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From: malte@techfak.uni-bielefeld.de
To: rc@hawkwind.utcs.toronto.edu
Subject: Re: set subtract 
Date: Wed, 4 Nov 1992 07:45:00 -0500
Message-ID: <9211041245.AA17936@dahlie.techfak.uni-bielefeld.de> (raw)
In-Reply-To: <cks@hawkwind.utcs.toronto.edu>

	
	 The problem with a set-subtract function is that it will loose quoting
	information if it's used as 'foo `{set-sub ....}', and you thus need to
	have it passed variable names to work on. But then you can't just use
	this on a command line; you have to build lists beforehand. About
	half the time I'd like to use this is on command lines, so I keep
	wishing for a better solution.
	
		- cks

Applause, applause!

I'd vote for making such a function built into rc to avoid meta character
trouble, the way the ~ operator does it.
A related builtin I always wanted to have:

	idx = `{ index list_of_patterns list_to_search_in }

This should return a list of indices of the search patterns in the second list.

	; echo `{ index a ( a b c a ) }
	1 4
	;

Malte



  parent reply index

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1992-11-03 23:44 byron
1992-11-04  0:42 ` Chris Siebenmann
1992-11-04 14:12 rsalz
1992-11-04 14:25 malte
1997-09-17 15:56 are there any patches which add ~ expansion to rc Joseph Skinner
1997-09-17 21:56 ` Scott Schwartz
1997-09-17 22:08 ` Mark K. Gardner
1997-09-18 23:26 Chris Siebenmann
     [not found] ` <cks@hawkwind.utcs.toronto.edu>
1992-06-04 10:05   ` $pid malte
1992-11-04 12:45   ` malte [this message]
1992-11-06 12:03   ` rc and signal handlers malte
1997-09-19 17:21   ` are there any patches which add ~ expansion to rc Jeremy Fitzhardinge
2001-10-24  3:25   ` Beta release rc-1.6b3 available Chris Siebenmann
2001-10-24  3:41     ` Scott Schwartz
2000-04-26 15:02 building rc on QNX4 Sam Roberts
2000-04-27 16:56 Scott Schwartz
2000-04-27 20:41 ` Sam Roberts
2000-04-28  7:28   ` vrl (was: Re: building rc on QNX4) Gert-Jan Vons
2000-04-28 18:38     ` Sam Roberts
2000-05-02  8:16       ` Gert-Jan Vons
2000-04-28 19:03     ` rc not session leader? Sam Roberts
2000-04-27 17:39 building rc on QNX4 Carlo Strozzi
2000-05-02 14:41 ` Tim Goodwin
2000-05-04 15:18 Carlo Strozzi
2000-05-08  8:29 ` Tim Goodwin
     [not found]   ` <tjg@star.le.ac.uk>
2000-05-08 11:50     ` David Luyer
2002-04-04 10:04     ` rc 1.6 $version Tim Goodwin
2002-04-04 21:42       ` Scott Schwartz
2000-05-08 13:28   ` building rc on QNX4 Carlo Strozzi
     [not found] <tell@cs.unc.edu>
2000-05-08 23:25 ` Stephen Tell
2000-05-10  0:37   ` builtins Scott Schwartz
2000-05-12  7:22     ` builtins Carlo Strozzi
2001-10-15 13:56 Beta release rc-1.6b3 available Tim Goodwin
2001-10-17 14:13 ` Buggs
2001-10-17 14:34   ` Tim Goodwin
2001-10-17 21:13     ` Buggs
2001-10-23  7:55 ` Carlo Strozzi
2001-10-23 12:44   ` Tim Goodwin
2001-10-23 15:47   ` Markus Friedl
2001-10-23 21:09     ` Carlo Strozzi
     [not found] <sroberts@certicom.com>
2001-10-23 15:55 ` Sam Roberts
2001-10-23 21:14   ` Scott Schwartz
2001-10-23 21:32 Carlo Strozzi
2001-10-24  3:34 ` Chris Siebenmann
2001-10-24  8:04   ` Carlo Strozzi
2002-03-14 22:37 rc 1.6 $version erik quanstrom
2002-03-27 13:27 ` Tim Goodwin
2002-03-27 21:12   ` Carlo Strozzi
2002-03-30 18:43     ` Paul Haahr
2002-03-31 15:13       ` Carlo Strozzi
2002-04-03 14:31       ` Tim Goodwin
2002-04-03 15:06         ` Paul Haahr

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