `eq'.
+++
! *** New function `line-number-at-pos' returns the line number of the
! current line in the current buffer, or if optional buffer position is
! given, line number of corresponding line in current buffer.
! +++
! *** New function `looking-back' checks whether a regular expression matches
! the text before point. Specifying the LIMIT argument bounds how far
! back the match can start; this is a way to keep it from taking too long.
! +++
! *** New function `macroexpand-all' expands all macros in a form.
! It is similar to the Common-Lisp function of the same name.
! One difference is that it guarantees to return the original argument
! if no expansion is done, which can be tested using `eq'.
! *** 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.
! +++
! *** New function minibuffer-selected-window returns the window which
! was selected when entering the minibuffer.
! +++
! *** The new function `modify-all-frames-parameters' modifies parameters
! for all (existing and future) frames.
+++
! *** New functions posn-at-point and posn-at-x-y return
! click-event-style position information for a given visible buffer
! position or for a given window pixel coordinate.
---
! *** New function quail-find-key returns a list of keys to type in the
! current input method to input a character.
!
! +++
! *** The new function `rassq-delete-all' deletes all elements from an
! alist whose cdr is `eq' to a specified value.
! +++
! *** The new function remove-list-of-text-properties is almost the same
! as `remove-text-properties'. The only difference is that it takes a
! list of property names as argument rather than a property list.
+++
! *** The new primitive `set-file-times' sets a file's access and
! modification times. Magic file name handlers can handle this
! operation.
! +++
! *** New function substring-no-properties returns a substring without
! text properties.
! +++
! *** The new function syntax-after returns the syntax code
! of the character after a specified buffer position, taking account
! of text properties as well as the character code.
! +++
! *** `syntax-class' extracts the class of a syntax code (as returned
! by syntax-after).
+++
! *** New function `tool-bar-local-item-from-menu'
! The `tool-bar-add-item-from-menu' must not be used (as previously
! recommended) for making entries in the tool bar for local keymaps.
! Instead, use the function `tool-bar-local-item-from-menu', which lets
! you specify the map to use as an argument.
+++
! *** New function window-body-height.
! This is like window-height but does not count the mode line
! or the header line.
+++
! *** (while-no-input BODY...) runs BODY, but only so long as no input
! arrives. If the user types or clicks anything, BODY stops as if a
! quit had occurred. while-no-input returns the value of BODY, if BODY
! finishes. It returns nil if BODY was aborted.
! +++
! *** New macro with-local-quit temporarily sets inhibit-quit to nil for use
! around potentially blocking or long-running code in timers
! and post-command-hooks.
! ** New packages:
! *** The new package syntax.el provides an efficient way to find the
! current syntactic context (as returned by parse-partial-sexp).
! *** The new package bindat.el provides functions to unpack and pack
! binary data structures, such as network packets, to and from Lisp
! data structures.
---
! *** The TCL package tcl-mode.el was replaced by tcl.el.
! This was actually done in Emacs-21.1, and was not documented.
+++
! *** The new package button.el implements simple and fast `clickable buttons'
! in emacs buffers. `buttons' are much lighter-weight than the `widgets'
! implemented by widget.el, and can be used by lisp code that doesn't
! require the full power of widgets. Emacs uses buttons for such things
! as help and apropos buffers.
! ---
! *** master-mode.el implements a minor mode for scrolling a slave
! buffer without leaving your current buffer, the master buffer.
! It can be used by sql.el, for example: the SQL buffer is the master
! and its SQLi buffer is the slave. This allows you to scroll the SQLi
! buffer containing the output from the SQL buffer containing the
! commands.
! This is how to use sql.el and master.el together: the variable
! sql-buffer contains the slave buffer. It is a local variable in the
! SQL buffer.
! (add-hook 'sql-mode-hook
! (function (lambda ()
! (master-mode t)
! (master-set-slave sql-buffer))))
! (add-hook 'sql-set-sqli-hook
! (function (lambda ()
! (master-set-slave sql-buffer))))
+++
! *** 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 `noreturn' suppresses a
! red splotch. It is an error if the argument to `noreturn' does
! return. The macro 1value suppresses a brown splotch for its argument.
! This macro is a no-op except during test-coverage -- then it signals
! an error if the argument actually returns differing values.
! ---
! ** Support for Mocklisp has been removed.
---
! ** The function insert-string is now obsolete.
* Installation changes in Emacs 21.3
--- 4106,4817 ----
does that, this value cannot be accurate.
+++
! *** You can define multiple overlay arrows via the new
! variable `overlay-arrow-variable-list'.
! It contains a list of varibles which contain overlay arrow position
! markers, including the original `overlay-arrow-position' variable.
! Each variable on this list can have individual `overlay-arrow-string'
! and `overlay-arrow-bitmap' properties that specify an overlay arrow
! string (for non-window terminals) or fringe bitmap (for window
! systems) to display at the corresponding overlay arrow position.
! If either property is not set, the default `overlay-arrow-string' or
! 'overlay-arrow-fringe-bitmap' will be used.
+++
! *** New `line-height' and `line-spacing' properties for newline characters
! A newline can now have `line-height' and `line-spacing' text or overlay
! properties that control the height of the corresponding display row.
! If the `line-height' property value is t, the newline does not
! contribute to the height of the display row; instead the height of the
! newline glyph is reduced. Also, a `line-spacing' property on this
! newline is ignored. This can be used to tile small images or image
! slices without adding blank areas between the images.
! If the `line-height' property value is a positive integer, the value
! specifies the minimum line height in pixels. If necessary, the line
! height it increased by increasing the line's ascent.
! If the `line-height' property value is a float, the minimum line
! height is calculated by multiplying the default frame line height by
! the given value.
! If the `line-height' property value is a cons (FACE . RATIO), the
! minimum line height is calculated as RATIO * height of named FACE.
! RATIO is int or float. If FACE is t, it specifies the current face.
! If the `line-height' property value is a cons (nil . RATIO), the line
! height is calculated as RATIO * actual height of the line's contents.
! If the `line-height' value is a cons (HEIGHT . TOTAL), HEIGHT specifies
! the line height as described above, while TOTAL is any of the forms
! described above and specifies the total height of the line, causing a
! varying number of pixels to be inserted after the line to make it line
! exactly that many pixels high.
! If the `line-spacing' property value is an positive integer, the value
! is used as additional pixels to insert after the display line; this
! overrides the default frame `line-spacing' and any buffer local value of
! the `line-spacing' variable.
! If the `line-spacing' property is a float or cons, the line spacing
! is calculated as specified above for the `line-height' property.
+++
! *** The buffer local line-spacing variable can now have a float value,
! which is used as a height relative to the default frame line height.
+++
! *** Enhancements to stretch display properties
! The display property stretch specification form `(space PROPS)', where
! PROPS is a property list now allows pixel based width and height
! specifications, as well as enhanced horizontal text alignment.
! The value of these properties can now be a (primitive) expression
! which is evaluated during redisplay. The following expressions
! are supported:
! EXPR ::= NUM | (NUM) | UNIT | ELEM | POS | IMAGE | FORM
! NUM ::= INTEGER | FLOAT | SYMBOL
! UNIT ::= in | mm | cm | width | height
! ELEM ::= left-fringe | right-fringe | left-margin | right-margin
! | scroll-bar | text
! POS ::= left | center | right
! FORM ::= (NUM . EXPR) | (OP EXPR ...)
! OP ::= + | -
! The form `NUM' specifies a fractional width or height of the default
! frame font size. The form `(NUM)' specifies an absolute number of
! pixels. If a symbol is specified, its buffer-local variable binding
! is used. The `in', `mm', and `cm' units specifies the number of
! pixels per inch, milli-meter, and centi-meter, resp. The `width' and
! `height' units correspond to the width and height of the current face
! font. An image specification corresponds to the width or height of
! the image.
! The `left-fringe', `right-fringe', `left-margin', `right-margin',
! `scroll-bar', and `text' elements specify to the width of the
! corresponding area of the window.
! The `left', `center', and `right' positions can be used with :align-to
! to specify a position relative to the left edge, center, or right edge
! of the text area. One of the above window elements (except `text')
! can also be used with :align-to to specify that the position is
! relative to the left edge of the given area. Once the base offset for
! a relative position has been set (by the first occurrence of one of
! these symbols), further occurences of these symbols are interpreted as
! the width of the area.
! For example, to align to the center of the left-margin, use
! :align-to (+ left-margin (0.5 . left-margin))
! If no specific base offset is set for alignment, it is always relative
! to the left edge of the text area. For example, :align-to 0 in a
! header-line aligns with the first text column in the text area.
! The value of the form `(NUM . EXPR)' is the value of NUM multiplied by
! the value of the expression EXPR. For example, (2 . in) specifies a
! width of 2 inches, while (0.5 . IMAGE) specifies half the width (or
! height) of the specified image.
! The form `(+ EXPR ...)' adds up the value of the expressions.
! The form `(- EXPR ...)' negates or subtracts the value of the expressions.
+++
! *** Normally, the cursor is displayed at the end of any overlay and
! text property string that may be present at the current window
! position. The cursor can now be placed on any character of such
! strings by giving that character a non-nil `cursor' text property.
+++
! *** The display space :width and :align-to text properties are now
! supported on text terminals.
+++
! *** Support for displaying image slices
! **** New display property (slice X Y WIDTH HEIGHT) can be used with
! an image property to display only a specific slice of the image.
! **** Function insert-image has new optional fourth arg to
! specify image slice (X Y WIDTH HEIGHT).
! **** New function insert-sliced-image inserts a given image as a
! specified number of evenly sized slices (rows x columns).
+++
! *** Images can now have an associated image map via the :map property.
! An image map is an alist where each element has the format (AREA ID PLIST).
! An AREA is specified as either a rectangle, a circle, or a polygon:
! A rectangle is a cons (rect . ((X0 . Y0) . (X1 . Y1))) specifying the
! pixel coordinates of the upper left and bottom right corners.
! A circle is a cons (circle . ((X0 . Y0) . R)) specifying the center
! and the radius of the circle; R can be a float or integer.
! A polygon is a cons (poly . [X0 Y0 X1 Y1 ...]) where each pair in the
! vector describes one corner in the polygon.
! When the mouse pointer is above a hot-spot area of an image, the
! PLIST of that hot-spot is consulted; if it contains a `help-echo'
! property it defines a tool-tip for the hot-spot, and if it contains
! a `pointer' property, it defines the shape of the mouse cursor when
! it is over the hot-spot. See the variable 'void-area-text-pointer'
! for possible pointer shapes.
! When you click the mouse when the mouse pointer is over a hot-spot,
! an event is composed by combining the ID of the hot-spot with the
! mouse event, e.g. [area4 mouse-1] if the hot-spot's ID is `area4'.
! ** Mouse pointer features:
! +++ (lispref)
! ??? (man)
! *** The mouse pointer shape in void text areas (i.e. after the end of a
! line or below the last line in the buffer) of the text window is now
! controlled by the new variable `void-text-area-pointer'. The default
! is to use the `arrow' (non-text) pointer. Other choices are `text'
! (or nil), `hand', `vdrag', `hdrag', `modeline', and `hourglass'.
+++
! *** The mouse pointer shape over an image can now be controlled by the
! :pointer image property.
+++
! *** The mouse pointer shape over ordinary text or images can now be
! controlled/overriden via the `pointer' text property.
! ** Mouse event enhancements:
+++
! *** Mouse clicks on fringes now generates left-fringe or right-fringes
! events, rather than a text area click event.
+++
! *** Mouse clicks in the left and right marginal areas now includes a
! sensible buffer position corresponding to the first character in the
! corresponding text row.
+++
! *** Function `mouse-set-point' now works for events outside text area.
! +++
! *** Mouse events now includes buffer position for all event types.
+++
! *** `posn-point' now returns buffer position for non-text area events.
+++
! *** New function `posn-area' returns window area clicked on (nil means
! text area).
+++
! *** Mouse events include actual glyph column and row for all event types.
+++
! *** New function `posn-actual-col-row' returns actual glyph coordinates.
! +++
! *** Mouse events can now include image object in addition to string object.
! +++
! *** Mouse events include relative x and y pixel coordinates relative to
! the top left corner of the object (image or character) clicked on.
! +++
! *** Mouse events include the pixel width and height of the object
! (image or character) clicked on.
! +++
! *** New functions 'posn-object', 'posn-object-x-y', and
! 'posn-object-width-height' return the image or string object of a mouse
! click, the x and y pixel coordinates relative to the top left corner
! of that object, and the total width and height of that object.
! ** Text property and overlay changes:
! +++
! *** Arguments for remove-overlays are now optional, so that you can
! remove all overlays in the buffer by just calling (remove-overlays).
! +++
! *** New variable char-property-alias-alist.
! This variable allows you to create alternative names for text
! properties. It works at the same level as `default-text-properties',
! although it applies to overlays as well. This variable was introduced
! to implement the `font-lock-face' property.
+++
! *** New function `get-char-property-and-overlay' accepts the same
! arguments as `get-char-property' and returns a cons whose car is the
! return value of `get-char-property' called with those arguments and
! whose cdr is the overlay in which the property was found, or nil if
! it was found as a text property or not found at all.
+++
! *** The new function remove-list-of-text-properties is almost the same
! as `remove-text-properties'. The only difference is that it takes a
! list of property names as argument rather than a property list.
! ** Face changes
+++
! *** The new face attribute condition `min-colors' can be used to tailor
! the face color to the number of colors supported by a display, and
! define the foreground and background colors accordingly so that they
! look best on a terminal that supports at least this many colors. This
! is now the preferred method for defining default faces in a way that
! makes a good use of the capabilities of the display.
! +++
! *** New function display-supports-face-attributes-p can be used to test
! whether a given set of face attributes is actually displayable.
! A new predicate `supports' has also been added to the `defface' face
! specification language, which can be used to do this test for faces
! defined with defface.
---
! *** The special treatment of faces whose names are of the form `fg:COLOR'
! or `bg:COLOR' has been removed. Lisp programs should use the
! `defface' facility for defining faces with specific colors, or use
! the feature of specifying the face attributes :foreground and :background
! directly in the `face' property instead of using a named face.
+++
! *** The first face specification element in a defface can specify
! `default' instead of frame classification. Then its attributes act as
! defaults that apply to all the subsequent cases (and can be overridden
! by them).
! +++
! *** The variable `face-font-rescale-alist' specifies how much larger
! (or smaller) font we should use. For instance, if the value is
! '((SOME-FONTNAME-PATTERN . 1.3)) and a face requests a font of 10
! point, we actually use a font of 13 point if the font matches
! SOME-FONTNAME-PATTERN.
---
! *** The function `face-differs-from-default-p' now truly checks
! whether the given face displays differently from the default face or
! not (previously it did only a very cursory check).
+++
! *** `face-attribute', `face-foreground', `face-background', and
! `face-stipple' now accept a new optional argument, INHERIT, which
! controls how face inheritance is used when determining the value of a
! face attribute.
+++
! *** New functions `face-attribute-relative-p' and `merge-face-attribute'
! help with handling relative face attributes.
+++
! *** The priority of faces in an :inherit attribute face list is reversed.
! If a face contains an :inherit attribute with a list of faces, earlier
! faces in the list override later faces in the list; in previous
! releases of Emacs, the order was the opposite. This change was made
! so that :inherit face lists operate identically to face lists in text
! `face' properties.
+++
! *** New standard font-lock face `font-lock-preprocessor-face'.
---
! *** `set-fontset-font', `fontset-info', `fontset-font' now operate on
! the default fontset if the argument NAME is nil..
! ** Font-Lock changes:
+++
! *** New special text property `font-lock-face'.
! This property acts like the `face' property, but it is controlled by
! M-x font-lock-mode. It is not, strictly speaking, a builtin text
! property. Instead, it is implemented inside font-core.el, using the
! new variable `char-property-alias-alist'.
+++
! *** font-lock can manage arbitrary text-properties beside `face'.
! *** the FACENAME returned in `font-lock-keywords' can be a list of the
! form (face FACE PROP1 VAL1 PROP2 VAL2 ...) so you can set other
! properties than `face'.
! *** `font-lock-extra-managed-props' can be set to make sure those
! extra properties are automatically cleaned up by font-lock.
---
! *** jit-lock obeys a new text-property `jit-lock-defer-multiline'.
! If a piece of text with that property gets contextually refontified
! (see `jit-lock-defer-contextually'), then all of that text will
! be refontified. This is useful when the syntax of a textual element
! depends on text several lines further down (and when `font-lock-multiline'
! is not appropriate to solve that problem). For example in Perl:
! s{
! foo
! }{
! bar
! }e
! Adding/removing the last `e' changes the `bar' from being a piece of
! text to being a piece of code, so you'd put a `jit-lock-defer-multiline'
! property over the second half of the command to force (deferred)
! refontification of `bar' whenever the `e' is added/removed.
! ** Major mode mechanism changes:
+++
! *** `set-auto-mode' now gives the interpreter magic line (if present)
! precedence over the file name. Likewise an `<?xml' or `<!DOCTYPE'
! declaration will give the buffer XML or SGML mode, based on the new
! var `magic-mode-alist'.
+++
! *** Major mode functions now run the new normal hook
! `after-change-major-mode-hook', at their very end, after the mode hooks.
! ---
! *** If a major mode function has a non-nil `no-clone-indirect'
! property, `clone-indirect-buffer' signals an error if you use
! it in that buffer.
+++
! *** Major modes can define `eldoc-documentation-function'
! locally to provide Eldoc functionality by some method appropriate to
! the language.
+++
! *** `define-derived-mode' by default creates a new empty abbrev table.
! It does not copy abbrevs from the parent mode's abbrev table.
+++
! *** The new function `run-mode-hooks' and the new macro `delay-mode-hooks'
! are used by `define-derived-mode' to make sure the mode hook for the
! parent mode is run at the end of the child mode.
! ** Minor mode changes:
+++
! *** `define-minor-mode' now accepts arbitrary additional keyword arguments
! and simply passes them to `defcustom', if applicable.
+++
! *** `minor-mode-list' now holds a list of minor mode commands.
---
! *** `define-global-minor-mode'.
! This is a new name for what was formerly called
! `easy-mmode-define-global-mode'. The old name remains as an alias.
! ** Command loop changes:
+++
! *** The new function `called-interactively-p' does what many people
! have mistakenly believed `interactive-p' did: it returns t if the
! calling function was called through `call-interactively'. This should
! only be used when you cannot solve the problem by adding a new
! INTERACTIVE argument to the command.
+++
! *** The function `commandp' takes an additional optional argument.
! If it is non-nil, then `commandp' checks for a function that could be
! called with `call-interactively', and does not return t for keyboard
! macros.
+++
! *** When a command returns, the command loop moves point out from
! within invisible text, in the same way it moves out from within text
! covered by an image or composition property.
! This makes it generally unnecessary to mark invisible text as intangible.
! This is particularly good because the intangible property often has
! unexpected side-effects since the property applies to everything
! (including `goto-char', ...) whereas this new code is only run after
! `post-command-hook' and thus does not care about intermediate states.
+++
! *** If a command sets `transient-mark-mode' to `only', that
! enables Transient Mark mode for the following command only.
! During that following command, the value of `transient-mark-mode'
! is `identity'. If it is still `identity' at the end of the command,
! the next return to the command loop changes to nil.
+++
! *** Both the variable and the function `disabled-command-hook' have
! been renamed to `disabled-command-function'. The variable
! `disabled-command-hook' has been kept as an obsolete alias.
+++
! *** `emacsserver' now runs `pre-command-hook' and `post-command-hook'
! when it receives a request from emacsclient.
! ** Minibuffer changes:
! +++
! *** 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. The keys in alists and hash tables can be either
! strings or symbols, which are automatically converted with to strings.
! +++
! *** The new macro `dynamic-completion-table' supports using functions
! as a dynamic completion table.
! (dynamic-completion-table FUN)
! FUN is called with one argument, the string for which completion is required,
! and it should return an alist containing all the intended possible
! completions. This alist can be a full list of possible completions so that
FUN
! can ignore the value of its argument. If completion is performed in the
! minibuffer, FUN will be called in the buffer from which the minibuffer was
! entered. `dynamic-completion-table' then computes the completion.
! +++
! *** The new macro `lazy-completion-table' initializes a variable
! as a lazy completion table.
! (lazy-completion-table VAR FUN &rest ARGS)
! If the completion table VAR is used for the first time (e.g., by passing VAR
! as an argument to `try-completion'), the function FUN is called with arguments
! ARGS. FUN must return the completion table that will be stored in VAR. If
! completion is requested in the minibuffer, FUN will be called in the buffer
! from which the minibuffer was entered. The return value of
! `lazy-completion-table' must be used to initialize the value of VAR.
! ** Lisp file loading changes:
! +++
! *** `load-history' can now have elements of the form (t . FUNNAME),
! which means FUNNAME was previously defined as an autoload (before the
! current file redefined it).
+++
! *** `load-history' now records (defun . FUNNAME) when a function is
! defined. For a variable, it records just the variable name.
+++
! *** The function symbol-file can now search specifically for function or
! variable definitions.
+++
! *** `provide' and `featurep' now accept an optional second argument
! to test/provide subfeatures. Also `provide' now checks `after-load-alist'
! and runs any code associated with the provided feature.
! ---
! *** The variable `recursive-load-depth-limit' has been deleted.
! Emacs now signals an error if the same file is loaded with more
! than 3 levels of nesting.
+++
! ** Byte compiler changes:
! *** The byte-compiler now displays the actual line and character
! position of errors, where possible. Additionally, the form of its
! warning and error messages have been brought more in line with the
! output of other GNU tools.
! *** The new macro `with-no-warnings' suppresses all compiler warnings
! inside its body. In terms of execution, it is equivalent to `progn'.
!
! *** You can avoid warnings for possibly-undefined symbols with a
! simple convention that the compiler understands. (This is mostly
! useful in code meant to be portable to different Emacs versions.)
! Write forms like the following, or code that macroexpands into such
! forms:
!
! (if (fboundp 'foo) <then> <else>)
! (if (boundp 'foo) <then> <else)
!
! In the first case, using `foo' as a function inside the <then> form
! won't produce a warning if it's not defined as a function, and in the
! second case, using `foo' as a variable won't produce a warning if it's
! unbound. The test must be in exactly one of the above forms (after
! macro expansion), but such tests can be nested. Note that `when' and
! `unless' expand to `if', but `cond' doesn't.
!
! *** `(featurep 'xemacs)' is treated by the compiler as nil. This
! helps to avoid noisy compiler warnings in code meant to run under both
! Emacs and XEmacs and can sometimes make the result significantly more
! efficient. Since byte code from recent versions of XEmacs won't
! generally run in Emacs and vice versa, this optimization doesn't lose
! you anything.
!
! *** The local variable `no-byte-compile' in elisp files is now obeyed.
!
! ---
! *** 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.
!
! ** Frame operations:
+++
! *** New functions `frame-current-scroll-bars' and
`window-current-scroll-bars'.
These functions return the current locations of the vertical and
horizontal scroll bars in a frame or window.
+++
! *** The new function `modify-all-frames-parameters' modifies parameters
! for all (existing and future) frames.
+++
! *** The new frame parameter `tty-color-mode' specifies the mode to use
! for color support on character terminal frames. Its value can be a
! number of colors to support, or a symbol. See the Emacs Lisp
! Reference manual for more detailed documentation.
+++
! *** When using non-toolkit scroll bars with the default width,
! the `scroll-bar-width' frame parameter value is nil.
! ** Mule changes:
+++
! *** Already true in Emacs 21.1, but not emphasized clearly enough:
! Multibyte buffers can now faithfully record all 256 character codes
! from 0 to 255. As a result, most of the past reasons to use unibyte
! buffers no longer exist. We only know of three reasons to use them
! now:
! 1. If you prefer to use unibyte text all of the time.
! 2. For reading files into temporary buffers, when you want to avoid
! the time it takes to convert the format.
! 3. For binary files where format conversion would be pointless and
! wasteful.
! ---
! *** set-buffer-file-coding-system now takes an additional argument,
! NOMODIFY. If it is non-nil, it means don't mark the buffer modified.
+++
! *** 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.)
---
! *** The new function `merge-coding-systems' fills in unspecified aspects
! of one coding system from another coding system.
! ---
! *** New coding system property `mime-text-unsuitable' indicates that
! the coding system's `mime-charset' is not suitable for MIME text
! parts, e.g. utf-16.
+++
! *** New function `decode-coding-inserted-region' decodes a region as if
! it is read from a file without decoding.
! ---
! *** New CCL functions `lookup-character' and `lookup-integer' access
! hash tables defined by the Lisp function `define-translation-hash-table'.
! ---
! *** New function quail-find-key returns a list of keys to type in the
! current input method to input a character.
! ** Mode line changes:
+++
! *** New function `format-mode-line'.
! This returns the mode-line or header-line of the selected (or a
! specified) window as a string with or without text properties.
+++
! *** The new mode-line construct `(:propertize ELT PROPS...)' can be
! used to add text properties to mode-line elements.
+++
! *** The new `%i' and `%I' constructs for `mode-line-format' can be used
! to display the size of the accessible part of the buffer on the mode
! line.
! ** Menu manipulation changes:
! ---
! *** To manipulate the File menu using easy-menu, you must specify the
! proper name "file". In previous Emacs versions, you had to specify
! "files", even though the menu item itself was changed to say "File"
! several versions ago.
! ---
! *** The dummy function keys made by easy-menu are now always lower case.
! If you specify the menu item name "Ada", for instance, it uses `ada'
! as the "key" bound by that key binding.
! This is relevant only if Lisp code looks for the bindings that were
! made with easy-menu.
---
! *** `easy-menu-define' now allows you to use nil for the symbol name
! if you don't need to give the menu a name. If you install the menu
! into other keymaps right away (MAPS is non-nil), it usually doesn't
! need to have a name.
!
! ** Operating system access:
+++
! *** The new primitive `get-internal-run-time' returns the processor
! run time used by Emacs since start-up.
! +++
! *** Functions `user-uid' and `user-real-uid' now return floats if the
! user UID doesn't fit in a Lisp integer. Function `user-full-name'
! accepts a float as UID parameter.
! +++
! *** New function `locale-info' accesses locale information.
! ---
! *** On MS Windows, locale-coding-system is used to interact with the OS.
! The Windows specific variable w32-system-coding-system, which was
! formerly used for that purpose is now an alias for locale-coding-system.
! ---
! *** New function `redirect-debugging-output' can be used to redirect
! debugging output on the stderr file handle to a file.
!
! ** Miscellaneous:
+++
! *** A number of hooks have been renamed to better follow the conventions:
! 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,
! x-lost-selection-hooks to x-lost-selection-functions,
! x-sent-selection-hooks to x-sent-selection-functions,
! delete-frame-hook to delete-frame-functions.
! In each case the old name remains as an alias for the moment.
! +++
! *** local-write-file-hooks is marked obsolete
!
! Use the LOCAL arg of `add-hook'.
---
! *** New function `x-send-client-message' sends a client message when
! running under X.
* Installation changes in Emacs 21.3
- [Emacs-diffs] Changes to emacs/etc/NEWS, (continued)
- [Emacs-diffs] Changes to emacs/etc/NEWS, Kim F . Storm, 2005/05/02
- [Emacs-diffs] Changes to emacs/etc/NEWS, Richard M . Stallman, 2005/05/02
- [Emacs-diffs] Changes to emacs/etc/NEWS, Richard M . Stallman, 2005/05/02
- [Emacs-diffs] Changes to emacs/etc/NEWS, Kim F . Storm, 2005/05/03
- [Emacs-diffs] Changes to emacs/etc/NEWS, Richard M . Stallman, 2005/05/04
- [Emacs-diffs] Changes to emacs/etc/NEWS, Daniel Pfeiffer, 2005/05/05
- [Emacs-diffs] Changes to emacs/etc/NEWS, Nick Roberts, 2005/05/06
- [Emacs-diffs] Changes to emacs/etc/NEWS, Eli Zaretskii, 2005/05/07
- [Emacs-diffs] Changes to emacs/etc/NEWS, Luc Teirlinck, 2005/05/07
- [Emacs-diffs] Changes to emacs/etc/NEWS, Richard M . Stallman, 2005/05/08
- [Emacs-diffs] Changes to emacs/etc/NEWS,
Richard M . Stallman <=
- [Emacs-diffs] Changes to emacs/etc/NEWS, Daniel Pfeiffer, 2005/05/13
- [Emacs-diffs] Changes to emacs/etc/NEWS, Richard M . Stallman, 2005/05/14
- [Emacs-diffs] Changes to emacs/etc/NEWS, Richard M . Stallman, 2005/05/14
- [Emacs-diffs] Changes to emacs/etc/NEWS, Richard M . Stallman, 2005/05/14
- [Emacs-diffs] Changes to emacs/etc/NEWS, Richard M . Stallman, 2005/05/14
- [Emacs-diffs] Changes to emacs/etc/NEWS, Richard M . Stallman, 2005/05/14
- [Emacs-diffs] Changes to emacs/etc/NEWS, Nick Roberts, 2005/05/16
- [Emacs-diffs] Changes to emacs/etc/NEWS, Juanma Barranquero, 2005/05/17
- [Emacs-diffs] Changes to emacs/etc/NEWS, Nick Roberts, 2005/05/17
- [Emacs-diffs] Changes to emacs/etc/NEWS, Kim F . Storm, 2005/05/17