RE: highlight current line when Emacs is idle

[Drew Adams]

Yes, your code does some of what Rick Bielawski's library column-marker.el
does. If you are interested, his code is here:
http://www.emacswiki.org/cgi-bin/wiki/column-marker.el.

My suggestion was to use such a feature with an idle timer, to show the
column after a certain number of seconds. I use Rick's code to do that, but
your's should work as well.

    > A follow-on to that follow-on: Perhaps optionally highlight
    > the current column as well.

    How about this one?
    ;;; hl-column.el --- highlight the current column
    ;; Copyright 2004 2005 Masatake YAMATO
    ;;  This is the column version of hl-line.el.