* [9fans] Rc shell FAQ
@ 2003-03-01 23:46 A.S. Kukhar
2003-03-03 19:25 ` andrey mirtchovski
0 siblings, 1 reply; 6+ messages in thread
From: A.S. Kukhar @ 2003-03-01 23:46 UTC (permalink / raw)
To: 9fans
you can get it from http://ask.km.ru/plan9/doc/rcfaq.html,
the document attempts to answer some frequently asked
questions about rc, the Plan 9 shell. FAQ based on ``rc
shell Frequently Asked Questions'' from Alan Watson (15 Dec
1994).
Please forward any comments, corrections, and suggestions
regarding this FAQ to plan9@kp.km.ua.
-kyxap
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [9fans] Rc shell FAQ
2003-03-01 23:46 [9fans] Rc shell FAQ A.S. Kukhar
@ 2003-03-03 19:25 ` andrey mirtchovski
2003-03-04 17:52 ` rob pike, esq.
2003-03-05 3:42 ` A.S. Kukhar
0 siblings, 2 replies; 6+ messages in thread
From: andrey mirtchovski @ 2003-03-03 19:25 UTC (permalink / raw)
To: 9fans
Is this UNIX-only? I tried to find whether it mentioned anything about
regarding specifically the unix implementation of the Rc shell but
couldn't...
In Plan 9 the builtin 'return' does not exist (as it it mentioned in the
rc paper in /sys/doc) so the following examples from the FAQ would not
work:
fn true { return 0 }
fn false { return 1 }
Pretty much every other example there uses 'return' at least once and
wouldn't work on Plan 9... Unless I'm missing somerhing?
andrey
On Sat, 1 Mar 2003, A.S. Kukhar wrote:
> you can get it from http://ask.km.ru/plan9/doc/rcfaq.html,
> the document attempts to answer some frequently asked
> questions about rc, the Plan 9 shell. FAQ based on ``rc
> shell Frequently Asked Questions'' from Alan Watson (15 Dec
> 1994).
>
> Please forward any comments, corrections, and suggestions
> regarding this FAQ to plan9@kp.km.ua.
>
> -kyxap
>
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [9fans] Rc shell FAQ
2003-03-03 19:25 ` andrey mirtchovski
@ 2003-03-04 17:52 ` rob pike, esq.
2003-03-04 18:02 ` andrey mirtchovski
2003-03-05 3:42 ` A.S. Kukhar
1 sibling, 1 reply; 6+ messages in thread
From: rob pike, esq. @ 2003-03-04 17:52 UTC (permalink / raw)
To: 9fans
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I don't think you're missing anything. It's rc that's missing something.
I don't know why, but it doesn't have a return statement and it should.
-rob
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From: andrey mirtchovski <mirtchov@cpsc.ucalgary.ca>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Rc shell FAQ
Date: Mon, 3 Mar 2003 12:25:55 -0700 (MST)
Message-ID: <Pine.LNX.4.44.0303031222250.28942-100000@fbsd.cpsc.ucalgary.ca>
Is this UNIX-only? I tried to find whether it mentioned anything about
regarding specifically the unix implementation of the Rc shell but
couldn't...
In Plan 9 the builtin 'return' does not exist (as it it mentioned in the
rc paper in /sys/doc) so the following examples from the FAQ would not
work:
fn true { return 0 }
fn false { return 1 }
Pretty much every other example there uses 'return' at least once and
wouldn't work on Plan 9... Unless I'm missing somerhing?
andrey
On Sat, 1 Mar 2003, A.S. Kukhar wrote:
> you can get it from http://ask.km.ru/plan9/doc/rcfaq.html,
> the document attempts to answer some frequently asked
> questions about rc, the Plan 9 shell. FAQ based on ``rc
> shell Frequently Asked Questions'' from Alan Watson (15 Dec
> 1994).
>
> Please forward any comments, corrections, and suggestions
> regarding this FAQ to plan9@kp.km.ua.
>
> -kyxap
>
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [9fans] Rc shell FAQ
2003-03-04 17:52 ` rob pike, esq.
@ 2003-03-04 18:02 ` andrey mirtchovski
0 siblings, 0 replies; 6+ messages in thread
From: andrey mirtchovski @ 2003-03-04 18:02 UTC (permalink / raw)
To: 9fans
On Tue, 4 Mar 2003, rob pike, esq. wrote:
> I don't think you're missing anything. It's rc that's missing something.
> I don't know why, but it doesn't have a return statement and it should.
>
> -rob
>
here is what I was referring to (from /sys/doc/rc.ps):
"I deleted the builtins export, readonly, break, continue, read, return, set,
times and unset because they seem redundant or only marginally useful."
andrey
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [9fans] Rc shell FAQ
2003-03-03 19:25 ` andrey mirtchovski
2003-03-04 17:52 ` rob pike, esq.
@ 2003-03-05 3:42 ` A.S. Kukhar
1 sibling, 0 replies; 6+ messages in thread
From: A.S. Kukhar @ 2003-03-05 3:42 UTC (permalink / raw)
To: 9fans
i just tried to rewrite existed faq (about Byron Rakitzis's
rc) to fit only Plan 9 shell, so a few differences between
this shells i missed (including returns). on days i will
fix (or remove) the examples with returns and a few other
bugs that were found by rog.
thank you guys (andrey and rog) for your responses.
p.s. now i don`t have working plan 9 system so checking all
the examples is a problem task
-kyxap
> Is this UNIX-only? I tried to find whether it mentioned
> anything about regarding specifically the unix
> implementation of the Rc shell but couldn't...
>
> In Plan 9 the builtin 'return' does not exist (as it it
> mentioned in the rc paper in /sys/doc) so the following
> examples from the FAQ would not work:
>
> fn true { return 0 }
> fn false { return 1 }
>
> Pretty much every other example there uses 'return' at
> least once and wouldn't work on Plan 9... Unless I'm
> missing somerhing?
>
> andrey
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [9fans] Rc shell FAQ
@ 2003-03-04 18:06 rog
0 siblings, 0 replies; 6+ messages in thread
From: rog @ 2003-03-04 18:06 UTC (permalink / raw)
To: 9fans
> I don't think you're missing anything. It's rc that's missing something.
> I don't know why, but it doesn't have a return statement and it should.
it is at least possible to fake it with:
fn x {
status=blah
}
lack of "break" is sometimes more annoying to work around.
^ permalink raw reply [flat|nested] 6+ messages in thread
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2003-03-01 23:46 [9fans] Rc shell FAQ A.S. Kukhar
2003-03-03 19:25 ` andrey mirtchovski
2003-03-04 17:52 ` rob pike, esq.
2003-03-04 18:02 ` andrey mirtchovski
2003-03-05 3:42 ` A.S. Kukhar
2003-03-04 18:06 rog
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