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To:	Paul Haahr <haahr@mv.us.adobe.com>
Cc:	rc@hawkwind.utcs.toronto.edu
Subject: Re: a feature I wish rc had 
In-Reply-To: Your message of "Tue, 03 Nov 92 17:32:34 EST."
             <9211032232.AA02604@utopia.mv.us.adobe.com> 
Date:	Tue, 3 Nov 1992 17:43:28 -0500
From:	Mark-Jason Dominus <mjd@saul.cis.upenn.edu>


> 	save (*.[ch] - y.tab.c xxx.*)
> 
> note that, in this hypothetical, the things after the - are not glob
> expanded

Why not?

Consider a `set-subtract' command, which is a little like `echo'.

	set-subtract [foo]... - [bar]...

echoes all the words that are on the left of the `-' but not on the
right. Then instead of

> 	save (               *.[ch] - y.tab.c xxx.* )

use
	save `{ set-subtract *.[ch] - y.tab.c xxx.* }

The globbing is just what you want.