http://www.vim.org/tips/tip.php?tip_id=12
created: February 24, 2001 18:02
complexity: basic
author: Yegappan
as of Vim: 5.7
To insert space characters whenever the tab key is pressed, set the
'expandtab' option:
set expandtab
With this option set, if you want to enter a real tab charac ...

2007-11-14