linux-kernel - Re: [PATCH] checkpatch.pl: show how to read from stdin

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Date:	Mon, 14 Jan 2008 19:12:43 +0000
From:	Andy Whitcroft <apw@...dowen.org>
To:	Daniel Walker <dwalker@...sta.com>
Cc:	Stefan Richter <stefanr@...6.in-berlin.de>,
	Bernd Petrovitsch <bernd@...mix.at>,
	linux-kernel@...r.kernel.org, Randy Dunlap <rdunlap@...otime.net>,
	Joel Schopp <jschopp@...tin.ibm.com>,
	Jiri Slaby <jirislaby@...il.com>
Subject: Re: [PATCH] checkpatch.pl: show how to read from stdin

On Mon, Jan 14, 2008 at 09:35:15AM -0800, Daniel Walker wrote:
> 
> On Mon, 2008-01-14 at 17:17 +0000, Andy Whitcroft wrote:
> > On Fri, Jan 11, 2008 at 06:06:35PM +0100, Stefan Richter wrote:
> > > Signed-off-by: Stefan Richter <stefanr@...6.in-berlin.de>
> > > Acked-by: Jiri Slaby <jirislaby@...il.com>
> > 
> > As an absolute minimum this seems reasonable to me.  I guess we could
> > make no arguments default to '-' also.  There are up and downsides to
> > doing that, as currently no arguments currently tell you the usage and
> > with this patch would point clearly out the '-' option.  Just assuming
> > stding would lose easy access to usage, which may actually be more
> > confusing for the beginner.  Hmmm.  Cirtainly will include this
> > documentation change if nothing else.
> > 
> 
> The patch that I submitted checks STDIN for piped data, and if there is
> any it will default to checking that incoming data .. That's regardless
> of the number of arguments given .. 

So it does, however that of itself differs from the unix norm; as with
this I cannot run checkpatch and "type" (ie paste) a patch fragment to
check it.  So I don't think we want the semantics as you have there,
as its confusing to the experienced user and inconsistent with the norm.
Either we should document the standard '-' usage as has been suggested
elsewhere or always assume stdin with no parameters.

-apw
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