From mboxrd@z Thu Jan  1 00:00:00 1970
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
In-reply-to: Your message of "Tue, 28 Aug 2012 16:34:10 EDT."
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Date: Tue, 28 Aug 2012 15:46:32 -0700
From: Bakul Shah <bakul@bitblocks.com>
Message-Id: <20120828224632.547BAB827@mail.bitblocks.com>
Subject: Re: [9fans] rc's shortcomings (new subject line)
Topicbox-Message-UUID: b224b476-ead7-11e9-9d60-3106f5b1d025

On Tue, 28 Aug 2012 16:34:10 EDT erik quanstrom <quanstro@quanstro.net>  wrote:
> my knee-jerk reaction to my own question is that making it easier
> and more natural to parallelize dataflow.  a pipeline is just a really
> low-level way to talk about it.  the standard
> 	grep x *.[ch]
> forces all the *.[ch] to be generated before 1 instance of grep runs on
> whatever *.[ch] evaluates to be.

Here the shell would have to understand program behavior.
Consider something like

	8l x.8 y.8 z.8 ...

This can't be parallelized (but a parallelizable loader can be
written).

May be you can define a `par' command (sort of like xargs but
invokes in parallel).

	echo *.[ch] | par -1 grep x

> but it would be okay for almost every use of this if *.[ch] were generated
> in parallel with any number of grep's being run.
>
> i suppose i'm stepping close to sawzall now.

Be careful!