people who use variable and function names such as $a, @b, %c and &d and the like.
Those are okay if they're lexically scoped in a
block that fits on half of the screen all at once.
(Otherwise, you're spot on, of course.) I say half
of the screen, of course, so that you can look at
two pieces of code at once
(e.g., to view a routine and where it is called).
No. I don't use vi, but it at least has some basic
functionality. It's not scriptable, so it's not
good for really serious use, but it can get simple
jobs done in a pinch, unlike most other so-called
text editors (EDIT, Notepad, SimpleText, TPU, ...).
There is however, on a related note, a special
judgement reserved for people who release operating
systems that don't include basic things like a decent
text editor, perl, basic network utils (ping,
traceroute, wget), and a compiler. (You're
probably okay if it's on the CD but not installed
by default; it's not including it at all that gets
you the extra bonus warmth.)