Text Editors

[Josh Charles]

I realize I could be initiating a religious war here, but I'm at my
wits end.  I've been working in Ruby lately, which has been going
really well, but I'm having trouble finding an editor that fits me
needs (or wants, I guess).

Here's what I'm looking for:

Syntax Highlighting
Line Numbers
File Browser that automatically updates with file system changes while
the program is running
Some Code Completion (not neccessary, but nice)

It seems like these are easy requests, but it's the file browser that
keeps killing off editors.  I've tried both the EMACS and VI Rudy
plugins and found both to be lacking.  Not to mention the extremely
unintuitive nature of both editors (to my mind at least).

For Code completion, I'm just looking for simplicity, really.  For
example, when I time a ' " ' just add the closing one.  Automatic tabs
is another completion feature that is really handy.

I've found TextMate, which only runs on Mac OS X.  It fits my needs
perfectly, but the mac I have access to is extremely slow, and I'm
probably not going to have access to it for very long.

Does anyone know of any editor that can meet my needs?  It doesn't
matter what platform of the three (Linux, Mac OS X, or Windows).  I've
tried to many and google has long ago quit spitting out good results.

Thanks for your time,
Josh