linux-kernel - Re: checkpatch: ERROR: Does not appear to be a unified-diff format patch

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Message-ID: <20071013135229.GB4211@stusta.de>
Date:	Sat, 13 Oct 2007 15:52:29 +0200
From:	Adrian Bunk <bunk@...nel.org>
To:	Jan Engelhardt <jengelh@...putergmbh.de>
Cc:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Andy Whitcroft <apw@...dowen.org>,
	Randy Dunlap <rdunlap@...otime.net>,
	Joel Schopp <jschopp@...tin.ibm.com>,
	Linux Kernel Development <linux-kernel@...r.kernel.org>,
	Matthew Wilcox <matthew@....cx>
Subject: Re: checkpatch: ERROR: Does not appear to be a unified-diff format
	patch

On Sat, Oct 13, 2007 at 02:55:01PM +0200, Jan Engelhardt wrote:
> 
> On Oct 13 2007 14:47, Adrian Bunk wrote:
> >On Sat, Oct 13, 2007 at 02:28:00PM +0200, Geert Uytterhoeven wrote:
> >> scripts/checkpatch.pl doesn't seem to like this patch:
> >> 
> >> $ scripts/checkpatch.pl m68k-export-asm-cachectl-h.diff 
> >> ERROR: Does not appear to be a unified-diff format patch
> >>...
> >> --- a/include/asm-m68k/Kbuild
> >> +++ b/include/asm-m68k/Kbuild
> >> @@ -1 +1,2 @@
> >>... ^^
> >
> >Broken patch, this has to be "-1,1".
> 
> No, this is actually how diff outputs it.
>...

You seem to be right.

That's a really strange part of the unidiff format - you have to write
",0" or ",2", but you can omit a ",1".

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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