linux-kernel - Re: [PATCH 0/9] Fix checkpatch errors

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Date:	Sun, 13 Dec 2015 20:31:17 +0000
From:	Ken Moffat <zarniwhoop@...world.com>
To:	Frederik <frederik.voelkel@....de>
Cc:	Nicolai Stange <nicstange@...il.com>,
	Greg KH <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
	jslaby@...e.com, linux-kernel@...cs.fau.de, lukas.braun@....de
Subject: Re: [PATCH 0/9] Fix checkpatch errors

On Sun, Dec 13, 2015 at 07:26:04PM +0100, Frederik wrote:
> On Sun, 13. Dec 19:15, Nicolai Stange wrote:
> > Frederik <frederik.voelkel@....de> writes:
> > 
> > W/o your series applied (so line numbering might be slightly
> > different), checkpatch.pl says:
> > 
> >   ERROR: trailing whitespace
> >   #270: FILE: -:270:
> >   +^I * This do { } while() loop will get ALL chars out of Rx FIFO $
> > 
> > AFAICS, your patch [7/9] ("drivers: tty: 68328serial.c: remove trailing
> > whitespaces") doesn't fix this one.
> > 
> > In good old regexp tradition, the '$' sign denotes the end of line. So,
> > there is a single space after "FIFO" and before the end of line.
> > 
> > If you happen to be Emacs users, consider trying out whitespace-mode.
> > If not, try to find another way to make your editor visualize whitespace
> > somehow.
> 
> Oh right I see. We will fix that and resend.
> 
> Thank you!
If you are using vim, I have the following in my .vimrc.  It was
originally posted here many years ago.  Seems to work on all my x86
boxes, but AFAIR it didn't work on a ppc, so might not work on other
architectures.

"for redundant whitespace, from Jeremy Kerr via Olof Johanson
highlight RedundantWhitespace ctermbg=red guibg=red
match RedundantWhitespace /\s\+$\| \+\ze\t/

HTH

ĸen
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