jove.4

早期freebsd实现

The format of the mode line can be determined by setting this variable.
The items in the line are specified using a printf(3) format, with the
special things being marked as "%x".  Digits may be used between the
'%' and the 'x' to mean repeat that many times.
\&'x' may be:
.DS I
.ta .5i 1i 1.5i
	C	check for new mail, and displays "[New mail]" if there
		is any (see also the mail-check-interval and disable-biff
		variables)
	F	the current file name, with leading path stripped
	M	the current list of major and minor modes
	b	the current buffer name
	c	the fill character (-)
	d	the current directory
	e	end of string--this must be the last item in the string
	f	the current file name
	l	the current load average (updated automatically)
	m	the buffer-modified symbol (*)
	n	the current buffer number
	s	space, but only if previous character is not a space
	t	the current time (updated automatically)
	[ ]	the square brackets printed when in a recursive edit
	( )	items enclosed in %( ... %) will only be printed on
		the bottom mode line, rather than copied when the
		window is split
.DE
In addition, any other character is simply copied into the mode line.
Characters may be escaped with a backslash.  To get a feel for all
this, try typing "ESC X print mode-line" and compare the result with
your current mode line.
.dc "mode-line-should-standout" "(variable)"
If set, the mode line will be printed in reverse video, if your
terminal supports it.  The default for this variable is "off".
.dc "name-keyboard-macro" "Not Bound"
This copies the keyboard macro and gives it a name freeing up the
keyboard macro so you can define some more.  Keyboard macros with
their own names can be bound to keys just like built in commands
can.  See the
.IQ read-macros-file-file
and
.IQ write-macros-to-file
commands.
.dc "newline" "Return"
This divides the current line at point moving all the text to the
right of point down onto the newly created line.  Point moves down to
the beginning of the new line.
.dc "newline-and-backup" "C-O"
This divides the current line at point moving all the text to the
right of point down onto the newly created line.  The difference
between this and "newline" is that point does not move down to the
beginning of the new line.
.dc "newline-and-indent" "LineFeed"
This behaves the same was as Return does when in Auto Indent mode.
This makes Auto Indent mode obsolete but it remains in the name of
backward compatibility.
.dc "next-error" "C-X C-N"
This moves to the next error in the list of errors that were parsed
with
.IQ parse-errors
or
.IQ parse-special-errors.
In one window the list
of errors is shown with the current one always at the top.  In another
window is the file that contains the error.  Point is positioned in
this window on the line where the error occurred.
.dc "next-line" "C-N"
This moves down to the next line.
.dc "next-page" "C-V"
This displays the next page of the buffer by taking the bottom line of
the window and redrawing the window with it at the top.  If there isn't
another page in the buffer \s-2JOVE\s0 rings the bell.  If a numeric argument
is supplied the screen is scrolled up that many lines; if the argument
is negative the screen is scrolled down.
.dc "next-window" "C-X N"
This moves into the next window.  Windows live in a circular list so
when you're in the bottom window and you try to move to the next one
you are moved to the top window.  It is an error to use this command
with only one window.
.dc "number-lines-in-window" "Not Bound"
This displays the line numbers for each line in the buffer being
displayed.  The number isn't actually part of the text; it's just
printed before the actual buffer line is.  To turn this off you run
the command again; it toggles.
.dc "over-write-mode" "Not Bound"
This turns Over Write mode on (or off if it's currently on) in the selected
buffer.  When on, this mode changes the way the self-inserting characters
work.  Instead of inserting themselves and pushing the rest of the line over
to the right, they replace or over-write the existing character.  Also,
Rubout replaces the character before point with a space instead of deleting
it.  When Over Write mode is on "OvrWt" is displayed on the mode line.
.dc "page-next-window" "ESC C-V"
This displays the next page in the next window.  This is exactly the
same as "C-X N C-V C-X P".
.dc "paren-flash-delay" "(variable)"
How long, in tenths of seconds, \s-2JOVE\s0 should pause on a matching
parenthesis in
.IQ Show Match
mode.  The default is 5.
.dc "parse-errors" "Not Bound"
This takes the list of C compilation errors (or output from another program
in the same format) in the current buffer and parses them for use with the
.IQ next-error
and
.IQ previous-error
and
.IQ current-error
commands.
This is a very useful tool and helps with compiling C programs and when used
in conjunction with the "grep" UNIX command very helpful in making changes
to a bunch of files.  This command understands errors produced by cc, cpp,
and lint; plus any other program with the same format (e.g., "grep -n").
\s-2JOVE\s0 visits each file that has an error and remembers each line that
contains an error.  It doesn't matter if later you insert or delete
some lines in the buffers containing errors; \s-2JOVE\s0 remembers where
they are regardless.
.IQ next-error
is automatically executed after one
of the parse commands, so you end up at the first error.
.dc "parse-special-errors" "Not Bound"
This parses errors in an unknown format.  Error parsing works with
regular expression search strings with \\('s around the the file name
and the line number.  So, you can use
.IQ parse-special-errors
to parse
lines that are in a slightly different format by typing in your own
search string.  If you don't know how to use regular expressions you
can't use this command.
.dc "parse-spelling-errors-in-buffer" "Not Bound"
This parses a list of words in the current buffer and looks them up in
another buffer that you specify.  This will probably go away soon.
.dc "pause-jove" "ESC S"
This stops \s-2JOVE\s0 and returns control to the parent shell.  This
only works for users using the C-shell, and on systems that have the
job control facility.  To return to \s-2JOVE\s0 you type "fg" to the C-shell.
.dc "physical-tabstop" "(variable)"
How many spaces your terminal prints when it prints a tab character.
.dc "pop-mark" "Not Bound"
This gets executed when you run
.IQ set-mark
with a numeric argument.
\s-2JOVE\s0 remembers the last 16 marks and you use
.IQ pop-mark
to go
backward through the ring of marks.  If you execute "
.IQ pop-mark
enough
times you will eventually get back to where you started.
.dc "popd" "Not Bound"
This pops one entry off the directory stack.  Entries are pushed with
the
.IQ pushd
command.  The names were stolen from the C-shell and the
behavior is the same.
.dc "previous-error" "C-X C-P"
This is the same as
.IQ next-error
except it goes to the previous error.
See
.IQ next-error
for documentation.
.dc "previous-line" "C-P"
This moves up to the previous line.
.dc "previous-page" "ESC V"
This displays the previous page of the current buffer by taking the top
line and redrawing the window with it at the bottom.  If a numeric
argument is supplied the screen is scrolled down that many lines; if
the argument is negative the screen is scrolled up.
.dc "previous-window" "C-X P and C-X O"
This moves into the next window.  Windows live in a circular list so
when you're in the top window and you try to move to the previous one
you are moved to the bottom window.  It is an error to use this command
with only one window.
.dc "print" "Not Bound"
This prints the value of a \s-2JOVE\s0 variable.
.dc "print-message" "Not Bound"
This command prompts for a message, and then prints it on the bottom
line where \s-2JOVE\s0 messages are printed.
.dc "process-bind-to-key" "Not Bound"
This command is identical to bind-to-key, except that it only affects
your bindings when you are in a buffer attached to a process.  When
you enter the process buffer, any keys bound with this command will
automatically take their new values.  When you switch to a non-process
buffer, the old bindings for those keys will be restored.  For example,
you might want to execute
.DS I
process-bind-to-key stop-process ^Z
process-bind-to-key interrupt-process ^C
.DE
Then, when you start up an interactive process and switch into that
buffer, C-Z will execute stop-process and C-C will execute interrupt-
process.  When you switch back to a non-process buffer, C-Z will go
back to executing scroll-up (or whatever you have it bound to).
.dc "process-newline" "Return"
This this only gets executed when in a buffer that is attached to an
interactive-process.  \s-2JOVE\s0 does two different things depending on where
you are when you hit Return.  When you're at the end of the I-Process
buffer this does what Return normally does, except it also makes the
line available to the process.  When point is positioned at some other
position that line is copied to the end of the buffer (with the prompt
stripped) and point is moved there with it, so you can then edit that
line before sending it to the process.  This command
.IQ must
be bound
to the key you usually use to enter shell commands (Return), or else
you won't be able to enter any.
.dc "process-prompt" (variable)
What a prompt looks like from the i-shell and i-shell-command
processes.  The default is "% ", the default C-shell prompt.  This is
actually a regular expression search string.  So you can set it to be
more than one thing at once using the \\| operator.  For instance, for
LISP hackers, the prompt can be
.DS
"% \\|-> \\|<[0-9]>: ".
.DE
.dc "push-shell" "Not Bound"
This spawns a child shell and relinquishes control to it.  This works
on any version of UNIX, but this isn't as good as
.IQ pause-jove
because
it takes time to start up the new shell and you get a brand new
environment every time.  To return to \s-2JOVE\s0 you type "C-D".
.dc "pushd" "Not Bound"
This pushes a directory onto the directory stack and cd's into it.  It
asks for the directory name but if you don't specify one it switches
the top two entries no the stack.  It purposely behaves the same as
C-shell's
.IQ pushd.
.dc "pwd" "Not Bound"
This prints the working directory.
.dc "quadruple-numeric-argument" "C-U"
This multiplies the numeric argument by 4.  So, "C-U C-F" means
forward 4 characters and "C-U C-U C-N" means down 16 lines.
.dc "query-replace-string" "ESC Q"
This replaces the occurrences of a specified string with a specified
replacement string.  When an occurrence is found point is moved to it
and then \s-2JOVE\s0 asks what to do.  The options are:
.DS I
.ta \w'Rubout111'u
Space	to replace this occurrence and go on to the next one.
Period	to replace this occurrence and then stop.
Rubout	to skip this occurrence and go on to the next one.
C-R	to enter a recursive edit.  This lets you temporarily
	suspend the replace, do some editing, and then return
	to continue where you left off.  To continue with the
	Query Replace type "C-X C-C" as if you were trying to
	exit \s-2JOVE\s0.  Normally you would but when you are in a
	recursive edit all it does is exit that recursive
	editing level.
C-W	to delete the matched string and then enter a recursive
	edit.
U	to undo the last replacement.
P or !	to go ahead and replace the remaining occurrences without
	asking.
Return	to stop the Query Replace.
.DE
The search for occurrences starts at point and goes to the end of the
buffer, so to replace in the entire buffer you must first go to the
beginning.
.dc "quit-process" "Not Bound"
This is the same as typing "C-\\" (the Quit character) to a normal UNIX
process, except it sends it to the current process in \s-2JOVE\s0.  This is
only for versions of \s-2JOVE\s0 that have the interactive processes feature.
This only works when you are inside a buffer that's attached to a
process.
.dc "quoted-insert" "C-Q"
This lets you insert characters that normally would be executed as
other \s-2JOVE\s0 commands.  For example, to insert "C-F" you type "C-Q C-F".
.dc "read-word-abbrev-file" "Not Bound"
This reads a specified file that contains a bunch of abbreviation
definitions, and makes those abbreviations available.  If the selected
buffer is not already in Word Abbrev mode this command puts it in
that mode.
.dc "read-macros-from-file" "Not Bound"
This reads the specified file that contains a bunch of macro
definitions, and defines all the macros that were currently defined
when the file was created.  See
.IQ write-macros-to-file