readme.mac

早期freebsd实现

/***************************************************************************
 * This program is Copyright (C) 1986, 1987, 1988 by Jonathan Payne.  JOVE *
 * is provided to you without charge, and with no warranty.  You may give  *
 * away copies of JOVE, including sources, provided that this notice is    *
 * included in all the files.                                              *
 ***************************************************************************/

Changes between 4.9 and 4.10:

  New features:
    1) Reshapeable windows with zoom boxes.
    2) Filename/directory name completion with macify OFF.
    3) Double click mouse to set the mark.
    4) Control-space and control-@ correctly send NUL on MacII/SE.
    5) Control-` fixed to send backquote char.
    6) Display update code fixed.
    
  Sources:
    1) Compiles under LSC 3.0. (Probably under 2.13 as well, but
       not tested with that version).
    2) Include files redone, with fewer total lines of code.
    3) No need to modify include files, unless NBUF changed.
    4) "keymaps.txt" is now "keys.txt".
    
  Planned:
    1) Recover command as separate application.
    2) Support for MPW compiler vers 2.02.
    
   
Introduction

This file contains a brief description of MacJove, along with
information necessary to make MacJove from the source files.
It is assumed that the reader is familiar with Jove from other
systems, and is somewhat familiar with the Macintosh as well. In
the future there may be a separate user's manual for MacJove: 
for the time being, the reader should refer to the Jove manual
for Unix users.

Description

MacJove is a direct port of Jove to the Macintosh, with the
overall structure, commands and key bindings left intact. In
addition, elements of the Macintosh user interface - menus,
window controls, and the mouse, have been integrated in a manner
consistent with the overall functioning of Jove.

While the integration of these tools into the Jove environment
is consistent and, to most users, familiar, Jove departs in
several places from "Macintosh User Interface Guidelines". Most
notably, the mouse is used to position the point only, not to
drag or select text, and the Jove buffer structure is not
integrated with the clipboard. Also, key bindings conform to
Jove/Emacs tradition, and not to Macintosh guidelines: i.e.
control (command)-N is next-line, not "NewFile". The reason for
these departures is that the majority of MacJove users are likely
to be those already familiar with Jove or other Emacs editors
on other systems, and for these users, consistency between machines
and operating systems is more important than fully exploiting
the features of a single system. There are numerous other text
editors which fully follow the Macintosh User Interface Guidelines.

MacJove retains most features of other Joves, but certain commands
cannot be implemented because of the Macintosh operating system.
Thus, there is no way to run a sub-process or a shell in a window,
because there are no shells to run on the Macintosh, and a program
(currently) can only transfer control to another program, not run
a child process. For similar reasons, commands dealing with mail,
with running make, and checking errors, are omitted.



                      Running MacJove

System Requirements

MacJove should run without difficulty on any Macintosh Plus, SE, or
Macintosh II, providing that the hierarchical file system (HFS) is used, and
assuming a reasonably current system file is used. An upgraded 512K Mac
(with 128K rom) should also work if there is enough memory.  MacJove was
developed on a Macintosh Plus and Macintosh II running system 4.2 and Finder
6.0., and has not been fully tested on earlier systems - however, it is
likely that it will run on system 3.2 and later versions. MacJove has been
used to a limited extent with Switcher and under Multifinder. In both cases,
it is important to reserve enough memory for MacJove, as discussed below.

MacJove, as compiled from the sources, uses memory as follows:

   Program Code     approx 116K
   Static Data      approx  20K
   Tempfile Cache           64K (heap)
                           ____
                           200K total before stack/heap considerations

To this must be added stack and heap space. A bare minimum for this is
probably 100K or so, but the usage will vary as buffers are created.  With
Jove, the file itself takes up space only in the tempfile and its cache, but
the buffer structure requires 3 pointers (12 bytes) for each line in the
file. For a reasonable editing session with files totalling, say 10000 to
20000 lines, this additional space can add up. For this reason, it is
unrealistic to expect to run Jove on a 512K system, unless a very small
system file is used, few, small files are edited each session, and the
tempfile cache is reduced (see cache size under Making Jove). You can
experiment with various memory allocations under Switcher and Multifinder to
see what works with your editing habits (backup your files first!), but a
realistic minimum is 400K - 500K and more is great.

When first using MacJove, and if memory space is questionable, SAVE YOUR
FILES FREQUENTLY. If it is necessary to edit many files, it is often better
to exit MacJove and restart once in a while, especially if there is a
question of limited memory.

Operation


Running MacJove is similar to other Macintosh applications, and should be
intuitive. You start up MacJove by either opening, or double-clicking,
the MacJove icon. If you have previously saved files created with MacJove,
double-clicking on them will also start up the program, and the files will
be put into buffers. Several files can be selected simultaneously by this
method. There is no current way to select command-line options with
MacJove, but this may change in the future.

The .joverc file, if used, must be present in the same directory as MacJove,
the "home" directory. The help file, "cmds.doc", must also be in this
directory. The tempfile, ".joveXXX", will be placed in whatever directory is
current when the tempfile is first opened - this may or may not be the home
directory, and may change in the future. The recover file, ".jrecXXX" is
placed in the home directory. While this file is created and updated as on
Unix versions of Jove, there is currently no "recover" program for MacJove.
Hopefully, this will be available soon.

MacJove can edit any text file on the Macintosh, whether created with
MacJove or another editor. It cannot be used to edit graphics material, and
graphics material cannot be inserted during operation of MacJove. Files
created with MacJove are of type 'TEXT' and of signature 'JV01'. This
signature is being registered with Apple, and may change if necessary. Note
that once MacJove files have been re-edited with another editor, they likely
will have new signatures, and double-clicking on them will start the other
editor, not MacJove.

The standard Macintosh keyboard is inadequate for MacJove (and most anything
else), so that it is necessary to change a couple of keys. The "`" key
becomes the ESCAPE key, since it is in the right place for one: to send a
real "'", hold the command key down while typing it. The command key is used
for a control key - unfortunately, the location of it is horrible for such a
purpose. On Macintosh SE and Macintosh II models, a real escape key exists,
and also a real control key. Note, however, that because of a small bug in
the keyboard encoding in MacJove, you cannot directly send a NUL (control-@)
with the control key. Typing command-@ or command-2 will still do this,
however.

During operation, you can use the keyboard as you would when running Jove on
any other system. However, many commands also have menu equivalents:  as
long as MacJove is waiting for a command, you can use either the keyboard or
the menus. Once you begin selecting a command with either the menus or the
keyboard, the other is locked out: thus, once you type control-X, MacJove
expects more characters, and will not let you choose menu items.  Also, if
you are prompted for input on the command line, the menus are locked out.
Regardless of how a command is begun, however, only the prompt line (message
line) is used for input: MacJove does not use dialog boxes, except under the
"About Jove" menu selection.

Commands listed in the menus are given exactly as their string name in
the command list, for example "write-file". In addition, variables are
listed under the "Set" menu. Variables are grouped by type. Non-boolean
variables are changed on the message line after being selected. Boolean
variables are marked with a check mark if on, and selecting them toggles
the value of the variable.

The "Buffer" menu is a special menu, whose action is different than the
others. The first entries on this menu are the major and minor modes of
operation, with those of the current buffer marked with check marks.
Clicking on a major mode will change the major mode of the current buffer to
that mode, while clicking on a minor mode will toggle that mode's status
(on/off) for the current buffer. Beneath this is a list of buffers, one for
each menu item, with the current buffer marked. Clicking on a buffer selects
that as the current buffer, and the active window will change accordingly.

Window controls (scroll bars) work as expected, and are simply bound to
the appropriate MacJove command. Occassionally the position of the
scroll bar may appear inaccurate, particularly with a small buffer.

Files and directories may be selected in two ways. The default method
is to use the message line to input filenames, and to change directories
using "cd". If the variable "macify" is set, however, filenames and
directories can also be set using the standard file dialogs familiar to
most Mac users. Filename paths are normally given via Unix conventions,
and not Macintosh conventions: i.e. directories are separated with "/"
and not ":". On the Buffer menu, however, filenames are listed with ":"
as the separation character, since "/" cannot be displayed in menu items.
It is not possible to back up directories beyond the volume level, so
there is not true "root". To change volumes (disks), macify must be on,
and the "Drive" selection used.

"Macify" only works for those commands which REQUIRE a file operation, such
as "visit-file", "insert-file", "write-file".  Operations which first look
in buffers for files, such as "window-find" and "find-file" never use the
standard file dialogs.

For a list of all commands and bindings, click on "About Jove" in the
Apple menu. In the future this may also support the help file.

                      Making MacJove

System Requirements