onews

windows版本的emacs

timer becomes ripe, the action is to call FUNCTION with arguments
ARGS.

Emacs becomes idle whenever it finishes executing a keyboard or mouse
command.  It remains idle until it receives another keyboard or mouse
command.

REPEAT, if non-nil, means this timer should be activated again each
time Emacs becomes idle and remains idle for SECS seconds The timer
does not repeat if Emacs *remains* idle; it runs at most once after
each time Emacs becomes idle.

If REPEAT is nil, the timer runs just once, the first time Emacs is
idle for SECS seconds.

*** post-command-idle-hook is now obsolete; you shouldn't use it at
all, because it interferes with the idle timer mechanism.  If your
programs use post-command-idle-hook, convert them to use idle timers
instead.

*** y-or-n-p-with-timeout lets you ask a question but give up if
there is no answer within a certain time.

  (y-or-n-p-with-timeout PROMPT SECONDS DEFAULT-VALUE)

asks the question PROMPT (just like y-or-n-p).  If the user answers
within SECONDS seconds, it returns the answer that the user gave.
Otherwise it gives up after SECONDS seconds, and returns DEFAULT-VALUE.

** Minor change to `encode-time': you can now pass more than seven
arguments.  If you do that, the first six arguments have the usual
meaning, the last argument is interpreted as the time zone, and the
arguments in between are ignored.

This means that it works to use the list returned by `decode-time' as
the list of arguments for `encode-time'.

** The default value of load-path now includes the directory
/usr/local/share/emacs/VERSION/site-lisp In addition to
/usr/local/share/emacs/site-lisp.  You can use this new directory for
site-specific Lisp packages that belong with a particular Emacs
version.

It is not unusual for a Lisp package that works well in one Emacs
version to cause trouble in another.  Sometimes packages need updating
for incompatible changes; sometimes they look at internal data that
has changed; sometimes the package has been installed in Emacs itself
and the installed version should be used.  Whatever the reason for the
problem, this new feature makes it easier to solve.

** When your program contains a fixed file name (like .completions or
.abbrev.defs), the file name usually needs to be different on operating
systems with limited file name syntax.

Now you can avoid ad-hoc conditionals by using the function
convert-standard-filename to convert the file name to a proper form
for each operating system.  Here is an example of use, from the file
completions.el:

(defvar save-completions-file-name
        (convert-standard-filename "~/.completions")
  "*The filename to save completions to.")

This sets the variable save-completions-file-name to a value that
depends on the operating system, because the definition of
convert-standard-filename depends on the operating system.  On
Unix-like systems, it returns the specified file name unchanged.  On
MS-DOS, it adapts the name to fit the limitations of that system.

** The interactive spec N now returns the numeric prefix argument
rather than the raw prefix argument.  (It still reads a number using the
minibuffer if there is no prefix argument at all.)

** When a process is deleted, this no longer disconnects the process
marker from its buffer position.

** The variable garbage-collection-messages now controls whether
Emacs displays a message at the beginning and end of garbage collection.
The default is nil, meaning there are no messages.

** The variable debug-ignored-errors specifies certain kinds of errors
that should not enter the debugger.  Its value is a list of error
condition symbols and/or regular expressions.  If the error has any
of the condition symbols listed, or if any of the regular expressions
matches the error message, then that error does not enter the debugger,
regardless of the value of debug-on-error.

This variable is initialized to match certain common but uninteresting
errors that happen often during editing.

** The new function error-message-string converts an error datum
into its error message.  The error datum is what condition-case
puts into the variable, to describe the error that happened.

** Anything that changes which buffer appears in a given window
now runs the window-scroll-functions for that window.

** The new function get-buffer-window-list returns a list of windows displaying
a buffer.  The function is called with the buffer (a buffer object or a buffer
name) and two optional arguments specifying the minibuffer windows and frames
to search.  Therefore this function takes optional args like next-window etc.,
and not get-buffer-window.

** buffer-substring now runs the hook buffer-access-fontify-functions,
calling each function with two arguments--the range of the buffer
being accessed.  buffer-substring-no-properties does not call them.

If you use this feature, you should set the variable
buffer-access-fontified-property to a non-nil symbol, which is a
property name.  Then, if all the characters in the buffer range have a
non-nil value for that property, the buffer-access-fontify-functions
are not called.  When called, these functions should put a non-nil
property on the text that they fontify, so that they won't get called
over and over for the same text.

** Changes in lisp-mnt.el

*** The lisp-mnt package can now recognize file headers that are written
in the formats used by the `what' command and the RCS `ident' command:

;; @(#) HEADER: text
;; $HEADER: text $

in addition to the normal

;; HEADER: text

*** The commands lm-verify and lm-synopsis are now interactive.  lm-verify
checks that the library file has proper sections and headers, and
lm-synopsis extracts first line "synopsis'"information.



* Editing Changes in Emacs 19.30.

** Be sure to recompile your byte-compiled Emacs Lisp files
if you last compiled them with Emacs 19.28 or earlier.
You can use M-x byte-force-recompile to recompile all the .elc files
in a specified directory.

** Emacs now provides multiple-frame support on Windows NT
and Windows 95.

** M-x column-number-mode toggles a minor mode which displays
the current column number in the mode line.

** Line Number mode is now enabled by default.

** M-x what-line now displays the line number in the accessible
portion of the buffer as well as the line number in the full buffer,
when narrowing is in effect.

** If you type a M-x command that has an equivalent key binding,
the equivalent is shown in the minibuffer before the command executes.
This feature is enabled by default for the sake of beginning users.
You can turn the feature off by setting suggest-key-bindings to nil.

** The menu bar is now visible on text-only terminals.  To choose a
command from the menu bar when you have no mouse, type M-`
(Meta-Backquote) or F10.  To turn off menu bar display,
do (menu-bar-mode -1).

** Whenever you invoke a minibuffer, it appears in the minibuffer
window that the current frame uses.

Emacs can only use one minibuffer window at a time.  If you activate
the minibuffer while a minibuffer window is active in some other
frame, the outer minibuffer window disappears while the inner one is
active.

** Echo area messages always appear in the minibuffer window that the
current frame uses.  If a minibuffer is active in some other frame,
the echo area message does not hide it even temporarily.

** The minibuffer now has a menu-bar menu.  You can use it to exit or
abort the minibuffer, or to ask for completion.

** Dead-key and composite character processing is done in the standard
X11R6 manner (through the default "input method" using the
/usr/lib/X11/locale/*/Compose databases of key combinations).  I.e. if
it works in xterm, it should also work in emacs now.

** Mouse changes

*** You can now use the mouse when running Emacs in an xterm.
Use M-x xterm-mouse-mode to let emacs take control over the mouse.

*** C-mouse-1 now once again provides a menu of buffers to select.
S-mouse-1 is now the way to select a default font for the frame.

*** There is a new mouse-scroll-min-lines variable to control the
minimum number of lines scrolled by dragging the mouse outside a
window's edge.

*** Dragging mouse-1 on a vertical line that separates windows
now moves the line, thus changing the widths of the two windows.
(This feature is available only if you don't have vertical scroll bars.
If you do use them, a scroll bar separates two side-by-side windows.)

*** Double-click mouse-1 on a character with "symbol" syntax (such as
underscore, in C mode) selects the entire symbol surrounding that
character.  (Double-click mouse-1 on a letter selects a whole word.)

** When incremental search wraps around to the beginning (or end) of
the buffer, if you keep on searching until you go past the original
starting point of the search, the echo area changes from "Wrapped" to
"Overwrapped".  That tells you that you are revisiting matches that
you have already seen.

** Filling changes.

*** If the variable colon-double-space is non-nil, the explicit fill
commands put two spaces after a colon.

*** Auto-Fill mode now supports Adaptive Fill mode just as the
explicit fill commands do.  The variable adaptive-fill-regexp
specifies a regular expression to match text at the beginning of
a line that should be the fill prefix.

*** Adaptive Fill mode can take a fill prefix from the first line of a
paragraph, *provided* that line is not a paragraph-starter line.

Paragraph-starter lines are indented lines that start a new
paragraph because they are indented.  This indentation shouldn't
be copied to additional lines.

Whether indented lines are paragraph lines depends on the value of the
variable paragraph-start.  Some major modes set this; you can set it
by hand or in mode hooks as well.  For editing text in which paragraph
first lines are not indented, and which contains paragraphs in which
all lines are indented, you should use Indented Text mode or arrange
for paragraph-start not to match these lines.

*** You can specify more complex ways of choosing a fill prefix
automatically by setting `adaptive-fill-function'.  This function
is called with point after the left margin of a line, and it should
return the appropriate fill prefix based on that line.
If it returns nil, that means it sees no fill prefix in that line.

** Gnus changes.

Gnus, the Emacs news reader, has been rewritten and expanded.  Most
things that worked with the old version should still work with the new
version.  Code that relies heavily on Gnus internals is likely to
fail, though.

*** Incompatibilities with the old GNUS.

**** All interactive commands have kept their names, but many internal
functions have changed names.

**** The summary mode gnus-uu commands have been moved from the `C-c
C-v' keymap to the `X' keymap.

**** There can now be several summary buffers active at once.
Variables that are relevant to each summary buffer are buffer-local to
that buffer.

**** Old hilit code doesn't work at all.  Gnus performs its own
highlighting based not only on what's visible in the buffer, but on
other data structures.

**** Old packages like `expire-kill' will no longer work.  

**** `C-c C-l' in the group buffer no longer switches to a different
buffer, but instead lists killed groups in the group buffer.

*** New features.

**** The look of all buffers can be changed by setting format-like
variables.
 
**** Local spool and several NNTP servers can be used at once.

**** Groups can be combined into virtual groups.

**** Different mail formats can be read much the same way as one would
read newsgroups.  All the mail backends implement mail expiry schemes.

**** Gnus can use various strategies for gathering threads that have
lost their roots (thereby gathering loose sub-threads into one thread)
or it can go back and retrieve enough headers to build a complete
thread.

**** Killed groups can be read.

**** Gnus can do partial group updates - you do not have to retrieve
the entire active file just to check for new articles in a few groups.

**** Gnus implements a sliding scale of subscribedness to groups.

**** You can score articles according to any number of criteria.  You
can get Gnus to score articles for you using adaptive scoring.

**** Gnus maintains a dribble buffer that is auto-saved the normal
Emacs manner, so it should be difficult to lose much data on what you
have read if your machine should go down.

**** Gnus now has its own startup file (`.gnus.el') to avoid
cluttering up the `.emacs' file.

**** You can set the process mark on both groups and articles and
perform operations on all the marked items.

**** You can grep through a subset of groups and create a group from
the results.

**** You can list subsets of groups using matches on group names or
group descriptions.

**** You can browse foreign servers and subscribe to groups from those
servers.

**** Gnus can pre-fetch articles asynchronously on a second connection
to the servers.

**** You can cache articles locally.

**** Gnus can fetch FAQs to and descriptions of groups.

**** Digests (and other files) can be used as the basis for groups.

**** Articles can be highlighted and customized.