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Date:	Tue, 23 Oct 2001 07:44:31 -0500
Message-ID: <20011023114431.3825.qmail@happy.star.le.ac.uk>
From:	Tim Goodwin <tjg@star.le.ac.uk>
To:	carlos@scriptaworks.com
CC:	rc@hawkwind.utcs.toronto.edu
In-reply-to: <20011023085557.A16410@texne.com> (carlos@scriptaworks.com)
Subject: Re: Beta release rc-1.6b3 available
References: <20011015125606.2248.qmail@happy.star.le.ac.uk> <20011023085557.A16410@texne.com>

> Mine is not really a bug report, buth rather a request for a new
> feature. I dunno whether it has been asked before on this list, but

Trust me: it has been asked before :-).

> are there any chances that rc will ever handle [tilde expansion ?]

Probably not.  Before it could happen, we would need: 

i) somebody to figure out how tilde expansion can co-exist with rc's
existing interpretation of tilde; OR

ii) somebody to persuade the tilde expanders of an alternate syntax
they are happy with.

Note that if you can twist option ii) far enough, rc *already* has
tilde expansion :-).

    ; fn h {if(~ () $1){echo $home}else perl -le 'print ((getpwnam('^$1^'))[7])'}

    ; echo `h
    /h/tjg

    ; echo `{h games}
    /usr/games

You should be horrified at the use of Perl here, so compile the
program below as `homedir', and use:

    ; fn h {if(~ () $1){echo $home}else homedir $1}

Cheers,

Tim.

#include <stdio.h>
#include <sys/types.h>
#include <pwd.h>

int main(int argc, char **argv) {
	if (argv[1]) {
		struct passwd *p = getpwnam(argv[1]);
		if (p)
			puts(p->pw_dir);
	}
}