"In this series of articles, we'll look at the most
popular modern variant of vi, the Vim editor, and at the simple yet
extremely powerful scripting language that Vim provides.
"This first article explores the basic building blocks of Vim
scripting: variables, values, expressions, simple flow control, and
a few of Vim's numerous utility functions.
"I'll assume that you already have access to Vim and are
familiar with its interactive features. If that's not the case,
some good starting points are Vim's own Web site and various online
resources and hardcopy books, or you can simply type :help inside
Vim itself. See the Resources section for links.
"Unless otherwise indicated, all the examples in this series of
articles assume you're using Vim version 7.2 or higher. You can
check which version of Vim you're using by invoking the editor like
"or by typing :version within Vim itself. If you're using an
older incarnation of Vim, upgrading to the latest release is
strongly recommended, as previous versions do not support many of
the features of Vimscript that we'll be exploring. The Resources
section has a link to download and upgrade Vim."