If anyone's interested, here is my Emacs configuration:
[
files/emacs-configuration]
It's not fancy enough for me to post screenshots of it, but I'll explain it
instead. It highlights long lines, tab characters, trailing spaces (empty
spaces) at the end of a line (don't you just hate wasting your spaces?) and a
few extra goodies, such as line numbering and highlighting of column 72. It
depends on a few extra files, though, which can be found here:
linum.el:
http://stud4.tuwien.ac.at/~e0225855/linum/linum.html
column-marker.el:
http://www.emacswiki.org/cgi-bin/emacs/download/column-marker.el
Also, in order to get linum to work in your mode, you need to type:
M-x linum-mode