Here's a bit of clean up.  Most of it based on feedback from Oliver, including
the style and screendir command to remove dependencies on sed&awk.  Also, I've
made some improvements in arg handling for some flags.
-FR

ps it would nice if there was some sort of translation chart of sed/awk/perl
transformations into zsh parameter expressions...  i tend to find reading
exisiting expressions very difficult.  they contain lot's of grouping& special
syntax characters and no commenting...  the worst of lisp and regexs rolled
into one...
--- Felix Rosencrantz <f_rosencrantz@yahoo.com> wrote:
> A version of this has been shipping with screen for a while now.  Just adding
> it to the zsh distribution.

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