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201 lines
8.0 KiB
Plaintext
# @(#)README 8.86 (Berkeley) 8/17/94
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This is the README for version 1.34 of nex/nvi, a freely redistributable
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replacement for the Berkeley ex and vi text editors. The compressed or
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gzip'd archives for this and future versions, can be retrieved by using
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anonymous ftp to ftp.cs.berkeley.edu, from the file ucb/4bsd/nvi.tar.Z,
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or ucb/4bsd/nvi.tar.gz.
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If you have any questions about nvi, or problems making it work, please
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contact me by electronic mail at one of the following addresses:
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uunet!bostic
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bostic@cs.berkeley.edu
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Keith Bostic
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=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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o Redistribution:
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This software is copyrighted by the The Regents of the University of
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California, but may be freely redistributed (or sold, or used to line
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your birdcage) under the following conditions:
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/*-
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* Copyright (c) 1991, 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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o Credit where it's due:
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This software was originally derived from software contributed
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to the University of California, Berkeley by Steve Kirkendall,
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the author of the vi clone elvis. Without his work, this work
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would have been far more difficult.
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POSIX 1003.2 style regular expression support is courtesy of
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Henry Spencer, for which I am *very* grateful.
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The curses library was originally done by Ken Arnold. Scrolling
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and general reworking for 4.4BSD was done by Elan Amir.
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o From the original vi acknowledgements, by William Joy and Mark Horton:
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Bruce Englar encouraged the early development of this display
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editor. Peter Kessler helped bring sanity to version 2's
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command layout. Bill Joy wrote versions 1 and 2.0 through 2.7,
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and created the framework that users see in the present editor.
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Mark Horton added macros and other features and made the editor
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work on a large number of terminals and Unix systems.
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o And...
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The financial support of UUNET Communications Services is gratefully
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acknowledged.
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=-=-=-=-=-=-=-=-=-=-=
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o Status:
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This software is in beta test, and it's pretty stable. Almost all of
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the historic functionality in ex/vi is there, the only major missing
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pieces are open mode and the lisp option. (Also, the options hardtabs,
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optimize, redraw, and slowopen are recognized, but ignored.)
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Nvi is mostly 8-bit clean. This isn't difficult to fix, and was left
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in during initial development to keep things simple. Wide character
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support will be integrated at the same time that it is made fully 8-bit
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clean.
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There aren't a lot of new features in nex/nvi, but there are a few things
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you might like. The "Additional Features" section of the reference page
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(USD.doc/vi.ref/vi.ref.txt, USD.doc/vi.ref/vi.ref.ps) has more information.
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=-=-=-=-=-=-=-=-=-=-=
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o Porting information:
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The directory "PORT" has directories for specific OS/machine combinations,
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including V7-style Makefiles, for building nex/nvi on different machines.
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See the file PORT/README for detailed information.
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=-=-=-=-=-=-=-=-=-=-=
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o Debugging:
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Code fixes are appreciated, of course, but if you can't provide them,
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please email me as much information as you can as to how to reproduce
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the bug, and I'll try to fix it locally. Stack traces of core dumps
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are only rarely helpful -- an example file with a set of keystrokes that
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causes the problem is almost invariably necessary.
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Please include the following in the bug report;
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o The version of nvi you're running (use :version to get it).
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o The row/column dimensions of the screen (80 x 32).
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o Unless you're confident that they're not part of the problem,
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your startup files (.exrc, .nexrc) and the environment variable
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(EXININT, NEXINIT) values. (Cutting and pasting the output
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of ":set all" is usually sufficient.)
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If you're running a memory checker (e.g. Purify) on nvi, you will want
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to recompile everything with "-DPURIFY" in the CFLAGS, first. By
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default, allocated pages are not initialized by the DB code, and they
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will show up as reads of uninitialized memory in the buffer write routines.
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=-=-=-=-=-=-=-=-=-=-=
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o Directory layout:
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nvi/USD.doc:
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Ex/vi documentation, both historic and current.
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edit/ Roff source for "Edit: A tutorial", USD:14 in the
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4.3BSD manuals.
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ex/ Roff source for "Ex Reference Manual -- Version
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3.7", USD:16 in the 4.3BSD manuals.
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vi/ Roff source for "An Introduction to Display
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Editing with Vi", USD:15 in the 4.3BSD manuals.
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Includes the "Vi Quick Reference" card.
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vi.man/ Manual page for nex/nvi; an updated version of
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the document distributed with 4.4BSD-Lite.
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vi.ref/ Reference document for nex/nvi; an updated version
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of the document distributed with 4.4BSD-Lite.
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nvi/common:
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Source files for pieces of code that are shared by all the editors,
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like searching and logging code or code translating line numbers
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into requests to the dbopen(3) database code. It also has the
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interface code for modifying "records" in the underlying database.
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nvi/docs:
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Random nvi documentation:
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README -- Nvi main README file.
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bugs.current -- Major known bugs in the current nvi.
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changelog -- Log of changes from version to version.
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features -- Todo list, suggested features list.
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internals/
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autowrite -- Vi autowrite option discussion.
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gdb.script -- GDB debugging scripts.
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input -- Vi maps, executable buffers, and input discussion.
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quoting -- Vi quoting discussion.
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structures -- Out-of-date nvi internal structure description.
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tutorial/ -- Historic vi tutorial(s), of unknown quality.
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nvi/ex:
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The ex source code. Because vi has the colon command, lots of
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this code is used by vi. Generally, if functionality is shared
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by both ex and vi, it's in nvi/ex. If it's vi only, it's in
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nvi/vi. Files are generally named by the command(s) they support,
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but occasionally with a name that describes their functionality.
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nvi/install:
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Things to install on the local system.
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recover.script -- Vi recovery script.
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nvi/PORT:
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Porting directories, one per OS/architecture combination. See
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nvi/PORT/README for porting information.
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curses/ -- 4.4BSD curses implementation
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db/ -- 4.4BSD DB routines.
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regex/ -- Henry Spencer's POSIX.2 RE support.
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nvi/sex:
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The screen support for the ex editor.
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nvi/svi:
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The screen support for a curses based vi editor.
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nvi/vi:
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The vi source code.
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nvi/xaw:
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Place reserved for an X11 (Athena Widget) screen.
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