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Viper
*****

We believe that one or more of the following statements are adequate
descriptions of Viper:

     Viper Is a Package for Emacs Rebels;
     it is a VI Plan for Emacs Rescue
     and/or a venomous VI PERil.

   Technically speaking, Viper is a Vi emulation package for Emacs.  It
implements all Vi and Ex commands, occasionally improving on them and
adding many new features.  It gives the user the best of both worlds: Vi
keystrokes for editing combined with the power of the Emacs environment.

   Viper emulates Vi at several levels, from the one that closely
follows Vi conventions to the one that departs from many of them.  It
has many customizable options, which can be used to tailor Viper to the
work habits of various users.  This manual describes Viper,
concentrating on the differences from Vi and new features of Viper.

   Viper, formerly known as VIP-19, was written by Michael Kifer.  It
is based on VIP version 3.5 by Masahiko Sato and VIP version 4.4 by
Aamod Sane.  About 15% of the code still comes from those older
packages.

   Viper is intended to be usable without reading this manual -- the
defaults are set to make Viper as close to Vi as possible.  At startup,
Viper will try to set the most appropriate default environment for you,
based on your familiarity with Emacs.  It will also tell you the basic
GNU Emacs window management commands to help you start immediately.

   Although this manual explains how to customize Viper, some basic
familiarity with Emacs Lisp is a plus.

   It is recommended that you read the Overview node.  The other nodes
may be visited as needed.

   Comments and bug reports are welcome.  `kifer@cs.stonybrook.edu' is
the current address for Viper bug reports.  Please use the Ex command
`:submitReport' for this purpose.

Overview

Read for a smoother start

Improvements over Vi

New features, Improvements

Customization

How to customize Viper

Commands

Vi and Ex Commands

Key Index

Index of Vi and Ex Commands

Function Index

Index of Viper Functions

Variable Index

Index of Viper Variables

Package Index

Index of Packages Mentioned in this Document

Concept Index

Vi, Ex and Emacs concepts

Acknowledgments

GNU Free Documentation License

The license for this documentation.